SMC Networks MSQ Series User manual

Doc. no.MSQB-OM00004-E
PRODUCT NAME
Rotary Table
MODEL / Series / Product Number
MSQ10 to 200()

Contents
Safety Instructions
Outline
Specifications
Mass
Effective torque
Internal construction and parts
Basic circuit
Circuit structure
Recommended models
Mounting
Load restrictions
Flange application
Direction and Angle of Rotation (Adjusting bolt, Internal shock absorber type)
Rotating range examples (Adjusting bolt, Internal shock absorber type)
Rotating direction and rotating angle (External shock absorber type)
Piping
Air supply
Setting of rotation time
Moment of inertia
Calculation formulae for moment of inertia
Kinetic energy
Auto switch type for rotary table
Auto switch specification
Mounting of auto switch
Proper auto switch mounting position at rotation end
Internal structure and operation principle
External stopper
Mounting position of external stopper
Maintenance and Inspection
Regular inspection
Replacement procedure of the seal kit
Troubleshooting
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42

Safety Instructions
These safety instructions are intended to prevent hazardous situations and/or equipment damage.
These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.”
They are all important notes for safety and must be followed in addition to International Standards
(ISO/IEC)*1), and other safety regulations.
*1) ISO 4414: Pneumatic fluid power -- General rules relating to systems.
ISO 4413: Hydraulic fluid power -- General rules relating to systems.
IEC 60204-1: Safety of machinery -- Electrical equipment of machines .(Part 1: General requirements)
ISO 10218-1992: Manipulating industrial robots -Safety.
etc.
Caution
Caution indicates a hazard with a low level of risk which, if not avoided, could result
in minor or moderate injury.
Warning
Warning indicates a hazard with a medium level of risk which, if not avoided, could
result in death or serious injury.
Danger Danger indicates a hazard with a high level of risk which, if not avoided, will result
in death or serious injury.
Warning
1. The compatibility of the product is the responsibility of the person who designs the equipment or
decides its specifications.
Since the product specified here is used under various operating conditions, its compatibility with specific
equipment must be decided by the person who designs the equipment or decides its specifications based on
necessary analysis and test results.
The expected performance and safety assurance of the equipment will be the responsibility of the person who
has determined its compatibility with the product.
This person should also continuously review all specifications of the product referring to its latest catalog
information, with a view to giving due consideration to any possibility of equipment failure when configuring the
equipment.
2. Only personnel with appropriate training should operate machinery and equipment.
The product specified here may become unsafe if handled incorrectly.
The assembly, operation and maintenance of machines or equipment including our products must be
performed by an operator who is appropriately trained and experienced.
3. Do not service or attempt to remove product and machinery/equipment until safety is confirmed.
1.The inspection and maintenance of machinery/equipment should only be performed after measures to
prevent falling or runaway of the driven objects have been confirmed.
2.When the product is to be removed, confirm that the safety measures as mentioned above are implemented
and the power from any appropriate source is cut, and read and understand the specific product precautions
of all relevant products carefully.
3. Before machinery/equipment is restarted, take measures to prevent unexpected operation and malfunction.
4. Contact SMC beforehand and take special consideration of safety measures if the product is to
be used in any of the following conditions.
1. Conditions and environments outside of the given specifications, or use outdoors or in a place exposed to
direct sunlight.
2. Installation on equipment in conjunction with atomic energy, railways, air navigation, space, shipping,
vehicles, military, medical treatment, combustion and recreation, or equipment in contact with food and
beverages, emergency stop circuits, clutch and brake circuits in press applications, safety equipment or
other applications unsuitable for the standard specifications described in the product catalog.
3. An application which could have negative effects on people, property, or animals requiring special safety
analysis.
4.Use in an interlock circuit, which requires the provision of double interlock for possible failure by using a
mechanical protective function, and periodical checks to confirm proper operation.
- 2 -

Safety Instructions
Caution
1.The product is provided for use in manufacturing industries.
The product herein described is basically provided for peaceful use in manufacturing industries.
If considering using the product in other industries, consult SMC beforehand and exchange specifications
or a contract if necessary.
If anything is unclear, contact your nearest sales branch.
Limited warranty and Disclaimer/Compliance Requirements
The product used is subject to the following “Limited warranty and Disclaimer” and “Compliance
Requirements”.
Read and accept them before using the product.
Limited warranty and Disclaimer
1.The warranty period of the product is 1 year in service or 1.5 years after the product is delivered,
whichever is first.
Also, the product may have specified durability, running distance or replacement parts. Please
consult your nearest sales branch.
2. For any failure or damage reported within the warranty period which is clearly our responsibility,
a replacement product or necessary parts will be provided.
This limited warranty applies only to our product independently, and not to any other damage
incurred due to the failure of the product.
3. Prior to using SMC products, please read and understand the warranty terms and disclaimers
noted in the specified catalog for the particular products.
Compliance Requirements
1. The use of SMC products with production equipment for the manufacture of weapons of mass
destruction (WMD) or any other weapon is strictly prohibited.
2. The exports of SMC products or technology from one country to another are governed by the
relevant security laws and regulations of the countries involved in the transaction. Prior to the
shipment of a SMC product to another country, assure that all local rules governing that export
are known and followed.
- 3 -

Design / Selection
① Confirm the specifications.
Products represented in this catalog are designed only for use in compressed air systems.
Do not operate at pressures or temperatures, etc., beyond the range of specifications, as this can
cause damage or malfunction. (Refer to the specifications.)
Please contact SMC when using a fluid other than compressed air.
We do not guarantee against any damage if the product is used outside of the specification range.
② If the operation involves load fluctuations, ascending/descending movements, or changes in
friction resistance, make sure to provide safety measures.
Failure to provide such measures could accelerate the movement, which may be hazardous to
humans, machinery, and other equipment.
③ If there is a chance that the product will pose a hazard to humans, install a protective cover.
If the moving portion of the product will pose a hazard to humans or will damage machinery or
equipment, provide a construction that prevents direct contact with those areas.
④ Make sure that the secured portions will not loosen.
Be sure to adopt a reliable connecting method if the rotary table is used very frequently or if it is used in
a location that is exposed to a large amount of vibrations.
⑤ There may be cases in which a speed reduction circuit or a shock absorber is required.
If the driven object moves at high speeds or is heavy, it will be unfeasible for only the rotary table’s
cushion to absorb the shock. Therefore, provide a speed-reduction circuit to reduce the rotary table’s
speed before the thrust is applied to the cushion, or an external shock absorber to dampen the shock.
If these countermeasures are taken, make sure to take the rigidity of the mechanical equipment into
consideration.
⑥ Consider the possibility of a reduction in the circuit air pressure caused by a power failure.
When an actuator is used as clamping mechanism, there is a danger of workpiece dropping if there is a
decrease in clamping force, due to a drop in circuit pressure caused by a power failure. Therefore,
safety equipment should be installed to prevent damage to machinery and bodily injury.
⑦ Consider the possibility of power source related malfunctions that could occur.
For equipment that relies on power sources such as compressed air, electricity, or hydraulic pressure,
adopt countermeasures to prevent the equipment from causing a hazard to humans or damage to the
equipment in the event of malfunction.
⑧ If a speed controller is provided in the exhaust restrictor, implement a safety design taking the
residual pressure into consideration.
If air pressure is applied to the air supply side without residual pressure in the exhaust side, the rotary
table will operate at abnormally high speeds, which could pose a hazard to humans and damage the
machinery and equipment.
⑨ Consider the behavior of the rotary actuator in the event of an emergency stop.
Devise a safe system so that if a person engages the emergency stop, or if a safety device is tripped
during a system malfunction such as a power failure, the movement of the rotary table will not cause a
hazard to humans or damage the equipment.
⑩ Consider the action of the rotary actuator when restarting after an emergency stop.
Devise a safe design so that the restarting of the rotary table will not pose a hazard to humans or
damage the equipment. Install manually controlled equipment for safety when the actuator has to
be reset to the starting position.
⑪ Do not use the product as a shock absorber.
If an abnormal pressure or air leakage occurs, the rotary table’s speed reduction capability could
become severely affected, which could pose a hazard to humans and damage the machinery and
equipment.
- 4 -
Warning

⑫ Select a speed within the product’s allowable energy value.
If the kinetic energy of the load exceeds the allowable value, it could damage the product, and cause a
hazard to humans and damage the machinery and equipment.
⑬ Provide a shock absorber if the kinetic energy that is applied to the product exceeds the
allowable value.
If the product’s kinetic energy exceeds the allowable value, it could damage the product, and cause a
hazard to humans and damage the machinery or equipment.
⑭ Do not stop or hold the product at midpoint by keeping air pressure in the product.
For a product without an external stopping mechanism, if a directional control valve is closed to keep
the air pressure in the product, in an attempt to stop the product at midpoint, it might not be possible to
maintain that stopped position due to an air leakage. As a result, it could pose a hazard to humans and
cause damage to machinery and/or equipment.
⑮ Do not use two or more rotary tables with the aim of synchronized movement.
One of the actuators may bear the load of operation, making synchronized movement impossible, and
possibly leading to deformation of the equipment.
⑯ Do not use in a location where external leakage of lubricant could have an adverse effect.
The lubricant coating the interior of the product may leak to the outside of the product from connecting
parts of the rotary body, cover, etc.
⑰ Do not disassemble the product or make any modifications, including additional machining.
This may cause human injury and/or an accident.
⑱ Refer to the Auto Switches Precautions when using with an auto switch.
① Do not use below the adjustment range specified for the product.
If the product is used below the specified speed adjustment range, it could cause the product to stick,
slip, or the movement to stop.
② Do not apply external torque to the product that exceeds the rated output.
If an external force that exceeds the product’s rated output is applied to the product, it could damage
the product.
③ The holding torque of the rotating end of the double piston type
With a double piston product, if the internal piston is stopped by coming into contact with the angle
adjustment screw or the cover, the holding torque at the rotating end is one half of the actual output.
④ If it is necessary to provide repeatability of the rotation angle, directly stop the load externally.
Even with a product that is equipped with an angle adjuster, there are times when the initial rotation
angle could change.
⑤ Do not use the product under hydraulic pressure.
The product will be damaged if it is used by applying hydraulic pressure.
⑥ There is a possibility of backlash being generated when the double piston type is stopped in the
middle with a closed center type valve.
⑦ Do not use in a location where there are many temperature fluctuations.
When using in lower temperature applications, take care not to allow frost inside the cylinder.
Operation may be unstable.
⑧ Perform speed adjustment in the environment in which the product is to be used.
Speed adjustments may be necessary if the environmental conditions vary.
- 5 -
Caution

Mounting
① Operation manual
Install the product and operate it only after reading the operation manual carefully and understanding its
contents. Also, keep the manual in a location where it can be referred to as necessary.
② Ensure sufficient space for maintenance activities.
When installing the products, allow access for maintenance.
③ Tighten threads with the proper tightening torque.
When installing the products, follow the listed torque specifications.
④ Before adjusting the angle by supplying air pressure, take appropriate measures to prevent the
equipment from rotating unnecessarily.
When an adjustment is performed under air pressure, the equipment could rotate and fall during the
adjustment, depending on the mounted posture of the equipment. As a result, it could pose a hazard to
humans and damage the machinery and equipment.
⑤ Do not loosen the angle adjustment screw beyond the allowable adjustment range.
The angle adjustment screw could fall out if it is loosened beyond its allowable adjustment range, which
could pose a hazard to humans and damage the machinery and equipment.
⑥ Do not place a magnetic object near the product.
The auto switch is a magnetic sensing type. If a magnetic object is placed close to it, the rotary actuator
could operate suddenly, which could pose a hazard to humans and damage the machinery and
equipment.
⑦ Do not perform additional machining to the product.
Additional machining to the product can result in insufficient strength and cause damage to the product.
This can lead to possible human injury and damage to the surrounding equipment.
⑧ Do not enlarge the fixed throttle by modifying the pipe connectors.
If the hole diameter is enlarged, the product’s rotation speed will increase, causing the shock force to
increase and damage to the product. As a result, it could pose a hazard to humans and damage the
machinery and equipment.
⑨ If shaft couplings are to be used, use those with angular freedom.
If shaft couplings that lack angular freedom are used, they could scrape due to eccentricity, leading to
equipment malfunction and product damage. As a result, it could pose a hazard to humans and damage
the machinery and equipment.
⑩ Do not apply a load that exceeds the values given in the catalog.
If a load that exceeds the allowable values is applied to the product, it could lead to equipment
malfunction, a hazard to humans, and damage to the machinery and equipment.
⑪ Place an external stopper in a position away from the rotating shaft.
If the stopper is placed near the rotating shaft, the torque that is generated by the product itself will
cause the reaction force which is directed to the stopper to be redirected and applied to the rotating shaft.
This will lead to the breakage of the rotating shaft and bearing. As a result, it could pose a hazard to
humans and damage the machinery and equipment.
- 6 -
Warning

Precautions when Using External Stoppers
・ Be sure to install external stoppers in the proper places. Installation in the wrong place can result in
equipment breakage, which could damage other equipment or cause human injury.
・ Install external stoppers within the range of the rotating angle.
Installing an external stopper at the maximum rotation angle may result in an inability to fully absorb the
kinetic energy generated, and damage to equipment may occur.
Precautions when Converting Rotational Motion to Linear Motion
When using a link mechanism, etc., to convert rotational motion to linear motion, and determining the
operation end using the stopper on the linear motion end (see below), a small value for θ at the operation
end may result in the torque of the rotary table causing excessive radial load to act on the output axle, and
equipment breakage may occur.
Install a stopper on the rotation motion side, or increase the value of θ at the operation end, to make sure
the load generated does not exceed the allowable value for the product.
⑫ Do not use springs, etc., to add force in the rotational movement direction.
When rotational force from an external spring, etc., acts and generates negative pressure on the
product’s interior, breakage of the internal seal or acceleration of abrasion may occur.
- 7 -
Install the stopper at a sufficient
distance from the rotating shaft.
The external stopper becomes a
fulcrum, resulting in the load’s
inertia force being applied to the
table as a being moment.
If an external stopper is installed
on the opposite side of the load,
the inertia force generated by
the load is applied directly to the
table.
Stopper
Rotary table

① Do not use organic solvent to wipe the area of the name plate that shows the model.
It will erase what is indicated on the name plate.
② Do not hit the rotating table by securing the body or hit the body by securing the rotating table.
These actions could cause the table to bend or damage the bearing. When a load must be coupled to
the rotating table, secure the rotating table.
③ Do not step directly onto the table or on the equipment that is coupled to the table.
Standing directly on the rotating table could cause the rotating table or the bearing to become damaged.
④ If a product is equipped with an angle adjustment function, use it within the specified adjustment
range.
If the product is used outside the specified adjustment range, it could lead to equipment malfunction or
product damage. Refer to the product specifications for details on the adjustment range of the products.
Piping
① Refer to the Fittings and Tubing Precautions (Best Pneumatics No.6) for handling one touch
fittings.
② Preparation before piping
Before piping is connected, it should be thoroughly blown out with air (flushing) or washed to remove
chips, cutting oil and other debris from inside the pipe.
③ Wrapping of pipe tape
When screwing piping or fittings into ports, ensure that chips from the pipe threads or sealing material
do not enter the piping. Also, if pipe tape is used, leave 1.5 to 2 thread ridges exposed at the end of the
threads.
Speed and Cushion Adjustment
① To make a speed adjustment, gradually adjust starting from the low speed end.
If the speed adjustment is performed from the high speed end, it could damage the product.
As a result, it could pose a hazard to humans and damage the machinery and equipment.
② For products with shock absorbers, when the shock absorber stops moving before reaching
the stroke end by using a stopper mechanism with the objective of shortening tact time, be sure
the shock absorber is stopped in a position where it has adequately absorbed the kinetic
energy.
Failure to do so can result in damage to equipment.
- 8 -
Caution
Caution
Warning
Pipe tape
Leave approx. 2 threads exposed
Winding direction

Lubrication
① This product should be used without lubrication. Although it will operate even if it is lubricated, it
could lead to sticking or slipping.
Air Supply
① Type of fluids
Please consult with SMC when using the product in applications other than compressed air.
② When there is a large amount of moisture
Compressed air containing a large amount of moisture can cause malfunction of pneumatic equipment.
An air dryer or water separator should be installed upstream from filters.
③ Drain flushing
If condensation in the drain bowl is not emptied on a regular basis, the bowl will overflow and allow the
condensation to enter the compressed air lines. This may cause malfunction of pneumatic equipment.
If the drain bowl is difficult to check and remove, installation of a drain bowl with an auto drain option is
recommended.
④ Use clean air.
Do not use compressed air that contains chemicals, synthetic oils including organic solvents, salt or
corrosive gases, etc., as it can cause damage or malfunction.
① When extremely dry air is used as the fluid, degradation of the lubrication properties inside the
equipment may occur, resulting in reduced reliability (or reduced service life) of the equipment.
Please consult with SMC.
② Install an air filter.
Install an air filter upstream near the valve. Select an air filter with a filtration size of 5μm or smaller.
③ Take measures to ensure air quality, such as by installing an aftercooler, air dryer, or water
separator.
Compressed air that contains a large amount of moisture can cause malfunction of pneumatic
equipment such as rotary tables. Therefore, take appropriate measures to ensure air quality, such as by
providing an aftercooler, air dryer, or water separator.
④ Ensure that the fluid and ambient temperature are within the specified range.
If the fluid temperature is 5°C or less, the moisture in the circuit could freeze, causing damage to the
seals and equipment malfunction. Therefore, take appropriate measures to prevent freezing.
- 9 -
Caution
Warning
Warning

Operating Environment
① Do not use in an atmosphere containing corrosive gases, chemicals, sea water, water, steam, or
where there is direct contact with any of these.
Refer to the construction diagram for information on the materials used in the rotary table.
② Do not expose the product to direct sunlight for an extended period of time.
③ Do not use in a place subject to heavy vibration and/or shock.
④ Do not mount the product in locations where it is exposed to radiant heat.
⑤ Do not use in dusty locations or where water oil, etc., splash on the equipment.
Maintenance
① Perform maintenance inspection according to the procedures indicated in the operation
manual.
If handled improperly, malfunction and damage of machinery or equipment may occur.
② Maintenance work
If handled improperly, compressed air can be dangerous. Assembly, handling, repair and element
replacement of pneumatic systems should be performed by a knowledgeable and experienced
person.
③ Drain flushing
Remove drainage moisture from air filters regularly.
④ Removal of equipment, and supply/exhaust of compressed air
When components are removed, first confirm that measures are in place to prevent workpieces from
dropping, run-away equipment, etc. Then, cut off the supply pressure and electric power, and exhaust
all compressed air from the system using the residual pressure release function.
When machinery is restarted, proceed with caution after confirming that appropriate measures are in
place to prevent cylinders from sudden movement.
① For lubrication, use the designated grease for each specific product.
The use of a non-designated lubricant could damage the seals.
- 10 -
Warning
Caution
Warning

Auto Switches Precautions
Design / Selection
① Confirm the specifications.
Read the specifications carefully and use this product appropriately. The product may be damaged
or malfunction if it is used outside the range of specifications of current load, voltage, temperature
or impact.
We do not guarantee against any damage if the product is used outside of the specification range.
② Cautions for use in an interlock circuit
When an auto switch is used for an interlock signal requiring high reliability, devise a double interlock
system to avoid trouble by providing a mechanical protection function, or by also using another switch
(sensor) together with the auto switch.
Also, perform regular maintenance and confirm proper operation.
③ Do not make any modifications (including exchanging the printed circuit boards) to the product.
This may cause human injuries and accidents.
① Pay attention to the length of time when a switch is ON at an intermediate stroke position.
When an auto switch is placed at an intermediate position of the stroke and a load is driven, at the time
the piston passes the auto switch will operate, but if the speed is too great the operating time will be
shortened and the load may not operate properly.
The maximum piston speed is:
V(mm/s)= ×1000
② Keep wiring as short as possible.
<Reed>
As the length of the wiring to a load gets longer, the rush current at switching ON becomes greater,
and this may shorten the product’s life. (The switch will stay ON all the time.)
1) Use a contact protection box when the wire length is 5m or longer.
2) Even if an auto switch has a built-in contact protection circuit, when the wiring is more than 30m
long, it is not able to adequately absorb the rush current and its life may be reduced.
It is again necessary to connect a contact protection box in order to extend its life. Please consult
SMC in this case.
<Solid state>
3) Although wire length should not affect switch function, use a wire 100m or shorter.
Even if the length is less than 100m, longer wiring makes it more likely to be affected by noise.
When the wire length is long, we recommended a ferrite core should be attached to both ends of the
cable to prevent excess noise.
A contact protection box is not necessary for solid state switches due to the nature of the product
construction.
③ Do not use a load that generates surge voltage. If a surge voltage is generated,
discharge may be generated at the contact, possibly reducing the product life.
If driving a load such as a relay that generates a surge voltage.
<Reed>
Use an auto switch with built-in contact protection circuit or use a contact protection box.
<Solid state>
Use a built-in surge absorbing element type device.
- 11 -
Caution
Warning
Auto switch operating range (mm)
Load applied time (ms)

④ Do not use a load that generates surge voltage. If a surge voltage is generated,
discharge may be generated at the contact, possibly reducing the product life.
If driving a load such as a relay that generates a surge voltage.
<Reed>
Use an auto switch with built-in contact protection circuit or use a contact protection box.
<Solid state>
Use a built-in surge absorbing element type device.
⑤ Take precautions when multiple rotary tables are used close together.
When multiple auto switch rotary tables are used in close proximity, magnetic field interference may
cause the auto switches to malfunction. Maintain a minimum separation of 40mm between rotary tables.
The auto switches may malfunction due to the interference from the magnetic fields.
Use of a magnetic screen plate (MU-S025) or commercially available magnetic screening tape can
reduce the interference of magnetic force.
⑥ Pay attention to the internal voltage drop of the auto switch.
<Reed>
1) Auto switch with an indicator light
● If auto switches are connected in series as shown below, note that there will be a large voltage drop
because of internal resistance in the LED. (Refer to the internal voltage drop in the auto switch
specifications.)
[The voltage drop will be “n” times larger when “n” auto switches are connected.]
Even though an auto switch operates normally, the load may not operate.
Load
● In the same way, when operating under a specified voltage, although an auto switch may operate
normally, the load may not operate. Therefore, the formula below should be satisfied after confirming
the minimum operating voltage of the load.
Supply Internal voltage Minimum operating
voltage drop of auto switch voltage of load
2) If the internal resistance of an LED causes a problem, select an auto switch without an indicator light.
<Solid state / 2-wire type>
3) Generally, the internal voltage drop will be greater with a 2-wire solid state auto switch than with a
reed auto switch. Take the same precautions as in 1).
Also, take note that a 12VDC relay is not applicable.
⑦ Pay attention to leakage current.
<Solid state / 2-wire type>
Current (leakage current) flows to the load to operate the internal circuit even when in the OFF state.
Operating current of load (OFF condition) > Leakage current
If the criteria given in the above formula are not met, it will not reset correctly (stays ON).Use a 3-wire
switch if this specification will not be satisfied.
Moreover, leakage current flow to the load will be “n” times larger when “n” auto switches are
connected in parallel.
⑧ Ensure sufficient clearance for maintenance activities.
When designing an application, be certain to allow sufficient clearance for maintenance.
⑨ Use the rotary table and auto switch in proper combination.
The auto switch is pre-adjusted to operate properly for an auto-switch-capable SMC rotary table.
If the auto switch is mounted improperly, used for another brand of rotary table or used after changing
the machine installation, the auto switch may not operate properly.
- 12 -
>

Mounting / Adjustment
① Do not drop or bump.
Do not drop, bump or apply excessive impacts (300m/s2 or more for reed auto switches and
1000m/s2 or more for solid state auto switches) while handling. Although the body of the auto
switch may not be damaged, the inside of the auto switch could be damaged and cause
malfunction.
② Observe the proper tightening torque for mounting an auto switch.
When an auto switch is tightened beyond the range of tightening torque, auto switch mounting
screws, auto switch mounting brackets or auto switch may be damaged.
On the other hand, tightening below the range of tightening torque may allow the auto switch to slip
out of position.
③ Do not carry a rotary table by the auto switch lead wires.
Never carry a rotary table by its lead wires. This may not only cause broken lead wires, but it may
cause internal elements of the auto switch to be damaged by the stress.
④ Fix the auto switch using the appropriate screws on the switch body. If other screws are
used, the auto switch may be damaged.
Wiring
① Confirm proper insulation of wiring.
Be certain that there is no faulty wiring insulation (contact with other circuits, ground fault, improper
insulation between terminals, etc.). Damage may occur due to excess current flow into the auto
switch.
② Do not wire with power lines or high voltage lines.
Wire separately from power lines or high voltage lines, avoiding parallel wiring or wiring in the same
conduit with these lines. Control circuits containing auto switches may malfunction due to noise
from these other lines.
③ Avoid repeatedly bending or stretching lead wires.
Broken lead wires will result from repeatedly applying bending stress or stretching forces to the lead
wires.
Stress and tensile force applied to the connection between the cable and auto switch increases the
possibility of disconnection.
Fix the cable in the middle so that it is not movable in the area where it connects with the auto
switch.
④ Be certain to connect the load before power is applied.
<2-wire type>
If the power is turned ON when an auto switch is not connected to a load, the auto switch will be
instantly damaged because of excess current (Short circuit).
It is the same as when the 2-wire brown lead wire (+, output) is directly connected to the (+) power
supply terminal.
- 13 -
Warning
Warning

⑤ Do not allow short-circuit of loads.
<Reed>
If the power is turned ON with a load in a short circuit condition, the switch will be instantly
damaged because of excess current flow into the switch.
<Solid state>
PNP output type auto switches do not have built-in short circuit prevention circuits.
If a load is short circuited, the auto switch will be instantly damaged as in the case of reed auto
switches.
Take special care to avoid reverse wiring with the brown power supply line and the black output
line on 3-wire type auto switches.
⑥ Avoid incorrect wiring.
<Reed>
A 24 VDC auto switch with indicator light has polarity. The brown lead wire or terminal No.1 is (+),
and the blue lead wire or terminal No.2 is (－).
1) If connections are reversed, the auto switch will operate, however, the LED will not light up.
Also, take note that a current greater than that specified will damage the LED and it will no longer
operate.
Applicable models : D-93, A93V
<Solid state>
1) If connections are reversed on a 2-wire type auto switch, the auto switch will not be damaged if
protected by a protection circuit, but the auto switch will always stay in an ON state. However, it
is still necessary to avoid reversed connections, since the auto switch could be damaged by a
load short circuit in this condition.
2) If connections are reversed (power supply line + and power supply line－) on a 3-wire type auto
switch, the auto switch will be protected by a protection circuit. However, if the power supply line
(+) is connected to the blue wire and the power supply line (－) is connected to the black wire,
the auto switch will be damaged.
⑦ When the cable sheath is stripped, confirm the stripping direction. The insulator may be
split or damaged depending on the direction. (D-M9□ only)
- 14 -
Recommended Tool
Description Model
Wire stripper D-M9N-SWY
* Stripper for a round cable (Ø2.0) can
be used for a 2-wire type cable.

Operation Environment
① Never use in an atmosphere with explosive gases.
Auto switches are not designed with explosion-proof construction. Never use in an atmosphere
containing explosive gas since this may cause a serious explosion.
Please contact SMC concerting ATEX compliant products.
① Do not use in an area where a magnetic field is generated.
Auto switches will malfunction or magnets inside rotary tables will become demagnetized. (Please
consult with SMC if a magnetic field resistant auto switch can be used.)
② Do not use in an environment where the auto switch will be continually exposed to water.
Although auto switches satisfy IEC standard IP67 construction (JIS C 0920: watertight construction),
do not use auto switches in applications where continually exposed to water splash or spray. Poor
insulation or swelling of the potting resin inside auto switches may cause malfunction.
③ Do not use in an environment with oil or chemicals.
Please consult with SMC if auto switches will be used in an environment with coolant, cleaning
solvent, various oils or chemicals. If auto switches are used under these conditions for even a short
time, they may be adversely affected by improper insulation, malfunction due to swelling of the
potting resin, or hardening of the lead wires.
④ Do not use in an environment with temperature cycles.
Please consult with SMC if switches are used where there are temperature cycles other than
normal temperature changes, as there may be adverse affects inside the auto switches.
⑤ Do not use in an environment where there is excessive impact shock.
<Reed>
When excessive impact (300m/s2 or more) is applied to a reed auto switch during operation, the
contacts may malfunction and generate or cut off a signal momentarily (1ms or less). Please
consult with SMC if a solid state auto switch can be used according to the environment.
⑥ Do not use in an area where surges are generated.
<Solid state>
When there are units (solenoid lifter, high frequency induction furnace, motor, radio equipment etc.)
which generate a large amount of surge in the area around the rotary table with solid state auto
switches, this may cause deterioration or damage to the auto switch’s internal circuit elements.
Avoid sources of surge generation and crossed lines.
⑦ Avoid accumulation of iron debris or close contact with magnetic substances.
When a large amount of iron debris such as machining chips or spatter is accumulated, or a
magnetic substance (something attracted by a magnet) is brought into close proximity with a rotary
table with auto switches, or a rotary actuator, it may cause the auto switch to malfunction due to a
loss of the magnetic force inside the rotary table.
⑧ Please contact SMC concerning water resistance, elasticity of lead wires, usage at welding
sites, etc.
⑨ Do not use in direct sunlight.
⑩ Do not mount the product in locations where it is exposed to radiant heat.
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Warning
Caution

Maintenance
① Removal of equipment, and supply/exhaust of compressed air.
Before any machinery or equipment is removed, first ensure that the appropriate measures are in place
to prevent the fall or erratic movement of driven objects and equipment, then cut off the electric power
and reduce the pressure in the system to zero. Only then should you proceed with the removal of any
machinery and equipment.
When machinery is restarted, proceed with caution after confirming that appropriate measures are in
place to prevent actuators from moving suddenly.
① Perform the following maintenance periodically in order to prevent possible danger due to
unexpected auto switch malfunction.
1) Secure and tighten auto switch mounting screws.
If screws become loose or the mounting, position is dislocated, retighten them after readjusting the
mounting position.
2) Confirm that there is no damage to lead wires.
To prevent faulty insulation, replace auto switches or repair lead wires, etc., if damage is discovered.
3) Confirm the lighting of the green light on the 2-color indicator type auto switch.
Confirm that the green LED is on when stopped at the established position. If the red LED is on, the
mounting position is not appropriate. Readjust the mounting position until the green LED lights up.
- 16 -
Warning
Caution

Outline
This operation manual explains “Rack and Pinion Type Rotary Cylinder”.
When using the product, load (moment of inertia), rotation time and other factors have to be considered.
So, confirm the specification of the product prior to use.
Specifications
Table 1. Specifications
Size 10 20 30 50 70 100 200
Fluid Air (non-lube)
Maximum
Operating
Pressure
With adjustment bolt 1MPa
With internal
shock absorber 0.6MPa
With external
shock absorber 1MPa －
Minimum
Operating
Pressure
With adjustment bolt
0.1MPa Note1)
With internal
shock absorber
With external
shock absorber 0.2MPa －
Ambient and fluid temperature 0 to 60°C (no freezing)
Cushion
Rubber bumper
Shock absorber
External shock absorber －
Allowable
Kinetic
Energy (J)
With adjustment bolt 0.007[J] 0.025[J] 0.048[J] 0.081[J] 0.240[J] 0.320[J] 0.560[J]
With internal
shock absorber 0.039[J]
0.116[J] 0.116[J] 0.294[J] 1.100[J] 1.600[J] 2.900[J]
With external
shock absorber
(For low energy)
0.161[J] 0.574[J] 0.805[J] 1.310[J]
－
With external
shock absorber
(For high energy)
0.231[J] 1.060[J] 1.210[J] 1.820[J]
Angle
adjustment
Range
With adjustment bolt
0 to 190 Note2)
With internal
shock absorber
With external
shock absorber Each rotation end ±3° Note3)
Maximum
Rotation
With adjustment bolt
190°
With internal
shock absorber
With external
shock absorber 96°, 186° －
Rotation
Time
Adjustmen
t
Range
With adjustment bolt 0.2 to 1.0s/90° 0.2 to
1.5s/90°
0.2 to
2.0s/90°
0.2 to
2.5s/90°
With internal
shock absorber 0.2 to 0.7s/90° 0.2 to 1.0s/90°
With external
shock absorber 0.2 to 1.0s/90° Note4) －
Cylinder bore size Ø15 Ø18 Ø21 Ø25 Ø28 Ø32 Ø40
Port size M5x0.8 Rc1/8 (G1/8, NPT1/8), M5x0.8
Note1) Minimum operating pressure of MSQA10 (High precision type: size 10) is 0.2MPa.
Note2) Be careful if the rotation angle of a type with internal shock absorber is set below the value in the table
below. The piston stroke will be smaller than the shock absorber’s effective stroke, resulting in
decreased energy absorption ability.
Note 3) For external absorber type there are two rotating angles, 90° specification and 180° specification.
Note 4) The values in the table indicate the time from the start of rotation until the shock absorber acts, reducing
the speed. After deceleration, the time required to reach the rotating end is about 0.2 to 2s. However, it
varies according to the operating conditions (moment of inertia for load, rotating speed, operating
pressure).
The shock absorber acts in the range between the rotating end and the angles shown table 3.

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Table 2. Minimum rotation angle that will not allow decrease of energy absorption ability
(Internal shock absorber type)
Size 10 20 30 50 70 100 200
Minimum rotation angle that will
not allow decrease of energy
absorption ability
52° 43° 40° 60° 71° 62° 82°
Table 3. Rotating angle at which the shock absorber acts (External shock absorber type)
Size 10 20 30 50 70 100 200
For low energy 7.1° 6.9° 6.2° 9.6° －
For high energy 8.6° 8.0° 7.3° 10.5°
Mass
Table 4. Mass [g]
Size 10 20 30 50 70 100 200
Basic
Type
With adjustment bolt 500 940 1230 1990 2880 4090 7580
With internal shock absorber 510 940 1230 2010 2890 4100 7650
With
external
shock
absorber
90° specification 600 1150 1460 2390
－
180° specification 570 1090 1390 2280
[g]
Size 10 20 30 50
High
precision
type
With adjustment bolt 530 1040 1350 2150
With internal shock absorber 540 1040 1350 2170
With
external
Shock
absorber
90° specification 670 1340 1690 2720
180° specification 640 1290 1620 2600
Note) Values above do not include auto switch mass.
Effective torque
- 18 -
Effective output
Effective output
Operating Pressure (MPa) Operating Pressure (MPa)
Effective torque (N
・
m)
Effective torque (N
・
m)
Graph 1

Internal construction and parts
MSQ10～50 (Adjustment bolt type, Internal shock absorber type)
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28 Product label 1
27 Plug 2
26
Seal washer
2
25
Parallel pin
1
24
Hexagon socket head cap screw
8
23
Hexagon socket head cap screw
6
22
Hexagon thin socket head bolt
(Size10 Cross recessed round head screw) 4
21
Round head no.0 Philips screw
1
20
B
earing
1
High precision
type:2 (angular duplex bearing)
19
B
earing
1
18
Piston seal
4
17
Wear ring
4
16
Magnet
2
15
Bearing retainer
1
14
Table
1
13
Gasket
（
End cover
）
1
12
Gasket
（
Cover
）
1
11
Push nut
2
10
Cushion pad
2
Not required for models with shock absorber.
9
Adjustment bolt(or shock absorber)
2
8
Compact h
exagon nut
2
7
Pinion
1
6
Piston
2
5
End cover
1
4
Seal
1
3
Plate
1
2
Cover
1
1
Body
1
No
Description
Qty
Note