SMC Networks CM2Y-Z Series User manual

Doc. no.CM2Y-OM0001H-A
PRODUCT NAME
ＳＭＯＯＴＨ ＣＹＬＩＮＤＥＲ
MODEL / Series / Product Number
CM2Y-Z、CG1Y-Z、CQ2Y-Z
CQSY、CA2Y-Z SERIES

Contents
Safety Instructions 2~5
1. Specifications 6
2. Installation and Handling 6~9
3. Maintenance 10~14
4. Basic Circuit for Cylinder Operation 15
5. Troubleshooting 16~17
6. Construction and Material 18~23
-1-

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: 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
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.2)
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.
2) Vacuum pads are excluded from this 1 year warranty.
A vacuum pad is a consumable part, so it is warranted for a year after it is delivered.
Also, even within the warranty period, the wear of a product due to the use of the vacuum
pad or failure due to the deterioration of rubber material are not covered by the limited
warranty.
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 regulation 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.
Caution
SMC products are not intended for use as instruments for legal metrology.
Measurement instruments that SMC manufactures or sells have not been qualified by type approval tests
relevant to the metrology (measurement) laws of each country.
Therefore, SMC products cannot be used for business or certification ordained by the metrology
(measurement) laws of each country.
－ 3 －

Smooth Cylinder
Safety Product Precautions 1
Be sure to read this before handling the products.
－ 4 －

Smooth Cylinder
Safety Product Precautions 2
Be sure to read this before handling the products.
－ 5 －

－ 6 －
1. Product specifications
1-1. Specifications
Fluid Air
Proof pressure 1.05MPa
Maximum operating pressure 0.7MPa
Minimum operating pressure
12, 16 0.03MPa
20 ~ 40 0.02MPa
50 ~ 100 0.01MPa
Ambient and fluid
temperature
-10 ~ +70 C,
Built-in magnet type: -10 ~ +60 C (with no
freezing)
Lubricant Non-lube (Do not lubricate)
Stroke length tolerance (mm)
CM2Y、CG1Y、CA2Y +1.4
0
CQSY、CQ2Y +1.0
0
Cushion Rubber bumper (none for CA2Y)
Allowable leakage rate 0.5L/min(ANR) or less
Direction of low-friction Bi-directional
Operating piston speed 5 ~ 500 mm/sec
！
W a r n i n g
 Check the specifications
These products are designed according to use in industrial compressed air systems. If the products are used in
conditions where pressure, temperature, etc. are out of specifications, damage and/or malfunction may be
caused. Do not use under these conditions. (Please refer to the specifications)
Consult SMC if you use a fluid other than compressed air.
 A deceleration circuit or shock absorber, etc. may be required.
When a driven object is operated at high speed or the load is heavy, a cylinder’s cushion will not be sufficient to
absorb the shock. Install a deceleration circuit to reduce the speed before cushioning or install an external
shock absorber to relieve the shock. In this case, the rigidity of the machinery should also be examined.
2. Installation/operating method
2-1． Fluid
Compressed air to be supplied to the cylinder shall be filtered by air filter such as our Series AF
and use the regulated air at specified pressure by regulator such as our Series AR.
！
W a r n i n g
 Use clean air
If compressed air includes chemicals, synthetic oils containing organic solvents, salt or corrosive
gases, etc., it can cause damage or malfunction.

－ 7 －
！
C a u t i o n
 Install air filter
Install air filters at the upstream side of valves. The filtration degree should be 5 m or less.
 Install an after cooler, air dryer, drain catch, etc.
Air that includes excessive condensate may cause malfunction of valves and other pneumatic equipment. To
prevent this, install an air dryer, after cooler, etc.
 Use the product within the specified range of fluid and ambient temperature.
Take measures to prevent freezing, since moisture in circuits will be frozen under 5C, and this may cause
damage to seals and lead to malfunction.
 Lubrication to the low-friction type cylinder.
Please do not lubricate this cylinder. If it is lubricated, grease will be washed away and will cause the increase
of sliding resistance.
2-2． Design
The compatibility of pneumatic equipment is the responsibility of the person who designs the
pneumatic system or decides its specifications.
！
W a r n i n g
 There is a possibility of dangerous sudden action by air cylinder if sliding parts of
machinery are twisted due to external forces, etc.
In such cases, human injury; e.g. hands or feet would be caught in the machinery or damage to the machinery
itself may occur. Therefore, the machinery should be designed to avoid such dangers.
 A protective cover is recommended to minimize the risk of personal injury.
If a driven object and moving parts of a cylinder have possibility of danger to human body, design the structure to
avoid having contact with the human body.
 Securely tighten all stationary parts and connected parts so that they will not become
loose.
Adopt a secure tightening method if the cylinder is used in an environment where the operating frequency is high
and receives a lot of vibration.
 Design the machinery that external force which exceeds the maximum output shall not be
applied to the cylinder.
Cylinder breakage may present a danger to human body or machinery.
 Consider aptitude of the mounting table’s rigidity, as the cylinder brings great power.
It may present a danger to human body or machinery.
 Consider a possible drop in operating pressure due to a power outage, etc.
When a cylinder is used in a clamping mechanism, there is a danger of work dropping if there is a drop of
pressure in circuit caused by a power outage, etc. Therefore, safety equipment should be installed to prevent
damage to machinery and human injury. Suspension mechanisms and lifting devices also require consideration
for drop prevention.
 Consider a possible loss of power source.
Measures should be taken to protect against human injury and equipment damage in the event that there is a
loss of power to equipment controlled by air pressure, electricity or hydraulics, etc.
 Consider emergency stops.
Design so that human injury and/or damage to machinery and equipment will not be caused when machinery is
stopped by a power outage, a manual emergency stop or a safety device under abnormal conditions.
 Consider the action when operation is restarted after an emergency stop or abnormal
stop.
Design the machine so that human injury or equipment damage will not occur upon restart of operation. When
the cylinder has to be reset at the starting position, install manual safety equipment.
 Intermediate stops.
When intermediate stop of a cylinder is performed with a 3 position closed center directional control valve, it is
difficult to achieve stopping positions as accurate and minute as with hydraulic pressure, due to the
compressibility of air. Furthermore, since valves and cylinders, etc. are not guaranteed for zero air leakage, it
may not be possible to hold a stopped position for an extended period of time. Contact SMC in case it is
necessary to hold a stopped position for an extended period.

－ 8 －
！
C a u t i o n
 Operate the piston within a range such that collision damage will not occur at the end of
the stroke.
Operate within a range such that damage will not occur when the piston having inertial force stops by striking the
cover at the stroke end. Refer to the cylinder selection procedures for the range within which damage will not
occur.
 If a clearance between clevis or trunnion and companion bearing is wide, bending load
will be applied to the pin. Thus, do not make this clearance that wide.
 Do not let chips or extraneous materials enter inside the cylinder from the inlet.
2-3． Mounting / installation
！
C a u t i o n
 Minimum lateral load shall be applied to the bearing of the piston rod.
If excessive lateral load is given to the bearing part, sliding resistance will increase. Mount so that it shall be the
minimum amount.
 Make sure to connect the rod and the load so that their axial center and movement
directions match.
If they do not match, stress could be applied to the rod and the tube, causing the inner surface of the tube, the
bushing, the rod surface, and the seals to wear and to become damaged.
 When an external guide is used, connect the external slider and the load in such a way
that there is no interference at any point within the stroke.
 Do not scratch or gouge the sliding part of the cylinder tube or the piston rod by striking it
with an object or squeezing it.
The tube bore is manufactured under precise tolerances. Thus, even a slight deformation could lead to a
malfunction. Furthermore, any scratches or gouges on the sliding part of the piston rod could damage the seals,
which could cause air leakage
 Prevent the rotating parts from seizing.
Apply grease to the rotating parts (such as the pin) to prevent them from seizing.
 Do not use until you verify that the equipment can operate properly.
After mounting, repair or modification, etc., connect the air supply and electric power, and then confirm proper
mounting by means of appropriate function and leak inspections.
 Do not let chips or extraneous material enter inside the cylinder from the inlet.
When installing cylinder on the work site, chips came out of drilling holes can enter the cylinder from the inlet.
Pay attention that those should not enter the cylinder.
2-4． Operating conditions environment
！
W a r n i n g
 Do not use in environments where there is a danger of corrosion.
Refer to the construction drawing regarding cylinder materials.
 Do not use in an area that is dusty or where water or oil splashes on the cylinder.
It would affect grease of the piston rod or inside the cylinder. Also, it will increase sliding resistance.
 Humid place is not suitable for storing cylinder.
Store cylinders in not humid place in order to prevent from rusting, and also piston rods shall be pulled in.

－ 9 －
！
C a u t i o n
 Preparation before piping
Before piping is connected, it should be thoroughly blown out with air (flushing) or washed to remove cutting
chips, cutting oil and other debris from inside the pipe.
 Wrapping of sealant tape
When connecting pipes and fittings, etc., be sure that cutting chips from the pipe threads and sealing material do
not get inside the piping.
Also, when sealant tape is used, leave 1.5 to 2 thread ridges exposed at the end of the pipe/fitting.
2-5. Speed control
When the cylinder speed is adjusted, please install a speed controller such as our Series AS
at the air supply port and adjust as specified speed. Speed controller is available in two
types: meter-in type which adjusts speed by throttling air supplied to cylinder and meter-out
type which regulates air exhausted from cylinder.
！
C a u t i o n
 Use a speed controller to adjust the cylinder drive speed, gradually increasing from a low
speed to the desired speed setting.
2-6. Directional control
If the direction of cylinder operation is changed, use conforming solenoid valve from our various
solenoid valves.
！
W a r n i n g
 Design a circuit that prevents lurching of a driven object (piston).
If the cylinder is operated by exhaust center type directional control valve or when restarting after exhausting
residual pressure in the circuit, etc., the driven object (piston) will lurch at a high speed if pressure is supplied to
one side of the cylinder with air in the cylinder is exhausted. In such cases, human injury; e.g. hands or feet
would be caught in the machinery or damage to the machinery itself may occur. Therefore, choose the
appropriate product and design the circuit to avoid lurching.
 Intermediate stops.
When intermediate stop of a cylinder is performed with a 3 position closed center directional control valve, it is
difficult to achieve stopping positions as accurate and minute as with hydraulic pressure, due to the
compressibility of air. Furthermore, since valves and cylinders, etc. are not guaranteed for zero air leakage, it
may not be possible to hold a stopped position for an extended period of time. Contact SMC in case it is
necessary to hold a stopped position for an extended period.

－ 10 －
3. Maintenance
！
C a u t i o n
 When replacing seals, apply new grease for seals and then assemble.
If the product is operated without applying grease, seals will be significantly worn and lead to air leakage at an
early time.
3-1. Check
3-1-1. Daily checks
1) Smooth operation
2) Changes in piston speed and cycle time
3) Stroke
3-1-2. Periodic checks
1) Loosening of cylinder mounting bolts and rod end nut
2) Loosening or abnormal deflection of cylinder mounting frame
3) Smooth operation
4) Changes in piston speed and cycle time
5) External leakage
6) Stroke
7) Flaws on the rod
8) Drainage of air filter
Check the above items. If there is any abnormality, correct the abnormality and take proper
measures such as further screw tightening and greasing. Contact SMC for repair of the
cylinder, if necessary.
！
W a r n i n g
 Maintain the cylinder basically on the above points. Depending on situation, perform
necessary checks.
If handled improperly, malfunction and damage of machinery or equipment may occur.
 Machine maintenance, and supply and exhaust of compressed air.
Having machine serviced, check that measures are taken to prevent dropping of driven objects and run-away of
equipment, etc. Then, cut off the supply pressure and electric power and exhaust all compressed air from the
system.
When machinery is restarted, check that operation is normal with actuators in the proper positions.

－ 11 －
3-2. Maintenance
3-2-1. CM2Y Series
Cover and tube cannot be disassembled as they are joined by rolling crimping.
Rod seals can be replaced having the cylinder installed. Replacement procedure is
described below. (Refer to Fig. 1)
[Disassembly]
 Disassemble retaining ring 1 by using a tool for installing a C type retaining ring, seal
the port on rod cover by finger and pull out the piston rod. Then, seal ground 2 and
rod seal 3 can be disassembled.
[Grease application]
 Special grease is used for this cylinder. Please use our grease for smooth cylinders.
 Apply grease to inner and outer surface of new rod seal (replacement part). Also, fill
the grease in the groove.
[Installation]
 Mount a rod seal paying attention to the direction. When the rod seal goes through
the thread part of the piston rod end and width across flats, push it by rotating slowly
and securely install at the housing part of the rod cover.
 Secondly, mount seal ground 2 and then retaining ring 1.
Fig. 1. Replacing method of rod seals
Replacement part: Rod seals Grease for maintenance
Bore size (mm) Part No.
20 CM20Z-PS
25 CM25Z-PS
32 CM32Z-PS
40 CM40Z-PS
Net Weight Part No.
5g GR-L-005
10g GR-L-010
150g GR-L-150
Seal ground
Retaining ring
Rod seal
Port

－ 12 －
3-2-2. CQSY, CQ2Y Series
When malfunction due to air leakage of a cylinder occur, please replace with the below seal
kit.
！
C a u t i o n
For installation and removal, use an appropriate pair of pliers (tool for installing a C type
retaining ring).
Exercise caution even when using an appropriate pair of pliers. There is a possibility that
the retaining ring might come out from the tip of the pliers and fly away, which could injure
humans or damage the peripheral equipment. After installing the retaining ring, make
sure that it is placed securely in the ring groove before supplying air.
Replacement part: seal kit
Series Bore size Part No. Contents
CQSY
12 CQSY12-PS Piston seal: 1 pc.
Rod seal: 1 pc.
Tube gasket: 1 pc.
Grease (10g): 1 bag
16 CQSY16-PS
20 CQSY20-PS
25 CQSY25-PS
CQ2Y
32 CQ2Y32-PS
Piston seal: 1 pc.
Rod seal: 1 pc.
Tube gasket: 1 pc.
Grease (10g): 1 bag
40 CQ2Y40-PS
50 CQ2Y50-PS
63 CQ2Y63-PS
80 CQ2Y80-PS
100 CQ2Y100-PS
When only grease for maintenance is required, order it by the following numbers.
Net weight Part no.
5g GR-L-005
10g GR-L-010
150g GR-L-150

－ 13 －
3-2-3. CA2Y Series
Do not move cushion valves, as they are ineffective in adjusting.
When malfunction due to air leakage of a cylinder occur, please replace with the below seal
kit.
How to disassemble
Disassembly can be performed easily by loosening tie rods. As for assembly, fully check
that dust is not on it and apply grease to the sliding parts of the tube, piston, piston rod,
bushing and seal, etc. Assemble without giving damage to seals, etc. Tighten tie rod
nuts for 4 tie rods to have tensile force evenly.
Replacement part: seal kit
Bore size (mm) Part No. Contents
40 CA2Y40Z-PS Piston seal: 1 pc.
Rod seal: 1 pc.
Tube gasket: 2 pcs.
Grease(10g): 1 bag
50 CA2Y50Z-PS
63 CA2Y63Z-PS
80 CA2Y80Z-PS
100 CA2Y100Z-PS
When only grease for maintenance is required, order it by the following numbers.
Net weight Part No.
5g GR-L-005
10g GR-L-010
150g GR-L-150
！
C a u t i o n
1） When replacing mounting brackets, use socket wrench.
Using other tools would cause deformation of nuts and inferior workability. Refer to
the following table for sockets used.
Bore size
(mm)
Nut Dimension of
width across flats
Socket
40, 50 JIS B1181
M8×1.25 13 JIS B4636 Dodecagon socket 13
63 JIS B1181
M10×1.25 17 JIS B4636 Dodecagon socket 17
80, 100 JIS B1181
M12×1.75 19 JIS B4636 Dodecagon socket 19
2) Do not replace bushing.
If it is required to replace bushing, replace by a cover assembly since bushing is
pressed in.

－ 14 －
3) Do not disassembly trunnion type cylinder
As for trunnion type cylinder, it is difficult to align the axis centers of trunnion and
cylinder. Therefore, breakdown or reassembly may cause malfunction as it would not
have dimension accuracy.
3-2-4. CG1Y Series
When malfunction due to air leakage of a cylinder occur, please replace with the below seal
kit. Also, please pay full attention not to damage piston seal by the thread of cylinder tube
when removing the piston rod assembly.
There is the same concern when mounting it back to the cylinder tube after replacing the
piston seal.
If the piston seal gets damaged, malfunction and air leakage may occur.
Replacement: seal kit
Bore size (mm) Part No. Contents
20 CG1Y20Z-PS Piston seal: 1 pc.
Rod seal: 1 pc.
Tube gasket: 1 pcs.
Grease(10g): 1 bag
25 CG1Y25Z-PS
32 CG1Y32Z-PS
40 CG1Y40Z-PS
Note:
The seals for bore size 50 and above are not available.
They can not be disassembled.
Please contact our sales for further details.
When only grease for maintenance is required, order it by the following numbers.
Net weight Part no.
5g GR-L-005
10g GR-L-010
150g GR-L-150

－ 15 －
3-3. Consumables
3-3-1. Replacement parts
For replacement parts, refer to the maintenance page for each series.
Seals are not in airtight package at the time of delivery. Use them within a year.
For long-term storage, keep seals airtight (by putting them in a polyethylene bag and
additionally in a box) and store them as follows.
3-3-2. Storage of seals
1) Put seals in airtight packages and store them as they are.
2) Avoid direct sunlight and keep temperature and humidity low for storage.
Take special care to isolate and shield seals from equipment which is apt to generate
heat, radiation and ozone.
3) Be careful not to deform and damage seals by piling up a large volume of them or
putting weights on them.
4) Note that white powder may appear on the surfaces of rubber parts in storage though it
does not affect their performance.
4. Basic circuit of cylinder operation
A basic circuit to operate a cylinder with an air filter, regulator, solenoid valve and speed
controller is shown in the figure below.
スピードコントローラ
エアシリンダ
電磁弁
レギュレータ
エアフィルタ 圧力源
Figure 2 Basic circuit
Speed controller
Air cylinder
Solenoid valve
Regulator
Air filter
Pressure source

－ 16 －
5. Troubleshooting
Failure Main cause Measures
Operation is not
smooth.
1. Insufficient lubrication - Drain and other lubricants may wash away grease applied
to the inside of cylinder.
- Disassemble and clean cylinder to remove oils and drain.
Then, apply grease properly.
2. Improper cylinder
mounting position
- Make adjustments to mounting position to avoid
misalignment.
3. Insufficient air pressure - Supply adequate amount of pressure.
4. Failure of other system
components than cylinder
- Check all the system components one by one in order.
Output is
decreasing.
1. Air leak in piston seal - Replace cylinder. (CM2Y)
- Replace piston seal. (CA2Y, CQSY, CQ2Y, CG1Y)
2. Air leak in rod seal - Replace rod seal.
3. Decrease of air pressure - Secure necessary pressure and review the margin of
pressure source.
4. Insufficient air flow - Resistance of air passage may have increased due to
deformation and foreign matter. Repair and clean the
passage.
5. Improper cylinder
mounting position
- Mount cylinder in an unforced position.
6. Deformed moving part of
cylinder
- Replace cylinder. Make adjustments to correct abnormal
load and position at the time of reinstallation.
7. Insufficient lubrication - See the descriptions of non-smooth operation above.
Piston runs too
fast.
1. No use of speed controller - Use a speed controller appropriate to the size of cylinder.
2. Lack of fine adjustability of
speed controller
- Choose an adjustable speed controller to secure required
operation speed referring to the graph of flow rate
characteristics, etc.
Piston runs too
slow.
1. Excessively small direction
control valve
- Replace directional control valve with larger one.
2. High resistant system
component
- Make sure to use valve and other components of
appropriate sizes. Be careful not to overlook the sizes of
tubing and fittings. Use proper size components and piping
at exhaust side.
Cylinder
occasionally
stops operating.
1. Very low speed operation
(5mm/s or slower)
- Very low speed operation results in malfunction as it
reduces the difference in pressure between supply and
exhaust sides of cylinder to almost none and reduces a
sealing effect. Use cylinder within the specified range of
operating speed.
2. Failure of other system
components than cylinder
- Check all the system components one by one in order.
Cylinder stops
operating.
1. Damaged piston seal - Replace cylinder. (CM2Y)
- Replace piston seal. (CA2Y, CQSY, CQ2Y, CG1Y)
2. Failure of other system
components than cylinder
- Check all the system components one by one in order.
3. Insufficient air pressure - Supply adequate amount of pressure.
Piton rod is
deformed/
damaged.
1. High speed operation - High speed operation may cause deformation due to
impact force. Use cylinder within the specified range of
operating speed.
2. Influence of abnormal
external force
- Mechanical interferrence, offset load and excessive load
cause a deformation and damage to cylinder. Eliminate
these factors.

－ 17 －
Failure Main cause Measures
Speed controller
cannot control
cylinder speed.
1. Inappropriate selection of
speed controller
- Use a speed controller appropriate to desired cylinder speed.
2. Failure of speed controller - Replace speed controller.
Cylinder
operation has a
stick-slip.
1. Slow-moving cylinder - See the descriptions of occasional stops of cylinder operation
above.
2. No margin of cylinder
capacity
- Increase operating pressure.
- Replace cylinder with the one of larger bore size.
Cylinder starts
operating at
high speed right
after a long
suspention.
1. Diffenrence in cylinder
residual pressure between
continuous operation and
the first operation right
after a long suspention
- Consider using a valve that prevents quick extention of
cylinder.
Switch does
not turn on.
(Switch
sometimes
does not turn
on.)
1. Power supply failure and
improper connection
- Repair power supply and correct wiring.
2. Misaligned switch
mounting position
- Slide switch over the cylinder to confirm switch-on position and
set it again in position.
3. Weakened magnetic force - If magnetic power source is located near the cylinder, separate
them at a distance or install a shielding board between them.
- When cylinder is at a high temperature, keep it below 60°C by
controlling operating frequency, etc.
- Replace cylinder if switch still does not turn on after taking these
measures.
4. Lowering of switch
sensitivity
- Eliminate abnormalites in ambient temperature, vibration and
impact. Replace switch if problems still cannot be solved.
Switch does
not turn off.
(Switch
sometimes
does not turn
off.)
1. Melting adhesion of reed
switch contact
- Replace auto switch after confirming that voltage and load do not
exceed rated values.
2. Retention of switch-on
state due to external
magnetic field
- If magnetic power source is located near the cylinder, separate
them at a distance or install a shielding board between them.
- When cylinder is at a high temperature, keep it below 60°C by
controlling operating frequency, etc.
- Replace cylinder if switch still does not turn on after taking these
measures.

－ 18 －
6. Construction and material
Series CM2Y
Construction of CM2Y
Parts list
No. Description Materi al Qty. Surface treatment
1 Rod cover Aluminum alloy 1 Anodized
2A Head cover A Aluminum alloy 1 Anodized
2B Head cover B Aluminum alloy 1 Anodized
2C Head cover C Aluminum alloy 1 Anodized
3 Cylinder tube Stainless steel 1
4 Piston Aluminum alloy 1
5 Piston rod Carbon steel 1 Hard chrome plated
6 Bushing Bearing alloy 1
7 Seal retainer Rolled steel plate 1
8 Retaining ring Carbon steel 1 Phosphate coated
9 Bumper A Resin 1
10 Bumper B Resin 1
11 Retaining ring Stainless steel 1
12 Bushing for clevis Bearing alloy 1
13 Rod seal NBR 1
14 Piston seal NBR 1
15 Piston gasket NBR 1
16 Wear ring Resin 1
17 Nut Carbon steel 1 Nickel plated
18 Rod end nut Carbon steel 1 Zinc chromated
Basic type
Boss-cut type Integrated clevis type

－ 19 －
Series CQSY
Construction of CQSY12 to 25
Parts list
No. Descripti on Material Qty. Surface treatment
1 Cylinder tube Aluminum alloy 1 Hard anodized
2 Collar Aluminum alloy 1 Anodized
3 Piston Aluminum alloy 1
4 Piston rod Stainless steel 1
5 Retaining ring Carbon tool s teel 1 Phosphate coated
6 Rod end nut Carbon steel 1 Zinc chromated
7 Bumper A Urethane 1
8 Bumper B Urethane 1
9 Bushing Oil-impregnated
sintered metal 1
10 W ear ring Resin 1
11 Rod seal N BR 1
12 Piston seal NBR 1
13 Tube gask et NBR 1
DC: Basic type DCM: Rod end male thread