SMC Networks MXZ12 Series User manual

Doc. no.MX*-OMX0004
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PRODUCT NAME
Compact Cylinder with Linear Guide
MODEL / Series / Product Number
MXZ12(R,L)-**
MXZ16(R,L)-**
MXZ20(R,L)-**
MXZ25(R,L)-**

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Contents
Safety Instructions
1. Product Specifications
1-1 Specifications
2. Installation
2-1 Mounting
2-2 Air supply
2-3 Piping
2-4 Operating enviroment
2-5 Lubricating
2-6 Speed adjustment
2-7 Auto switch mounting
3. Maintenance
3-1 Precautions for maintenance
3-2 Replenishment of grease
3-3 Removing the product
3-4 Construction and parts

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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.

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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.
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.
契約などを行ってください｡
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.
契約などを行ってください｡
! 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.

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1. Product Specifications
1-1 Specifications
Model
MXZ12
MXZ16
MXZ20
MXZ25
Bore size(mm)
Φ12
Φ16
Φ20
Φ25
Pilot port
M3x0.5
M5x0.8
Fluid
Air
Action
Double acting
Operating pressure
0.1 to 0.7 MPa
Proof pressure
1.05MPa
Ambient and fluid tempetature
5 to 60°C
Piston speed (Average speed)
50 to 500mm/s
(Reference)maximum piston collision speed
700mm/s
Cushion
Rubber bumper
Auto switch
Solid state auto switch (2-wire, 3wire)
2-color indicator solid state
auto switch(2-wire, 3wire)
Stroke length tolerance 1)
+1.3 to 0 mm(when pressure is not applied)
1) Stroke length tolerance does not include the amount of bumper change.
2.Installation
2-1 Mounting
(1) Mounting of body
Two types of installation are available according to the machine or work piece.
1. Tap mounting
Model
Bolt
Tightening torque
(N・m)
Min. screw-in
depth (mm)
Max. screw-in
depth [mm]
MXZ12
M3x0.5
0.63
2.5
3.4
MXZ16
M3x0.5
3.4
MXZ20
M3x0.5
3.7
MXZ25
M3x0.5
4.1
If bolts are too long, they will come into contact with the cylinder tube, in this case, the product
will not be held correctly. Use bolts that are between the maximum and minimum screw-in depths in
length.

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2. Through-hole Mounting
Model
Bolt
Tightening torque (N・m)
L(mm)
MXZ12
M3x0.5
0.63
24.5
MXZ16
M3x0.5
25.5
MXZ20
M3x0.5
29.7
MXZ25
M3x0.5
32.2
(2) How to mount the workpiece
Mounting to the Table Using the Tapped Holes
Model
Bolt
Tightening torque
(N・m)
Min. screw-in
depth (mm)
Max. screw-in
depth [mm]
MXZ12
M3x0.5
0.63
5
6
MXZ16
M3x0.5
5
6
MXZ20
M3x0.5
5.5
6.3
MXZ25
M3x0.5
6.5
8.3
Caution
1) If bolts are too long, they will come into contact with the bracket or flange during retraction, this wi
l l lead to the guide malfunction. Do not use bolts that are over the maximum screw-in depth in
length.
2) When tightening the screws into the table surface, be careful to prevent applying a torque to the
guide.

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(3) Precautions for mounting
Caution
1) Do not dent, scratch or cause other damage to thebody, table and end plate mounting
surfaces.This may cause unevenness in the mounting surface, play in the guide or an increase in
the sliding resistance.
2) Do not dent, scratch or cause other damage to the surface over which the rail and guide will
move. This may cause play or an increase in the sliding resistance.
3) Do not apply strong impact or an excessive moment while mounting a workpiece. If an external
force over the allowable moment is applied, it may cause play in the guide or an increase in the
sliding resistance.
4) Select the proper connection with the load which has external support and/or guide mechanism
on the outside, and align it properly.
5) Do not attach magnets to the rail and guide unit. Since the rail and guide are made of a magnetic
substance, it could become magnetized if touched by a magnet etc. This could cause auto switch
malfunction.
6) When mounting the product and a jig, tighten it with screws of appropriate length at an
appropriate torque. Tightening with a torque above the specified torque can cause malfunction,
while insufficient tightening can cause slippage and dropping.
(4) Precautions
1. For Transfer
Caution
If the operating speed is increased after setting the operating conditions such as overhang and
operating speed, the stopping impact force will increase which causes an excessive moment to be
generated; this will lead to the failure of the guide. Do not increase the operating speed after setting
the operating conditions.
If the adjusting screw of the speed controller is loosened, the operating speed will increase, so the
screw should be tightened completely.

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2. For Pressing (Clamping)
Caution
Pressing work should be performed in line with the center of the guide.
If there is an offset in the L2 direction, an eccentric load will be applied to the guide. In this case,
pressing operations should not be performed.
3. For Stopper
Caution
1) If a load is applied in the direction as shown on the right side, an eccentric load will be applied to
the guide. In this case, the product should not be used as a stopper.
2) The transferred object should be stopped in line with the center of the guide.
If there is an offset in the L2 direction, an eccentric load will be applied to the guide. In this case, this
product should not be used as a stopper.

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3) Place a bracket so that it contacts the machined corner of the surface for mounting or insert a pin
into the through hole on the side to prevent sliding.
(5) Others Caution
Warning
1) Do not place your hands or fingers between the table and the bracket.
Hands or fingers could get caught between the table and the bracket when the piston rod retracts. If
hands or fingers are caught, it can lead to injury.
Caution
1) Do not disassemble and modify the product.
2) If the cylinder is stopped at an intermediate position by external stopper, position of the steel balls
that make up the liner guide may become displaced.
When the intermediate stop is released while the steel ball position is displaced, the cylinder may
not be able to achieve a full stroke with minimum operating pressure.
In this case, increase the supply pressure once up to the full stroke, then use the cylinder with the
specified pressure.

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2-2 Air supply
Warning
1) Use clean air.
Do not use compressed air which contains chemicals, synthetic oils containing organic solvents,
salts or corrosive gases, etc., as this can cause damage or malfunction.
Caution
1) Install an air filter.
Install an air filter close to the upstream side of the valve. Choose the filter of 5μm of filtration.
2) Install an aftercooler, air dryer or water droplet separator.
Do not use compressed air containing a lot of condensate, which can cause the operating failure of
the product and other pneumatic equipment. Install an aftercooler, air dryer or water droplet
separator.
3) Use the product within the specified fluid and ambient temperature range.
When operating at temperatures below 5oC, water in the circuit may freeze and cause breakage of
seals or malfunction. Corrective measures should be taken to prevent freezing.
For compressed air quality, refer to SMC catalog "Compressed Air Purification System".
2-3 Piping
Caution
1) Before piping
Before piping, perform air blow (flushing) or cleaning to remove any cutting chips, cutting oil, dust,
etc. from the piping.
2) Sealant tape
When installing piping or a fitting into a port, prevent cutting chips and sealant material from getting
inside the piping.
When a pipe tape is used, leave 1.5 to 2 thread ridges exposed at the end of the pipe.

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2-4 Operating environment
Warning
1) Do not use in environments where there is a danger of corrosion.
Refer to the construction drawings regarding cylinder materials.
2) Install a cover over the rod if it is used in an area that is dusty, or in an environment in which
water or oil splashes on the cylinder.
3) When using auto switches, do not operate in an environment with strong magnetic fields.
As this can cause the switch to malfunction.
Caution
1) Do not use in an environment where the product is directly exposed to liquid, such as cutting oils.
If cutting oil, coolant or oil mist splashes the product, play, increased sliding resistance and air
leakage can result.
2) Do not use the product in an environment directly exposed to foreign matter such as dust, cutting
chips and spatter.
This can result in play, increased operating resistance, air leakage, etc.
If the product is used in such an environment, contact SMC.
3) Shade the sunlight if the product is applied with direct sunshine.
4) Shield the product from radiated heat generated by nearby heat sources.
When there is a heat source surrounding the product, the radiated heat from the heat source may
exceed the operating temperature range. Protect it with a cover, etc.
5) Do not operate in a location subject to vibration or impact.
Contact SMC when using in this kind of location, as damage and operation failure to the fitting can
result.
6) Do not use the product in applications where excessive external force or impact force is applied
to it.
Malfunction or the damage of the table can result.
Although the table has adequate strength, if it is damaged, protect your hands with gloves. Hurts
can result.
2-5 Lubricating
Caution
Lubrication of non-lubricating cylinder
The product has been lubricated for life at manufacturer, and does not require lubrication in service.
If a lubricant is used in the system, use turbine oil Class 1 (with no additive) ISO VG302. Stopping
lubrication later may lead to malfunction because the new lubricant will displace the original
lubricant. Therefore, lubrication must be continued once it has been started.
2-6 Speed adjustment
Caution
Piston speed should be controlled gradually from low speed to the specified speed with a speed
controller.

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2-7 Auto Switch Mounting
Precautions for mounting
Caution
1) Auto switch mounting tool
For the tightening of the mounting screws (attached to the auto switch), use a watchmaker's
screwdriver with a handle diameter of about 5 to 6 mm.
2) Tightening torque
0.05 to 0.15N･m
As a guide, turn an additional 90 degrees from the position where it feels tight.
■Tightening Torque
Tightening Torque for Auto Switch Mounting Screw (N･m)
Auto switch model
Tightening torque
D-M9 (V)/M9 W(V)
0.05 to 0.15
3) Please refer the table below for proper mounting position of the auto switch (when the stroke end
is detected).
For the setting of the auto switch, make adjustment checking the actual operating condition.
Minimum Stroke for Auto Switch Mounting
Auto switch
model
Mounring
D-M9□V
D-M9□WV
D-M9□AV
D-M9□
D-M9□W
D-M9□A
(1) Bottom mounting
5
10 *2)
15 *1)
15 *1)
(2) When mounting an auto switch
into the groove from the top*3)
15
15
30
30
(3)When mounting the autoswitch
into the groove through the
mounting surface.
5
10 *2)
5
10 *2)
*1) For 5 and 10 mm strokes, lead wires will interfere with mounting surface.
*2) For 5 mm stroke, it is possible to mount an auto switch, but 2-color display may not be available.
*3 )When mounting an auto switch from the top with 5 or 10 mm strokes, use a D-F8 auto switch.

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(1) Bottom mounting
(When mounting an auto switch
before holding the product)
(2) When mounting an auto switch
into the groove from the top
(When mounting an auto switch
into the groove from the top after
installation)
(3)When mounting the autoswitch into
the groove through the mounting
surface.

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3. Maintenance
3-1 Precautions for maintenance
Warning
1) Maintenance should be performed according to the procedure indicated in the Operation Manual.
Improper handling can cause damage and malfunction of equipment and machinery.
2) 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 and/or equipment running away, etc. Cut the supply pressure and electric power and
exhaust all compressed air from the system. Before restarting the equipment, confirm that
measures are taken to prevent sudden movement.
3-2 Replenishment of grease
Caution
1) Applying additional grease on the guide
This product has been lubricated for life by the manufacturer, and it is not necessary to apply further
grease. If grease is replenished, use grease pack.
Grease pack
Grease application part
Grease pack No.
Mass
Guide
GR-S-010
10g
GR-S-020
20g
3-3 Removing the product
Caution
Do not remove the bolts holding the linear guide when removing the product. Incorrect handling of
the product may cause mounting accuracy failure.

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3-3 Construction and parts
Mounting screw
Basic type/Component parts
No.
Description
Material
Note
1
Rail
Stainless steel
Heat treatment,
Rust proof treatment
2
Guide
Stainless steel
Heat treatment
3
Retainer
Stainless steel
4
Roller stopper A
Stainless steel
5
Roller stopper B
Stainless steel
6
Table
Aluminum alloy
Hard anodized
7
Bracket
Stainless steel
8
Base plate
Stainless steel
9
Floating bushing A
Stainless steel
10
Floating bushing B
Stainless steel
11
Hexalobular socket head
cap screw
Chrome molybdenum steel
Electroless nickel plating
12
Hexagon socket head cap
screw
Chrome molybdenum steel
Zinc chromate treatment
13
Hexalobular socket flat
head screw
Chrome molybdenum steel
Nickel plating
14
Steel ball
High carbon chromium
bearing steel
15
Compact cylinder
JCDQ
Mounting screw/Component parts
No.
Description
Material
Note
16
Hexagon socket head cap
screw
Chrome molybdenum steel
Zinc chromate treatment

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Revision history
4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 JAPAN
Tel: + 81 3 5207 8249 Fax: [phone]
URL https://www.smcworld.com
Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.
© 2011 SMC Corporation All Rights Reserved