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Medium bore size cylinder CMA2

Medium bore size cylinder CMA2

Product catalog summary

1. Product Overview

The CMA2 Series comprises medium bore size double-acting pneumatic cylinders with bore sizes of 20 mm, 30 mm, and 40 mm. Designed for industrial automation, these cylinders support various mounting styles and customizable stroke lengths up to 700 mm.

2. Series Variations and Mounting Styles

Multiple series variants include SCP*2, CMK2, CMA2, SCM, SCG, among others.
Mounting options cover Basic (00), Axial foot (LB, LS), Rod side flange (FA), Head side flange (FB), Eye bracket (CA), Clevis bracket (CB), Rod side trunnion (TA), Head side trunnion (TB), and Bellows types (J, L).
Stroke lengths can be customized in 1 mm increments within specified limits.

3. Technical Specifications

Parameter	Details
Bore Sizes	20 mm, 30 mm, 40 mm
Actuation	Double acting
Working Fluid	Compressed air
Max Working Pressure	0.7 MPa
Min Working Pressure	0.1 MPa
Withstanding Pressure	1.05 MPa
Ambient Temperature	-10 to 60°C (no freezing)
Port Size	Rc 1/8
Stroke Tolerance	+1.0 to +1.2 mm depending on bore size
Working Piston Speed	50 to 500 mm/s (up to 1000 mm/s for some models)
Cushion	None
Lubrication	Not required; if used, turbine oil Class 1 ISO VG32
Allowable Energy Absorption	Not designed for large external energy absorption; external buffers recommended

4. Stroke Lengths and Limitations

Standard strokes: 25, 50, 75, 100, 150, 200, 250, 300 mm.
Maximum stroke up to 700 mm depending on bore size.
Minimum stroke with switches: 15 mm (some models 10 mm).
Single foot type (LS) max stroke: 50 mm; bellows type J requires >25 mm stroke.
Exceeding max stroke may cause specification deviations; consult manual for details.

5. Weight and Accessories

Weight varies by bore size and mounting style; e.g., basic type ranges from 0.24 kg (20 mm bore) to 0.81 kg (40 mm bore) at zero stroke.
Additional 0.014 kg per 10 mm stroke increment.
Switches add approx. 0.08 kg each.
Accessories include rod eyes, clevis brackets, bellows, and mounting brackets.

6. Switch Specifications

Switch types: Reed switches (R0, R1, R2, R3, etc.) and proximity switches (2-wire, 3-wire).
Output methods: NPN, reed contact, proximity sensor outputs.
Power voltage: 4.5 VDC to 265 VAC depending on switch.
Load current: 5 mA to 200 mA.
Indicators: LED (single/two-color), neon lights for ON/OFF status.
Leakage current typically ≤1 mA.

7. Ordering Information

Model number format includes series, mounting style, bore size, stroke length, switch model and quantity, options, and accessories.
Example: CMA2-FA-20-50-R0-R-PI indicates 20 mm bore, 50 mm stroke, rod side flange, Reed R0 switch, rod eye accessory.

8. Mounting Brackets and Materials

Brackets correspond to mounting styles and bore sizes (e.g., M1-LB-20 for axial foot 20 mm bore).
Materials: SPCC, S50C, SS400 steel, aluminum alloy, brass, stainless steel, nitrile rubber, dry bearings.
Kits include nuts, washers, pins.

9. Internal Structure and Components

Key parts: piston rod (stainless or carbon steel), rod packing seal (nitrile rubber), bush (dry bearing), cylinder tube and piston (aluminum alloy), magnet, wear ring (polyacetal resin).
Surface treatments: zinc chromate plating, industrial chrome plating, hard alumite anodizing.
Port nipples: brass with nickel plating for copper/PTFE free specs.

10. Dimensional Data

Detailed dimensions for bore sizes 20, 30, 40 mm across mounting styles.
Includes cylinder length, mounting hole sizes, port locations, switch installation positions.
Stroke length affects overall cylinder length and mounting dimensions.
Tolerances and installation clearances specified.

11. Important Notes and Recommendations

Cylinders are not designed to absorb large external energy; external buffers recommended.
Custom stroke lengths must respect min/max limits per mounting style.
Consult manufacturer for stroke lengths under 25 mm with bellows type J.
Lubrication generally unnecessary; if applied, use specified turbine oil.
Switch installation affects minimum stroke and mounting dimensions.

12. Electrical Specifications and Switch Types (CMA2-E Series)

Operating voltage: nominal 28 VDC, max 30 VDC.
Indicators: LED ON, neon OFF, relay-based.
Switch models: R0, R1, R2, R2Y, R3, R3Y, R4, R5, R6 with variations including splash-proof, proximity, reed, terminal box types.
Load voltage/current: 5 to 200 mA, 12/24 VDC to 110/220 VAC depending on switch.
Leakage current: 0 to 2 mA depending on model and voltage.

13. Ordering Instructions (CMA2-E Series)

Model format: CMA2-E-[Mounting Style]-[Bore Size]-[Stroke Length]-[Switch Model]-[Switch Quantity]-[Option]-[Accessory]
Mounting styles include side foot mount (LS), flange (FA), etc.
Bore sizes: 20, 30, 40 mm.
Stroke lengths customizable 1 to 700 mm in 1 mm increments.
Switch quantity and position options available.
Options include piston rod material changes, rod eye, clevis, accessories.
Lead wire lengths: standard 1 m, optional 3 m or 5 m.
Some options are mutually exclusive.

14. Dimensional Data and Mounting Details (CMA2-E Series)

Dimensions provided for bore sizes 20, 30, 40 mm with mounting brackets, switch positions, mounting holes.
Mounting types: side foot mount, flange installation.
Thread sizes: M8 x 1.0, M10 x 1.25, M12 x 1.5 depending on bore.
Includes width across flats, spot face depths, mechanical installation details.

15. Accessories and Components

Rod Eye (M1-I): steel, specified per bore size with dimensions and mass.
Rod Clevis (M1-Y): steel with pin and washer, dimensions vary by bore.
Clevis Bracket (M1-B2): clevis and trunnion types, steel, includes pins and split pins except trunnion.
Pins, washers, snap rings included for secure assembly.

16. Notes and Recommendations

Minimum stroke length with switch referenced on page 206.
Accessories generally include pins and washers except specific types.
Verify model numbers and accessory compatibility for correct assembly.

Critical Information Summary

Ensure voltage and current ratings match application to prevent damage.
Custom stroke lengths enable precise application fit.
Switch and indicator selection should align with load type and feedback needs.
Dimensional accuracy is essential for proper mounting and operation.
Accessory choice impacts installation and maintenance; verify compatibility.

This structured summary consolidates the CMA2 Series medium bore pneumatic cylinders’ technical data, including specifications, mounting options, switch types, ordering instructions, dimensional details, and critical operational recommendations to support proper selection and application.

Catalog excerpts

Series variation Medium bore size cylinder CMA2 Series CMA2 Series Series variation :Custom order Mounting style Double acting Copper and PTFE free Clevis bracket Same port position Piston rod material change Head side trunnion type Rod side trunnion type Clevis bracket type Head side flange type Rod side flange type Standard stroke length (mm) Axial foot type single Bore size Axial foot type both sides Available stroke length (mm) Basic type Custom stroke length (Per mm) Double acting direct mounting Medium bore size cylinder Standard type

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Medium bore size cylinder Standard type with switch Bore size: Double acting cylinder single rod type Descriptions Bore size mm Actuation Working fluid Max. working pressure MPa Min. working pressure MPa Withstanding pressure MPa Ambient temperature Port size Stroke tolerance mm Working piston speed mm/s Cushion Lubrication Allowable energy absorption J Double acting Compressed air 0.7 0.1 1.05 -10 to 60 (no freezing) Rc1/8 +1.0 +1.2 (up to 1000) 0 (up to 200), 0 50 to 500 No Not required (when lubricating, use turbine oil Class 1 ISO VG32.) 0.024 0.05 0.093 Note: This product cannot absorb large...

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Switch specifications Proximity 2-wire Descriptions Proximity 3-wire R2Y (2-color indicator type) Programmable controller dedicated Programmable controller, relay, IC circuit, solenoid valve Output method Power voltage Programmable controller, Relay, small solenoid valve Load voltage and current Descriptions Applications Load voltage and current Light Leakage current 150 mA or less Red/green LED (ON lighting) 1 mA or less with 100 VAC 2 mA or less with 200 VAC Leakage current Reed 2-wire R0 Relay, programmable controller 12/24 VDC, 5 to 50 mA 110 VAC, 7 to 20 mA 220 VAC, 7 to 10 mA LED ON lighting...

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CMA2 Series How to order Without switch With switch Mounting style Note 1 Bore size Stroke length Note on model no. selection Note 1: The maximum stroke of the single-end foot type (LS type) is 50 mm. Note 2: Refer to page 194 for min. stroke length with switch. Note 3: For bellows "J" type, stroke length should be longer than 25 mm. Consult with CKD when stroke length is shorter than 25 mm. Note 4: With the P type, the port alignment is adjusted with spacers so stroke direction dimensions (X, LL, XE dimensions) have a tolerance of 0 to 1.5 mm. Note 5: Instantaneous maximum temperature is the...

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Only switch body Switch body + mounting bracket Mounting bracket Bore size (Item B on previous page) Switch model no. (Item D on previous page) Bore size (Item B on previous page) Switch model no. (Item D on previous page) How to order mounting bracket Mounting bracket Axial foot type (LB/LS) Flange type (FA/FB) Eye bracket type (CA) Clevis bracket type (CB) Trunnion type (TA/TB) Note 1: The above mounting bracket model no. includes nut, toothed washer and parallel pin etc. Note 2: Two sets of "M1-LB-*" in the above table are required for the axial direction foot (double-sided). JSK/M2 JSG JSC3...

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Internal structure and parts list No. Parts name 1 Rod nut 2 Piston rod Material Remarks Zinc chromate Steel 20, 30 stainless steel Industrial-use chrome plating 40 carbon steel Rod packing seal Nitrile rubber Bush Dry bearing Rod cover Steel Cylinder gasket Nitrile rubber Cylinder tube Aluminum alloy Aluminum alloy Piston A Piston packing seal Nitrile rubber Plastic Magnet Polyacetal resin Wear ring Note 1 Zinc chromate No. Parts name 12 Piston B 13 14 15 16 Nut 17 The toothed washer 18 Port nipple With switch 19 Switch body 20 Band 21 Pan head machine screw 22 Bracket Hard alumite Note 1: Oil...

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CMA2 Series Double acting with switch R type basic type with switch (00) X + stroke length LL + stroke length HC Width across flats B (with bellows) X + stroke length LL + stroke length HC Width across flats B R type switch terminal box basic type (00) (with bellows) Symbol Bore size (mm) 20 30 40 Symbol Bore size (mm) 20 30 40 RD: Rod side max. sensitive position HD: Head side max. sensitive position Basic type (00) basic dimensions A B C D E HA 20 23 25 Medium bore size cylinder Standard type Note 1: Port nipple is attached to rod cover for 20 . Note 2: For dimensions, round up decimal point...

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Axial foot type (LB) (with bellows) MVC Width across flats B FC* STK ULK* Note 1: Refer to basic type (00) about dimensions of rod width across flat. Note 2: Port nipple is attached to rod cover for 20 . Note 3: For dimensions, round up decimal point or less. Note 4: Refer to page 212 for dimensions of accessories. Symbol Bore size (mm) Symbol Bore size (mm) (stroke length/3) + 6 (stroke length/3.25) + 7 (stroke length/3.25) + 7 Single axial foot type (LS) (with bellows) Width across flats B Note 1: Up to 50 mm stroke. Note 2: Refer to basic type (00) about dimensions of rod width across flat....

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CMA2 Series Double acting with switch Rod side flange type (FA) D Width across flats B (with bellows) MSD* FC* STK ULK* Note 1: Refer to basic type (00) about dimensions of rod width across flat. Note 2: Port nipple is attached to rod cover for 20 . Note 3: For dimensions, round up decimal point or less. Note 4: Refer to page 212 for dimensions of accessories. Symbol Bore size (mm) 20 30 40 Symbol Bore size (mm) 20 30 40 (stroke length/3) + 6 (stroke length/3.25) + 7 (stroke length/3.25) + 7 Head side flange type (FB) KK Width across MB flats B (with bellows) Symbol Bore size (mm) 20 30 40 Symbol...

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Rod side trunnion type (TA) (with bellows) Width across flats B Note 1: Refer to basic type (00) about dimensions of rod width across flat. Note 2: Port nipple is attached to rod cover for 20 . Note 3: For dimensions, round up decimal point or less. Note 4: Refer to page 212 for dimensions of accessories. Symbol Bore size (mm) Symbol Bore size (mm) (stroke length/3) + 6 (stroke length/3.25) + 7 (stroke length/3.25) + 7 Rod side trunnion type (TA) with bracket (option symbol B2) Width across flats B (with bellows) SHC GLC Note 1: Refer to basic type (00) about dimensions of rod width across flat....

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