This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X40S, the same code under the new prefix. The ACE replacement is a current-production ISO 21287 compact cylinder in the same bore, stroke and force class, with a matching short body and the same mounting-accessory family, so it fits the same envelope. Confirm mounting-interface dimensions against the ACE datasheet before ordering.
Airtac ACPD Double Rod Compact Cylinder ACPD20X40S
The AirTAC ACPD Double Rod Compact Cylinder ACPD20X40S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 40mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X40S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM6×1.0
- StatusDiscontinued → ACED20X40S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACPD Double Rod Compact Cylinder ACPD20X40S
A double acting, double-rod compact cylinder with a 20 mm bore and 40 mm stroke, the ACPD20X40S pushes a piston rod out of both covers, so thrust is identical in each direction: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa, both taken from the rod-side area. The through-rod resists rotation and side load, gives a symmetric mounting point, and lets the rear rod carry a sensor flag. This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke signalling. Note that the ACPD family is discontinued; the current-production successor is the ACED20X40.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and guarding where a full-length body will not fit. A fixed TPU bumper at each end decelerates the piston, and the hard-anodized aluminium body paired with an S45C hard-chrome rod stands up to shop-floor duty. Speed range is 30-500 mm/s across 0.15-1.0 MPa (22-145 psi).
Airtac ACPD Double Rod Compact Cylinder ACPD20X40S Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X40S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X40S |
| Bore size | Ø20 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed bumper (both ends) |
| Max standard stroke | Up to 100 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED20X40S (ISO 21287) carries the same bore/stroke/force class; confirm mounting-interface dimensions against the ACE datasheet before installation. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G.
Theoretical Output Force (Ø20mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 118 N |
| 0.7 MPa | 165 N |
| Max (@1.0 MPa) | 24 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac ACPD Double Rod Compact Cylinder ACPD20X40S
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| S | Optional built-in magnet for sensor position sensing (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
Replacement mapping (swap P for E): ACP→ACE, ASP→ASE, ATP→ATE, ACPD→ACED, ACPJ→ACEJ. ACP-family: ACP (double acting), ASP / ATP (single acting push / pull), ACPD (double rod), ACPJ (double rod, adjustable stroke).
Where the Airtac ACPD Double Rod Compact Cylinder ACPD20X40S Is Used
Reciprocating test fixtures
The through-rod lets a small burn-in or leak-test fixture clamp from one side while the rear rod carries a switch flag, with 117.8 N of equal force on both strokes at 0.5 MPa.
Pick-and-place gantries
With the -S magnet fitted, CMSE or DMSE switches confirm extend and retract on a 40 mm stroke inside a compact gantry axis, and the symmetric rod keeps the toolplate square.
Small-part ejection on assembly lines
A rear rod can kick a finished connector or bushing off a nest while the front rod returns a stop pin, all within the short body length of a bore 20 compact cylinder.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD20X40S with the ACED20X40S
At 117.8 N per side at 0.5 MPa, bore 20 sits between the 16 mm bore (75.4 N) and the 25 mm bore (206.2 N), so step up to 25 mm if your fixture needs more than about 120 N of working force. Stroke 40 mm is well inside the 100 mm maximum standard stroke for this bore. The female M6x1.0 rod thread takes standard I/Y knuckles, and FA/FB flange or LB foot mounts bolt to the ISO 21287 face. Like any plain double-rod cylinder it will drift when air is lost, so add a rod lock or pilot check valve for a held load. Before ordering, confirm the ACED20X40 replacement matches your ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACED20X40S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACPD Double Rod Compact Cylinder ACPD20X40S FAQ
Yes. Because a rod exits both covers, both strokes use the rod-side area, so force is equal both ways: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa, with a maximum of 24.0 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the M5x0.8 port is set by the 20 mm bore. Remember the model is discontinued; ACED20X40 is the direct successor.
The hard-anodized aluminium body accepts FA/FB flange or LB foot mounts on the ISO 21287 face, and the female M6x1.0 rod thread takes I/Y knuckles. This version carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches can be mounted directly on the body for stroke signalling. A fixed TPU bumper at each end decelerates the piston but does not hold or brake a load, and the short body runs about 50% shorter than an ISO 15552 profile cylinder.
Related AirTAC ACE Cylinders
Request a Quote for the ACED20X40S
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X40S replacement — usually within 7-8 hours.