This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X90SB, 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.

The AirTAC ACPD Double Rod Compact Cylinder ACPD20X90SB is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 90mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X90SB (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting with a rod leaving both covers, the ACPD20X90SB pushes and pulls with identical output: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa in either direction, because both strokes work on the rod-side area of the 20 mm bore. The through-rod resists rotation and side load, gives a symmetric mount, and the rear rod can carry a sensor flag, while fixed TPU bumpers decelerate the piston at each end. This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be clipped straight onto the body.
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 guarded stations. Note that the ACPD family is discontinued; the current-production direct is the ACED20X90, so confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X90SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X90SB |
| Bore size | Ø20 mm |
| Stroke | 90 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 ACED20X90SB (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.
| 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).
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×90 | 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).
The 117.8 N both-ways force clamps small turned parts in a machining fixture, and the through-rod lets the clamp actuate from either cover in a cramped toolplate.
A 90 mm stroke diverts cartons between conveyor lanes at 30-500 mm/s, with the rear rod carrying a CMSE switch flag for position feedback.
Size both ways before ordering: the 16 mm bore gives 75.4 N at 0.5 MPa and the 25 mm bore gives 206.2 N, so the 20 mm at 117.8 N sits between them for light clamping and transfer work. The 90 mm stroke is within the 100 mm standard range for this bore. If the load must stay put when air is lost, this cylinder will drift - add a rod lock or pilot check valve instead. LB foot or FA/FB flange mounts bolt to the ISO 21287 face, and the male rod thread (B code) suits I/Y knuckles. Order the ACED20X90 as the current replacement.
Replacement checklist
It is a double-rod cylinder, so force is equal both ways: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa per direction, 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 port is M5x0.8 because the bore is 20 mm.
The hard-anodized aluminium body follows the short ISO 21287-class format, saving about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at each end. This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches mount directly on the body. The ACPD is discontinued - the ACED20X90 is the current direct, so confirm ISO 21287 mounting dimensions before ordering.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X90SB replacement — usually within 7-8 hours.