This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X50SB, 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 ACPD25X50SB is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø25mm bore and 50mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED25X50SB (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting with a rod leaving both covers, the ACPD25X50SB pushes and pulls with identical force: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa in either direction, because both strokes work on the rod-side area. The 25 mm bore carries a 10 mm through-rod with a male thread on each end, and the fixed TPU bumper at both covers decelerates the piston at end of travel. Speed range is 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding. The through-rod resists rotation and side load, and the rear rod can carry a sensor flag. This model is discontinued; the current direct is ACED25X50, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X50SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X50SB |
| Bore size | Ø25 mm |
| Stroke | 50 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 150 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED25X50SB (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 | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 through-rod on a 25 mm bore moves a plastic housing between an inspection nest and an outfeed chute with equal 206.2 N force in both directions at 0.5 MPa.
With the -S magnet fitted, a DMSE switch on the front rod signals top-of-stroke on a 50 mm pallet lift, while the rear rod drives a mirror flag for PLC interlocks.
The short body fits inside a CNC jig where a full-length profile cylinder cannot, clamping aluminum extrusions with about 12 kg of vertical lift margin at 0.5 MPa.
At 206.2 N per side, this 25 mm double-rod unit suits symmetric push-pull tasks; step down to the 20 mm bore (117.8 N) for lighter clamps or up to 32 mm (345.6 N) for heavier tooling. The piston drifts if air is lost, so add a rod lock or pilot check for held loads. This -S version carries the optional magnet, so CMSE or DMSE switches mount directly, and the male rod thread (B code) takes I/Y knuckles. Order ACED25X50 as the current-production replacement.
Replacement checklist
No - this is a double-rod cylinder, so a rod exits both covers and both strokes use the rod-side area. Output is 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa in either direction, with a maximum of 42.0 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s.
Order ACED25X50, the current-production ISO 21287 successor made by swapping the P for an E. It matches the same 25 mm bore, 50 mm stroke and force class, but because the ACP is DIN-standard you should confirm the ISO 21287 mounting dimensions before swapping. The fixed TPU bumper, M5x0.8 port and optional -S magnet for CMSE / DMSE switches carry over in the family.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED25X50SB replacement — usually within 7-8 hours.