This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED32X55SB, 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 ACPD32X55SB is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø32mm bore and 55mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED32X55SB (ISO 21287 ACE), in the same bore, stroke and force class.
The ACPD32X55SB is a double acting, double-rod compact cylinder in the DIN-standard ACP family, now discontinued. A 12 mm rod exits both covers, so every stroke delivers the same 345.6 N at 0.5 MPa (483.8 N at 0.7 MPa) in each direction - there is no push/pull imbalance because both sides work on the rod-side area. The male rod thread (B code) bolts straight to tooling, and the back-end rod can carry a sensor flag or a second fixture.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs, guarding and gantry slides. This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be clamped on for end-of-stroke sensing. As a rule of thumb, plan on roughly 207 N (about 21 kg of vertical thrust) of usable work at 0.5 MPa rather than the full rating. Note this model is discontinued: the current-production direct is the ACED32X55 in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD32X55SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED32X55SB |
| Bore size | Ø32 mm |
| Stroke | 55 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 200 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED32X55SB (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 | 346 N |
| 0.7 MPa | 484 N |
| Max (@1.0 MPa) | 70 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). |
|---|---|
| 32 | Bore size in mm. |
| ×55 | 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 lets one cylinder clamp a machined aluminium bracket from both sides with equal 345.6 N force, so the part seats square without a reaction block.
A 55 mm stroke at 30-500 mm/s kicks cartons off a conveyor; the fixed TPU bumper at each end softens the stop and the rear rod drives a position flag for the PLC.
With the -S magnet fitted, CMSE or DMSE switches on the body confirm end positions on a rotary indexing table where a single-rod cylinder cannot mount a rear flag.
At 345.6 N per side at 0.5 MPa, the 32 mm bore covers light clamping and transfer work; step down to the 25 mm bore (206.2 N) for smaller fixtures or up to the 40 mm bore (571.8 N) when the load grows. A plain double-rod cylinder does not hold position when air is lost - the piston drifts - so add a rod lock or pilot check valve for a held load. The 55 mm stroke sits well inside the 200 mm standard range for this bore, so it is a catalogue build. Mounting uses FA/FB flanges or LB feet on the ISO 21287 face, and the -S magnet on this unit accepts CMSE / DMSE switches. Replacement: order the ACED32X55.
Replacement checklist
Yes - it is a double-rod cylinder, so force is equal both ways: 345.6 N at 0.5 MPa and 483.8 N at 0.7 MPa per side, with a maximum of 70.5 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 55 mm stroke is within the 200 mm standard range for the 32 mm bore.
Order the ACED32X55, the current-production ISO 21287 replacement (swap the P for an E). It matches the same 32 mm bore, 55 mm stroke and force class, with FA/FB flange and LB foot mounting on the same face. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions against your fixture before the swap.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED32X55SB replacement — usually within 7-8 hours.