This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE63X125B, 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 ACP Compact Cylinder ACP63X125B is a double acting DIN-standard tight/compact air cylinder with a Ø63mm bore and 125mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE63X125B (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder in the DIN-standard ACP series, the ACP63X125B pairs a 63 mm bore with a 125 mm stroke and a male rod thread (the B code). At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N, rising to 2182.1 N at 0.7 MPa, with a theoretical ceiling of 317.9 kgf at 1.0 MPa. Its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight gantries and guarding where a full-length body cannot. Operating range is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof rating, and speed runs 30-500 mm/s.
This unit is discontinued; the current-production direct is ACE63X125, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping. The hard-anodized aluminium body carries a fixed TPU bumper at both ends, and the optional -S magnet code enables CMSE / DMSE switches - this model, without the S, has no magnet fitted.
| Model | Airtac ACP Compact Cylinder ACP63X125B |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE63X125B |
| Bore size | Ø63 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 250 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACE63X125B (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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | 2041 N |
| Max (@1.0 MPa) | 318 kgf | |
The ACE63X125B produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×125 | 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).
With 1558.6 N of push at 0.5 MPa, the 63 mm bore clamps steel housings in machining fixtures, and the short body fits inside the fixture envelope.
A 125 mm stroke ejects cartons or trays from a conveyor lane at up to 500 mm/s, with the fixed TPU bumper softening each end of travel.
For this 63 mm bore, expect 1558.6 N push at 0.5 MPa; step down to the 50 mm bore (981.7 N) for lighter clamping or up to the 80 mm bore (2513.3 N) for heavier presses. The male rod thread (B code) suits I/Y rod knuckles, while FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot and FTC brackets bolt to the same face. Note that a plain cylinder drifts when air is lost - add a rod lock or pilot check valve if the load must stay put. Order ACE63X125 as the current replacement and verify ISO 21287 mounting dimensions.
Replacement checklist
At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa, 2182.1 N push and 2041.3 N pull; theoretical maximum 317.9 kgf at 1.0 MPa. It is a double acting compact cylinder, 63 mm bore, 125 mm stroke, 16 mm rod, 1/8" port, PT body ports, male rod thread, 0.15-1.0 MPa (22-145 psi) working pressure, -20 to +70 C, 30-500 mm/s. The model is discontinued - ACE63X125 is the current replacement.
FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot and FTC brackets attach to the standard face, and the male rod thread accepts I/Y knuckles. Position sensing requires the optional -S magnet code, which allows CMSE or DMSE reed or solid-state switches; this model without the S code has no magnet, so no switch can be mounted. Since ACP is discontinued, confirm the ISO 21287 mounting dimensions of ACE63X125 before ordering.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE63X125B replacement — usually within 7-8 hours.