This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE100X40S, 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 ACP100X40S is a double acting DIN-standard tight/compact air cylinder with a Ø100mm bore and 40mm stroke, 1/4" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE100X40S (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting and built to the DIN-standard compact format, the ACP100X40S moves its 25 mm hard-chromed rod with air in both directions and carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be mounted for end-of-stroke signalling. At the largest bore in the family it delivers 3927 N push and 3681.6 N pull at 0.5 MPa, rising to 5497.8 N push at 0.7 MPa, with a fixed TPU bumper at each end and a 1/4" port. Its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits so well into press fixtures and heavy clamping bridges where length is scarce.
For real-world sizing, plan on about 2356 N of usable push at 0.5 MPa rather than the full 3927 N rating - roughly a 240 kg horizontal working force. Note this model is discontinued: the current-production direct is ACE100X40, same bore, stroke and force class, so confirm the ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACP Compact Cylinder ACP100X40S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE100X40S |
| Bore size | Ø100 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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 300 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACE100X40S (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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | 5154 N |
| Max (@1.0 MPa) | 801 kgf | |
The ACE100X40S 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). |
|---|---|
| 100 | 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).
The 3927 N push at 0.5 MPa clamps steel weldments in machining fixtures, and the short body fits inside the fixture base where a full-length profile cylinder would not.
A 40 mm stroke is enough to swing or lock forming-station gates on press lines, with the -S magnet feeding CMSE switch signals to the PLC for position confirmation.
At 100 mm bore this is the top of the range: 3927 N push at 0.5 MPa where an 80 mm bore gives 2513.3 N and there is no larger standard option, so step down to 80 mm if your load allows or stay at 100 mm for heavy clamping. The 40 mm stroke sits well inside the 300 mm maximum standard stroke for this bore, so no made-to-order length is needed. This unit already carries the optional -S magnet for CMSE / DMSE switches, and FA/FB flange, LB foot or CA/CB clevis mounting bolts straight to the ISO 21287 face. Remember the piston drifts when air is lost - add a rod lock or pilot check valve if the load must stay put. Order ACE100X40 as the current replacement.
Replacement checklist
At 0.5 MPa it pushes with 3927 N and pulls with 3681.6 N; at 0.7 MPa push rises to 5497.8 N. The theoretical maximum at 1.0 MPa is 800.9 kgf. Operating range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, fluid air filtered to 40 um.
Order ACE100X40, the current-production ISO 21287 successor: swap the P for an E and you get the same 100 mm bore, 40 mm stroke and force class in a matching short body. Confirm the ISO 21287 mounting dimensions against your fixture before swapping, since the ACP followed the DIN-standard layout. The -S magnet on this model carries over as an option on the ACE, and the fixed TPU bumper at both ends behaves the same way.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE100X40S replacement — usually within 7-8 hours.