This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ20X110-75, 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 ACPJ Adjustable Compact Cylinder ACPJ20X110-75 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 110mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X110-75 (ISO 21287 ACE), in the same bore, stroke and force class.
The ACPJ20X110-75 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 110 mm stroke by up to 75 mm, giving a usable range of 35-110 mm. It is discontinued; the current-production replacement is the ACEJ20X110, which matches the same bore, stroke and force class. At 0.5 MPa this 20 mm bore pushes 157.1 N, and the short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and gantries.
The 110 mm stroke exceeds the 100 mm maximum standard stroke for bore 20, so this unit is made to order. The body is hard-anodized aluminium with an S45C hard-chrome rod, fixed TPU bumpers at both ends, and speeds of 30-500 mm/s. No magnet is fitted, so position switches cannot be mounted unless you order the -S version.
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X110-75 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X110-75 |
| Bore size | Ø20 mm |
| Stroke | 110 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| 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 ACEJ20X110-75 (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 |
ACPJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×110 | Stroke length in mm. |
| -75 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| 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 the optional -S magnet and CMSE / DMSE switches, a QC test bench confirms full 110 mm extension of a probe before cycling starts.
Remember the stop screw only shortens the extend stroke - it is not a mid-stroke lock, so the rod still drifts if air is lost. FA/FB flange and LB foot mountings bolt to the standard face, and the optional -S magnet enables CMSE / DMSE switches. Order the ACEJ20X110 as the current direct and confirm ISO 21287 mounting dimensions before swapping.
Replacement checklist
Theoretical maximum is 32 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, port M5x0.8, female rod thread M6x1.0.
An external stop screw shortens the extend stroke anywhere within the ordered 75 mm window, so the rod can be set to stop between 35 mm and the full 110 mm. Fixed TPU bumpers decelerate at both ends. The ACPJ is discontinued; the ACEJ20X110 is the current ISO 21287 direct - confirm mounting dimensions before swapping.
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X110-75 replacement — usually within 7-8 hours.