This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ20X175-10S, 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 ACPJ20X175-10S is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 175mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X175-10S (ISO 21287 ACE), in the same bore, stroke and force class.
The ACPJ20X175-10S is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 175 mm stroke by up to 10 mm on site, giving a usable 165-175 mm range. The 175 mm stroke exceeds the 100 mm maximum standard stroke for the 20 mm bore, so this unit is made to order.
Its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into narrow pick-and-place gantries and guarded test stations. The hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers at both ends, and the -S magnet code is fitted, so CMSE / DMSE reed or solid-state switches can be mounted for end-of-stroke signalling. Note: this ACPJ model is discontinued; the current-production direct is the ACEJ20X175 - confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X175-10S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X175-10S |
| Bore size | Ø20 mm |
| Stroke | 175 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 ACEJ20X175-10S (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. |
| ×175 | Stroke length in mm. |
| -10 | 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 -S magnet fitted, CMSE or DMSE switches confirm extend and retract on a 165-175 mm feed move, running at 30-500 mm/s between fixed TPU bumpers.
About 94 N of usable force at 0.5 MPa suits light pressing of vials or coupons inside a guarded bench frame where the short body saves roughly half the length of an ISO 15552 profile cylinder.
Size around the 94 N usable figure at 0.5 MPa and remember the stop screw only shortens the extend stroke within the 10 mm window - it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. FA/FB flanges and LB feet bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches. For new builds, order the ACEJ20X175 instead - this ACPJ is discontinued.
Replacement checklist
Push is 157.1 N and pull 117.8 N at 0.5 MPa; at 0.7 MPa push rises to 219.9 N and pull to 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa. It is double acting, runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-500 mm/s, port M5x0.8, female M6x1.0 rod thread, and a 10 mm extend-stroke adjustment window (165-175 mm usable).
The 20 mm bore tops out at 100 mm as a standard stroke, so 175 mm is a non-standard, made-to-order build - expect a longer lead time. Also note this ACPJ model is discontinued; the current-production replacement is the ACEJ20X175 in the same bore, stroke and force class, so confirm the ISO 21287 mounting dimensions before ordering either version.
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X175-10S replacement — usually within 7-8 hours.