This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X70-10, 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 ACPJ16X70-10 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 70mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X70-10 (ISO 21287 ACE), in the same bore, stroke and force class.
The ACPJ16X70-10 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 70 mm stroke by up to 10 mm on site, giving a usable 60-70 mm range. Air works on both faces of the 16 mm piston, so it pushes 100.5 N and pulls 75.4 N at 0.5 MPa (rising to 140.7 N at 0.7 MPa). The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits shallow jigs and guard rails that a full-length cylinder cannot. Note this model is discontinued; ACEJ16X70 is the current-production successor.
The hard-anodized aluminium body carries an S45C hard-chrome rod with a female M4x0.7 thread, M5x0.8 ports, and fixed TPU bumpers at both ends. There is no magnet fitted to this version - the optional -S code adds one so CMSE / DMSE switches can be used. Speed range is 30-500 mm/s.
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-10 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X70-10 |
| Bore size | Ø16 mm |
| Stroke | 70 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 75 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ16X70-10 (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 | 75 N |
| 0.7 MPa | 106 N |
| Max (@1.0 MPa) | 15 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). |
|---|---|
| 16 | Bore size in mm. |
| ×70 | 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).
About 60 N of usable clamping force holds small PCB assemblies or connector housings during a screw-driving or test cycle; the compact body fits inside a shallow fixture plate.
Order the -S magnet version to pair CMSE or DMSE switches with a 70 mm stroke moving a lightweight inspection cover or sensor arm at 30-500 mm/s.
Remember the stop screw only shortens the extend stroke within the 10 mm window - it is not a mid-stroke lock, so the rod still drifts if air is lost. Mounting uses the FA/FB flange or LB foot on the ISO 21287 face. If you need position sensing, order the -S variant for the optional magnet. Since ACPJ is discontinued, spec ACEJ16X70 as the direct and confirm the ISO 21287 mounting dimensions before swapping.
Replacement checklist
It is double acting with a 16 mm bore, 70 mm stroke adjustable by 10 mm, M5x0.8 ports, 8 mm rod with female M4x0.7 thread, operating pressure 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and fixed TPU bumpers at both ends.
The compact ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it bolts into tight jigs and gantries. The ACPJ16X70-10 itself is discontinued: swap to ACEJ16X70, the current-production successor in the same bore, stroke and force class, and confirm the ISO 21287 mounting dimensions before the changeover.
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X70-10 replacement — usually within 7-8 hours.