This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X40-10, 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 ACPJ16X40-10 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 40mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X40-10 (ISO 21287 ACE), in the same bore, stroke and force class.
The ACPJ16X40-10 is a double acting compact cylinder with an adjustable extend stroke, now discontinued in favor of the ACEJ16X40. The -10 code sets a 10 mm adjustment window: an external stop screw trims the 40 mm extend stroke down to 30 mm on site, so one cylinder covers a 30-40 mm range without reordering.
Built on the ISO 21287 short-body format, it saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which matters in tight jigs and guarding. The hard-anodized aluminium body carries an S45C hard-chrome rod, M5x0.8 ports, a fixed TPU bumper at each end and a female M4x0.7 rod thread. Note that the stop screw is a mechanical end stop, not a mid-stroke lock: on air loss the piston still drifts.
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-10 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X40-10 |
| Bore size | Ø16 mm |
| Stroke | 40 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 ACEJ16X40-10 (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. |
| ×40 | 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 practical working force at 0.5 MPa holds a circuit board against locating pins during in-circuit testing, and the short ISO 21287 body fits under a low fixture lid.
With roughly 5 kg of vertical-lift equivalent and a 30-40 mm adjustable extend range, the cylinder parts or diverts lightweight cartons on a benchtop transfer line.
Match FA/FB flange or LB foot mounting to the fixture, and if position sensing is needed, order the -S variant with the optional magnet so CMSE / DMSE switches can be fitted; this version has no magnet. Remember the adjuster shortens the extend stroke only and does not hold a load against air loss. Since this model is discontinued, confirm ISO 21287 mounting dimensions and switch to the current-production ACEJ16X40.
Replacement checklist
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa those rise to 140.7 N and 105.6 N, with a theoretical maximum of 20.5 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, temperature -20 to +70 C, and the port is M5x0.8. The -10 code gives a 10 mm window that trims the 40 mm extend stroke to as little as 30 mm.
The short ISO 21287-style body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with FA/FB flange or LB foot mounting and a female M4x0.7 rod thread. A fixed TPU bumper at each end absorbs end-of-travel impact only; it never locks or holds a load. This model is discontinued: the current direct is the ACEJ16X40 (same bore, stroke and force class), so confirm the ISO 21287 mounting dimensions before swapping.
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X40-10 replacement — usually within 7-8 hours.