This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X25-10, 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.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X25-10 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 25mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X25-10 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X25-10
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10
A double acting compact cylinder with an adjustable extend stroke, the ACPJ12X25-10 uses a 12 mm bore and a 25 mm base stroke that a stop screw trims by up to 10 mm, giving a usable range of 15-25 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N at 0.7 MPa. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into cramped jigs and guarding where a full-length body will not fit. Note this model is discontinued; the current-production replacement is the ACEJ12X25.
For sizing, plan on roughly 34 N (about 3.5 kg) of real work at 0.5 MPa rather than the full 56.5 N rating, which corresponds to lifting about 2.9 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries an S45C hard-chrome rod with a female M3x0.5 thread, M5x0.8 ports, fixed TPU bumpers at both ends and a speed range of 30-500 mm/s. No magnet is fitted on this version; order the -S code if you later need CMSE / DMSE switch sensing. Confirm ISO 21287 mounting dimensions before swapping to the ACEJ12X25.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X25-10 |
| Bore size | Ø12 mm |
| Stroke | 25 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| 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 50 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ12X25-10 (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.
Theoretical Output Force (Ø12mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 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).
Model Code: Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×25 | 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).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10 Is Used
Micro jig clamping
The 15-25 mm trimmed stroke and 34 N usable push at 0.5 MPa suit small fixture clamps on electronics assembly benches where space is tight.
Small-part ejection
With the optional -S magnet and a CMSE switch, the cylinder flags end-of-stroke when pushing tiny components off a pick station.
Lab gate actuation
The 12 mm bore lifts about 2.9 kg vertically with margin, enough to raise lightweight gates or shields on test rigs.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10 with the ACEJ12X25-10
At 56.5 N push at 0.5 MPa this 12 mm bore suits light clamping and positioning; step up to the 16 mm bore (100.5 N) for roughly double the force, or down to a smaller fixed-stroke ACP if no stroke trimming is needed. The adjuster is a mechanical end stop for the extend stroke only - on air loss the piston still drifts, so it is not a load-holding lock. FA/FB flange and LB foot mountings bolt to the ISO 21287 face, and the optional -S magnet enables CMSE / DMSE switches. For new projects specify the ACEJ12X25, the current drop-in in the same bore, stroke and force class.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X25-10
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10 FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push is 79.2 N and pull 59.4 N. Theoretical maximum is 11.5 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, air filtered to 40 um, temperature -20 to +70 C. Plan on about 34 N (3.5 kg) of real work at 0.5 MPa.
The -10 code sets a 10 mm window: a stop screw shortens the 25 mm extend stroke to any value from 15 to 25 mm; it cannot lengthen the stroke. Fixed TPU bumpers decelerate at both ends. This model is discontinued - the ACEJ12X25 (ISO 21287) is the current drop-in with the same bore, stroke and force class; confirm its mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X25-10
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X25-10 replacement — usually within 7-8 hours.