This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X25-10B, 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 ACPJ12X25-10B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X25-10B 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 ACEJ12X25-10B (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 → ACEJ12X25-10B
- 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 ACPJ12X25-10B
The ACPJ12X25-10B is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 25 mm stroke by up to 10 mm, giving a usable range of 15-25 mm on site. This 12 mm bore size delivers 56.5 N push and 42.4 N pull at 0.5 MPa, rising to 79.2 N push at 0.7 MPa, with a theoretical peak of 11.5 kgf at 1.0 MPa. The hard-anodized aluminium body with an S45C hard-chrome rod keeps the short ISO 21287-class footprint, saving roughly 50% of the mounting length of an ISO 15552 profile cylinder in tight jigs and guards.
Practical sizing: plan on about 34 N of real work at 0.5 MPa rather than the full rating, which corresponds to lifting roughly 1.7 kg vertically with a 2:1 margin. The B code gives a male 6 mm rod with an M3x0.5 external thread, and the M5x0.8 ports suit small air lines. Note this model is discontinued; the current-production drop-in is the ACEJ12X25, so confirm ISO 21287 mounting dimensions before swapping from the DIN-standard ACP body.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X25-10B |
| 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 ACEJ12X25-10B (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 ACPJ12X25-10B
| 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 ACPJ12X25-10B Is Used
Micro jig clamping
Trims between 15 and 25 mm to clamp small PCB fixtures or watch-part jigs with about 34 N of usable force at 0.5 MPa.
Compact ejection slide
The short body fits inside a dial-table guard where an ISO 15552 profile cylinder would overhang by half its length.
Lab sample pusher
Male M3x0.5 rod thread drives a small pusher plate to index 1-2 kg sample trays in test benches at 30-500 mm/s.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10B with the ACEJ12X25-10B
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 push at 0.5 MPa) for roughly 78% more force, or drop to a smaller actuator if 42.4 N pull is already generous. The -10 window only shortens the extend stroke and acts as an end stop, not a mid-stroke lock, so the piston 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; this unit has no S code, so no sensor can be fitted. Order the ACEJ12X25 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X25-10B
- ✓ 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 ACPJ12X25-10B FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa it pushes 79.2 N and pulls 59.4 N; theoretical maximum is 11.5 kgf at 1.0 MPa. In practice budget about 34 N of work, which lifts roughly 1.7 kg vertically with a 2:1 margin. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the extend stroke is adjustable from 15 to 25 mm via the 10 mm stop window.
It is a short ISO 21287-class compact cylinder with a hard-anodized aluminium body, threaded aluminium covers, a fixed TPU bumper at each end and an S45C hard-chrome rod; the body saves about 50% of the mounting length of an ISO 15552 profile cylinder. Switches need the optional -S magnet code with CMSE / DMSE sensors; without -S there is no magnet. This model is discontinued, so order the ACEJ12X25 replacement and confirm ISO 21287 mounting dimensions first.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X25-10B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X25-10B replacement — usually within 7-8 hours.