This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X25-10S, 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.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X25-10S 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 ACEJ12X25-10S (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 → ACEJ12X25-10S
- 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 ACPJ12X25-10S
This discontinued AirTAC compact cylinder is double acting with an adjustable extend stroke: a stop screw trims the 25 mm stroke by up to 10 mm, giving a usable 15-25 mm range set on site. The 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa, rising to 79.2 N at 0.7 MPa, with a theoretical peak of 11.5 kgf at 1.0 MPa. The -S code means the optional magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped to the hard-anodized aluminium body.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and guarding where a full-length body will not fit. A fixed TPU bumper sits at both ends and simply decelerates the piston; it never locks or brakes a load, and on air loss the piston drifts. For sizing, plan on about 34 N of real work at 0.5 MPa (roughly 0.6 of the push rating), which lifts about 2 kg vertically with a 2:1 margin. This model is discontinued; the current-production replacement is ACEJ12X25, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X25-10S |
| 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 ACEJ12X25-10S (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.
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 ACPJ12X25-10S
| 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 ACPJ12X25-10S Is Used
Micro part ejection from fixtures
The 15-25 mm trimmed stroke and 56.5 N push at 0.5 MPa eject small machined or molded parts off a locating pin without disturbing the next piece.
Position-flagged test stations
Because the -S magnet is fitted, a CMSE or DMSE switch on the body confirms the trimmed extend position on a lab press or go/no-go gauge.
Light clamp on PCB test rigs
About 34 N of usable clamp force at 0.5 MPa holds a circuit board flat against a fixture bed inside a compact test head.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-10S with the ACEJ12X25-10S
At 12 mm bore this is the smallest force class in the family: 56.5 N push at 0.5 MPa. Step up to the 16 mm bore for 100.5 N push at the same pressure, or drop to a direct ACEJ12X25 if you only need the fixed stroke. The female M3x0.5 rod thread takes standard I/Y knuckles, and FA flange or LB foot mounts bolt to the ISO 21287 face. The stop screw is an end stop only, not a mid-stroke lock, so do not rely on it to hold a load. Order the ACEJ12X25 as the current drop-in and verify mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X25-10S
- ✓ 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 ACPJ12X25-10S 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, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The -10 code is a 10 mm adjustment window: an external stop screw shortens the 25 mm extend stroke to any length from 15 to 25 mm. It is an end stop only and does not hold a load on air loss.
No, the ACPJ family is discontinued. The current-production drop-in is ACEJ12X25, which swaps the P for an E and matches the same 12 mm bore, 25 mm stroke and force class on the ISO 21287 short body. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP was built to a DIN-standard footprint. The M5x0.8 port, 30-500 mm/s speed range and 0.15-1.0 MPa (22-145 psi) operating pressure carry over.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X25-10S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X25-10S replacement — usually within 7-8 hours.