This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X175-40B, 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 ACPJ12X175-40B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X175-40B is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 175mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X175-40B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke175 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X175-40B
- 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 ACPJ12X175-40B
The ACPJ12X175-40B is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 175 mm stroke by up to 40 mm on site, giving a usable range of 135-175 mm. This 12 mm bore unit is discontinued; the current-production drop-in is the ACEJ12X175, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, since the ACPJ follows the older DIN-standard footprint.
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those rise to 79.2 N and 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. Plan on roughly 34 N of real work at 0.5 MPa, which means it lifts about 2.9 kg vertically with a sensible margin. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and the 175 mm stroke is a made-to-order length - the longest standard stroke for bore 12 is 50 mm. The male rod thread (B code) suits knuckle and tooling attachments, and the M5x0.8 ports take 4 mm tubing common on small automation rigs.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-40B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-40B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X175-40B |
| Bore size | Ø12 mm |
| Stroke | 175 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 ACEJ12X175-40B (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 ACPJ12X175-40B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×175 | Stroke length in mm. |
| -40 | 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 ACPJ12X175-40B Is Used
Micro part ejection from fixtures
A 34 N usable push at 0.5 MPa is enough to strip small plastic housings or stamped clips off a locating mandrel, with the 135-175 mm adjustable range tuned to the fixture depth.
Sample pusher in lab automation
The 12 mm bore and M5x0.8 ports suit compact analysis benches; the male rod thread takes a custom probe carrier, and the stop screw sets the exact presentation position.
Carton flap tuck on small wrappers
At 30-500 mm/s the rod reaches the flap in under a second on a 175 mm move, and the 40 mm window lets the operator trim the stroke when carton sizes change.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-40B with the ACEJ12X175-40B
Size both ways: if 56.5 N at 0.5 MPa is marginal for your jig, step up to the 16 mm bore for 100.5 N; if the load is under about 30 N, a smaller frame may not exist in this family, so keep bore 12 and check the pull force of 42.4 N for retract-dominated moves. The 40 mm window only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. This unit has no magnet (no S code), so no CMSE or DMSE switch can be fitted; order an -S variant if position sensing is needed. Mounting: FA/FB flange or LB foot. Replacement: ACEJ12X175.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X175-40B
- ✓ 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 ACPJ12X175-40B 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, fluid air filtered to 40 um, temperature -20 to +70 C. The 175 mm stroke is non-standard (bore 12 standard max is 50 mm) and made to order.
The -40 code is a 40 mm window: an external stop screw shortens the extend stroke anywhere between 135 and 175 mm. It is a mechanical end stop only - it never holds a load if air is lost. Fixed TPU bumpers sit at both ends. The hard-anodized aluminium body with S45C hard-chrome rod mounts via FA/FB flange or LB foot. This model is discontinued; order the ACEJ12X175 and confirm the ISO 21287 mounting dimensions before the swap.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X175-40B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X175-40B replacement — usually within 7-8 hours.