This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X75-50, 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 ACPJ12X75-50
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X75-50 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 75mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X75-50 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke75 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X75-50
- 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 ACPJ12X75-50
A double acting compact cylinder with an adjustable stroke, the ACPJ12X75-50 uses a 12 mm bore and a 75 mm stroke that an external stop screw trims by up to 50 mm, giving a usable extend range of 25-75 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N at 0.7 MPa with a theoretical maximum of 11.5 kgf at 1.0 MPa. The short ISO 21287 class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit.
The hard-anodized aluminium body carries an S45C hard-chrome rod with a fixed TPU bumper at each end, running at 30-500 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air. Plan on roughly 34 N of real work at 0.5 MPa (about 0.6 of the push rating), which lifts about 2.9 kg vertically with a 2:1 margin. Note the stop screw sets the end position only - on air loss the piston still drifts, so it is not a load-holding brake. This model is discontinued; the current-production drop-in is the ACEJ12X75, and you should confirm ISO 21287 mounting dimensions before swapping since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-50 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-50 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X75-50 |
| Bore size | Ø12 mm |
| Stroke | 75 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 ACEJ12X75-50 (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 ACPJ12X75-50
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -50 | 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 ACPJ12X75-50 Is Used
Ejection stroke trimming on small assembly presses
The 50 mm window lets a technician dial the 75 mm extend stroke down to 25 mm on a benchtop press ejecting plastic bushings, matching throw to part depth without re-plumbing.
Compact fixture clamping in electronics jigs
With 56.5 N push at 0.5 MPa and a body about 50% shorter than an ISO 15552 profile cylinder, it clamps PCB test fixtures inside shallow gantry frames.
Small-part sorting gate on a packaging line
A short-stroke gate pushing blister packs sideways needs only the light 12 mm force class; order the -S version if CMSE / DMSE switches are added later.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-50 with the ACEJ12X75-50
At 12 mm bore this is the lightest force step: 56.5 N push at 0.5 MPa. Step up to the 16 mm bore for 100.5 N or drop to a fixed-stroke ACP if no on-site trimming is needed. The 75 mm stroke exceeds the 50 mm maximum standard stroke for this bore, so it is made to order. No magnet is fitted - order the -S code if you later need CMSE / DMSE switch positions. Female M3x0.5 rod thread, PT ports, FA flange or LB foot mounting. Replacement: ACEJ12X75.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X75-50
- ✓ 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 ACPJ12X75-50 FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa, 79.2 N push and 59.4 N pull. Theoretical maximum is 11.5 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, air filtered to 40 um.
The -50 code is a 50 mm adjustment window: a stop screw shortens the 75 mm extend stroke on site to any length down to 25 mm. It sets end position only and does not hold a load on air loss. The ACPJ family is discontinued; the ACEJ12X75 is the current ISO 21287 drop-in - confirm its mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X75-50
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X75-50 replacement — usually within 7-8 hours.