This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X75-40, 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 ACPJ12X75-40
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X75-40 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 ACEJ12X75-40 (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 → ACEJ12X75-40
- 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 ACPJ12X75-40
The ACPJ12X75-40 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 75 mm stroke by up to 40 mm, giving a usable range of 35-75 mm. This 12 mm bore size delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N / 59.4 N at 0.7 MPa), and its 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.
The 75 mm stroke is beyond the 50 mm standard maximum for bore 12, so this unit is made to order. A fixed TPU bumper at each end decelerates the piston, the hard-anodized aluminium body carries an S45C hard-chrome rod, and the rod end is female M3x0.5 with M5x0.8 ports. Note the adjuster is a mechanical end stop only - on air loss the piston still drifts, so it never holds a load. This model is discontinued; the current-production drop-in is the ACEJ12X75, and you should confirm ISO 21287 mounting dimensions before swapping. As a sizing rule, plan on roughly 34 N (about 0.6 of the push force) of real work at 0.5 MPa, which lifts about 2.9 kg vertically with a 2:1 margin.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-40 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-40 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X75-40 |
| 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 ACEJ12X75-40 (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 ACPJ12X75-40
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×75 | 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 ACPJ12X75-40 Is Used
Micro part ejection
Ejects small stamped terminals or connector pins from a compact die station, where the 35-75 mm adjustable range handles different strip pitches and the 56.5 N push is ample for light parts.
Lab sample indexing
Advances sample vials or slides into a test position on an analytical benchtop unit; the short body fits inside the instrument housing and the stop screw dials in the exact index distance.
Carton flap tuck
Tucks small flap corners on cosmetic or pharmaceutical cartons at a semi-auto bench, with the 40 mm trim window adapting the stroke to different carton heights.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-40 with the ACEJ12X75-40
At 12 mm bore this is the smallest force class in the family: 56.5 N push at 0.5 MPa versus 100.5 N for bore 16 and 157.1 N for bore 20. Choose it for light clamping and positioning under about 34 N of working load; step up to the 16 mm bore if your part weight or friction load approaches that ceiling. The 40 mm window suits stations where one cylinder must serve several product lengths. If you need position feedback, order the -S variant with the optional magnet so CMSE / DMSE switches can be fitted - this code has no magnet. For new designs, specify the ACEJ12X75 instead, and verify the ISO 21287 mounting footprint against your fixture.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X75-40
- ✓ 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 ACPJ12X75-40 FAQ
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. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, air filtered to 40 um. The extend stroke is adjustable from 35-75 mm via the 40 mm stop window, the port is M5x0.8, the rod thread is female M3x0.5, and both ends carry a fixed TPU bumper.
No - the ACPJ family is discontinued. The current-production replacement is the ACEJ12X75 (swap the P for an E), which matches the same 12 mm bore, 75 mm stroke and force class in the ISO 21287 short-body format. Because the ACP was built to a DIN standard, confirm the ISO 21287 mounting dimensions against your fixture before ordering the swap. Also note this exact code has no magnet; only the -S variant accepts CMSE / DMSE switches.
Related AirTAC ACE Cylinders
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