This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X75-30, 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 ACPJ12X75-30
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X75-30 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 ACEJ12X75-30 (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 → ACEJ12X75-30
- 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 ACPJ12X75-30
The ACPJ12X75-30 is a double acting compact cylinder with an adjustable stroke: a stop screw trims the 75 mm extend stroke by up to 30 mm, giving a usable range of 45-75 mm. In the 12 mm bore class it delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N / 59.4 N at 0.7 MPa, 11.5 kgf theoretical max). The 75 mm stroke is longer than the 50 mm standard limit for bore 12, so it is a made-to-order build.
Its short ISO 21287-style body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures and guarding. A practical sizing rule: plan on roughly 34 N (about 3.4 kg of force) of real work at 0.5 MPa, and expect it to lift about 2.8 kg vertically with a 2:1 margin. Note this model is discontinued - the current drop-in is the ACEJ12X75; confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-30 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-30 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X75-30 |
| 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 ACEJ12X75-30 (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 ACPJ12X75-30
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -30 | 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 ACPJ12X75-30 Is Used
Small-part ejection on assembly benches
Trims the extend stroke between 45 and 75 mm to nudge finished 3D-printed or machined micro-parts off a nest, using the 56.5 N push at 0.5 MPa.
Compact gate latch on lab automation
The short body fits behind machine guarding where a full-length profile cylinder will not; add the -S magnet code if CMSE / DMSE position switches are needed later.
Light hold-down of PCB fixtures
About 34 N of usable clamping force at 0.5 MPa secures small circuit boards during a test or marking step, with the TPU bumper softening both ends.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-30 with the ACEJ12X75-30
For light clamping and positioning, compare the 16 mm bore (100.5 N push at 0.5 MPa) if 56.5 N is marginal, or step down from a 16 mm build where 56.5 N suffices. The adjuster is a mechanical end stop for the extend stroke only - it does not hold a load if air is lost. Rod end is female M3x0.5; FA/FB flange and LB foot mountings fit the standard face. This model has no magnet (the -S code adds one for CMSE / DMSE switches). Discontinued: order the ACEJ12X75 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X75-30
- ✓ 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 ACPJ12X75-30 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 max 11.5 kgf at 1.0 MPa. It is double acting, bore 12 mm, stroke 75 mm with a 30 mm adjustment window (45-75 mm usable), rod 6 mm with female M3x0.5 thread, M5x0.8 port, speed 30-500 mm/s, operating pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi). The 75 mm stroke is non-standard for this bore and made to order.
An external stop screw shortens the extend stroke anywhere within the ordered 30 mm window - it cannot extend past 75 mm, and it is not a mid-stroke lock, so the rod still drifts on air loss. The ACPJ family is discontinued; the current-production drop-in is the ACEJ12X75 in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP follows the DIN standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X75-30
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X75-30 replacement — usually within 7-8 hours.