This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X120-75, 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 ACPJ12X120-75
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X120-75 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 120mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X120-75 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X120-75
- 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 ACPJ12X120-75
This discontinued AirTAC model is a double acting compact cylinder with an adjustable extend stroke. The -75 code sets a 75 mm trim window, so the stop screw shortens the 120 mm stroke anywhere in a 45-120 mm range on site. At 0.5 MPa the 12 mm bore delivers 56.5 N push and 42.4 N pull, rising to 79.2 N push at 0.7 MPa. Because the 120 mm stroke exceeds the 50 mm standard maximum for this bore, it is a made-to-order build. Note the 120 mm stroke exceeds the 50 mm standard limit for bore 12, so this unit is made to order.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits slim fixtures and guarded assemblies. As a working rule, budget about 34 N (0.6 of the push force) for real work at 0.5 MPa, which lifts roughly 2.9 kg vertically with a 2:1 margin. The rod carries a female M3x0.5 thread and ports are M5x0.8. No magnet is fitted, so position switches cannot be used; order the -S variant if sensing is needed. Production has ended - the current drop-in is ACEJ12X120, and buyers should confirm ISO 21287 mounting dimensions before swapping, since the ACP series follows the older DIN-standard footprint.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-75 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-75 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X120-75 |
| Bore size | Ø12 mm |
| Stroke | 120 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 ACEJ12X120-75 (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 ACPJ12X120-75
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -75 | 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 ACPJ12X120-75 Is Used
Small-part ejection from plastic molds
The 56.5 N push at 0.5 MPa nudges finished caps or clips off a mold face, and the stop screw trims the extend stroke to the exact ejection depth needed.
Presence check in electronics assembly
A 45-120 mm adjustable reach probes PCB trays and connector seats in tight test rigs where a full-length profile cylinder will not fit.
Light hold-down on packaging lines
About 34 N of usable force at 0.5 MPa secures pouches or cartons under a guide during labeling, with the TPU bumpers softening each end of travel.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-75 with the ACEJ12X120-75
At 56.5 N push (0.5 MPa) this bore 12 unit handles light clamping and part present checks; step up to bore 16 for 100.5 N or bore 20 for 157.1 N at the same pressure. The 75 mm window trims the extend stroke from 120 mm down to 45 mm via the external stop, but the stop is not a mid-stroke lock - on air loss the piston still drifts, so do not rely on it to hold a load. FA/FB flange or LB foot mounts bolt to the standard face, and the female M3x0.5 rod thread accepts I/Y knuckles. Since this model is discontinued, specify ACEJ12X120 as the current replacement and verify the ISO 21287 mounting dimensions before ordering.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X120-75
- ✓ 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 ACPJ12X120-75 FAQ
Push is 56.5 N and pull is 42.4 N at 0.5 MPa; at 0.7 MPa push rises to 79.2 N and pull to 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, and the port is M5x0.8. The 120 mm stroke is a made-to-order length because the bore 12 standard maximum is 50 mm, and the -75 window lets the stop screw trim the extend stroke anywhere from 45 to 120 mm.
Not on this unit - no magnet is fitted, so CMSE or DMSE switches cannot be read; the magnet comes only with the optional -S code. The ACPJ family is discontinued, and the current-production drop-in is ACEJ12X120 in the same bore, stroke and force class. Before swapping, confirm the ISO 21287 mounting dimensions, since this older series follows a DIN-standard body rather than the current profile.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X120-75
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X120-75 replacement — usually within 7-8 hours.