This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X80-50B, 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 ACPJ12X80-50B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X80-50B is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 80mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X80-50B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke80 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X80-50B
- 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 ACPJ12X80-50B
Double acting compact cylinder with an adjustable extend stroke, the ACPJ12X80-50B uses a 12 mm bore and an 80 mm stroke that a stop screw trims by up to 50 mm, giving a usable range of 30-80 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N at 0.7 MPa. The 80 mm stroke exceeds the 50 mm maximum standard stroke for this bore, so it is a made-to-order build. Note: this model is discontinued; the current-production replacement is the ACEJ12X80.
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. A fixed TPU bumper sits at both ends, and the male (B code) rod thread carries an M3x0.5 external thread on the 6 mm rod. As a rule of thumb, plan on roughly 34 N of real work at 0.5 MPa, which lifts about 1.7 kg vertically with a 2:1 margin. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, fluid filtered to 40 um.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-50B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-50B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X80-50B |
| Bore size | Ø12 mm |
| Stroke | 80 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 ACEJ12X80-50B (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 ACPJ12X80-50B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×80 | 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 ACPJ12X80-50B Is Used
Small-part ejection from a jig
Trims the extend stroke between 30 and 80 mm to eject finished nylon fittings off a locating pin on an assembly fixture, with the 56.5 N push at 0.5 MPa clearing light plastic parts.
Bench-top press with stop tuning
The 50 mm adjustment window lets a technician dial the stop screw per product changeover on a small electronics crimping bench, running 0.7 MPa for 79.2 N on stiffer terminals.
Clamp on a compact vision station
The short body, about 50% shorter than an ISO 15552 profile cylinder, fits under a camera gantry to clamp PCB carriers, with the male M3x0.5 rod thread taking a knuckle bracket.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-50B with the ACEJ12X80-50B
At 12 mm bore this is the lightest force step: 56.5 N push at 0.5 MPa versus 100.5 N for the 16 mm bore and 157.1 N for the 20 mm bore, so step up if your part weight exceeds about 1.7 kg of vertical lift. The adjuster is a mechanical end stop for the extend stroke only - on air loss the piston still drifts, so do not use it to hold a load. FA/FB flange and LB foot mountings bolt to the ISO 21287 face; the optional -S magnet enables CMSE / DMSE switches, but this model has no magnet fitted. Since the ACPJ is discontinued, order the ACEJ12X80 and confirm ISO 21287 mounting dimensions before swapping.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X80-50B
- ✓ 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 ACPJ12X80-50B FAQ
Push 56.5 N and pull 42.4 N at 0.5 MPa; push 79.2 N and pull 59.4 N at 0.7 MPa; theoretical maximum 11.5 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, air filtered to 40 um. The 80 mm stroke is made to order because the bore 12 standard maximum is 50 mm.
The -50 code is a 50 mm window: an external stop screw shortens the 80 mm extend stroke by up to 50 mm, so you can run anywhere from 30 to 80 mm. It is an end stop, not a mid-stroke lock. The ACPJ family is discontinued; the current drop-in is the ACEJ12X80 in the same bore, stroke and force class - confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X80-50B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X80-50B replacement — usually within 7-8 hours.