This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X80-20B, 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 ACPJ12X80-20B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X80-20B 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 ACEJ12X80-20B (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 → ACEJ12X80-20B
- 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 ACPJ12X80-20B
The ACPJ12X80-20B is a double acting adjustable-stroke compact cylinder with a 12 mm bore and an 80 mm stroke, trimmed by a 20 mm external stop screw so the extend stroke can be set anywhere from 60 to 80 mm on site. Push force is 56.5 N and pull 42.4 N at 0.5 MPa, rising to 79.2 N at 0.7 MPa, with a theoretical peak of 11.5 kgf. The male rod thread (B code) carries a 6 mm rod, and the M5x0.8 ports suit the small-bore air circuit.
The hard-anodized aluminium body keeps the mounting length about 50% shorter than an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit. Plan on roughly 34 N of usable push at 0.5 MPa, which lifts about 2.9 kg vertically with a 2:1 margin. Note the 80 mm stroke exceeds the 50 mm standard maximum for bore 12, so it is made to order. This model is discontinued; the current drop-in is the ISO 21287 ACEJ12X80 - confirm mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-20B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-20B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X80-20B |
| 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 ACEJ12X80-20B (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 ACPJ12X80-20B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -20 | 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 ACPJ12X80-20B Is Used
Fixture clamping on small CNC jigs
The 60-80 mm adjustable extend stroke lets a machinist dial in clamp travel per fixture, with 56.5 N push holding light aluminium parts during drilling.
Compact pick-and-place gantry
A short body that saves about 50% of the length of an ISO 15552 profile cylinder fits between gantry rails, lifting about 2.9 kg vertically with margin.
Lab dosing and test stations
The male 6 mm rod thread and M5x0.8 ports suit small dispensing heads, with 30-500 mm/s speed covering gentle to brisk test cycles.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-20B with the ACEJ12X80-20B
Size up if 56.5 N at 0.5 MPa is marginal: the 16 mm bore delivers 100.5 N push and the 20 mm bore 157.1 N in the same compact family. The stop screw only shortens the extend stroke and does not lock the rod - on air loss the piston drifts, so add a separate clamp if you need position holding. FA/FB flange and LB foot mountings bolt to the standard face, and the optional -S magnet enables CMSE / DMSE switches (this B-coded model has no magnet fitted). For new builds, order the ACEJ12X80 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X80-20B
- ✓ 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 ACPJ12X80-20B 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, fluid air filtered to 40 um. The 80 mm stroke is non-standard for bore 12 (standard max 50 mm) and is made to order.
A stop screw shortens the 80 mm extend stroke by up to 20 mm, giving a usable 60-80 mm range; the fixed TPU bumpers decelerate at both ends. This ACPJ model is discontinued - the current-production replacement is the ACEJ12X80 (ISO 21287), which matches the bore, stroke and force class. Confirm ISO 21287 mounting dimensions before swapping, since the ACP follows the DIN-standard footprint.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X80-20B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X80-20B replacement — usually within 7-8 hours.