This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X80-20S, 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 ACPJ12X80-20S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X80-20S 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 ACEJ12X80-20S (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 → ACEJ12X80-20S
- 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 ACPJ12X80-20S
The ACPJ12X80-20S is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 80 mm stroke by up to 20 mm on site, giving a usable 60-80 mm range. Air works on both faces of the 12 mm piston, so at 0.5 MPa it pushes with 56.5 N and pulls with 42.4 N, rising to 79.2 N on the extend stroke 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.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into slim fixtures and guard panels. In practice, plan for about 34 N of real work at 0.5 MPa, which lifts roughly 2.8 kg vertically with a 2:1 margin. This model carries the optional -S magnet, so CMSE or DMSE switches can be fitted for end-of-stroke sensing. Note that the ACPJ family is discontinued; the current drop-in is the ACEJ12X80, and buyers should confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-20S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-20S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X80-20S |
| 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 ACEJ12X80-20S (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 ACPJ12X80-20S
| 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 ACPJ12X80-20S Is Used
Position-verified micro dosing
A 56.5 N push at 0.5 MPa seats small vials or sensor caps in lab filling heads, while the fitted magnet and a CMSE switch confirm the trimmed 60-80 mm extend position at each cycle.
Compact ejection in slim tooling
The short body, about 50% shorter in mounting length than an ISO 15552 profile cylinder, ejects finished pins from a narrow punch die where a full-length body cannot fit.
Light clamp on a test bench
About 34 N of usable force at 0.5 MPa holds small PCB assemblies or optical parts against a fixture stop during a 30-second verification cycle, with the 20 mm window tuned per part.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-20S with the ACEJ12X80-20S
At 12 mm bore this is the smallest force class in the range: 56.5 N push and 42.4 N pull at 0.5 MPa. Step up to the 16 mm bore for 100.5 N push, or to 20 mm for 157.1 N, if the load needs more headroom. The stop screw shortens the extend stroke only within the 20 mm window and is not a mid-stroke lock, so on air loss the piston can still drift. FA/FB flange and LB foot mountings bolt to the standard face, and this unit's -S magnet accepts CMSE / DMSE switches. For new designs, order the ACEJ12X80, the current-production replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X80-20S
- ✓ 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 ACPJ12X80-20S FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push rises to 79.2 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window, so the 80 mm extend stroke can be trimmed anywhere in a 60-80 mm range with the stop screw. The 80 mm stroke is a made-to-order length because the bore 12 standard maximum is 50 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
Yes. This unit carries the -S magnet option, so CMSE reed or DMSE solid-state switches mount directly on the body for end-of-stroke signalling. The ACPJ family is discontinued; the current-production replacement is the ACEJ12X80, an ISO 21287 compact cylinder in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions against your fixture before swapping, since the ACP is DIN-standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X80-20S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X80-20S replacement — usually within 7-8 hours.