This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X20-10S, 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 ACPJ12X20-10S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X20-10S is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 20mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X20-10S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X20-10S
- 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 ACPJ12X20-10S
This compact cylinder is double acting, so air both extends and retracts the 6 mm rod. The -10 code gives a 10 mm adjustment window: a stop screw trims the 20 mm extend stroke down on site, giving a usable range of 10-20 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 short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit.
Note this model is discontinued; the current-production replacement is ACEJ12X20, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, since the ACP was built to a DIN standard. The bore 12 body carries M5x0.8 ports, a female M3x0.5 rod thread, a fixed TPU bumper at each end and a hard-anodized aluminium body with an S45C hard-chrome rod. Because the -S magnet is fitted, CMSE or DMSE reed and solid-state switches can be mounted directly. For sizing, plan on about 34 N of real work at 0.5 MPa (roughly 60% of the rated push), which lifts about 2.9 kg vertically with a 2:1 margin.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-10S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-10S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X20-10S |
| Bore size | Ø12 mm |
| Stroke | 20 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 ACEJ12X20-10S (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 ACPJ12X20-10S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| -10 | 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 ACPJ12X20-10S Is Used
Reject gate on a packaging line
The 10-20 mm trimmed stroke flicks small cartons off a conveyor, and the fitted magnet with a DMSE switch confirms the gate reached the end position each cycle.
Sample pusher in a lab analyzer
About 34 N of usable force at 0.5 MPa slides cuvettes or microplates a short, repeatable distance inside a compact instrument housing.
Light clamp in an electronics fixture
The 2.9 kg vertical-lift equivalent holds PCBs or connector blocks during a solder or test step, with the stop screw set to the exact clamping position.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-10S with the ACEJ12X20-10S
Bore 12 is the smallest step in the family: 56.5 N push at 0.5 MPa. If your load needs more, bore 16 delivers 100.5 N at the same pressure; if 56.5 N is generous for a light gate or sensor fixture, bore 12 keeps the envelope minimal. The stop screw only shortens the extend stroke and is not a mid-stroke lock - on air loss the piston still drifts, so add a separate valve or clamp if you must hold position. FA/FB flange and LB foot mountings bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches. Order ACEJ12X20 as the current drop-in replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X20-10S
- ✓ 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 ACPJ12X20-10S FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push is 79.2 N and pull 59.4 N. Theoretical maximum is 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, and the extend stroke is adjustable between 10 and 20 mm via the stop screw.
The -10 code sets a 10 mm window: an external stop screw shortens the 20 mm extend stroke by up to 10 mm, so the working range is 10-20 mm. The fixed TPU bumpers at each end simply decelerate the piston at the ends. This unit carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches can be clamped to the body for end-position detection. The model is discontinued - ACEJ12X20 is the current ISO 21287 replacement.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X20-10S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X20-10S replacement — usually within 7-8 hours.