This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X90-20S, 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 ACPJ12X90-20S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X90-20S is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 90mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X90-20S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke90 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X90-20S
- 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 ACPJ12X90-20S
A double acting compact cylinder with an adjustable extend stroke, the ACPJ12X90-20S carries a 12 mm bore and a 90 mm stroke trimmed by a 20 mm stop-screw window, so the usable range is 70-90 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa that rises to 79.2 N push and 59.4 N pull, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The 90 mm stroke exceeds the 50 mm standard maximum for this bore, so it is a made-to-order build. Note: this model is discontinued; the current-production replacement is ACEJ12X90.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and guard-mounted tooling. In practice, plan on roughly 34 N of usable push at 0.5 MPa (about 0.6 of the rating), which lifts about 2.9 kg vertically with a 2:1 margin. The -S code fits the magnet, so CMSE / DMSE reed or solid-state switches can be mounted for end-of-stroke signalling. A fixed TPU bumper sits at both ends, the hard-anodized aluminium body carries M5x0.8 ports, and the rod ends in a female M3x0.5 thread. Operating window: 0.15-1.0 MPa (22-145 psi), 30-500 mm/s, -20 to +70 C.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-20S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-20S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X90-20S |
| Bore size | Ø12 mm |
| Stroke | 90 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 ACEJ12X90-20S (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 ACPJ12X90-20S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×90 | 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 ACPJ12X90-20S Is Used
Signalled part present check
The fitted magnet and a CMSE switch confirm the 70-90 mm extend range on a small electronics-assembly fixture, with 56.5 N enough to seat lightweight connectors.
Micro press for connector seating
A 20 mm trim window lets one cylinder serve two shallow press depths on a PCB depaneling station, delivering 79.2 N push at 0.7 MPa for soft crimp work.
Compact gate pusher in a tight guard
The short body fits inside a machine-guard pocket where a full-length profile cylinder cannot, nudging small plastic trays off a conveyor lane.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-20S with the ACEJ12X90-20S
At 12 mm bore this is the smallest force class in the family: 56.5 N push at 0.5 MPa. If your part or clamp needs more, step up to the 16 mm bore (100.5 N push at 0.5 MPa) or the 20 mm bore (157.1 N). If 56.5 N covers the job with margin, stay here. The stop screw only shortens the extend stroke within the 20 mm window and 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 and LB foot mountings bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches. Before ordering, confirm the ISO 21287 mounting dimensions of the ACEJ12X90 replacement against your fixture.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X90-20S
- ✓ 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 ACPJ12X90-20S FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa it pushes 79.2 N and pulls 59.4 N; theoretical maximum is 11.5 kgf at 1.0 MPa. The ordered stroke is 90 mm with a 20 mm adjustment window, so the stop screw trims the extend stroke anywhere in a 70-90 mm range. The 90 mm stroke is a made-to-order length because the bore 12 standard maximum is 50 mm. Speed range is 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
No - the ACPJ family is discontinued. The current-production drop-in is ACEJ12X90 (swap the P for an E), which matches the same bore, stroke and force class in the ISO 21287 short-body format. Because the ACP was built to a DIN standard, confirm the ISO 21287 mounting dimensions against your fixture before swapping. The ACEJ keeps FA/FB flange and LB foot options, and order the -S code there if you also need the magnet for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X90-20S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X90-20S replacement — usually within 7-8 hours.