This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X90-20, 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 ACPJ12X90-20
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X90-20 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 ACEJ12X90-20 (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 → ACEJ12X90-20
- 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 ACPJ12X90-20
The ACPJ12X90-20 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 90 mm stroke by up to 20 mm, giving a usable 70-90 mm range. In the 12 mm bore class it delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N / 59.4 N at 0.7 MPa, 11.5 kgf theoretical max at 1.0 MPa). The 90 mm stroke is longer than 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, so confirm ISO 21287 mounting dimensions before swapping.
The short ISO 21287-style body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and guarding where a full-length body cannot fit. As a rule of thumb, plan on roughly 34 N of real work at 0.5 MPa (about 0.6 of the push rating), which lifts about 2.8 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries an S45C hard-chrome rod, a female M3x0.5 rod thread, M5x0.8 ports and fixed TPU bumpers at both ends. No magnet is fitted on this version; the optional -S code is what enables CMSE / DMSE switches.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-20 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-20 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X90-20 |
| 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 ACEJ12X90-20 (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 ACPJ12X90-20
| 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 ACPJ12X90-20 Is Used
Small-part ejection from a jig
The 70-90 mm adjustable extend range lets a fixture builder trim the exact eject position for 2-3 kg machined pins, using the 56.5 N push at 0.5 MPa.
Indexing gate on a compact assembly station
The short body, roughly half the mounting length of an ISO 15552 profile cylinder, fits inside guarding where a longer 12 mm bore body would collide with the frame.
Lab sample press with a trimmed stroke
The stop screw shortens the 90 mm stroke on site for light pressing of vials or coupons, with the 42.4 N pull force retracting the rod between cycles.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-20 with the ACEJ12X90-20
Size up if 56.5 N at 0.5 MPa is marginal: the 16 mm bore pushes 100.5 N and the 20 mm bore 157.1 N at the same pressure. Size down only if the 42.4 N pull force still covers your return load. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock, so the rod can still drift if air is lost. FA/FB flange and LB foot mountings bolt to the standard face, and the optional -S magnet is required if you want CMSE / DMSE switch feedback. For new designs, order the ACEJ12X90 instead, since this ACPJ is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X90-20
- ✓ 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 ACPJ12X90-20 FAQ
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. It is a double acting 12 mm bore with a 90 mm made-to-order stroke (standard maximum for this bore is 50 mm), a 20 mm adjustment window, M5x0.8 ports, a female M3x0.5 rod thread, speed 30-500 mm/s, operating pressure 0.15-1.0 MPa (22-145 psi) and fixed TPU bumpers both ends.
Order the ACEJ12X90, the current-production ISO 21287 successor: swap the P for an E and you get the same bore, stroke and force class in a matching short body. Before swapping, confirm the ISO 21287 mounting dimensions against your fixture, because the ACPJ follows the older DIN-standard compact layout. Also note the -S magnet code if you need CMSE / DMSE switch positions on the replacement.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X90-20
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X90-20 replacement — usually within 7-8 hours.