This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X90-40B, 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 ACPJ12X90-40B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X90-40B 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 ACEJ12X90-40B (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 → ACEJ12X90-40B
- 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 ACPJ12X90-40B
The ACPJ12X90-40B is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 90 mm stroke by up to 40 mm, giving a usable range of 50-90 mm on site. Air works on both sides of the piston, and a fixed TPU bumper sits at each end. At 0.5 MPa this 12 mm bore delivers 56.5 N of push and 42.4 N of pull, which works out to roughly 34 N of practical working force - enough to lift about 2.9 kg vertically with a 2:1 margin. Note that the 90 mm stroke exceeds the 50 mm maximum standard stroke for bore 12, so this unit is made to order.
The hard-anodized aluminium body with an S45C hard-chrome rod keeps the short ISO 21287-class footprint about 50% shorter in mounting length than an ISO 15552 profile cylinder, so it slots into tight jigs and guarding. This model is discontinued: the current-production drop-in is the ACEJ12X90, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping. The male rod thread (B code) and PT ports are ready for standard fittings.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-40B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-40B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X90-40B |
| 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 ACEJ12X90-40B (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 ACPJ12X90-40B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×90 | Stroke length in mm. |
| -40 | 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 ACPJ12X90-40B Is Used
Fixture clamping on small CNC jigs
The 56.5 N push at 0.5 MPa secures small aluminium brackets during drilling, and the 50-90 mm trim range adapts the clamp point to different part heights without re-plumbing.
Ejector on electronics assembly stations
A 2.9 kg vertical lift capacity with a 2:1 margin clears PCB trays off a conveyor lane, and the male rod thread takes a standard knuckle for the pusher plate.
Carton flap tuck on compact packaging heads
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits inside the narrow frame of a semi-auto carton sealer where full-length bodies cannot.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-40B with the ACEJ12X90-40B
At 12 mm bore you get 56.5 N push at 0.5 MPa; step up to the 16 mm bore for 100.5 N or down only if your load is under about 34 N of real work. The 40 mm window suits stations where product sizes vary and you re-trim the extend stroke per changeover. Remember the stop screw is a mechanical end stop, not a mid-stroke lock - on air loss the piston still drifts, so add a separate clamp if you must hold position. If you need position feedback, order the -S variant with the optional magnet for CMSE / DMSE switches; this B-code unit has no magnet fitted. For new projects, specify the ACEJ12X90 instead, as this ACPJ model is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X90-40B
- ✓ 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 ACPJ12X90-40B 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, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The -40 code gives a 40 mm adjustment window, so the extend stroke can be trimmed anywhere between 50 and 90 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and the 90 mm stroke is a made-to-order length since the bore 12 standard maximum is 50 mm.
The ACPJ12X90-40B is discontinued; the current-production drop-in is the ACEJ12X90, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, since the ACP series follows the DIN-standard footprint. For sensing, the magnet is the optional -S code: this unit has no magnet, so no CMSE or DMSE switch can be mounted. Order the -S version if you need reed or solid-state switch feedback.
Related AirTAC ACE Cylinders
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