This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X90-20B, 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 ACPJ12X90-20B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X90-20B 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 ACEJ12X90-20B (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 → ACEJ12X90-20B
- 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 ACPJ12X90-20B
This compact cylinder is double acting, with air driving the rod out and pulling it back, and its -20 code adds a 20 mm adjustment window: an external stop screw trims the extend stroke anywhere in a 70-90 mm range on site. The 90 mm stroke is longer than the 50 mm maximum standard stroke for a 12 mm bore, so it is a made-to-order build. It is discontinued; the current-production replacement is the ACEJ12X90, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, since the ACP body is DIN-standard.
At 0.5 MPa the 12 mm bore delivers 56.5 N push and 42.4 N pull (79.2 N / 59.4 N at 0.7 MPa). Plan on roughly 34 N of usable work at 0.5 MPa, which lifts about 2.9 kg vertically with a 2:1 margin. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, the rod end is male thread (B code), and the fixed TPU bumper pads at both ends simply decelerate the piston - they never hold a load. No magnet is fitted on this version; order the -S code if you later need CMSE / DMSE switch sensing.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-20B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-20B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X90-20B |
| 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 ACEJ12X90-20B (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 ACPJ12X90-20B
| 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 ACPJ12X90-20B Is Used
Small-part ejection from plastic molds
The 56.5 N push at 0.5 MPa is enough to kick light molded caps or clips off a benchtop mold, and the 70-90 mm trimmed stroke keeps the ejector tip inside a tight die set.
Gate actuation on compact test fixtures
A 90 mm stroke swings a small guard or sample gate clear on an electronics test bench; the male rod thread (B) accepts a knuckle for a pivoting gate arm, and the -S magnet version can add CMSE / DMSE end-position switches.
Sample press in a lab dosing station
About 2.9 kg of vertical press force with a 2:1 margin seats vials or seals foil liners in low-volume lab packaging, where the short body fits under a benchtop frame that a full-length profile cylinder cannot.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X90-20B with the ACEJ12X90-20B
Size the bore both ways: the 16 mm bore gives 100.5 N push at 0.5 MPa if 56.5 N falls short of your jig load, while a 10 mm-class compact unit is not in this range, so step down only if your force need is under about 34 N of real work. Remember the stop screw shortens the extend stroke only - it is not a mid-stroke lock, and the rod still drifts if air is lost. FA/FB flange and LB foot mountings bolt to the standard face, and I/Y rod knuckles suit the male rod thread. For new designs, order the ACEJ12X90 instead: same bore, stroke and force class, in current production.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X90-20B
- ✓ 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 ACPJ12X90-20B 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. The -20 code gives a 20 mm adjustment window: a stop screw shortens the 90 mm extend stroke to any length in a 70-90 mm range. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, with a fixed TPU bumper at each end and an M5x0.8 port.
The hard-anodized aluminium body with S45C hard-chrome rod is a short ISO 21287-class compact build that saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits shallow jigs and guards. This ACPJ model is discontinued; the current drop-in is the ACEJ12X90 (same 12 mm bore, 90 mm stroke and force class). Confirm the ISO 21287 mounting dimensions before swapping, since the ACP body is DIN-standard, and note the 90 mm stroke is a made-to-order length above the 50 mm standard maximum for this bore.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X90-20B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X90-20B replacement — usually within 7-8 hours.