This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ12X20-20 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ12X20-20 in place of this model. 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 ACPJ12X20-20
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-20 is a double acting, 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 ACEJ12X20-20 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X20-20
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-20
The ACPJ12X20-20 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 20 mm stroke by up to 20 mm, giving a usable range of 0-20 mm on site. The 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 / 59.4 N at 0.7 MPa), with a theoretical peak of 11.5 kgf at 1.0 MPa. As a rule of thumb, plan on roughly 33.9 N of real work at 0.5 MPa, which is about 2.9 kg of vertical lift with a 2:1 margin.
This model is discontinued; the current-production replacement is ACEJ12X20, which swaps the P for an E and matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, since the ACP was DIN-standard. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and small fixtures. No magnet is fitted on this version (no S code), so no CMSE / DMSE switch can be mounted; order the optional -S magnet if sensing is needed.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-20 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-20 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X20-20 |
| Bore size | Ø12 mm |
| Stroke | 20 mm |
| Acting type | Double acting, 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 ACEJ12X20-20 (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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 kgf | |
The ACEJ12X20-20 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-20
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×20 | 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 (adjustable stroke).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-20 Is Used
Micro fixture clamping
Holds small electronics or watch-parts in machining jigs where 56.5 N at 0.5 MPa is enough and the 0-20 mm trim lets one cylinder serve several part heights.
Compact ejector on pick-and-place heads
The short body, about 50% shorter in mounting length than an ISO 15552 profile cylinder, fits dense gantry heads pushing light components off vacuum cups.
Lab and test-rig actuation
Drives small gates or probe plungers on automated test benches at 30-500 mm/s, with the stop screw set precisely for each fixture change.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-20 with the ACEJ12X20-20
At 12 mm bore this is the smallest force step in the range: 56.5 N push at 0.5 MPa suits light clamping and part presence in miniature fixtures. If your load needs more, the 16 mm bore gives 100.5 N push at 0.5 MPa; if 56.5 N is already ample, stay here to save space and air. The stop screw only shortens the extend stroke - it is not a mid-stroke lock, so the piston can drift on air loss. Mounting uses FA/FB flange or LB foot on the ISO 21287 face, and the rod end is female M3x0.5 with PT ports. For new builds, specify ACEJ12X20 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X20-20
- ✓ 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 ACPJ12X20-20 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. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, air filtered to 40 um, M5x0.8 port, 6 mm rod with female M3x0.5 thread, and a fixed TPU bumper at both ends. The -20 code is a 20 mm adjustment window on the 20 mm stroke.
Order ACEJ12X20, the current ISO 21287 replacement: swap the P for an E and you get the same 12 mm bore, 20 mm stroke and force class in a short-body compact cylinder. Confirm the ISO 21287 mounting dimensions against your fixture first, since the old ACP was DIN-standard. If you need position sensing, check that the replacement carries the magnet option for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
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