This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ12X25-30B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ12X25-30B 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 ACPJ12X25-30B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-30B is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 25mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X25-30B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X25-30B
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-30B
Double acting and adjustable, the ACPJ12X25-30B is a DIN-standard compact cylinder with a 12 mm bore, a 25 mm stroke and a 30 mm adjustment window. An external stop screw trims the extend stroke anywhere within that window, so the usable range is 0-25 mm without changing the cylinder. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N push at 0.7 MPa. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits shallow jigs and guard brackets. Note: this model is discontinued; the current-production drop-in is the ACEJ12X25.
The male rod thread (B code) carries a 6 mm rod with an M6x1.0-class male end, and the M5x0.8 ports take PT fittings. A fixed TPU bumper sits at both ends. Plan on roughly 34 N of real work at 0.5 MPa, which lifts about 2.9 kg vertically with a 2:1 margin. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and the hard-anodized aluminium body carries an S45C hard-chrome rod. No magnet is fitted on this version; order the -S code if you later need CMSE / DMSE switch positions. Confirm ISO 21287 mounting dimensions before swapping to the ACEJ12X25.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-30B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-30B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X25-30B |
| Bore size | Ø12 mm |
| Stroke | 25 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 ACEJ12X25-30B (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 ACEJ12X25-30B 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 ACPJ12X25-30B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -30 | 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 ACPJ12X25-30B Is Used
Small-parts ejection from plastic molds
The 56.5 N push at 0.5 MPa nudges finished clips or bushings off a mold face, and the 30 mm adjustment window lets the operator dial the extend stroke down to the exact part height.
Compact gating on an electronics assembly line
With the optional -S magnet and a DMSE switch, the 25 mm stroke confirms gate-open position inside a guard where a full-length cylinder cannot fit.
Sample press in a lab automation station
About 2.9 kg of vertical lift capacity at a 2:1 margin seats microplate lids or vial caps gently, with the male rod thread taking a custom press pad.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X25-30B with the ACEJ12X25-30B
At 12 mm bore this is the smallest force class in the range: 56.5 N push at 0.5 MPa. If your load 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 is generous for the job, this size keeps the envelope minimal. The stop screw is a mechanical end stop for the extend stroke only, not a mid-stroke lock, so the piston still drifts if air is lost. FA/FB flange and LB foot mountings bolt to the standard face, and the optional -S magnet enables CMSE / DMSE switches. For new builds, specify the ACEJ12X25 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X25-30B
- ✓ 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 ACPJ12X25-30B 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. The theoretical maximum is 11.5 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s. For real work, plan on about 34 N at 0.5 MPa, roughly 2.9 kg of vertical lift with a 2:1 margin.
The -30 code is a 30 mm window: a stop screw shortens the 25 mm extend stroke on site, giving a usable range of 0-25 mm. It is an end stop, not a load-holding brake. The ACPJ12X25-30B is discontinued; the ACEJ12X25 is the current ISO 21287 drop-in with the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Related AirTAC ACE Cylinders
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