This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ12X125-30S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ12X125-30S 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 ACPJ12X125-30S
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ12X125-30S is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 125mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X125-30S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X125-30S
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X125-30S
Double acting and adjustable in stroke, this discontinued ACPJ12X125-30S carries a 12 mm bore with a 125 mm made-to-order stroke and a 30 mm trim window: an external stop screw shortens the extend stroke anywhere in the 95-125 mm range, so one cylinder serves several fixture depths. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N at 0.7 MPa, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight jigs and guarding where a full-length body will not fit.
Plan on roughly 34 N of real work at 0.5 MPa (about 0.6 of the push rating), which corresponds to lifting about 3 kg vertically - and halve that to around 1.7 kg if you want a 2:1 margin on a vertical lift. The 6 mm rod ends in a female M3x0.5 thread and the ports are M5x0.8. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be mounted for end-of-stroke signalling. Production has ended: the current drop-in is the ACEJ12X125, and you should confirm the ISO 21287 mounting dimensions before swapping, since the ACP was built to a DIN standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X125-30S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X125-30S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X125-30S |
| Bore size | Ø12 mm |
| Stroke | 125 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 ACEJ12X125-30S (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 ACEJ12X125-30S 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 ACPJ12X125-30S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×125 | 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 ACPJ12X125-30S Is Used
Micro-assembly press fit
A 30-40 mm trimmed extend stroke seats small connectors or bearings in electronics assembly, using about 34 N of usable push force at 0.5 MPa.
Signalled eject on a test rig
With the -S magnet fitted, CMSE switches confirm the trimmed extend position before a PLC releases the part under test.
Bottle-capping slide
A compact 12 mm bore body slides a capping head into a tight packaging frame, retracting fully to clear the container path.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X125-30S with the ACEJ12X125-30S
At 56.5 N push (0.5 MPa) this 12 mm bore suits light clamping, sorting and eject tasks; step up to the 16 mm bore (100.5 N push) if the load doubles, or down only if space is tighter than the force budget. The 125 mm stroke exceeds the 50 mm standard maximum for this bore, so it is made to order - expect a lead time. The stop screw trims the extend stroke only within the ordered 30 mm window; it is a mechanical end stop, not a mid-stroke lock, so on air loss the piston still drifts and cannot hold a load. FA/FB flanges and LB feet bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches. For new projects, order the current ACEJ12X125 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X125-30S
- ✓ 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 ACPJ12X125-30S FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa, 79.2 N push and 59.4 N pull; theoretical maximum 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, fluid air filtered to 40 um. The 125 mm stroke is non-standard (bore 12 standard max is 50 mm) and the -30 code gives a 30 mm extend-trim window, so usable stroke is 95-125 mm.
A stop screw at the head end shortens the extend stroke by up to 30 mm within the ordered window; it cannot lengthen the stroke past 125 mm and it does not brake or hold a load. A fixed TPU bumper pads both ends. The ACPJ family is discontinued - the current-production drop-in is the ACEJ12X125 (same bore, stroke and force class); confirm the ISO 21287 mounting dimensions before swapping, as the ACP was DIN-standard. This unit carries the optional -S magnet for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
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