This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ12X50-10B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ12X50-10B 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 ACPJ12X50-10B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-10B is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 50mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X50-10B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke50 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X50-10B
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-10B
This ACPJ12X50-10B is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 50 mm stroke by up to 10 mm, giving a usable range of 40-50 mm. Air pushes the piston both ways, so no spring is involved, and the bore 12 size delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N / 59.4 N at 0.7 MPa). The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into slim jigs and guarded stations where a full-length body simply will not fit.
Note before ordering: the ACPJ family is discontinued, and the current-production drop-in is the ACEJ12X50 - same bore, stroke and force class - so confirm the ISO 21287 mounting dimensions before swapping, since the ACP follows a DIN-standard footprint. This unit carries the B male rod thread and a PT port thread, and because no S code is ordered there is no magnet fitted, so CMSE / DMSE switches cannot be used on this version. For planning, treat about 0.6 of the 56.5 N push (roughly 34 N, or about 3.4 kgf) as the practical working force at 0.5 MPa rather than the full rating.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-10B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-10B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X50-10B |
| Bore size | Ø12 mm |
| Stroke | 50 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 ACEJ12X50-10B (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 ACEJ12X50-10B 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 ACPJ12X50-10B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -10 | 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 ACPJ12X50-10B Is Used
Micro part clamping
Holds small electronics or watch components in a 40-50 mm clamping range during soldering or inspection, using the 56.5 N push at 0.5 MPa and the stop screw to set the exact clamp position.
Ejector on a compact pick station
Pushes tiny stamped parts off a nest on an automated assembly line; the short body fits inside the guard where a full-length ISO 15552 profile cylinder would not.
Lab fixture actuation
Cycles a small cover or shutter on a test rig at 30-500 mm/s, with the male B rod thread taking an I or Y knuckle for the linkage.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-10B with the ACEJ12X50-10B
At bore 12 the 56.5 N push at 0.5 MPa suits light clamping and part presence checks; if your load needs more, step up to bore 16 (100.5 N push at 0.5 MPa) or bore 20 (157.1 N). The 10 mm adjustment window only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so on air loss the piston still drifts and cannot hold a load. Match FA/FB flange or LB foot hardware to your fixture, and remember the optional -S magnet is what enables CMSE / DMSE switch sensing. For new builds, order the ACEJ12X50 instead, as this model is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X50-10B
- ✓ 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 ACPJ12X50-10B 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 -10 code is a 10 mm adjustment window: an external stop screw shortens the 50 mm extend stroke on site, so the working range is 40-50 mm. It cannot lengthen the stroke past 50 mm, and the stop is not a load-holding brake - on air loss the piston drifts.
It is a short-body compact unit with a hard-anodized aluminium body, S45C hard-chrome rod, fixed TPU bumpers at both ends and an M5x0.8 port, saving about 50% of the mounting length of an ISO 15552 profile cylinder. The ACPJ family is no longer in production; the current drop-in is the ACEJ12X50 (same bore, stroke and force class). Confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard, and order the -S code if you need the optional magnet for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
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