This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ12X120-50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ12X120-50S 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 ACPJ12X120-50S
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-50S is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 120mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X120-50S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X120-50S
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-50S
This ACPJ12X120-50S is a double acting, adjustable-stroke compact cylinder in the DIN-standard ACP family, now discontinued. The 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa, rising to 79.2 N push at 0.7 MPa, with a theoretical peak of 11.5 kgf at 1.0 MPa. The -50 code gives a 50 mm adjustment window, so a stop screw trims the extend stroke anywhere in a 70-120 mm range on site. Note the 120 mm stroke exceeds the 50 mm standard maximum for this bore, so it is a made-to-order build.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits cramped jigs and guarding. As the S code is fitted here, the optional -S magnet is on board and CMSE or DMSE reed or solid-state switches can be mounted directly. In practice, plan on roughly 34 N of usable push at 0.5 MPa, which lifts about 2.9 kg vertically with a 2:1 margin. The current-production drop-in is the ACEJ12X120; confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-50S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-50S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X120-50S |
| Bore size | Ø12 mm |
| Stroke | 120 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 ACEJ12X120-50S (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 ACEJ12X120-50S 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 ACPJ12X120-50S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -50 | 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 ACPJ12X120-50S Is Used
Bench-top dial gauge fixture
The 70-120 mm adjustable range lets a technician trim the extend stroke to seat small aluminium housings under a dial indicator without changing hardware.
Presence check on an electronics assembly line
With the fitted -S magnet and a CMSE switch, the controller confirms the 12 mm bore reached the trimmed end position before a solder pallet advances.
Lab sample press
About 2.9 kg of vertical lift capacity at a 2:1 margin suits pressing microscope slide lids or capping small vials at 0.5 MPa.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-50S with the ACEJ12X120-50S
At 12 mm bore you get 56.5 N push at 0.5 MPa; step up to the 16 mm bore for 100.5 N or drop to the smallest size only if your load is under about 34 N of real work. The 50 mm window means the machine can be tuned between 70 mm and 120 mm extend stroke without re-plumbing. The adjuster is a mechanical end stop for the extend stroke, 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 this S-coded unit carries the optional magnet for CMSE / DMSE switches. For new designs, order the ACEJ12X120 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X120-50S
- ✓ 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 ACPJ12X120-50S 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, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The -50 code sets a 50 mm adjustment window: an external stop screw shortens the 120 mm extend stroke by up to 50 mm, giving a usable 70-120 mm range. The stop is an end stop only, not a load-holding brake. The 120 mm stroke is made to order, since the bore 12 standard maximum is 50 mm.
No, the ACPJ family is discontinued. The current-production drop-in is the ACEJ12X120, which matches the same bore, stroke and force class. Because the ACP is DIN-standard rather than ISO 21287, confirm the mounting dimensions before swapping. This unit has the optional -S magnet fitted, so CMSE / DMSE switches work; a replacement ordered without the S code carries no magnet. Both ends carry a fixed TPU bumper, and speed is 30-500 mm/s over 0.15-1.0 MPa (22-145 psi).
Related AirTAC ACE Cylinders
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