This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ12X120-40 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ12X120-40 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 ACPJ12X120-40
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-40 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 ACEJ12X120-40 (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 → ACEJ12X120-40
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-40
This is a double acting compact cylinder with an adjustable extend stroke: the -40 code gives a 40 mm stop-screw window, so the 120 mm stroke can be trimmed anywhere between 80 and 120 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. 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 roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits slim slides and guarding gates. In practice, plan on about 34 N of usable push at 0.5 MPa (roughly 0.6 of the rating), which lifts about 2.9 kg vertically with a 2:1 margin. A fixed TPU bumper sits at both ends, the hard-anodized aluminium body carries an S45C hard-chrome rod, and the rod end is female M3x0.5. This model is discontinued; the current-production drop-in is the ACEJ12X120, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-40 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-40 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X120-40 |
| 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 ACEJ12X120-40 (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 ACEJ12X120-40 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 ACPJ12X120-40
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -40 | 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 ACPJ12X120-40 Is Used
Small-part ejection on assembly benches
The 80-120 mm adjustable window lets a technician dial the eject stroke to clear a fixture, with 56.5 N push at 0.5 MPa enough for light plastic or stamped parts.
Lift-and-lower pins in semiconductor jigs
About 2.9 kg vertical lift capacity with a 2:1 margin suits raising lightweight trays or cover plates, and the short body fits inside tight jig plates.
Gate locking on compact packaging chutes
The stop screw trims the extend stroke so a gate seats consistently, while the fixed TPU bumper softens the ends at speeds from 30 to 500 mm/s.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-40 with the ACEJ12X120-40
At 12 mm bore this is the smallest force class in the range: 56.5 N push at 0.5 MPa versus 100.5 N for the 16 mm and 157.1 N for the 20 mm bore, so step up if your part weight approaches 3 kg. The 40 mm adjuster only shortens the extend stroke and acts as an end stop, not a mid-stroke lock, so the piston still drifts if air is lost. Mounting is FA/FB flange or LB foot, and without the optional -S magnet no CMSE / DMSE switch can be fitted. Order the ACEJ12X120 as the current replacement and verify the ISO 21287 footprint first.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X120-40
- ✓ 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 ACPJ12X120-40 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. The -40 code gives a 40 mm adjustment window, so the 120 mm extend stroke can be trimmed to any length between 80 and 120 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, port M5x0.8, female rod thread M3x0.5. The 120 mm stroke is a made-to-order length because the bore 12 standard maximum is 50 mm.
It is a short-body compact cylinder with a hard-anodized aluminium body and S45C hard-chrome rod, saving about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at each end and FA/FB flange or LB foot mounting. No magnet is fitted unless the optional -S code is ordered, and only then can CMSE / DMSE switches be used. This model is discontinued; the current drop-in is the ACEJ12X120 in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before you swap.
Related AirTAC ACE Cylinders
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