This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ16X120-50B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ16X120-50B 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 ACPJ16X120-50B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-50B is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm 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 ACEJ16X120-50B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X120-50B
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-50B
This discontinued AirTAC model is a double acting compact cylinder with an adjustable extend stroke: the -50 stop screw trims the 120 mm stroke down to as little as 70 mm on site, so one unit covers a 70-120 mm working range. The 16 mm bore delivers 100.5 N push and 75.4 N pull at 0.5 MPa (140.7 N / 105.6 N at 0.7 MPa, 20.5 kgf theoretical maximum at 1.0 MPa). Its hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits shallow jigs and guard rails that full-length bodies cannot.
In practice, plan for roughly 60 N of real work at 0.5 MPa (about 0.6 of the push rating), which lifts about 5 kg vertically with a 2:1 margin - enough for small fixture clamps or light part transfer. The rod end is male thread (the B code), the port is M5x0.8, and fixed TPU bumpers decelerate at both ends. Note that the 120 mm stroke exceeds the 75 mm standard maximum for bore 16, so it is a made-to-order build. Since this model is discontinued, order the current ACEJ16X120 replacement and confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-50B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-50B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X120-50B |
| Bore size | Ø16 mm |
| Stroke | 120 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 75 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ16X120-50B (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 (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 101 N | 75 N |
| 0.7 MPa | 141 N | 106 N |
| Max (@1.0 MPa) | 21 kgf | |
The ACEJ16X120-50B 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 ACPJ16X120-50B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | 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 ACPJ16X120-50B Is Used
Machine tuning on a packaging line
The 70-120 mm adjustable range lets a commissioning engineer trim the extend stroke of a small push-off actuator without swapping cylinders when the product size changes.
Light clamping in a shallow jig
About 60 N of usable force at 0.5 MPa clamps small aluminium brackets in a fixture whose depth cannot accept a full-length body.
Lifting small parts in a test station
With a 2:1 margin the bore lifts about 5 kg vertically, matching small sensor housings or connector blocks raised into a gauge head.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-50B with the ACEJ16X120-50B
Size both ways: if 100.5 N push at 0.5 MPa is more than your load needs, the 12 mm bore (56.5 N push) saves space; if you need more force, step up to the 20 mm bore (157.1 N push). The 50 mm window suits jobs where the exact stroke is tuned during commissioning, but remember the stop screw only shortens the extend stroke - it is not a mid-stroke lock, and the piston still drifts if air is lost. Mounting is FA/FB flange or LB foot with I/Y rod knuckles. This unit has no magnet because the -S code was not ordered; if you need CMSE / DMSE switches, the ACEJ16X120 replacement can be ordered with the optional -S magnet.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X120-50B
- ✓ 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 ACPJ16X120-50B FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa it pushes 140.7 N and pulls 105.6 N; theoretical maximum is 20.5 kgf at 1.0 MPa. The -50 stop screw shortens the 120 mm extend stroke by up to 50 mm, giving a usable 70-120 mm range. Operating pressure is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, port M5x0.8, male rod thread, fixed TPU bumpers both ends. The 120 mm stroke is a made-to-order build because the bore 16 standard maximum is 75 mm.
Order the ACEJ16X120, the current-production ISO 21287 replacement: swap the P for an E and you get the same bore, stroke and force class in a matching short body. Before swapping, confirm the ISO 21287 mounting dimensions against your existing holes, since the ACPJ was built to a DIN-standard compact footprint. If you need position sensing, order the ACEJ with the optional -S magnet so CMSE / DMSE switches can be fitted.
Related AirTAC ACE Cylinders
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