This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ16X120-40 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ16X120-40 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 ACPJ16X120-40
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-40 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 ACEJ16X120-40 (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 → ACEJ16X120-40
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-40
The ACPJ16X120-40 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 120 mm stroke by up to 40 mm on site, giving a usable range of 80-120 mm. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N, and at 0.7 MPa those rise to 140.7 N and 105.6 N. The 120 mm stroke is longer than the 75 mm standard maximum for a 16 mm bore, so this unit is made to order. The ACPJ family is discontinued; the current-production drop-in is the ACEJ16X120, so confirm ISO 21287 mounting dimensions before swapping.
Its short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters in slim gantries and guarded stations. With the 100.5 N push figure, plan for roughly 60 N (about 6 kg) of real work at 0.5 MPa, and expect around 10 kg of vertical lift capability at full push force - halve that to about 5 kg for a 2:1 margin. The fixed TPU bumper at both ends only decelerates the piston; it never locks or holds a load, so on air loss the rod can drift. FA/FB flanges and LB feet bolt to the standard face, and the optional -S magnet enables CMSE / DMSE switches - this code has no S, so no magnet is fitted.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-40 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-40 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X120-40 |
| 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 ACEJ16X120-40 (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 (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 ACEJ16X120-40 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 ACPJ16X120-40
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | 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 ACPJ16X120-40 Is Used
Small-parts ejection on assembly stations
The 80-120 mm adjustable range lets a fixture builder trim the eject stroke of connectors or PCBs in a tight cell, with 100.5 N of push at 0.5 MPa enough for light plastic parts.
Light part lift in a compact pick station
With roughly 5 kg of vertical lift at a 2:1 margin, the 16 mm bore raises small machined blanks from a chute inside a guard where a full-length profile cylinder will not fit.
End-of-stroke verification on test rigs
Order the -S version to add CMSE / DMSE switches and confirm the trimmed extend position on a leak-test fixture; this code without S has no magnet, so no sensor can be mounted.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-40 with the ACEJ16X120-40
Size both ways: if 100.5 N at 0.5 MPa is marginal, step up to the 20 mm bore for 157.1 N; if you need less force and a shorter body, the 12 mm bore gives 56.5 N. Remember the adjuster is a mechanical end stop for the extend stroke, not a mid-stroke lock - do not use it to hold a load against air loss. Match FA/FB flange or LB foot hardware to your fixture, and order the -S code if you need CMSE / DMSE position switches. For new designs, specify the ACEJ16X120 instead, since this ACPJ model is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X120-40
- ✓ 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 ACPJ16X120-40 FAQ
Push is 100.5 N and pull 75.4 N at 0.5 MPa; at 0.7 MPa push is 140.7 N and pull 105.6 N, with a theoretical maximum of 20.5 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, fluid air filtered to 40 um, and the port is M5x0.8 with an M4x0.7 female rod thread. The 120 mm stroke exceeds the 75 mm standard maximum for a 16 mm bore, so it is made to order.
The -40 code sets a 40 mm window: an external stop screw shortens the 120 mm extend stroke to any length down to 80 mm, and the fixed TPU bumpers at both ends simply decelerate the piston - they never brake or hold a load. The ACPJ family is discontinued; the current-production drop-in is the ACEJ16X120 (swap the P for an E) in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, because the ACP was built to a DIN-standard footprint.
Related AirTAC ACE Cylinders
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