This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ16X40-20B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ16X40-20B 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 ACPJ16X40-20B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20B is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 40mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X40-20B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X40-20B
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20B
A double acting compact cylinder with an adjustable extend stroke, the ACPJ16X40-20B uses a 16 mm bore and a 40 mm basic stroke that an external stop screw trims by up to 20 mm, giving a usable range of 20-40 mm. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa those rise to 140.7 N and 105.6 N, with a theoretical 20.5 kgf at 1.0 MPa. The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding. The rod end is male thread (the B code) and the air port is M5x0.8.
This model is discontinued; the current-production replacement is the ACEJ16X40, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping. Plan real work at about 60 N (0.6 of the push rating) at 0.5 MPa, which lifts roughly 5 kg vertically with a 2:1 margin. Air is filtered to 40 um, pressure runs 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and a fixed TPU bumper sits at both ends. The magnet is the optional -S code only; this version has none, so no CMSE / DMSE switch can be fitted.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X40-20B |
| Bore size | Ø16 mm |
| Stroke | 40 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 ACEJ16X40-20B (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 ACEJ16X40-20B 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 ACPJ16X40-20B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -20 | 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 ACPJ16X40-20B Is Used
Fixture clamping on small CNC jigs
The 20-40 mm trimmed stroke clamps small machined parts in a drill or milling fixture, with about 60 N of usable force at 0.5 MPa enough for light clamping fingers.
Bottle and carton press-check station
On a packaging line, the stop screw sets an exact 20-40 mm press travel to seat caps or fold tabs, and the short body fits inside a compact guard.
Ejector on an electronics test bench
With the -S magnet ordered, CMSE or DMSE switches flag end positions as the rod pushes PCB trays off a test nest at up to 500 mm/s.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20B with the ACEJ16X40-20B
If 100.5 N of push at 0.5 MPa is marginal for the job, step up to the 20 mm bore for 157.1 N; if the load is light and space is very tight, the 12 mm bore gives 56.5 N. Size the stop so the trimmed stroke still clears the part - the adjuster shortens the extend stroke only and never lengthens it past 40 mm. Remember the stop is a mechanical end stop, not a mid-stroke lock: on air loss the piston still drifts, so add a separate holding valve for suspended loads. FA/FB flange and LB foot mountings bolt to the standard face; order the -S code if CMSE / DMSE switching is needed. For new builds, specify the ACEJ16X40 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X40-20B
- ✓ 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 ACPJ16X40-20B FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa, 140.7 N push and 105.6 N pull; theoretical maximum is 20.5 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window, so the stop screw can trim the 40 mm extend stroke anywhere down to 20 mm. It runs on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um at 30-500 mm/s, with a fixed TPU bumper at both ends. This model is discontinued - the ACEJ16X40 is the current drop-in.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA/FB flange or LB foot mountings bolt straight to the standard face. Position switching needs the optional -S magnet ordered with the cylinder; without -S there is no magnet and no CMSE / DMSE switch can be mounted. Rod end here is male thread (B code) with an M5x0.8 port.
Related AirTAC ACE Cylinders
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