This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X15-20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X15-20S 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 ACPJ20X15-20S
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X15-20S is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 15mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X15-20S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke15 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X15-20S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X15-20S
A double acting compact cylinder with an adjustable extend stroke, the ACPJ20X15-20S carries a 20 mm bore and a 15 mm base stroke that a stop screw trims by up to 20 mm on site, giving a usable range of 0-15 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those figures rise to 219.9 N and 164.9 N, with a theoretical ceiling of 32 kgf at 1.0 MPa. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures a full-length body cannot reach.
The -S code means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped on for end-of-stroke signalling - on models without -S there is no magnet at all. A fixed TPU bumper sits at both ends and only decelerates the piston; it never locks or holds a load, and on air loss the rod still drifts. Note that this model is discontinued: the current drop-in is ACEJ20X15, same bore, stroke and force class, but confirm the ISO 21287 mounting dimensions before swapping since the ACP was built to a DIN standard. As a rule of thumb, plan on roughly 94 N (about 9.6 kg vertical lift with a 2:1 margin) of real work rather than the full 157.1 N rating.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X15-20S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X15-20S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X15-20S |
| Bore size | Ø20 mm |
| Stroke | 15 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 100 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ20X15-20S (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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | 165 N |
| Max (@1.0 MPa) | 32 kgf | |
The ACEJ20X15-20S 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 ACPJ20X15-20S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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 ACPJ20X15-20S Is Used
Fixture clamping on CNC jigs
The 157.1 N push at 0.5 MPa clamps small aluminium or plastic workpieces in machining jigs, and the 0-15 mm trimmed stroke lets the setter dial in clamp travel without shimming.
Indexing with switch feedback
With the -S magnet fitted, CMSE or DMSE switches confirm rod position on a 15 mm indexing move, useful in electronics assembly stations that need a PLC handshake.
Ejecting parts from small moulds
A short 15 mm eject stroke with about 9.6 kg of practical vertical capacity nudges finished components off micro-mould nests where a longer body would not fit.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X15-20S with the ACEJ20X15-20S
At 20 mm bore this sits in the mid force band: a 16 mm bore gives 100.5 N push at 0.5 MPa, while stepping up adds cost and length you may not need - check whether 157.1 N covers the job first. The 20 mm adjustment window suits stations where the final position is tuned during commissioning, but remember the stop only shortens the extend stroke and is not a mid-stroke lock. FA/FB flange and LB foot mountings plus I/Y rod knuckles bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches. For new designs, order the ACEJ20X15 instead - this ACPJ version is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X15-20S
- ✓ 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 ACPJ20X15-20S FAQ
Push is 157.1 N and pull 117.8 N at 0.5 MPa; at 0.7 MPa push is 219.9 N and pull 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa. The bore is 20 mm, the stroke is 15 mm with a 20 mm adjustment window (usable 0-15 mm), the rod is 10 mm with a female M6x1.0 thread, the port is M5x0.8 PT, speed is 30-500 mm/s, and operating pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure.
An external stop screw shortens the extend stroke by up to 20 mm within the ordered window, so the effective range is 0-15 mm; it is a mechanical end stop, not a load-holding brake, so the rod still drifts if air is lost. The ACPJ family is discontinued - order the ACEJ20X15, the current ISO 21287 drop-in in the same bore, stroke and force class, and confirm the mounting dimensions before swapping because the ACP followed a DIN standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X15-20S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X15-20S replacement — usually within 7-8 hours.