This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X15-20B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X15-20B 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 ACPJ20X15-20B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X15-20B 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 ACEJ20X15-20B (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 → ACEJ20X15-20B
- 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 ACPJ20X15-20B
The ACPJ20X15-20B is a double acting, adjustable-stroke compact cylinder with a 20 mm bore and a 15 mm stroke, and it is now discontinued - the current-production replacement is the ACEJ20X15, which keeps the same bore, stroke and force class. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N push at 0.7 MPa, with a theoretical peak of 32 kgf at 1.0 MPa. The B code gives a male rod thread on the 10 mm rod, and the port is M5x0.8. Its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into cramped jigs and guarding where a full-length body cannot.
The -20 code sets a 20 mm adjustment window: an external stop screw trims the extend stroke on site anywhere from 0 to 15 mm, so one cylinder can be dialled to several product sizes without re-plumbing. A fixed TPU bumper sits at both ends, and the hard-anodized aluminium body carries an S45C hard-chrome rod. As a sizing rule of thumb, plan on about 94 N (roughly 9 kg of thrust) for real work at 0.5 MPa, which is about 60% of the rated push. Note the stop is a mechanical end stop, not a mid-stroke lock - on air loss the piston still drifts.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X15-20B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X15-20B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X15-20B |
| 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 ACEJ20X15-20B (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 (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 ACEJ20X15-20B 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 ACPJ20X15-20B
| 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 ACPJ20X15-20B Is Used
Small-part ejection on assembly fixtures
The 15 mm stroke with a 20 mm trim window lets one cylinder serve several part heights on a rotary indexing table, pushing about 157 N at 0.5 MPa to kick finished components off the nest.
Light press-fit of electronics connectors
With roughly 9 kg of usable thrust at 0.5 MPa, the 20 mm bore presses ribbon-cable connectors and small terminals into PCB housings without damaging delicate contacts.
Carton flap tucking on a packaging line
The short body fits inside tight guarding beside the conveyor, and the stop screw lets operators fine-tune the tuck depth for different carton sizes at speeds of 30-500 mm/s.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X15-20B with the ACEJ20X15-20B
At this bore, 157.1 N push at 0.5 MPa suits light clamping and positioning; if your load needs more, step up to a 25 mm or 32 mm bore, and if it needs less, a 16 mm bore (100.5 N push at 0.5 MPa) may be enough. The male rod thread (B) pairs with I/Y rod knuckles, and FA/FB flange or LB foot mounts bolt to the standard face. If you need position feedback, order the -S version with the optional magnet so CMSE / DMSE switches can be fitted - this unit has no magnet. Before ordering, confirm the ISO 21287 mounting dimensions of the ACEJ20X15 replacement against your fixture.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X15-20B
- ✓ 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 ACPJ20X15-20B FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa it pushes 219.9 N and pulls 164.9 N; theoretical maximum is 32 kgf at 1.0 MPa. It is double acting with a 15 mm stroke trimmed by a 20 mm adjustment window, runs on air filtered to 40 um at 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, with an M5x0.8 port and a male rod thread on the 10 mm rod.
The stop screw shortens the extend stroke on site anywhere from 0 to 15 mm within the ordered 20 mm window; it is a mechanical end stop, not a load-holding lock, so the piston 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 its mounting dimensions against your fixture first.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X15-20B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X15-20B replacement — usually within 7-8 hours.