This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X10-10S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X10-10S 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.

The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X10-10S is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 10mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X10-10S (ISO 21287 ACE), in the same bore, stroke and force class.
This ACPJ20X10-10S is a double acting compact cylinder with an adjustable stroke: a stop screw trims the 10 mm extend stroke anywhere within the ordered 10 mm window, giving a usable range of 0-10 mm. The 20 mm bore delivers 157.1 N push and 117.8 N pull at 0.5 MPa, rising to 219.9 N at 0.7 MPa, with a theoretical peak of 32 kgf at 1.0 MPa. A fixed TPU bumper sits at both ends, and the -S code means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be mounted directly on the body.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into cramped fixtures such as ejection stations and small clamping nests. For sizing, treat about 0.6 of the push force as usable work, so plan on roughly 94 N, which lifts about 16 kg vertically - halve that for a 2:1 margin and match parts up to about 8 kg. Note this model is discontinued: the current-production replacement is the ACEJ20X10, a drop-in successor in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X10-10S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X10-10S |
| Bore size | Ø20 mm |
| Stroke | 10 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 ACEJ20X10-10S (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.
| 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 ACEJ20X10-10S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×10 | Stroke length in mm. |
| -10 | 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).
Presses bearings or bushings into aluminium housings on an electronics assembly bench, using the 157.1 N push at 0.5 MPa and the 0-10 mm trimmed stroke for repeatable seating depth.
Ejects finished connectors off a fixture nest in a packaging cell; the fitted magnet drives a CMSE switch to confirm the short 10 mm return stroke every cycle.
Clamps small brackets inside a crowded drilling jig where a full-length profile cylinder will not fit - the short body cuts mounting length by about half.
At 20 mm bore this sits in the mid compact class: the 16 mm bore gives 100.5 N push at 0.5 MPa if your load is lighter, while stepping up adds force only via the discontinued larger frames - the ACEJ range covers those now. The adjuster is a mechanical end stop for the extend stroke, not a mid-stroke lock, so on air loss the piston still drifts and you need separate holding for suspended loads. Mounting uses FA/FB flanges or LB feet on the ISO 21287 face, and this unit already carries the optional -S magnet for CMSE / DMSE switches. Order the ACEJ20X10 as the current replacement and verify mounting dimensions against your fixture.
Replacement checklist
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa that rises to 219.9 N push and 164.9 N pull, with a theoretical maximum of 32 kgf at 1.0 MPa. It runs double acting 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, a 10 mm rod with female M6x1.0 thread, and a fixed TPU bumper at both ends.
The -10 code sets a 10 mm adjustment window: a stop screw on the extend side shortens the 10 mm stroke on site, so the usable range is 0-10 mm - it trims the stroke, it never extends it past the ordered length. The ACPJ family is discontinued; the current-production drop-in is the ACEJ20X10 in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions against your fixture before swapping, since the ACP is DIN-standard.
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X10-10S replacement — usually within 7-8 hours.