This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE20X90SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE20X90SB 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 ACP Compact Cylinder ACP20X90SB is a double acting DIN-standard tight/compact air cylinder with a Ø20mm bore and 90mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE20X90SB (ISO 21287 ACE), in the same bore, stroke and force class.
The ACP20X90SB is a double acting DIN-standard compact cylinder with a 20 mm bore and 90 mm stroke, built on a hard-anodized aluminium body with an S45C hard-chrome rod and a fixed TPU bumper at each end. At 0.5 MPa it pushes with 157.1 N and pulls with 117.8 N; at 0.7 MPa those figures rise to 219.9 N and 164.9 N, with a theoretical peak of 32 kgf at 1.0 MPa. Its 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 cylinder cannot reach.
The B code gives a male 10 mm rod thread, and the S code fits the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke sensing. In practice, plan on roughly 94 N of usable push at 0.5 MPa, which lifts about 8 kg vertically with a 2:1 margin. This model is discontinued: the current-production drop-in is the ACE20X90, and buyers should confirm the ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACP Compact Cylinder ACP20X90SB |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE20X90SB |
| Bore size | Ø20 mm |
| Stroke | 90 mm |
| Acting type | Double acting |
| 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 ACE20X90SB (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 ACE20X90SB produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×90 | Stroke length in mm. |
| 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).
The 157.1 N push at 0.5 MPa parts a finished bushing from its nest, while the 90 mm stroke clears the fixture and the -S magnet feeds a CMSE switch to the PLC.
About 8 kg of vertical lift capacity with a 2:1 margin seats vial caps or test plates, and the short body fits inside a compact guarding frame.
The male rod thread drives a knuckle-linked pusher arm that kicks small cartons sideways, with DMSE switches confirming both end positions at 30-500 mm/s.
For a 90 mm stroke in this force band, the 20 mm bore delivers 157.1 N push at 0.5 MPa; step down to a 16 mm bore (100.5 N) for lighter clamping or up to a 25 mm bore (245.4 N) when the load grows. Note that a plain cylinder drifts when air is lost - add a rod lock or pilot check valve if the load must stay put. The male rod thread suits I/Y knuckles, and FA/FB flange, LB foot or CA/CB clevis mounts bolt to the same face. Order the ACE20X90 as the current replacement for this discontinued model.
Replacement checklist
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. The theoretical maximum is 32 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, and speed spans 30-500 mm/s.
The short-body build saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA/FB flange, LB foot or CA/CB clevis mounts bolt straight to the face. The S code means the optional -S magnet is fitted, so CMSE or DMSE reed or solid-state switches can be mounted for position feedback. This model is discontinued; the ACE20X90 is the current drop-in - confirm ISO 21287 mounting dimensions before swapping.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE20X90SB replacement — usually within 7-8 hours.