This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE20X20B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE20X20B 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 ACP20X20B is a double acting DIN-standard tight/compact air cylinder with a Ø20mm bore and 20mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE20X20B (ISO 21287 ACE), in the same bore, stroke and force class.
The ACP20X20B is a double acting DIN-standard compact cylinder with a 20 mm bore and a short 20 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 157.1 N and pulls 117.8 N; at 0.7 MPa those rise to 219.9 N and 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa. The male rod thread (B code) bolts straight to standard fixtures. This model is discontinued; the current-production drop-in is the ISO 21287 ACE20X20, so confirm mounting dimensions before swapping.
The short ISO 21287 body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and guarding where a full-length body will not fit. For real work, plan on about 94 N (roughly 9.6 kg of thrust) rather than the full 157.1 N rating, and expect about 8 kg of vertical lift with a 2:1 margin. Operating range is 0.15-1.0 MPa (22-145 psi) with speeds of 30-500 mm/s. Note there is no magnet fitted: order the optional -S code if you need CMSE or DMSE switch sensing.
| Model | Airtac ACP Compact Cylinder ACP20X20B |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE20X20B |
| Bore size | Ø20 mm |
| Stroke | 20 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 ACE20X20B (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 ACE20X20B 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. |
| ×20 | 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 is enough to hold small aluminium or plastic workpieces in drilling and tapping jigs, and the 20 mm stroke keeps the fixture footprint minimal.
With about 9.6 kg of usable thrust, this cylinder can divert lightweight cartons or blister packs off a packaging line conveyor at up to 500 mm/s.
The short 20 mm stroke and M5x0.8 port make it a neat fit for sliding covers or sample trays on compact test and inspection equipment.
At 157.1 N push (0.5 MPa), the 20 mm bore sits between the 16 mm (100.5 N) and 25 mm (245.4 N) options; step up to 25 mm if your part weight or clamp force has grown. The 20 mm stroke is well inside the 100 mm maximum standard stroke for this bore, so it is a catalogue item. Choose the B male rod thread for knuckle or tooling attachment, and add FA/FB flange, LB foot or CA/CB clevis mounting to match your fixture. Remember a plain cylinder drifts when air is lost, so use a rod lock or pilot check valve for held loads. For new designs, specify the ACE20X20 instead.
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 pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, and speed 30-500 mm/s. It is double acting with a fixed TPU bumper at both ends.
Order the ACE20X20, the current-production ISO 21287 successor: swap the P for an E and you get the same 20 mm bore, 20 mm stroke and force class in a matching short body. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions before swapping. The ACE family also covers related types such as ASP/ATP, ACPD and ACPJ.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE20X20B replacement — usually within 7-8 hours.