This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE20X50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE20X50S 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 ACP Compact Cylinder ACP20X50S
The AirTAC Airtac ACP Compact Cylinder ACP20X50S is a double acting DIN-standard tight/compact air cylinder with a Ø20mm bore and 50mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE20X50S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke50 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM6×1.0
- StatusDiscontinued → ACE20X50S
- 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 ACP Compact Cylinder ACP20X50S
The ACP20X50S is a double acting DIN-standard compact cylinder with a 20 mm bore and 50 mm stroke, fitted with the optional -S magnet so CMSE or DMSE reed and solid-state switches can be mounted for end-of-stroke sensing. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, and the short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit.
Built around a hard-anodized aluminium body with covers threaded on and an S45C hard-chrome rod, it runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), from -20 to +70 C at 30-500 mm/s, with a fixed TPU bumper at each end. For planning, treat about 94 N (0.6 of the push force) as the usable working force at 0.5 MPa, which corresponds to lifting roughly 9 kg vertically - halve that to about 4-5 kg if you want a 2:1 margin on a real part weight. Note this model is discontinued: the current-production drop-in is the ACE20X50, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACP Compact Cylinder ACP20X50S Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP20X50S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE20X50S |
| Bore size | Ø20 mm |
| Stroke | 50 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 ACE20X50S (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 ACE20X50S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac ACP Compact Cylinder ACP20X50S
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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).
Where the Airtac ACP Compact Cylinder ACP20X50S Is Used
Small-parts press fit
Pressing dowel pins or bushings into plastic housings on an assembly bench, where the 157.1 N push at 0.5 MPa is enough and the short body fits under a low fixture plate.
Position-verified gating
Swinging or sliding a small gate on a packaging line with CMSE or DMSE switches confirming extend and retract, enabled by the -S magnet this model carries.
Light part lift-off
Lifting about 9 kg of components vertically from a conveyor stop at 0.5 MPa, or about 4-5 kg with a 2:1 safety margin on the same 20 mm bore.
Replacing the Airtac ACP Compact Cylinder ACP20X50S with the ACE20X50S
At 20 mm bore this sits in the light-actuation band: the 16 mm bore delivers 100.5 N push at 0.5 MPa while the 25 mm bore reaches 245.4 N, so step up if your mechanism needs more than about 94 N of practical working force. The 50 mm stroke is well inside the 100 mm maximum standard stroke for this bore. The rod end is female M6x1.0 with a PT port thread, and FA/FB flange, LB foot or CA/CB clevis mounts bolt to the standard face. A plain cylinder does not hold position when air is lost - add a rod lock or pilot check valve for a held load. Since the ACP20X50S is discontinued, order the ACE20X50 as the current equivalent and verify the ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACE20X50S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACP Compact Cylinder ACP20X50S FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa push rises to 219.9 N and pull to 164.9 N. The theoretical maximum is 32 kgf at 1.0 MPa. It is double acting, so air drives both directions, and it operates on 0.15-1.0 MPa (22-145 psi) filtered air at 30-500 mm/s.
Order the ACE20X50, the current-production ISO 21287 successor: swap the P for an E and you get the same 20 mm bore, 50 mm stroke and force class in a matching short body. Confirm the ISO 21287 mounting dimensions against your fixture first, since the ACP was built to the DIN standard. The -S magnet code carries over, so CMSE / DMSE switches still work.
Request a Quote for the ACE20X50S
Send us the quantity and destination. We confirm price, stock and lead time on the ACE20X50S replacement — usually within 7-8 hours.