This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE20X50B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE20X50B 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 ACP20X50B
The AirTAC Airtac ACP Compact Cylinder ACP20X50B 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 ACE20X50B (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 → ACE20X50B
- 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 ACP20X50B
The ACP20X50B is a double acting compact cylinder in the DIN-standard ACP series, with a 20 mm bore and 50 mm stroke. It pushes with 157.1 N and pulls with 117.8 N at 0.5 MPa, rising to 219.9 N on the extend stroke at 0.7 MPa. The B code gives a male rod thread on the 10 mm rod, and the port is M5x0.8. Its hard-anodized aluminium body with an S45C hard-chrome rod runs on 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s, with a fixed TPU bumper at each end.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and sliding guards. At 0.5 MPa the extend force of 157.1 N means roughly 94 N of usable work after a 40% margin, which lifts about 8 kg vertically - or about 4 kg with a 2:1 safety factor. Note this model is discontinued: the current-production drop-in is ACE20X50, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACP Compact Cylinder ACP20X50B Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP20X50B |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE20X50B |
| 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 ACE20X50B (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 ACE20X50B 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 ACP20X50B
| 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 ACP20X50B Is Used
Small-part press fitting
Presses dowel pins or bushings into aluminium housings on an electronics assembly bench, where 157.1 N at 0.5 MPa is enough for light interference fits.
Sliding guard actuation
Opens and closes a machine-tool safety guard inside a tight enclosure, using the short body that saves about 50% of the length of an ISO 15552 profile cylinder.
Light part lift-off
Lifts about 8 kg of machined caps off a nesting fixture at the end of a pick station, with the male rod thread bolted to a knuckle on the tool plate.
Replacing the Airtac ACP Compact Cylinder ACP20X50B with the ACE20X50B
For a 50 mm stroke around 157 N of push, bore 20 is the right size; step down to bore 16 (100.5 N push at 0.5 MPa) for lighter clamping or up to bore 25 (245.4 N) if the load may grow. The male rod thread suits direct attachment to I/Y knuckles on the ISO 21287 mounting face. If you need position feedback, order the -S variant, which carries the optional magnet for CMSE / DMSE switches - this B-coded unit has no magnet. Remember the piston drifts when air is lost, so add a rod lock or pilot check valve for held loads. Order ACE20X50 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ACE20X50B
- ✓ 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 ACP20X50B FAQ
Push is 157.1 N and pull 117.8 N at 0.5 MPa; at 0.7 MPa push rises to 219.9 N and pull to 164.9 N. Theoretical maximum is 32 kgf at 1.0 MPa. It is double acting with a 20 mm bore, 50 mm stroke, 10 mm male-thread rod, M5x0.8 port, 0.15-1.0 MPa (22-145 psi) working pressure, 1.5 MPa (215 psi) proof pressure, -20 to +70 C temperature range and 30-500 mm/s speed. It is discontinued; ACE20X50 is the current replacement.
The short ISO 21287-class body cuts mounting length by about 50% versus an ISO 15552 profile cylinder, and FA/FB flange, LB foot or CA/CB clevis mounts bolt straight to its face. Position sensing is not fitted on this code: the magnet is the optional -S order code, which enables CMSE or DMSE reed and solid-state switches. Without -S there is no magnet, so no switch can be mounted.
Request a Quote for the ACE20X50B
Send us the quantity and destination. We confirm price, stock and lead time on the ACE20X50B replacement — usually within 7-8 hours.