This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE20X125B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE20X125B 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 ACP20X125B
The AirTAC Airtac ACP Compact Cylinder ACP20X125B is a double acting DIN-standard tight/compact air cylinder with a Ø20mm bore and 125mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE20X125B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM6×1.0
- StatusDiscontinued → ACE20X125B
- 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 ACP20X125B
The ACP20X125B is a double acting DIN-standard compact cylinder with a 20 mm bore and a 125 mm male-thread rod stroke. Air drives the piston both ways, a fixed TPU bumper sits at each end, and the hard-anodized aluminium body carries an S45C hard-chrome rod. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N push at 0.7 MPa, with a theoretical peak of 32 kgf at 1.0 MPa. Note the 125 mm stroke exceeds the 100 mm standard limit for this bore, so it is a made-to-order build.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and guarded stations. As a rule of thumb, plan on roughly 94 N of usable push at 0.5 MPa - about 9 kg of vertical lift with a 2:1 margin. This model is discontinued; the current-production replacement is the ACE20X125, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACP Compact Cylinder ACP20X125B Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP20X125B |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE20X125B |
| Bore size | Ø20 mm |
| Stroke | 125 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 ACE20X125B (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 ACE20X125B 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 ACP20X125B
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | 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 ACP20X125B Is Used
Compact jig clamping
The short body fits inside a drill or assembly jig where a full-length profile cylinder would not, delivering 157.1 N of push at 0.5 MPa on the 125 mm stroke.
Small parts ejection
A 9 kg vertical-lift class at 0.5 MPa with a 2:1 margin suits ejecting stamped brackets or moulded caps from a die on a press line.
Guarded divert stations
On packaging conveyors, the 125 mm male-thread rod stroke pushes cartons off a belt inside a tight guarding envelope, with CMSE switches when the -S magnet is ordered.
Replacing the Airtac ACP Compact Cylinder ACP20X125B with the ACE20X125B
Size the bore by force: if 157.1 N push at 0.5 MPa is marginal, step up to the 25 mm bore (245.4 N); if it is generous, the 16 mm bore (100.5 N) may suffice. Remember a plain ACP drifts when air is lost - add a rod lock or pilot check valve for held loads. The B code gives a male rod thread, PT ports, and FA/FB flange, LB foot or CA/CB clevis mounting. The optional -S magnet enables CMSE / DMSE switches; without it no sensor can be fitted. This unit is discontinued - order the ACE20X125 as the drop-in successor.
Replacement checklist
- ✓ Current-production ACE → ACE20X125B
- ✓ 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 ACP20X125B FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa, 219.9 N push and 164.9 N pull; theoretical maximum is 32 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, speed 30-500 mm/s. The model is discontinued; the ACE20X125 is the current ISO 21287 drop-in - confirm mounting dimensions before swapping.
The 125 mm stroke exceeds the 100 mm standard maximum for the 20 mm bore, so this cylinder is made to order. The B code gives a male rod thread on the 10 mm rod, with a PT port (M5x0.8) and FA/FB flange, LB foot or CA/CB clevis mounting. The fixed TPU bumpers only decelerate at stroke ends - they never hold a load.
Related AirTAC ACE Cylinders
Request a Quote for the ACE20X125B
Send us the quantity and destination. We confirm price, stock and lead time on the ACE20X125B replacement — usually within 7-8 hours.