This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE20X125S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE20X125S 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 ACP20X125S
The AirTAC Airtac ACP Compact Cylinder ACP20X125S 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 ACE20X125S (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 → ACE20X125S
- 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 ACP20X125S
The ACP20X125S is a double acting compact cylinder in the DIN-standard ACP series, with a 20 mm bore, a 125 mm stroke and a 10 mm hard-chrome S45C piston rod inside a hard-anodized aluminium body. Air drives the rod in both directions, and fixed TPU bumpers sit at each end. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those figures rise to 219.9 N and 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa. The 125 mm stroke is longer than the 100 mm standard limit for this bore, so it is a made-to-order build.
Because the short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into narrow fixtures, slide assemblies and guarding where a full-length body cannot. The S in the code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped straight onto the tube for end-of-stroke sensing. As a rule of thumb, plan on roughly 94 N of usable push at 0.5 MPa, which lifts about 8 kg vertically - halve that for a 2:1 margin on real part weights. This model is discontinued; the current-production replacement is the ACE20X125, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACP Compact Cylinder ACP20X125S Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP20X125S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE20X125S |
| 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 ACE20X125S (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 ACE20X125S 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 ACP20X125S
| 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 ACP20X125S Is Used
Compact jig clamping
The 157.1 N push at 0.5 MPa clamps small aluminium brackets or plastic housings in drilling and tapping jigs, and the short body fits where a full-profile cylinder will not.
Sensed slide positioning
With the -S magnet fitted, CMSE or DMSE switches confirm end positions on a 125 mm parts-feed or gating slide, keeping PLC logic simple on assembly machines.
Light vertical lift
About 8 kg of vertical lift capacity at 0.5 MPa suits lowering small chutes, sensor arms or test probes over the 125 mm made-to-order stroke.
Replacing the Airtac ACP Compact Cylinder ACP20X125S with the ACE20X125S
At 20 mm bore this sits between the 16 mm size (100.5 N push at 0.5 MPa) and the 25 mm size (245.4 N push at 0.5 MPa) - step up if your tooling needs more than about 94 N of practical working force. The 125 mm stroke exceeds the 100 mm standard maximum for bore 20, so order it as a non-standard made-to-order length. Female M6x1.0 rod thread and M5x0.8 ports; FA/FB flange, LB foot or CA/CB clevis mountings bolt to the same face. Since a plain cylinder drifts when air is lost, add a rod lock or pilot check valve for held loads. Order the ACE20X125 as the current drop-in successor.
Replacement checklist
- ✓ Current-production ACE → ACE20X125S
- ✓ 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 ACP20X125S 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 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, on air filtered to 40 um. The 125 mm stroke is non-standard for this bore (standard maximum 100 mm) and is made to order.
The S code means the optional -S magnet is fitted on this unit, so CMSE or DMSE reed or solid-state switches mount directly on the tube for stroke-end detection. The ACP family is discontinued; the current-production replacement is the ACE20X125 in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before you swap.
Related AirTAC ACE Cylinders
Request a Quote for the ACE20X125S
Send us the quantity and destination. We confirm price, stock and lead time on the ACE20X125S replacement — usually within 7-8 hours.