This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X125S, the same code under the new prefix. 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 ACPD Double Rod Compact Cylinder ACPD20X125S
The AirTAC ACPD Double Rod Compact Cylinder ACPD20X125S is a double acting, double rod 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 ACED20X125S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM6×1.0
- StatusDiscontinued → ACED20X125S
- 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 ACPD Double Rod Compact Cylinder ACPD20X125S
A double acting compact cylinder with a rod leaving both covers, the ACPD20X125S pushes and pulls with identical output: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa in either direction, because both strokes work on the rod-side area. The 125 mm stroke is longer than the 100 mm standard limit for a 20 mm bore, so it is a made-to-order build. The S code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke signals.
The hard-anodized aluminium body with an S45C hard-chrome rod runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof tested to 1.5 MPa (215 psi), from -20 to +70 C at 30-500 mm/s. Fixed TPU bumpers sit at both ends. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which helps in tight gantries and fixture plates. Note this model is discontinued: the current direct is the ACED20X125, same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping. As a rule of thumb, plan on roughly 70 N (about 7 kgf) of usable work at 0.5 MPa rather than the full rating.
Airtac ACPD Double Rod Compact Cylinder ACPD20X125S Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X125S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X125S |
| Bore size | Ø20 mm |
| Stroke | 125 mm |
| Acting type | Double acting, double rod |
| 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 ACED20X125S (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 | Force (both ways) |
|---|---|
| 0.5 MPa | 118 N |
| 0.7 MPa | 165 N |
| Max (@1.0 MPa) | 24 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac ACPD Double Rod Compact Cylinder ACPD20X125S
| ACPD | DIN compact cylinder (double-rod, 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 (double rod, adjustable stroke).
Where the Airtac ACPD Double Rod Compact Cylinder ACPD20X125S Is Used
Reciprocating test fixture
The equal 117.8 N force in both directions at 0.5 MPa suits a push-pull leak or endurance test rig cycling a connector block, with CMSE switches on the fitted magnet confirming each end of the 125 mm travel.
Laboratory slide mechanism
The rear rod drives a sensor flag while the front rod pushes sample trays between two stations on a lab bench, the 30-500 mm/s speed range matching gentle handling at 0.15-1.0 MPa (22-145 psi).
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD20X125S with the ACED20X125S
At 20 mm bore the through-rod gives 117.8 N both ways at 0.5 MPa. If your jig needs more, step up to the 25 mm bore at 206.2 N; if less force and a shorter body work, the 16 mm bore delivers 75.4 N. The through-rod resists rotation and side load, and the rear rod can carry a sensor flag - handy on this longer 125 mm stroke. Because a plain double-rod cylinder drifts when air is lost, add a rod lock or pilot check if the load must stay put. FA/FB flange and LB foot mountings bolt to the standard face, and this unit already carries the optional -S magnet for CMSE / DMSE switches. Order the ACED20X125 as the current-production replacement and verify the ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACED20X125S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACPD Double Rod Compact Cylinder ACPD20X125S FAQ
Because a rod exits both covers, force is equal both ways: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa, on the rod-side area. The maximum rating at 1.0 MPa is 24.0 kgf. Operating range is 0.15-1.0 MPa (22-145 psi) with proof pressure of 1.5 MPa (215 psi), speed 30-500 mm/s. The 125 mm stroke is non-standard for a 20 mm bore (standard limit 100 mm), so it is made to order, and the model is discontinued - the ACED20X125 is the current replacement.
The S in the code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches mount directly on the hard-anodized aluminium body. FA/FB flange and LB foot brackets bolt to the standard ISO 21287-class face, and the female M6x1.0 rod thread with M5x0.8 ports keeps plumbing simple. Fixed TPU bumpers decelerate the piston at each end but do not hold a load when air is lost - use a rod lock or pilot check for that. Before switching to the ACED20X125, confirm the ISO 21287 mounting dimensions.
Related AirTAC ACE Cylinders
Request a Quote for the ACED20X125S
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X125S replacement — usually within 7-8 hours.