This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X125SB, 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 ACPD20X125SB
The AirTAC ACPD Double Rod Compact Cylinder ACPD20X125SB 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 ACED20X125SB (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 → ACED20X125SB
- 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 ACPD20X125SB
A double acting compact cylinder with a rod through both covers, the discontinued ACPD20X125SB pushes and pulls with equal force because both strokes work on the rod-side area: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa in either direction. The 20 mm bore drives a 10 mm rod on each end, fed through M5x0.8 ports, and the 125 mm stroke is longer than the 100 mm standard for this bore, so it is a made-to-order build. The through-rod resists rotation and side load and gives a symmetric mount, while the back-end rod can carry a sensor flag.
The hard-anodized aluminium body with an S45C hard-chrome rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and gantries. The S in the code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped on for position feedback. This model is discontinued: the current-production replacement is the ACED20X125, and you should confirm the ISO 21287 mounting dimensions before swapping.
Airtac ACPD Double Rod Compact Cylinder ACPD20X125SB Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X125SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X125SB |
| 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 ACED20X125SB (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 ACPD20X125SB
| 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 ACPD20X125SB Is Used
Symmetric test fixture actuation
Equal 117.8 N force in both directions suits a QC press that clamps a PCB fixture down and retracts with identical force, keeping clamp pressure repeatable.
Flag-driven position feedback
The rear rod carries a sensor flag past DMSE solid-state switches, giving two-point confirmation on a compact packaging machine slide where length is limited.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD20X125SB with the ACED20X125SB
Size both ways: if 117.8 N at 0.5 MPa is more than your job needs, the bore 16 ACPD gives 75.4 N; if you need more, step up to bore 25 for 206.2 N, all equal in push and pull thanks to the double rod. Remember the piston drifts when air is lost, so add a rod lock or pilot check if the load must stay put. The male rod thread (B code) suits I/Y rod knuckles, and FA/FB flange or LB foot mounts bolt to the ISO 21287 face. Order the ACED20X125 as the current direct and verify its mounting dimensions against your fixture.
Replacement checklist
- ✓ Current-production ACE → ACED20X125SB
- ✓ 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 ACPD20X125SB FAQ
It is a double-rod cylinder, so output is equal both ways: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa on each stroke, with a maximum of 24.0 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, and the fixed TPU bumper decelerates at both ends. The 125 mm stroke exceeds the 100 mm standard for bore 20, so it is made to order.
Yes, the S code means the optional -S magnet is fitted on this unit, so CMSE or DMSE reed and solid-state switches can be mounted for position sensing; models without the S code carry no magnet. The ACPD family is discontinued, and the current-production replacement is the ACED20X125 in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACED20X125SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X125SB replacement — usually within 7-8 hours.