This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X55, 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 ACPD20X55
The AirTAC ACPD Double Rod Compact Cylinder ACPD20X55 is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 55mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X55 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke55 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM6×1.0
- StatusDiscontinued → ACED20X55
- 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 ACPD20X55
A double acting compact cylinder with a rod leaving both covers, the ACPD20X55 delivers 117.8 N in each direction at 0.5 MPa (164.9 N at 0.7 MPa), because both strokes work on the rod-side area. The through-rod resists rotation and light side load, and the rear rod can carry a sensor flag. Its hard-anodized aluminium body with an S45C hard-chrome rod runs at 0.15-1.0 MPa (22-145 psi) and 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 guarding. Note this model is discontinued: order the current ACED20X55 and confirm the ISO 21287 mounting dimensions before swapping. The magnet is not fitted; order the -S code if you need CMSE / DMSE switches.
Airtac ACPD Double Rod Compact Cylinder ACPD20X55 Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X55 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X55 |
| Bore size | Ø20 mm |
| Stroke | 55 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 ACED20X55 (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 ACPD20X55
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×55 | 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 ACPD20X55 Is Used
Push-pull stamping of connector housings
A 55 mm through-rod presses a small terminal into a plastic housing, then retracts with the same 117.8 N at 0.5 MPa to clear the die - one cylinder, no return spring needed.
Reciprocating flag on a packaging line
The rear rod carries a sensor flag while the front rod toggles a gate, so CMSE / DMSE switches (with the optional -S magnet) read position from one compact body.
Symmetric transfer in a jig fixture
Both rod ends mount I/Y knuckles to lift a fixture plate squarely, and the short body fits under the jig plate where a full-length profile cylinder would not.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD20X55 with the ACED20X55
For a 55 mm stroke needing equal push and pull, the 20 mm bore gives 117.8 N both ways at 0.5 MPa; size down to the 16 mm bore (75.4 N) for lighter clamps or up to the 25 mm bore (206.2 N) if the load grows. The piston drifts when air is lost, so add a rod lock or pilot check for held loads. Female M6x1.0 rod thread is standard here; FA/FB flange or LB foot mounts bolt to the ISO 21287 face. This unit is discontinued - the ACED20X55 is the current direct, so verify mounting dimensions first.
Replacement checklist
- ✓ Current-production ACE → ACED20X55
- ✓ 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 ACPD20X55 FAQ
Being double-rod, force is equal both ways: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa, with a maximum of 24.0 kgf at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um, 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, with FA/FB flange or LB foot mounting and an M5x0.8 port. The ACPD family is discontinued; the current-production ACED20X55 is the direct successor in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before ordering.
Request a Quote for the ACED20X55
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X55 replacement — usually within 7-8 hours.