This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X125B, 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 ACPD20X125B
The AirTAC ACPD Double Rod Compact Cylinder ACPD20X125B 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 ACED20X125B (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 → ACED20X125B
- 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 ACPD20X125B
A double acting compact cylinder with a rod leaving both covers, the ACPD20X125B pushes and pulls with identical output: 117.8 N at 0.5 MPa in either direction, rising to 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, gives a symmetric mounting point at each end, and the rear rod can carry a sensor flag. A fixed TPU bumper sits in both covers, and travel speed spans 30-500 mm/s.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into narrow fixtures and guarding. Note the 125 mm stroke is beyond the 100 mm standard maximum for this bore, so it is made to order. This model is discontinued; the current-production direct is ACED20X125, and buyers should confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPD Double Rod Compact Cylinder ACPD20X125B Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X125B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X125B |
| 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 ACED20X125B (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 ACPD20X125B
| 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 ACPD20X125B Is Used
Reciprocating transfer slide
The equal 117.8 N push and pull at 0.5 MPa drives a small parts shuttle at the same speed both ways, with the through-rod keeping the carrier square over the 125 mm travel.
Two-flag position checking
With rods at both covers, a fixture builder can flag each end of the stroke; order the -S magnet version to read the positions with CMSE or DMSE switches.
Compact ejection in a machining jig
The short body, about 50% shorter than an ISO 15552 profile cylinder, ejects finished aluminum blanks from a tight milling fixture where a full-length body will not fit.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD20X125B with the ACED20X125B
At 20 mm bore this sits between the 16 mm size (75.4 N at 0.5 MPa) and the 25 mm size (206.2 N at 0.5 MPa); step up if your tooling needs more than about 70 N of real working force. The 125 mm stroke is a non-standard, made-to-order length since bore 20 tops out at 100 mm standard. This unit has a male rod thread (B code) and no magnet, so position switches cannot be fitted; order the -S variant if CMSE or DMSE switches are planned. A plain double-rod cylinder drifts when air is lost, so add a rod lock or pilot check for held loads. For new designs, specify the ACED20X125 instead, confirming ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACED20X125B
- ✓ 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 ACPD20X125B FAQ
Yes, identical both ways because a rod exits each cover and both strokes use the rod-side area: 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. Operating range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, air filtered to 40 um.
It is a short-body compact cylinder with a hard-anodized aluminum body, an S45C hard-chrome 10 mm rod on both ends, M5x08 ports (written M5x0.8) and a fixed TPU bumper at each end that only decelerates the stroke ends. FA/FB flange or LB foot mounts bolt to the standard face. The model is discontinued; the current-production successor is ACED20X125 in the same bore, stroke and force class - confirm ISO 21287 mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACED20X125B
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X125B replacement — usually within 7-8 hours.