
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED20X40SB is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø20mm bore and 40mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. Its short compact envelope saves about 50% of the mounting length of an ISO 15552 profile cylinder.
A double acting compact actuator built to ISO 21287, the ACED20X40SB has a piston rod leaving both covers, so the 20 mm bore delivers the same 117.8 N at 0.5 MPa (164.9 N at 0.7 MPa) in either direction - both strokes work on the rod-side area. The male rod thread (B code) bolts straight into tooling, and the through-rod resists rotation and carries side load better than a single-ended design. The S in the code means the optional -S magnet is fitted, so CMSE / DMSE reed or solid-state switches can be clipped to the body slots for end-of-stroke signalling.
The hard-anodized aluminium body with a roller-burnished bore and an S45C hard-chrome plated rod shrugs off wear in high-cycle work, while fixed TPU bumpers at each end soak up end-of-stroke shock. Because the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight fixtures and guarding. Speed range is 30-500 mm/s across 0.15-1.0 MPa (22-145 psi). As a rule of thumb, plan on about 70 N of usable push at 0.5 MPa, which lifts roughly 6 kg vertically with a 2:1 margin.
| Model | Airtac ACED Double-acting Compact Cylinder ACED20X40SB |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 40 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 TPU bumper (both ends) |
| Max standard stroke | Up to 100 mm |
Specifications follow the official AirTAC ACE-series (ISO 21287) datasheet. Body: hard-anodized aluminium alloy; piston rod: S45C carbon steel with hard-chrome plating. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G. A built-in magnet is OPTIONAL — add the -S code to fit CMSE / DMSE position sensors.
| 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).
| ACED | ISO 21287 compact cylinder (double-rod). |
|---|---|
| 20 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| S | Optional built-in magnet for CMSE / DMSE sensors (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
ACE-family variants: ACE (double acting), ASE / ATE (single acting push / pull), ACED (double rod), ACEJ (adjustable stroke), TACE / TACED (non-rotating twin-guide yoke). Mounting accessories: FA / FB flange, LB foot, CA / CB clevis, CR, SDB pivot, FTC; plus I and Y knuckles. Thread PT (blank) / G.
The through-rod lets a jig clamp from either side with identical 117.8 N force, so one cylinder serves two opposing clamp points on a machining fixture.
With the fitted -S magnet, CMSE or DMSE switches on the body slots confirm extend and retract on a 40 mm stroke in an assembly press station.
About 6 kg of vertical lift capability at a 2:1 margin suits small vial or sample trays on a short-stroke slide inside tight instrument guarding.
At 117.8 N per side at 0.5 MPa, the 20 mm bore sits between the 16 mm (75.4 N) and 25 mm (206.2 N) versions - step down for light pick-and-place, up if your part mass or friction load approaches 70 N of real work. Note that a plain double-rod cylinder drifts when air is lost; add a rod lock or pilot check if the load must stay put. The 40 mm stroke is well inside the 100 mm standard for this bore, and FA/FB flange, LB foot, CA/CB clevis and FTC brackets bolt to the ISO 21287 face.
Quick checklist
Being double-rod, force is equal in both directions: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa per stroke, 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, port M5x0.8, rod 10 mm with male thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits shallow gantries and guards. This model carries the optional -S magnet, so CMSE / DMSE switches mount in the body slots. Fixed TPU bumpers decelerate the piston at both stroke ends, and FA/FB flange, LB foot, CA/CB clevis or FTC brackets bolt to the standard face.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.