
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED20X70B is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø20mm bore and 70mm 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 cylinder built to ISO 21287, the ACED20X70B has a 20 mm bore and 70 mm stroke with a piston rod leaving BOTH covers. Because each side works on the rod-side area, output is a matched 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa in either direction - no push/pull mismatch to compensate for. The male rod thread (B code) on both ends bolts straight to tooling, and the through-rod resists rotation and light side load while the free rear rod can carry a sensor flag.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit. A hard-anodized aluminium body with a hard-chrome plated S45C rod runs at 0.15-1.0 MPa (22-145 psi) and 30-500 mm/s, with a fixed TPU bumper at each end. Plan on roughly 70 N of usable work at 0.5 MPa, which is about 6 kg of vertical lift with a 2:1 margin. Note: no magnet is fitted on this code - order the -S variant if you need CMSE / DMSE switch sensing.
| Model | Airtac ACED Double-acting Compact Cylinder ACED20X70B |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 70 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. |
| ×70 | 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 symmetric 117.8 N clamp in both directions and male-threaded rod ends make ACED20X70B easy to fixture on milling jigs where a 70 mm stroke is enough to clear the part.
Equal force both ways suits reciprocating pushers that sort or divert bottles and cartons; the through-rod keeps the pusher plate square under light side load.
With about 6 kg of vertical lift at a 2:1 margin, this cylinder raises microplate stacks and sample trays inside compact analyser frames where body length is critical.
At 117.8 N per direction this 20 mm bore suits light clamping and transfer work; step down to the 16 mm bore (75.4 N at 0.5 MPa) for smaller loads or up to the 25 mm bore (206.2 N) when you need roughly 75% more force in the same compact family. The 70 mm stroke sits well inside the 100 mm maximum standard stroke for this bore, so it ships as a catalogue item. Like any plain double-rod cylinder it will drift if air is lost - add a rod lock or pilot check valve where a load must stay put. FA/FB flanges, LB feet, FTC brackets and I/Y rod knuckles mount on the ISO 21287 face, and the male thread on both rod ends simplifies fixture attachment.
Quick checklist
Because a rod exits both covers, force is identical in each direction: 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) and speed is 30-500 mm/s. For real work, budget roughly 70 N per direction at 0.5 MPa.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper decelerating the piston at each end. This ACED20X70B code has no magnet fitted; order the -S version to enable CMSE or DMSE switches in the body slots. Mounting options include FA/FB flange, LB foot, FTC and I/Y rod knuckles.
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