
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED40X70SB is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø40mm bore and 70mm stroke, 1/8" 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 ACED40X70SB pushes a 40 mm bore through a 70 mm stroke with a rod leaving BOTH covers. Because each side sees the rod-side area, output is a matched 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa in either direction. The male-threaded rod end (B code) bolts straight into standard tooling, and the fitted -S magnet lets CMSE or DMSE switches report position along the body slots.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight guards and gantry fixtures. In practice, plan on roughly 343 N (about 35 kg of push) for real work at 0.5 MPa, and expect around 29 kg of vertical lifting capability with a 2:1 margin. A fixed TPU bumper at each end absorbs end-of-stroke shock, the hard-anodized aluminium body resists wear, and the S45C hard-chrome through-rod shrugs off rotation and light side load.
| Model | Airtac ACED Double-acting Compact Cylinder ACED40X70SB |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 70 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 200 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 | 572 N |
| 0.7 MPa | 800 N |
| Max (@1.0 MPa) | 117 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). |
|---|---|
| 40 | 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.
Equal 571.8 N force from both rod ends clamps a machined aluminium housing from two sides on a CNC fixture, keeping the part centered without a second cylinder.
The rear rod on a packaging line pusher carries a flag past a CMSE switch (enabled by the fitted -S magnet), confirming each 70 mm stroke on cartons up to about 35 kg equivalent load.
A small bench-top sample press uses the 800.5 N at 0.7 MPa output to seat test coupons, with the through-rod resisting the side load of off-center parts.
At 571.8 N per direction, this 40 mm unit sits between the 32 mm bore (345.6 N) and the 50 mm bore (881.2 N) - pick the 32 mm for lighter clamping, the 50 mm when you need over 880 N. Remember the piston drifts if air is lost; add a rod lock or pilot check for a held load. FA/FB flange, LB foot and FTC brackets mount on the ISO 21287 face, and the 70 mm stroke sits well inside the 200 mm standard limit for this bore.
Quick checklist
Output is equal both ways because a rod exits each cover and both strokes use the rod-side area: 571.8 N at 0.5 MPa, 800.5 N at 0.7 MPa, and up to 116.6 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, air filtered to 40 um, temperature -20 to +70 C.
S means the optional -S magnet is fitted on this model, so CMSE or DMSE reed or solid-state switches can be clipped into the body slots; without -S there is no magnet. B means a male rod thread (the blank version is female). The 1/8" port depends on the 40 mm bore, FA/FB flange, LB foot and FTC brackets bolt to the ISO 21287 face, and the fixed TPU bumpers at both ends absorb end-of-stroke impact.
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