
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED12X20SB is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø12mm bore and 20mm 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 ACED12X20SB pushes a 6 mm rod out of BOTH covers, so its 12 mm bore delivers 42.4 N at 0.5 MPa in either direction - both strokes work on the rod-side area. The 20 mm stroke suits short-retract pick-and-place heads where every millimetre of length counts: the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder. The male rod thread (B code) takes I or Y knuckles directly.
The hard-anodized aluminium body carries a roller-burnished bore, the S45C hard-chrome-plated rod resists wear, and a fixed TPU bumper absorbs end-of-stroke shock at each cover. Because the S magnet is fitted in this model, CMSE or DMSE reed and solid-state switches can be clipped into the body slots for end-of-stroke signalling. Running on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), it cycles at 30-500 mm/s between -20 and +70 C. As a rule of thumb, plan on roughly 25 N (about 2.6 kg of vertical lift with a 1.67:1 margin) of usable work at 0.5 MPa rather than the full 42.4 N rating.
| Model | Airtac ACED Double-acting Compact Cylinder ACED12X20SB |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 20 mm |
| Acting type | Double acting, double rod |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| 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 50 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 | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 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). |
|---|---|
| 12 | Bore size in mm. |
| ×20 | 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 42.4 N push and pull clears a finished 10 mm pin from a CNC jig; the back rod can carry a work-present flag while the front rod ejects.
With the -S magnet fitted, CMSE switches confirm the 20 mm probe stroke on a PCB test rig; 59.4 N at 0.7 MPa gives consistent contact pressure both ways.
Equal force in both directions drives a small sorting gate left and right on a conveyor line at up to 500 mm/s, with the TPU bumper quieting each reversal.
At 42.4 N @0.5 MPa this 12 mm bore is the lightest in the ACED range; step up to ACED16X20SB for 75.4 N or drop to the smallest single-rod ACE if a through-rod is not needed. The 20 mm stroke sits well inside the 50 mm maximum standard stroke for bore 12, so it ships as a catalogue item. Match FA/FB flange or LB foot brackets to the ISO 21287 face, and remember the cylinder drifts if air is lost - add a rod lock or pilot check valve where a load must stay put.
Quick checklist
Because a rod exits both covers, force is identical in both directions: 42.4 N at 0.5 MPa and 59.4 N at 0.7 MPa, on the rod-side area. The maximum rating for the 12 mm bore is 8.6 kgf at 1.0 MPa. For sizing, treat about 25 N (roughly 2.6 kg vertical) as the practical working force at 0.5 MPa.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, ideal for tight guards and gantries. FA/FB flanges, LB foot and FTC brackets plus I and Y rod knuckles mount on the standard face. The male rod thread (B code) and PT ports (M5x0.8 on this bore) are ready to plumb, and the fitted -S magnet accepts CMSE / DMSE switches.
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