
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 30mm 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.
The ACEJ12X30-10B is a double acting compact cylinder built to ISO 21287, with a 12 mm bore and a 30 mm stroke that an external stop screw trims by up to 10 mm on site, giving a usable extend range of 20-30 mm. The male rod thread (B code) on the 6 mm rod bolts straight into small tooling plates.
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures and guarded cells where a full-length body will not fit. The hard-anodized aluminium body carries a fixed TPU bumper at both ends, and the magnet is the optional -S code - this unit has none, so CMSE or DMSE switches cannot be fitted unless you order -S.
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 30 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| 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 |
ACEJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×30 | Stroke length in mm. |
| -10 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| 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 (double rod, 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.
Knocks small pressed or moulded parts off a nest on an assembly bench, where the 20-30 mm trimmed stroke clears the part without over-travel.
Applies light contact force to small PCBs or sensors in a go/no-go gauge; at 0.5 MPa the push stays gentle enough for delicate work.
Remember the stop screw only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the rod will drift if air is lost. FA flange or LB foot mounts and I/Y rod knuckles fit the ISO 21287 face; order the -S variant if you need position sensing.
Quick checklist
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push is 79.2 N and pull 59.4 N; theoretical maximum is 11.5 kgf at 1.0 MPa. The -10 code gives a 10 mm adjustment window: a stop screw on the front shortens the 30 mm extend stroke to any setting between 20 and 30 mm. It is an end stop only - on air loss the piston drifts, so it does not hold a load. Speed range is 30-500 mm/s and operating pressure is 0.15-1.0 MPa (22-145 psi).
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at each end and an M5x0.8 air port. Mounts include FA flange, LB foot and I/Y rod knuckles on the standard face. Position sensing needs the optional -S magnet code - this model (no S) has no magnet, so CMSE or DMSE switches cannot be detected until you order the -S variant.
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