
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ16X35-20SB is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø16mm bore and 35mm 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 ACEJ16X35-20SB is a double acting ISO 21287 compact cylinder with a 16 mm bore and a 35 mm stroke that an external stop screw trims down by up to 20 mm, giving a usable extend range of 15-35 mm. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N, rising to 140.7 N on the extend stroke at 0.7 MPa. Its short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures where a full-length body cannot.
This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be clamped anywhere along the body for end-of-stroke sensing, and the B code gives a male rod thread on the 8 mm rod. A fixed TPU bumper at each end absorbs end-of-stroke shock, the hard-anodized aluminium body runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), and speed spans 30-500 mm/s.
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X35-20SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 35 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 75 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 | 75 N |
| 0.7 MPa | 106 N |
| Max (@1.0 MPa) | 15 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). |
|---|---|
| 16 | Bore size in mm. |
| ×35 | Stroke length in mm. |
| -20 | 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.
The male-threaded 8 mm rod takes a custom tuck pad, and the short ISO 21287 body fits inside tight guarding beside the sealing head.
The 20 mm window means you can dial the extend stroke anywhere between 15 and 35 mm on site, but the stop screw is a mechanical end stop only - on air loss the piston drifts, so do not treat it as a load-holding lock. FA flange, LB foot and I/Y rod knuckles bolt to the ISO 21287 face, and the fitted -S magnet lets CMSE / DMSE switches report position.
Quick checklist
Theoretical maximum is 20.5 kgf at 1.0 MPa. The 35 mm stroke is trimmed by the stop screw within the 20 mm window, so the extend range is 15-35 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, port M5x0.8, rod 8 mm with male thread.
It is an ISO 21287 compact cylinder with a hard-anodized aluminium body and S45C hard-chrome-plated rod, about 50% shorter in mounting length than an ISO 15552 profile cylinder. A fixed TPU bumper at each end absorbs end-of-stroke shock. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount along the body, and FA flange, LB foot or I/Y knuckle hardware bolts straight to the standard face.
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