
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X75-50S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø63mm bore and 75mm 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.
The ACEJ63X75-50S is a double acting ISO 21287 compact cylinder with a 63 mm bore and a 75 mm stroke that an external stop screw can trim by up to 50 mm, giving a usable extend range of 25-75 mm. At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N, rising to 2182.1 N at 0.7 MPa. The hard-anodized aluminium body and S45C hard-chrome plated rod run on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), with a speed range of 30-500 mm/s.
Because the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into clamping fixtures and gantries where a full-length cylinder cannot reach. Plan on roughly 935 N (about 95 kg) of real working push at 0.5 MPa, which lifts about 79 kg vertically even after halving for a 2:1 margin. Fixed TPU bumpers absorb end-of-stroke energy at both ends, and the fitted -S magnet lets CMSE or DMSE switches report position along the body's magnet slots.
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X75-50S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø63 mm |
| Stroke | 75 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 250 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | 2041 N |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 63 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -50 | 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 (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 1558.6 N push at 0.5 MPa seats automotive bushings in aluminium housings, with the 50 mm window letting one cylinder serve several housing depths.
Short-body clamping of brackets on a robotic weld line, where the compact footprint fits between fixture rails and CMSE switches confirm clamp closure.
Swinging or lifting gates on a warehouse palletizing conveyor, where the 25-75 mm adjustable extend range matches different gate stops.
At this force class the 63 mm bore sits between the 50 mm bore (981.7 N push at 0.5 MPa) and the 80 mm bore (2513.3 N push at 0.5 MPa), so pick 63 mm when 50 mm is marginal but 80 mm is oversized. The stop screw only shortens the extend stroke and is a mechanical end stop, not a mid-stroke lock, so the rod will still drift if air is lost. FA flange, LB foot and FTC brackets plus I/Y rod knuckles bolt to the ISO 21287 face; the female M10x1.5 rod thread and 1/8" PT ports suit standard tooling plates.
Quick checklist
Bore is 63 mm with a 75 mm stroke adjustable down to 25 mm via the -50 window. Push is 1558.6 N and pull 1458.1 N at 0.5 MPa; at 0.7 MPa push is 2182.1 N and pull 2041.3 N. Theoretical maximum is 317.9 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, ports 1/8" PT, rod thread female M10x1.5.
An external stop screw shortens the extend stroke on site anywhere within the ordered 50 mm window; it cannot lengthen the stroke past 75 mm and it does not hold a load if air is lost. This model carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches can be clipped into the body's magnet slots for end-of-stroke or mid-range detection.
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