
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X60-20S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø63mm bore and 60mm 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 ACEJ63X60-20S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 60 mm stroke by up to 20 mm, giving a usable range of 40-60 mm without changing hardware. At 0.5 MPa the 63 mm bore pushes 1558.6 N and pulls 1458.1 N, so a practical working figure is roughly 935 N of real force once you plan at about 60% of the rating. The magnet is the -S option and this model carries it, so CMSE or DMSE reed and solid-state switches can be mounted in the body slots.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters in tight jigs, guarding and gantry frames. A hard-anodized aluminium body runs against an S45C hard-chrome-plated 16 mm rod, fixed TPU bumpers absorb end-of-stroke energy at both ends, and the female M10x1.5 rod thread plus FA flange or LB foot mounts bolt straight onto standard fixtures. Speed range is 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X60-20S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø63 mm |
| Stroke | 60 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. |
| ×60 | 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 (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 suits seating bearings into housings on small assembly presses, with the 40-60 mm adjustable window matching varying part heights.
Lifts about 79 kg vertically with a 2:1 margin, ideal for raising welding fixture plates between stations in a fabrication cell.
With the -S magnet fitted, CMSE or DMSE switches confirm full clamp on jigs mounted via the FA flange or LB foot face.
Size check: a 50 mm bore gives 981.7 N push at 0.5 MPa, while an 80 mm bore reaches 2513.3 N, so this 63 mm unit at 1558.6 N sits squarely in the mid-heavy class. Vertically it lifts about 79 kg with a 2:1 margin (158.9 kgf theoretical halved), enough for palletized cartons or small die sections. Remember the stop screw is a mechanical end stop only: on air loss the piston still drifts, so it is not a load-holding lock. If you need position feedback, this -S model already carries the magnet for CMSE / DMSE switches; if you need a longer travel, the bore accepts up to a 250 mm standard stroke.
Quick checklist
At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa push rises to 2182.1 N and pull to 2041.3 N, with a theoretical maximum of 317.9 kgf at 1.0 MPa. The -20 code is a 20 mm adjustment window: an external stop screw shortens the 60 mm extend stroke on site, giving a 40-60 mm usable range. It is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost.
It is an ISO 21287 compact cylinder whose short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits tight guarding and gantries. FA flange, LB foot and FTC brackets plus I and Y rod knuckles bolt to the standard face, and the female rod thread is M10x1.5 with a 1/8" port. This -S model carries the optional magnet, so CMSE / DMSE reed or solid-state switches can be fitted; a fixed TPU bumper at each end absorbs end-of-stroke energy.
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