
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-50SB is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø63mm bore and 50mm 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.
A double acting ISO 21287 compact cylinder, the ACEJ63X50-50SB pairs a 63 mm bore with a 50 mm stroke that an external stop screw can trim anywhere in a 50 mm window, giving a usable extend range of 0-50 mm without changing hardware. At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N, rising to 2182.1 N at 0.7 MPa. In practice, plan on roughly 935 N of real work at 0.5 MPa, and for vertical lifts that equates to raising about 79 kg with a 2:1 margin.
The hard-anodized aluminium body with an S45C hard-chrome rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight welding jigs and press fixtures. The -S code on this model means the magnet is fitted, so CMSE / DMSE reed or solid-state switches can be clipped on for end-of-stroke signalling, and a fixed TPU bumper at each end absorbs stop energy.
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-50SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø63 mm |
| Stroke | 50 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. |
| ×50 | 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 935 N usable push at 0.5 MPa seats steel brackets against locating pins, and the 0-50 mm trim lets one cylinder serve several fixture variants.
1558.6 N of push swings heavy conveyor gates on packaging lines, with CMSE switches confirming gate position when the -S magnet is used.
Presses bearings into housings on a bench assembly cell, lifting about 79 kg vertically with margin, at speeds set between 30 and 500 mm/s.
Size down to an ACEJ50X50-50 (981.7 N push at 0.5 MPa) if the load is lighter, or step up to an ACEJ80X50-50 (2513.3 N) when more thrust is needed. The adjuster is a mechanical end stop for the extend stroke only, not a mid-stroke lock, so the rod still drifts if air is lost. FA flange or LB foot mounts bolt to the ISO 21287 face, and the male rod thread (B code) suits rod knuckles such as the I or Y type.
Quick checklist
At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa push is 2182.1 N and pull 2041.3 N. The theoretical maximum is 317.9 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with proof pressure of 1.5 MPa (215 psi).
An external stop screw shortens the 50 mm extend stroke anywhere within the ordered 50 mm window, so the working range is 0-50 mm; it cannot extend past the ordered stroke. Because this model carries the -S magnet, CMSE / DMSE reed or solid-state switches mount in the body slots for position feedback. The fixed TPU bumpers at both ends only decelerate the piston near the ends of travel.
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