
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X90-50S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø63mm bore and 90mm 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 ACEJ63X90-50S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. A 63 mm bore delivers 1558.6 N push and 1458.1 N pull at 0.5 MPa, rising to 2182.1 N push at 0.7 MPa, with a theoretical maximum of 317.9 kgf at 1.0 MPa. The -50 code adds a 50 mm adjustment window: an external stop screw trims the 90 mm extend stroke down on site, giving a usable range of 40-90 mm without changing the cylinder.
The hard-anodized aluminium body with a 16 mm S45C hard-chrome rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight press fixtures and gantries. Plan on roughly 935 N (about 95 kg) of real work at 0.5 MPa rather than the full rating, which corresponds to lifting about 79 kg vertically - or around 40 kg with a 2:1 margin. This model carries the optional -S magnet, so CMSE / DMSE switches can be mounted for end-of-stroke sensing.
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X90-50S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø63 mm |
| Stroke | 90 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. |
| ×90 | 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.
1558.6 N push at 0.5 MPa clinches brackets or stakes light assemblies, and the 50 mm window lets one cylinder serve several part heights between 40 and 90 mm.
The short ISO 21287 body fits under low conveyor frames, while the fitted magnet and a DMSE switch confirm the gate is fully retracted before the next carton passes.
Lifting about 79 kg vertically at 0.5 MPa, the cylinder holds strap tensioners down on a palletizing head, with the 90 mm stroke trimmed to match strap height.
At 63 mm bore this sits in the mid-heavy class: a 50 mm bore pushes 981.7 N at 0.5 MPa, while an 80 mm bore reaches 2513.3 N, so step up if your jig needs over 1500 N of continuous push. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock - on air loss the piston still drifts, so add a separate holding valve for suspended loads. FA flange or LB foot mounts bolt to the ISO 21287 face, and the fitted -S magnet pairs with CMSE / DMSE switches; order the G thread option if PT ports do not suit your manifold.
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, with a theoretical maximum of 317.9 kgf at 1.0 MPa. The -50 code gives a 50 mm adjustment window: turn the external stop screw to shorten the 90 mm extend stroke anywhere down to 40 mm. It runs double acting on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, with a fixed TPU bumper at both ends.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits cramped fixtures where a full-length profile cylinder will not. This model carries the optional -S magnet, so CMSE reed or DMSE solid-state switches clamp into the body slots for end-of-stroke detection. FA flange and LB foot mounts bolt straight to the standard face; the rod end is female M10x1.5 and the ports are 1/8" PT.
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