
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X90-40S 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 ACEJ63X90-40S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. Its 63 mm bore delivers 1558.6 N push and 1458.1 N pull at 0.5 MPa, rising to 2182.1 N at 0.7 MPa, with a theoretical peak of 317.9 kgf at 1.0 MPa. An external stop screw trims the 90 mm stroke by up to 40 mm, giving a usable range of 50-90 mm without changing the cylinder.
The hard-anodized aluminium body with an S45C hard-chrome rod keeps the package short: it saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight clamping fixtures and gantries. Because roughly 60% of the push force is a realistic working figure, plan for about 935 N of real work at 0.5 MPa - enough to lift about 95 kg vertically, or about 79 kg with a 2:1 margin. The fitted -S magnet accepts CMSE / DMSE switches, and a fixed TPU bumper at each end absorbs end-of-stroke shock.
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X90-40S |
|---|---|
| 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. |
| -40 | 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 50-90 mm adjustable window lets one fixture clamp short and tall castings without swapping cylinders, while 1558.6 N push at 0.5 MPa holds parts firmly through milling cuts.
With about 79 kg of vertical lift at a 2:1 margin, the 63 mm bore raises pallet collars and totes on assembly lines, and the compact body fits the narrow mast frame.
CMSE switches on the fitted -S magnet confirm gate-open and gate-closed positions, and the short ISO 21287 body mounts between conveyor frames where a full-length profile cylinder will not.
At 63 mm bore this model sits in the mid-heavy class: a 50 mm bore gives 981.7 N push at 0.5 MPa, while an 80 mm bore raises it to 2513.3 N. If your load needs less than about 900 N of working force, step down; above about 1500 N, step up. The stop screw shortens the extend stroke only - it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. FA flange or LB foot mountings bolt to the ISO 21287 face, and the -S magnet is already fitted for CMSE / DMSE position sensing. Air supply: 0.15-1.0 MPa (22-145 psi), filtered to 40 um, speed 30-500 mm/s.
Quick checklist
Bore 63 mm, stroke 90 mm adjustable down to 50 mm via the 40 mm stop-screw window. Push is 1558.6 N and pull 1458.1 N at 0.5 MPa; at 0.7 MPa push reaches 2182.1 N and pull 2041.3 N. Theoretical maximum is 317.9 kgf at 1.0 MPa. Port is 1/8" PT, rod thread M10x1.5 female, rod diameter 16 mm, speed 30-500 mm/s, operating pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), temperature -20 to +70 C.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits shallow fixtures and guard-limited machines. A fixed TPU bumper at each end absorbs end-of-stroke impact. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be clipped into the body slots to signal end positions. Mount via FA flange or LB foot on the standard ISO 21287 face.
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