
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X75-40SB 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 ACEJ63X75-40SB is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 75 mm stroke by up to 40 mm, giving a usable range of 35-75 mm without changing the cylinder. At 0.5 MPa the 63 mm bore delivers 1558.6 N on extend and 1458.1 N on retract, rising to 2182.1 N at 0.7 MPa, with a theoretical maximum of 317.9 kgf at 1.0 MPa. The male (B) rod thread and PT ports suit direct tooling attachment.
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 shallow fixtures and guarded cells. As a rule of thumb, plan on roughly 935 N of real work at 0.5 MPa, and halve the 159 kg vertical-lift equivalent to about 79 kg for a 2:1 margin when lifting. The fitted -S magnet works with CMSE / DMSE switches, and FA flange or LB foot mounts bolt straight to the ISO 21287 face.
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X75-40SB |
|---|---|
| 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. |
| -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.
Trim the extend stroke between 35 and 75 mm to bottom out on stamped brackets, using about 935 N of usable force at 0.5 MPa for forming and marking work.
The 1558.6 N push swings heavy conveyor gates and diverters, while the short ISO 21287 body fits the narrow frame space beside the roller bed.
The fitted -S magnet drives CMSE / DMSE switches to confirm clamp closed / open in robotic weld stations, with the male rod thread taking the clamp arm directly.
Size both ways: a 50 mm bore gives 981.7 N push at 0.5 MPa, while an 80 mm bore reaches 2513.3 N, so the 63 mm bore at 1558.6 N sits squarely in the mid-heavy class for clamping and pressing. If the load must stay held when air is lost, add an external brake - the stop screw only sets the extend position and the piston will drift on pressure loss. Order FA or LB mounting to match the fixture, and note this unit already carries the -S magnet for CMSE / DMSE position sensing.
Quick checklist
At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa it pushes 2182.1 N and pulls 2041.3 N; the theoretical maximum is 317.9 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 75 mm extend stroke by up to 40 mm, so the working range is 35-75 mm. It cannot extend past the ordered stroke, and the stop is a position setter, not a load-holding brake.
It is an ISO 21287 compact cylinder whose short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at each end to absorb end-of-stroke energy. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be mounted in the body slots. FA flange and LB foot mounts bolt to the standard ISO 21287 face; rod thread is male (B), ports are 1/8" PT, and speed is 30-500 mm/s.
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