
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X125-75 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø32mm bore and 125mm 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 ACEJ32X125-75 is a double acting AirTAC compact cylinder built to ISO 21287, with a 32 mm bore and a 125 mm stroke that an external stop screw can trim by up to 75 mm on site, giving a usable extend range of 50-125 mm. At 0.5 MPa it pushes 402.1 N and pulls 345.6 N; at 0.7 MPa those rise to 563 N and 483.8 N, with a theoretical ceiling of 82 kgf at 1.0 MPa. Plan on roughly 241 N of real work at 0.5 MPa (about 60% of the push rating), which corresponds to lifting about 20 kg vertically with a 2:1 margin.
The hard-anodized aluminium body with an S45C hard-chrome plated rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, so this 125 mm stroke unit still fits shallow jigs, sliding guards and gantry pick stations. FA flange or LB foot mounts bolt to the standard ISO 21287 face, and the optional -S magnet (not fitted on this code) enables CMSE / DMSE switches. A fixed TPU bumper at each end absorbs end-of-stroke energy, and speed spans 30-500 mm/s.
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X125-75 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø32 mm |
| Stroke | 125 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 200 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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). |
|---|---|
| 32 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -75 | 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 402.1 N push at 0.5 MPa clamps aluminium or small steel workpieces in machining fixtures, and the 50-125 mm adjustable window lets one cylinder serve different pallet heights without re-plumbing.
On a carton or blister line running 30-500 mm/s, the short ISO 21287 body slots between conveyor frames where an ISO 15552 profile cylinder would overhang, with the stop screw set per product size.
Lifting about 20 kg vertically with a 2:1 margin, this cylinder handles small castings or filled blisters at gantry drop stations, with LB foot mounting on the Z-axis bracket.
Size between neighbours: bore 25 delivers 245.4 N push at 0.5 MPa, while bore 40 reaches 628.3 N, so this 32 mm unit at 402.1 N sits squarely in the mid-duty band for clamping and transfer tasks. The 125 mm stroke is well inside the 200 mm maximum standard stroke for bore 32, so it ships as a catalogue item. Remember the stop screw only shortens the extend stroke and is a mechanical end stop, not a mid-stroke lock: on air loss the piston still drifts, so add a separate valve or lock for load holding. If you need position feedback, order the -S variant to carry the magnet for CMSE / DMSE switches.
Quick checklist
At 0.5 MPa the 32 mm bore pushes 402.1 N and pulls 345.6 N; at 0.7 MPa it pushes 563 N and pulls 483.8 N, with a theoretical maximum of 82 kgf at 1.0 MPa. The ordered stroke is 125 mm and the -75 stop screw trims the extend stroke by up to 75 mm, so the usable extend range is 50-125 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the port is 1/8" (PT).
An external stop screw mechanically limits the extend stroke anywhere within the ordered 75 mm window, so you can set any extend length from 50 mm to the full 125 mm without changing plumbing. A fixed TPU bumper at both ends absorbs end-of-stroke energy but never locks or holds a load. This code has no magnet; order the -S variant to enable CMSE / DMSE reed or solid-state switches in the body's magnet slots.
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