
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X90-20 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø32mm 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 ACEJ32X90-20 is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 90 mm stroke by up to 20 mm on site, giving a usable range of 70-90 mm without changing the cylinder. At 0.5 MPa the 32 mm bore delivers 402.1 N push and 345.6 N pull, rising to 563 N push at 0.7 MPa. Its short hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit.
For sizing, plan on roughly 240 N of real work at 0.5 MPa (about 0.6 of the push rating), which corresponds to lifting about 12 kg vertically with a 2:1 margin. The S45C hard-chrome plated rod ends in a female M8x1.25 thread, a fixed TPU bumper absorbs end-of-stroke energy at both ends, and speed runs 30-500 mm/s. This version has no magnet fitted; order the optional -S code if you later need CMSE / DMSE switch sensing.
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X90-20 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø32 mm |
| Stroke | 90 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. |
| ×90 | Stroke length in mm. |
| -20 | 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 70-90 mm trim range lets machinists dial the clamp stroke to each pallet, while 402.1 N at 0.5 MPa holds aluminium workpieces firmly through milling cycles.
A 90 mm stroke with on-site shortening matches carton pitch changes on food and beverage conveyors, and the compact body fits under low guard rails.
About 12 kg of vertical lift with margin handles PCB trays and small housings, with the stop screw set precisely per tray style.
At 402.1 N push (0.5 MPa) this 32 mm bore suits clamping and positioning loads in the 20-30 kg class; step down to a 25 mm bore (245.4 N push) for lighter fixtures or up to a 40 mm bore (628.3 N push) when the load grows. The -20 window means your final stroke must land between 70 and 90 mm - the stop screw only shortens the extend stroke, it never lengthens it, and it is a mechanical end stop rather than a mid-stroke lock, so the rod can still drift if air is lost. Mount with FA flange or LB foot brackets on the ISO 21287 face, add I or Y rod knuckles as needed, and specify the optional -S magnet if CMSE / DMSE position switches are planned.
Quick checklist
Push is 402.1 N and pull 345.6 N at 0.5 MPa; at 0.7 MPa push rises to 563 N and pull to 483.8 N, with a theoretical maximum of 82 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window: an external stop screw shortens the 90 mm extend stroke anywhere down to 70 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 with a female M8x1.25 rod thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium barrel, threaded aluminium covers and a fixed TPU bumper at each end that decelerates the piston at stroke ends only - it never locks or holds a load. Sensing is not fitted on this model: the magnet is the optional -S code, so order ACEJ32X90-20S if you want CMSE or DMSE switches to work. FA flange and LB foot brackets bolt straight to the standard mounting face.
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