
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X45-40 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø32mm bore and 45mm 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 ACEJ32X45-40 is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 45 mm stroke down by up to 40 mm, giving a usable range of 5-45 mm without changing the cylinder. At 0.5 MPa the 32 mm bore delivers 402.1 N on the extend stroke and 345.6 N on retract, rising to 563 N and 483.8 N at 0.7 MPa, with a theoretical ceiling of 82 kgf at 1.0 MPa. As a rule of thumb, plan on roughly 240 N of real work at 0.5 MPa, which corresponds to lifting about 20 kg vertically with a 2:1 margin.
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 tight fixtures, guarding and gantry frames. A fixed TPU bumper at each end absorbs end-of-stroke energy, and FA flange or LB foot mounts bolt straight to the ISO 21287 face. This version has no magnet fitted; order the -S code if you need CMSE / DMSE switch sensing.
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X45-40 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø32 mm |
| Stroke | 45 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. |
| ×45 | 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 402.1 N push at 0.5 MPa clamps aluminium or small steel parts in machining fixtures, and the 5-45 mm adjustable range lets the setter dial in the exact clamp position per part family.
Mounted beside a conveyor, the short ISO 21287 body kicks cartons or blisters off the belt; the stop screw trims the stroke so the product clears the guard without overtravel.
In electronics or small-appliance assembly, the 45 mm stroke ejects finished sub-assemblies from a nest, with about 20 kg vertical-lift equivalent for light pick-and-place duties.
Size by force first: if 402.1 N push at 0.5 MPa is marginal for your jig, step up to the 40 mm bore (628.3 N at 0.5 MPa); if it is generous, the 25 mm bore (245.4 N) may save space. The 45 mm stroke with a 40 mm window suits stations where the exact end position is tuned on the machine, not on paper. Remember the stop screw is a mechanical end stop only - it trims the extend stroke but does not lock the piston if air is lost. FA flange and LB foot mounts plus I/Y rod knuckles fit standard ISO 21287 fixtures, and the optional -S magnet enables CMSE / DMSE switches on this model.
Quick checklist
The 32 mm bore pushes 402.1 N and pulls 345.6 N at 0.5 MPa; at 0.7 MPa those figures rise to 563 N and 483.8 N, with a theoretical maximum of 82 kgf at 1.0 MPa. It is double acting, runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, with a 12 mm rod, M8x1.25 female rod thread and 1/8" ports.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at both ends and FA flange or LB foot mounting options. Sensing is not fitted on this version: the magnet is the optional -S code, and only with -S ordered can CMSE / DMSE reed or solid-state switches be mounted in the body slots.
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