
The AirTAC Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ100X250-40 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø100mm bore and 250mm 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.
A double acting ISO 21287 compact cylinder, the ACEJ100X250-40 pairs a 100 mm bore with a 250 mm stroke that an external stop screw trims on site by up to 40 mm, giving a usable extend range of 210-250 mm. At 0.5 MPa it pushes 3927 N and pulls 3769.9 N, and the theoretical ceiling is 800.9 kgf at 1.0 MPa. The hard-anodized aluminium body carries magnet slots, and the S45C rod is hard-chrome plated for long seal life.
Because the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, this heavy-thrust size still fits presses, gantries and guard zones where a full-length profile cylinder cannot. In practice, plan on roughly 0.6 of the push force - about 2356 N - for real work at 0.5 MPa, which corresponds to lifting around 120 kg vertically with a 2:1 margin (240 kg at the full 3927 N). Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and a fixed TPU bumper sits at both ends. Note that the stop screw is a mechanical end stop only: on air loss the piston still drifts, so it is not a load-holding lock.
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ100X250-40 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø100 mm |
| Stroke | 250 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M12×1.75 |
| 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 300 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 | 3927 N | 3770 N |
| 0.7 MPa | 5498 N | 5278 N |
| Max (@1.0 MPa) | 801 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). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 3927 N push at 0.5 MPa (5497.8 N at 0.7 MPa) drives scrap-compaction and baling rams, with the 40 mm window letting operators trim ram travel to match bin depth.
Bearing pressing and staking on automotive assembly lines use the 210-250 mm adjustable extend range to seat parts precisely, with the TPU bumper absorbing end-of-stroke shock at up to 500 mm/s.
With about 240 kg of vertical lift equivalent at full 0.5 MPa push, the 100 mm bore raises gates, pallet stops and lift-assist arms on warehouse conveyor gantries.
Size this bore when your jig needs more than a 63 mm unit can give: at 0.5 MPa the 63 mm bore pushes only 1558.6 N against 3927 N here. If your load is lighter, the 80 mm bore (2513.3 N push at 0.5 MPa) may be the more economical pick. Both sizes share the 1/8" port. The -40 window suits fixtures where the final die or stop position is tuned after installation - set it anywhere from 210 to 250 mm of extend. FA flange or LB foot mounts bolt to the ISO 21287 face, and I/Y rod knuckles fit the M12x1.75 female rod thread. Position feedback needs the optional -S magnet ordered with CMSE / DMSE switches; this model without -S carries no magnet, so no sensor can be mounted.
Quick checklist
At 0.5 MPa it pushes 3927 N and pulls 3769.9 N; at 0.7 MPa push rises to 5497.8 N and pull to 5277.9 N; the theoretical maximum is 800.9 kgf at 1.0 MPa. The -40 code means an external stop screw shortens the 250 mm extend stroke by up to 40 mm, so the working range is 210-250 mm. It runs on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um, at 30-500 mm/s, with a 1/8" PT port and an M12x1.75 female rod thread. The stop is an end stop only - it does not hold a load if air is lost.
As an ISO 21287 compact cylinder it saves about 50% of the mounting length of an ISO 15552 profile cylinder, so the 250 mm stroke fits shallower machine frames. Both ends carry a fixed TPU bumper that decelerates the piston at stroke end. FA flange and LB foot mounts plus I and Y rod knuckles bolt straight to the ISO 21287 face. For end-of-stroke or mid-travel detection, order the -S variant with the optional magnet and use CMSE or DMSE switches; without -S there is no magnet and no sensing is possible. Weight and outline dimensions: confirm from datasheet.
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