
The AirTAC Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ100X50-20 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø100mm bore and 50mm 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 ACEJ100X50-20 is a double acting ISO 21287 compact cylinder with a 100 mm bore and a 50 mm stroke that can be trimmed on site. An external stop screw shortens the extend stroke by up to 20 mm, giving a usable range of 30-50 mm without changing the cylinder. At 0.5 MPa it pushes with 3927 N and pulls with 3769.9 N, rising to 5497.8 N at 0.7 MPa, with a theoretical maximum of 800.9 kgf at 1.0 MPa. As a rule of thumb, plan on about 2356 N of real work at 0.5 MPa, and expect roughly 200 kg of vertical lift with a 2:1 margin.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so this 100 mm bore fits heavy clamping stations where a full-length cylinder cannot. A hard-anodized aluminium body carries an S45C hard-chrome plated 20 mm rod, and fixed TPU bumpers absorb end-of-stroke shock at both ends. This unit has no magnet fitted; order the optional -S code to enable CMSE / DMSE switches. FA flange and LB foot mounts bolt straight to the ISO 21287 face.
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ100X50-20 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø100 mm |
| Stroke | 50 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. |
| ×50 | 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 3927 N push at 0.5 MPa seats bearings or bushings into aluminium housings, and the 20 mm window lets you trim the 50 mm stroke to the exact seating depth.
Short-body 100 mm bore clamps weld fixtures where an ISO 15552 profile cylinder is too long; about 2356 N of usable force holds sheet steel through the weld cycle.
Swings heavy safety gates and diverters on packaging lines, lifting about 200 kg vertically with a 2:1 margin, with the stop screw set to clear guards.
Size against neighbours: the 80 mm bore gives 2513.3 N push at 0.5 MPa, while stepping up to 125 mm raises it to 6135.9 N, so the 100 mm bore at 3927 N sits in the middle for heavy presses and fixtures. Remember the stop screw is a mechanical end stop only, not a mid-stroke lock, so the piston still drifts if air is lost. Match FA flange or LB foot mounting to your fixture and add the -S code if position sensing is needed.
Quick checklist
At 0.5 MPa it pushes 3927 N and pulls 3769.9 N; at 0.7 MPa push is 5497.8 N and pull is 5277.9 N. The theoretical maximum is 800.9 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and air filtered to 40 um. The extend stroke is adjustable from 30-50 mm via the stop screw within the -20 window.
An external stop screw shortens the extend stroke by up to 20 mm, so the 50 mm stroke can be set anywhere from 30-50 mm on site; it is a mechanical end stop, not a load-holding lock. This unit ships without a magnet, so no CMSE or DMSE switch can be read unless you order the optional -S magnet code. Mounting is via FA flange or LB foot on the ISO 21287 face, and the fixed TPU bumpers at both ends absorb end-of-stroke shock.
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