Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-20SB
The AirTAC ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-20SB is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø80mm bore and 40mm 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.
- BoreØ80 mm
- Stroke40 mm
- Port size1/8"
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM12×1.75
- CushionFixed TPU bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-20SB
The ACEJ80X40-20SB is a double acting, adjustable-stroke compact cylinder built to ISO 21287. The -20 code gives a 20 mm adjustment window: an external stop screw trims the 40 mm extend stroke down to 20 mm on site, so one cylinder covers a 20-40 mm range without reordering. The male rod thread (B code) and PT ports suit direct tooling attachment.
The hard-anodized aluminium body with an S45C hard-chrome-plated 20 mm rod keeps the short ISO 21287 footprint, saving about 50% of the mounting length of an ISO 15552 profile cylinder - useful in press fixtures and guarded cells where depth is scarce. This unit carries the optional -S magnet, so CMSE / DMSE switches can be fitted for end-position sensing, and fixed TPU bumpers absorb end-of-stroke shock at both ends.
Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-20SB Technical Specifications
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-20SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø80 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod, 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.
Theoretical Output Force (Ø80mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 2356 N |
| 0.7 MPa | 3299 N |
| Max (@1.0 MPa) | 481 kgf |
ACEJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-20SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 (double rod, 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.
Where the Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-20SB Is Used
Clamping on CNC fixtures
Roughly 1508 N of usable clamp force holds steel castings on machining-centre jigs; the short ISO 21287 body fits where a full-length profile cylinder will not.
Is the Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-20SB the Right Cylinder?
Size against neighbours: a 63 mm bore pushes 1558.6 N at 0.5 MPa, while a 100 mm bore reaches 3927.0 N - pick the 80 mm when your clamping or pressing load sits between those bands. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock: on air loss the piston still drifts, so add a separate holding valve for suspended loads. FA flange or LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet lets CMSE / DMSE switches report position. Speed range is 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short stroke fits the compact body
- ✓ Port/thread type (PT / G)
- ✓ Add -S if you need the magnet for sensors
- ✓ Rod type (female / male B) & mount (FA/LB/CA)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Compact body: keep the stroke short and avoid side load on the rod.
- check Do not dismantle the threaded front/back covers.
- check Keep speed within the rated range; the TPU bumper absorbs stroke-end energy.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-20SB FAQ
At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N; at 0.7 MPa push is 3518.6 N and pull 3298.7 N; theoretical maximum is 512.6 kgf at 1.0 MPa. It is double acting with an adjustable extend stroke: the -20 stop screw trims the 40 mm stroke within a 20 mm window (usable 20-40 mm). Air supply is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, port 1/8" PT, male rod thread.
It is an ISO 21287 compact cylinder: hard-anodized aluminium body, S45C hard-chrome-plated 20 mm rod, threaded aluminium covers and fixed TPU bumpers at both ends that only decelerate at stroke ends - they never lock or hold a load. The body saves about 50% of the mounting length of an ISO 15552 profile cylinder. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be mounted; FA flange and LB foot mountings bolt straight on.
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Standard models are processed and dispatched in 3-5 business days.
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