Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-40B
The AirTAC ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-40B is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø80mm bore and 70mm 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
- Stroke70 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 ACEJ80X70-40B
A double acting ISO 21287 compact cylinder with an adjustable extend stroke, the ACEJ80X70-40B pairs an 80 mm bore with a 70 mm stroke and a male-threaded 20 mm rod. At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N, rising to 3518.6 N on push at 0.7 MPa, with a theoretical ceiling of 512.6 kgf at 1.0 MPa. The external stop screw trims the extend stroke by up to 40 mm on site, giving a usable range of 30-70 mm without changing the cylinder.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into presses, guarding and gantries where a full-length body will not fit. A hard-anodized aluminium body carries an S45C hard-chrome rod, with a fixed TPU bumper at each end. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, ports are 1/8".
Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-40B Technical Specifications
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-40B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø80 mm |
| Stroke | 70 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 ACEJ80X70-40B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 80 | Bore size in mm. |
| ×70 | 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 (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 ACEJ80X70-40B Is Used
Clamping heavy weld fixtures
About 1508 N of usable clamp force at 0.5 MPa holds steel fabrications in automotive weld jigs, with the stop screw set to the fixture height.
Pallet eject on conveyor lines
The 70 mm stroke ejects loaded pallets or totes at line ends, and the short body fits under guarding where an ISO 15552 profile cylinder cannot.
Is the Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-40B the Right Cylinder?
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 if the load must stay put. Mounting covers FA flange and LB foot plus I/Y rod knuckles on the ISO 21287 face. This version has no magnet; if you need CMSE or DMSE switch position feedback, order the -S code instead.
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 ACEJ80X70-40B FAQ
At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N; at 0.7 MPa push is 3518.6 N, with a theoretical maximum of 512.6 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 70 mm extend stroke by up to 40 mm, so the working range is 30-70 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" port and a male-threaded 20 mm rod.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, S45C hard-chrome rod and fixed TPU bumpers at both ends that decelerate the piston at each end of travel. This model has no magnet fitted, so no switch can be read; the optional -S magnet enables CMSE or DMSE reed and solid-state switches. FA flange and LB foot mountings bolt straight to the ISO 21287 face.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-40B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.