Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-20SB
The AirTAC ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-20SB 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 ACEJ80X70-20SB
A double acting ISO 21287 compact cylinder, the ACEJ80X70-20SB pairs an 80 mm bore with a 70 mm stroke that a stop screw trims on site: the -20 code gives a 20 mm window, so the extend stroke can be set anywhere between 50 and 70 mm without changing hardware. At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N, rising to 3518.6 N at 0.7 MPa, with a theoretical ceiling of 512.6 kgf at 1.0 MPa.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits press fixtures and gantries where every millimetre of envelope counts. The male rod thread (B code), fitted -S magnet for CMSE / DMSE switches and 1/8" ports make integration straightforward.
Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-20SB Technical Specifications
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-20SB |
|---|---|
| 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 ACEJ80X70-20SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 80 | Bore size in mm. |
| ×70 | 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 ACEJ80X70-20SB Is Used
Gantry clamp on a machining line
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it clamps castings inside a tight CNC gantry guard where a full-length cylinder will not fit.
Is the Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X70-20SB 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 where a load must stay put. FA flange or LB foot mounts bolt to the ISO 21287 face, and this model already carries the -S magnet, so CMSE / DMSE switches can be fitted immediately.
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 ACEJ80X70-20SB FAQ
Operating range is 0.15-1.0 MPa (22-145 psi) with proof pressure of 1.5 MPa (215 psi), speed 30-500 mm/s, and air filtered to 40 um. A practical rule of thumb is to size the task at about 60% of the push figure, roughly 1508 N.
The -20 code means an external stop screw shortens the 70 mm extend stroke by up to 20 mm, giving a usable range of 50-70 mm; it cannot lengthen the stroke past 70 mm. The stop is a mechanical end stop, not a load-holding brake. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount in the body slots, and the B code gives a male rod thread. The body is hard-anodized aluminium with an S45C hard-chrome rod, fixed TPU bumpers at both ends, 1/8" ports, and the compact ISO 21287 body is about 50% shorter in mounting length than an ISO 15552 profile cylinder.
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