Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X250-40S
The AirTAC ACEJ80~100 Adjustable Compact Cylinder ACEJ80X250-40S is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø80mm 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.
- BoreØ80 mm
- Stroke250 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 ACEJ80X250-40S
A double acting AirTAC ACEJ with an adjustable extend stroke, the ACEJ80X250-40S pairs an 80 mm bore with a 250 mm stroke that a stop screw can trim by up to 40 mm on site, giving a usable range of 210-250 mm. At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N; at 0.7 MPa those figures rise to 3518.6 N and 3298.7 N, with a theoretical ceiling of 512.6 kgf at 1.0 MPa. In practice, plan on roughly 1508 N of real work at 0.5 MPa, which is about 154 kg of vertical push once you keep a working margin.
The hard-anodized aluminium body is an ISO 21287 compact build whose short profile saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into presses, gantries and guarded cells where a full-length body will not reach. The S code means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped onto the body for end-of-stroke signalling. A fixed TPU bumper at each end absorbs end-of-stroke energy, the rod is S45C steel with hard-chrome plating, and ports are 1/8" PT.
Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X250-40S Technical Specifications
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X250-40S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø80 mm |
| Stroke | 250 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 ACEJ80X250-40S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 80 | 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 (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 ACEJ80X250-40S Is Used
Pallet and tote ejectors on conveyors
The short ISO 21287 body fits under conveyor frames where an ISO 15552 profile cylinder would hang below the line, pushing rejected cartons or totes sideways off a 600 mm belt at up to 500 mm/s.
Clamping fixtures on machining centres
For jigs that clamp castings during milling or drilling, the 210-250 mm adjustable range reaches over tall workpieces, and the fitted magnet with CMSE / DMSE switches confirms clamp completion before the spindle starts.
Is the Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X250-40S the Right Cylinder?
If the machine only needs to lift a 250 kg die or fixture, this bore covers it with room to spare; if the load creeps past 350 kg at working pressure, move up. Remember the stop screw is a mechanical end stop for tuning the extend stroke, not a mid-stroke lock - on air loss the piston will still drift, so use a separate valve or lock for load holding. FA flange and LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet accepts CMSE / DMSE switches without modification.
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 ACEJ80X250-40S FAQ
The -40 code is a 40 mm adjustment window: 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 double acting on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, with a fixed TPU bumper at both ends.
This is an ISO 21287 compact cylinder whose short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits tight guards and sub-plate fixtures. This model carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches mount directly in the body slots for end-of-stroke detection. Mounting options include FA flange and LB foot, and the rod end is female M12x1.75 with a 1/8" PT port.
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 ACEJ80X250-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.