Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 280mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke280 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40S
The AirTAC SAIJ80X280-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 240 to 280 mm usable travel window. It delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it a robust choice for medium-to-heavy pneumatic motion. Equipped with a SUS420J2 stainless steel rod and a -S magnet, it supports position sensing via AirTAC CMSE reed and DMSE electronic solid-state switches in the dual-side sensor grooves.
The 40 mm adjustment range allows you to dial back the end-of-stroke position at commissioning without swapping out the cylinder or adding external stops. The rear adjuster acts purely as a travel stop and works alongside the 36 mm air cushions at both ends to decelerate the load. It does not hold the load without live air pressure; for dead-end holding, consider an external rod lock or the AirTAC SAIL series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×280 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance within the 240-280 mm window during machine commissioning without physically changing the cylinder mounting.
Product Size Changeover
Quickly adapt the stroke end-position on a packaging line when switching between different box or part sizes, saving setup time.
Heavy-Duty Assembly Press
Leverage the 2513 N push force at 0.5 MPa for pressing components, using the rear stopper to fine-tune the pressing depth accurately.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40S the Right Cylinder?
Choose this 80 mm bore when the 50 mm class (982 N push at 0.5 MPa) is insufficient but the 100 mm class (3927 N) is oversized. The 280 mm stroke with a 40 mm adjuster is ideal for machine setups requiring variable end-stops during product changeovers. When ordering an ISO 15552 replacement, match the 80 mm bore, 280 mm stroke, 40 mm adjustment, PT tapered ports, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR variants.
Because the 280 mm stroke is substantial, the 25 mm rod diameter and M20x1.5 thread provide rigidity, but an external guide rail is still recommended for long unsupported loads to prevent side-loading damage. Operating speed ranges from 30 to 800 mm/s.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.9 MPa, the push force increases to 4523 N.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective stroke by up to 40 mm from the 280 mm nominal length, creating a 240-280 mm travel window. It does not lock the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.