Airtac SAIJ80 Adjustable Cylinder SAIJ80X85-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X85-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 85mm 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
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- 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 SAIJ80 Adjustable Cylinder SAIJ80X85-40S
The AirTAC SAIJ80X85-40-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. With a nominal 85 mm stroke and a 40 mm adjustment range, it provides a highly flexible usable travel window of 45 to 85 mm. This allows for precise end-position tuning during commissioning without the need to swap out the cylinder or add external stops. The extruded aluminum barrel includes sensor grooves on both sides, and this -S variant includes a magnet for use with CMSE reed and DMSE electronic solid-state switches.
Delivering robust performance, this 80 mm bore generates 2513 N of push force at 0.5 MPa and up to 4523 N at 0.9 MPa. The carbon steel rod features an M20x1.5 thread, and the cylinder uses PT tapered G3/8 ports. It supports a speed range of 30-800 mm/s and utilizes a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. The rear adjuster acts purely as a travel stop to set the retract end, not as a lock, meaning it cannot hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X85-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X85-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 85 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 SAIJ80X85-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×85 | 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 SAIJ80X85-40S Is Used
Machine Changeover
Dial in the exact retract distance from 45 to 85 mm during product size changes on a packaging line without replacing hardware.
End-Position Tuning
Fine-tune the final end-stop at commissioning to compensate for mechanical tolerances, using the rear screw rather than adding shims.
Variable Assembly Stops
Set distinct stroke lengths for different workpiece heights on an assembly station by adjusting the travel window as needed.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X85-40S the Right Cylinder?
Choose this 80 mm bore when your application requires the 2513 N push force at 0.5 MPa, stepping up from a 63 mm bore that provides 1559 N. The adjustable 45-85 mm travel window is ideal for machine setups requiring variable end stops or frequent product-size changeovers, offering setup flexibility that a fixed-stroke SAI cylinder cannot match. For load-holding requirements without continuous live air pressure, this cylinder is insufficient, as the rear adjuster is only a stop; consider an AirTAC SAIL or BSAI locking cylinder instead.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 85 mm nominal stroke, 40 mm adjustment, PT G3/8 port, and the appropriate mounting bracket. The carbon steel rod and M20x1.5 thread provide excellent durability, though at 85 mm stroke, side-load risks are minimal, and standard mounting is sufficient without external guides.
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 SAIJ80X85-40S FAQ
The 80 mm bore generates 2513 N of push force at 0.5 MPa and 4523 N at 0.9 MPa, with a pull force of 2268 N at 0.5 MPa.
The rear adjuster screw lets you shorten the 85 mm nominal stroke by up to 40 mm, creating a usable travel window of 45 to 85 mm to fine-tune the retract end position.
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 SAIJ80 Adjustable Cylinder SAIJ80X85-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.