Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-40S
The AirTAC SAIJ80X800-40-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 4523N push force at 0.9 MPa and provides a usable travel window of 760 to 800 mm, allowing you to dial back the stroke by up to 40 mm during commissioning. The extruded aluminum barrel includes sensor grooves on both sides, and the -S magnet supports CMSE reed and DMSE electronic solid-state switches.
This model is equipped with a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads (G3/8). The rear adjuster acts strictly as a mechanical stop for end-position tuning; it does not hold the load without live air. For position holding without pneumatic pressure, consider an external rod lock or related types like SAIL or BSAI.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAIJ80BX800-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SAIJ80BX800-40S Is Used
Variable End-Stop Positioning
Fine-tune the retract distance within the 760-800mm window to dial in exact end-of-stroke positions for precision assembly equipment without external stops.
Machine Setup Changeover
Quickly adjust the travel limit during product line changeovers, saving downtime by using the rear screw instead of replacing the entire cylinder.
Long-Stroke Material Handling
Manage long-travel pushing tasks on conveyors where the 80mm bore provides substantial 4523N push force to move heavy pallets or workpieces.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-40S the Right Cylinder?
Choose this 80mm bore when an application requires higher thrust than the 63mm version (2805N at 0.9 MPa) but less than the 100mm class (7068N). An adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, avoiding the need to swap out a fixed-stroke SAI cylinder. When replacing an ISO 15552 unit, match the 80mm bore, 800mm stroke, 40mm adjustment, PT G3/8 ports, and the -S magnet.
Because the 800mm stroke is exceptionally long, the 25mm rod diameter must be adequately guided to prevent excessive side-loading and buckling. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR brackets.
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 SAIJ80BX800-40S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 40mm, providing a usable travel window of 760 to 800mm. It functions as a mechanical stop for end-position tuning and does not lock or hold the load without continuous air pressure.
At 0.9 MPa, this 80mm bore cylinder generates a push force of 4523N and a pull force of 3681N. It operates at speeds between 30 and 800 mm/s.
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