Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 850mm 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
- Stroke850 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-30S
The AirTAC SAIJ80X850-30-S is a double-acting, adjustable-stroke profile cylinder conforming to ISO 15552 dimensional standards. It features a 25mm SUS304 stainless steel rod and a PT G3/8 port, delivering a robust 4523N push force at 0.9 MPa. An integrated rear stopper allows you to trim the nominal 850mm travel back by up to 30mm, creating a precise 820-850mm usable stroke window for exact end-position tuning.
This rear adjuster acts purely as a mechanical travel stop to set the retraction endpoint and is not a locking device. For position holding without live air pressure, an external rod lock or related types like the SAIL or BSAI cylinders are required. The extruded aluminum barrel includes sensor grooves on both sides, and the -S magnet is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 850 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 SAIJ80BX850-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×850 | 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 SAIJ80BX850-30S Is Used
Variable End-Stop Machining
Dial in the exact 820-850mm retraction point during tooling setup to accommodate varying raw material lengths without external stops.
Product Changeover Lines
Quickly adjust the stroke length by up to 30mm during production line changeovers to handle different package sizes efficiently.
Sensor-Ready Positioning
Leverage the integrated -S magnet with DMSE electronic sensors to confirm the adjusted end-of-stroke position in automated assembly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-30S the Right Cylinder?
Choose this 80mm bore when the 50mm class (offering 1767N push at 0.9 MPa) is insufficient, but the 100mm bore (7068N) would be excessive overkill. The adjustable 820-850mm window is ideal for machine setups requiring commissioning fine-tuning or product changeovers without swapping out the entire cylinder. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR brackets. Because the 850mm stroke is long and unsupported, an external guide rail is strongly recommended to prevent excessive side-loading on the rod.
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 SAIJ80BX850-30S FAQ
It delivers a push force of 4523N and a pull force of 2268N at 0.9 MPa. The operational speed range for this 80mm bore cylinder is 30-800 mm/s.
The rear adjuster screw allows you to shorten the 850mm nominal stroke by up to 30mm, providing an effective travel window of 820-850mm. This stopper sets the end position but does not lock the load without live air pressure.
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