Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 850mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke850 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75
The AirTAC SAIJ100X850-75 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 850 mm stroke that can be dialed back by up to 75 mm, yielding a usable travel window of 775 to 850 mm. Operating at 0.7 MPa, it delivers a push force of 5497 N, making it well-suited for moving heavy loads on automated lines.
The rear adjustment screw allows precise end-position tuning at commissioning or during product changeovers without swapping the cylinder or bolting on external stops. This extruded aluminum profile cylinder features a 25 mm carbon steel rod with an M20x1.5 thread, G1/2 ports, and variable air cushions at both ends. The mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 850 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100X850-75 Is Used
Product Changeover
Dial in the 775 to 850 mm travel window during packaging line format changes without replacing the cylinder or adding external mechanical stops.
Heavy Material Handling
Leverage the 5497 N push force at 0.7 MPa to push heavy pallets or workpieces, relying on the adjustable end-stop to fine-tune the handoff position.
Machine Setup
Use the 75 mm rear adjustment screw during commissioning to perfectly set the retract stroke distance for multi-stage assembly machinery.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75 the Right Cylinder?
Choose this 100 mm bore when a 63 mm bore (2182 N push at 0.7 MPa) cannot generate enough force for heavy lifting, but a 125 mm bore (8590 N push at 0.7 MPa) would be excessive. The 75 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, allowing you to fine-tune the retract end position on the fly rather than relying on a fixed-stroke SAI cylinder.
Because the 850 mm stroke is long, the 25 mm rod and M20x1.5 thread provide a robust interface, but an external guide is recommended to prevent rod side-loading and premature wear. Note that the rear adjuster and air cushions act only as travel stops and deceleration devices; they do not hold the load without live air. For fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. This cylinder is dimensionally interchangeable per ISO 15552 and uses PT tapered port threads.
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 SAIJ100 Adjustable Cylinder SAIJ100X850-75 FAQ
It features a rear stopper screw that allows you to trim the effective stroke by up to 75 mm. This creates an adjustable travel window from 775 to 850 mm, letting you fine-tune the retract end position without changing the cylinder.
At a standard operating pressure of 0.7 MPa, the SAIJ100X850-75 provides a push force of 5497 N and a pull force of 3681 N. It can reach a maximum push force of 7068 N at 0.9 MPa.
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Standard models usually ship in 3-4 days.
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