Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-75 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 SAIJ100BX850-75
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. This allows you to fine-tune the retract end position at commissioning without swapping the cylinder or adding external stops. The 100 mm bore delivers 3927 N of push force at 0.5 MPa.
This SKU features a SUS304 stainless steel rod (option B) for superior corrosion resistance and features PT tapered port threads (G1/2). The extruded aluminum barrel includes sensor grooves on both sides, ready for AirTAC CMSE or DMSE switches if a magnet is added later. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-75 |
|---|---|
| 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 SAIJ100BX850-75
| 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 SAIJ100BX850-75 Is Used
Product Size Changeovers
Dial in the 775-850 mm travel window during format changeovers to accommodate different product lengths without physically replacing the cylinder.
Machine Setup Tuning
Fine-tune the retract end position during commissioning using the rear stopper, avoiding the need to bolt on external shims or stops.
Heavy Material Handling
Leverage the 3927 N push force at 0.5 MPa to move heavy pallets or fixtures, using the SUS304 rod for durability in harsh environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-75 the Right Cylinder?
Choose this 100 mm bore when you need substantial thrust, such as 3927 N push or 3681 N pull at 0.5 MPa. If your application requires less force, stepping down to an 80 mm bore provides 2513 N push force, whereas a 125 mm bore offers 6136 N for heavier loads. The adjustable stroke is ideal for product changeovers on a line where exact end positions vary slightly. Because the nominal stroke is 850 mm, an external guide is highly recommended to prevent excessive side loading on the rod.
For an exact ISO 15552 replacement, match the 100 mm bore, 850 mm stroke, 75 mm adjustment code, PT port thread, and your required mounting hardware. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. If your machine needs to hold position without continuous air pressure, select a SAIL lock or BSAI clamp-lock cylinder instead, as the rear adjuster here is a stop, not a brake.
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 SAIJ100BX850-75 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 75 mm from the 850 mm nominal length, giving an adjustable travel range of 775 to 850 mm. It functions as a mechanical stop and does not lock the load without live air pressure.
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