Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-75S 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 SAIJ100BX850-75S
The AirTAC SAIJ100X850-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 850 mm travel that can be fine-tuned down by up to 75 mm, yielding a precise 775-850 mm usable window. This allows you to dial in the exact end position during commissioning without adding external stops. It delivers robust thrust, pushing 7068 N at 0.9 MPa.
This SKU features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel maintains standard ISO 15552 mounting dimensions. The rear adjuster acts purely as a mechanical stop to set deceleration and end-of-travel limits, so it will not hold a load without continuous air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-75S |
|---|---|
| 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 SAIJ100BX850-75S
| 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 SAIJ100BX850-75S Is Used
Variable End-Stop Tuning
Dial in the exact 775-850 mm travel distance during machine commissioning to accommodate varying product lengths without external physical stops.
Product Size Changeover
Quickly adapt automated lines to new package dimensions by adjusting the rear stopper screw, reducing downtime between production runs.
Heavy-Duty Positioning
Leverage the 7068 N push force at 0.9 MPa to move substantial jigs or materials while relying on the fine-tuned rear stop for precise placement.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX850-75S the Right Cylinder?
Choose this 100 mm bore when your application requires substantial force, pushing 7068 N at 0.9 MPa. If you need less thrust, a 80 mm bore offers 4523 N; if you need more, a 125 mm bore provides 11045 N. An adjustable stroke is ideal for machine setups requiring variable end stops or product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder.
For an ISO 15552 replacement match, verify the 100 mm bore, 850 mm stroke, 75 mm adjustment, PT tapered port threads, and the -S magnet option. Because the stroke is 850 mm, the 25 mm rod and M20x1.5 rod thread carry significant side loads; an external guide is strongly recommended to prevent rod binding over this long unsupported travel.
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 SAIJ100BX850-75S FAQ
At 0.9 MPa operating pressure, this 100 mm bore cylinder generates a push force of 7068 N and a pull force of 3681 N. It can deliver a maximum push force of 801 kgf at 1.0 MPa.
The rear adjuster screw lets you mechanically shorten the 850 mm nominal stroke by up to 75 mm, creating a 775-850 mm usable travel window. This stopper only sets the end position and deceleration; it does not lock or hold the load without live air pressure.
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