Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75S 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 SAIJ100X850-75S
The AirTAC SAIJ100X850-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a substantial 3927N push force at 0.5 MPa and features a 25mm carbon steel rod with an M20x1.5 thread. By utilizing the external stopper, you can trim the effective travel to establish a precise 775 to 850mm usable window without altering your machine layout.
This unit includes a magnet for position sensing and is fully compatible with AirTAC CMSE reed and DMSE solid-state switches mounted into the dual-side sensor grooves. The rear adjuster functions strictly as a travel stop for end-position tuning, not a lock, meaning live air pressure is required to hold the load in place.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75S |
|---|---|
| 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 SAIJ100X850-75S
| 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 SAIJ100X850-75S Is Used
Variable End-Stop Machining
Dial in the exact clamping depth between 775mm and 850mm during machine setup, avoiding the need to swap cylinders when cutting different material profiles.
Product Size Changeovers
Quickly adapt a packaging line to varying box lengths by adjusting the rear stopper, cutting down changeover time while maintaining high 3927N pushing capacity.
Long-Stroke Assembly Presses
Use the 850mm travel to reach across large assemblies, fine-tuning the final seating position within a 75mm window to accommodate varying component tolerances.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-75S the Right Cylinder?
Choose this 100mm bore when a 50mm bore (delivering 982N push at 0.5 MPa) is insufficient for your tooling payload. The 75mm adjustment range is ideal for product changeovers, letting you dial in the exact end-stop on the fly instead of physically swapping out an 850mm fixed-stroke SAI cylinder. Because the total travel reaches 850mm, an external guide rail is strongly recommended to manage rod side-loading and prevent premature seal wear.
To match this ISO 15552 interchangeable cylinder for a retrofit, specify a 100mm bore, 850mm stroke, 75mm adjustment, PT tapered port threads, and the -S magnet option. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the 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 SAIJ100 Adjustable Cylinder SAIJ100X850-75S FAQ
It features a rear screw stopper that lets you reduce the nominal 850mm stroke by up to 75mm, creating a usable travel window of 775 to 850mm. This allows fine-tuning of the end position at commissioning without adding external stops.
At a 0.5 MPa operating pressure, it provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
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