Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-50S 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 SAIJ100X850-50S
The AirTAC SAIJ100X850-50-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 3927N push force at 0.5 MPa and provides a usable travel window of 800 to 850mm, letting you dial back the stroke by up to 50mm during commissioning without adding external stops. A carbon steel rod and M20x1.5 thread handle high side loads, while the -S magnet enables precise position sensing via CMSE reed or DMSE solid-state switches.
This extruded aluminum profile cylinder omits tie-rod construction and operates at speeds between 30 and 800mm/s. It uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and includes variable air cushions at both ends. The rear adjuster acts purely as a travel stop for end-position tuning, not a lock, so live air pressure is required to hold the load.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-50S |
|---|---|
| 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 SAIJ100X850-50S
| 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 SAIJ100X850-50S Is Used
Machine Changeover
Dial in the 800 to 850mm travel window during product size changes to set new retract positions without physically replacing the cylinder.
Long-Stroke Diverting
Actuate large diverter arms on heavy-duty conveyors where the 3927N thrust at 0.5MPa easily pushes substantial loads.
Assembly Press Setup
Fine-tune the end-stop during initial commissioning of an automated press to guarantee precise positioning without relying on external mechanical stops.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-50S the Right Cylinder?
Select this 100mm bore model when your application requires substantial thrust—stepping down to an 80mm bore drops the 0.5MPa push force to 2513N, whereas stepping up to 125mm yields 6136N. The 50mm adjustment range is ideal for product changeovers on a line, allowing you to fine-tune the retract end-position rapidly instead of swapping out the entire cylinder for a fixed-stroke SAI variant.
For an 850mm stroke, the long unsupported piston rod is susceptible to bending under side loads, so an external guide rail is strongly recommended to prevent premature seal wear. Ensure your setup matches the exact ISO 15552 mounting interface dimensions, including the PT tapered port threads, your chosen mounting bracket, and the -S magnet option for CMSE/DMSE sensors.
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 SAIJ100X850-50S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 50mm, providing an adjustable travel window of 800 to 850mm. It functions as a mechanical stop to fine-tune the retract position and does not lock or hold the load without live air pressure.
At 0.5MPa it provides 3927N of push force and 3681N of pull force. At the maximum operating pressure of 0.9MPa, the push force increases to 7068N.
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