Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-30 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 SAIJ100X850-30
The AirTAC SAIJ100X850-30 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 7068N of push force at 0.9 MPa and provides a usable travel window of 820 to 850mm, allowing you to trim up to 30mm off the nominal stroke during commissioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches if a magnet is specified later.
Equipped with a 25mm carbon steel piston rod and an M20x1.5 rod thread, this 100mm bore unit handles robust loads. The rear adjuster acts purely as a mechanical stop to fine-tune the end position; it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-30 |
|---|---|
| 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 SAIJ100X850-30
| 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 SAIJ100X850-30 Is Used
Variable End-Position Tuning
Dial in the exact 820-850mm travel distance during machine commissioning to accommodate slight mechanical variations without adding external stopper blocks.
Product Changeover Lines
Quickly adjust the retract stop for different product lengths on a packaging conveyor, leveraging the 7068N push force to move heavy assemblies.
Long-Stroke Assembly Presses
Use the 850mm travel to span wide work areas, fine-tuning the final approach distance with the rear screw while relying on external guides for rod stability.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-30 the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires variable end-stops or product-size changeovers without swapping the entire cylinder. If you need slightly less force, stepping down to an 80mm bore yields 4523N of push force at 0.9 MPa. If your application demands higher force, the 125mm bore provides 11045N.
Because the 850mm stroke is substantial, an external guide rail is recommended to prevent excessive side-loading on the 25mm rod. To match this ISO 15552 interchangeable cylinder exactly, verify the 100mm bore, 850mm nominal stroke, 30mm adjustment range, PT tapered G1/2 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). This set deliberately omits the FB, CA, CB, and CR mounts found on fixed-stroke variants.
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 SAIJ100X850-30 FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 30mm, creating a usable travel window of 820 to 850mm. This mechanical stop fine-tunes the end position but does not lock or hold the load without continuous air pressure.
At 0.9 MPa, the SAIJ100X850-30 provides 7068N of push force and 3681N of pull force. It operates at speeds between 30 and 800 mm/s and features a G1/2 port.
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