Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-20S 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 SAIJ100X850-20S
The AirTAC SAIJ100X850-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 100mm bore, yielding a robust 5497N push force at 0.7 MPa, and a built-in magnet for position sensing. The external stopper provides a usable travel window of 830 to 850mm, allowing you to dial in the exact retract position without adding external stops.
This unit uses a carbon steel rod with an M20x1.5 thread and G1/2 ports. Because the stroke is 850mm, the 25mm rod diameter should be paired with an external guide to prevent excessive side-loading on the unsupported piston. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. The integrated magnet works seamlessly with AirTAC CMSE reed and DMSE solid-state sensors mounted in the dual-side barrel grooves.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-20S |
|---|---|
| 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 SAIJ100X850-20S
| 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 SAIJ100X850-20S Is Used
Machine Changeover
Fine-tune the retract distance by up to 20mm during product size changes without physically replacing the cylinder or repositioning hard stops.
End-Position Calibration
Dial in the exact 830 to 850mm travel window during commissioning to compensate for mechanical tolerances in long-stroke assemblies.
Heavy Payload Shifting
Leverage the 5497N push force at 0.7 MPa to move heavy materials while using the adjustable stop to set precise indexing limits.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-20S the Right Cylinder?
Choose this 100mm bore when an 80mm cylinder (3518N push at 0.7 MPa) lacks the power for heavy product changeovers or machine setups. The adjustable stroke is ideal for fine-tuning end positions at commissioning without swapping the entire cylinder. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true pneumatic locking, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 100mm bore, 850mm stroke, 20mm adjustment range, G1/2 PT ports, and the required mounting bracket. The -S magnet option ensures compatibility with AirTAC CMSE and DMSE sensors. Always support the rod end on this long 850mm stroke to maintain alignment and prevent premature seal wear.
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 SAIJ100X850-20S FAQ
At 0.7 MPa operating pressure, the 100mm bore generates a push force of 5497N and a pull force of 3681N. The maximum force at 1.0 MPa is 801 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel from 850mm down to 830mm. This allows precise end-position tuning at commissioning without swapping cylinders, but it does not lock the load without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ100 Adjustable Cylinder SAIJ100X850-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.