Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20S
The AirTAC SAIJ100X900-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates an 880-900mm usable travel window. It delivers 3927N of push force and 3681N of pull force at 0.5 MPa, making it a robust choice for heavy actuation. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic sensors for precise position detection.
This model uses a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads. The rear adjustment screw acts as a mechanical stop to dial in the exact end position during commissioning without adding external stops. The adjuster and air cushions only decelerate the travel end; they do not hold the load without live air.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAIJ100BX900-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SAIJ100BX900-20S Is Used
Machine Setup & Changeover
Dial in the exact 880-900mm end position during product family changeovers without physically swapping cylinders or re-engineering fixed stops.
Variable End Stops
Ideal for diverter arms or pushers on long conveyors where the final rest position needs occasional fine-tuning to align with new pallet sizes.
Heavy Assembly Presses
Leverage 3927N of thrust at 0.5 MPa to seat heavy components, using the rear screw to precisely set the bottoming-out depth for delicate parts.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX900-20S the Right Cylinder?
Choose this 100mm bore when you need heavy thrust beyond the 63mm class (1559N at 0.5 MPa) but want to avoid the massive 160mm frame. The adjustable 880-900mm window is ideal for machine setups requiring variable end-stops or product-size changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. To match this ISO 15552 footprint, specify the 100mm bore, 900mm stroke, 20mm adjustment, PT ports, SUS304 rod, and -S magnet.
Because the 900mm stroke is long and unsupported, an external guide is recommended to prevent excessive side-loading on the rod. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR. If your application requires holding the load without live air pressure, use a SAIL lock, BSAI clamp-lock, or an external rod lock instead of relying on the adjuster.
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 SAIJ100BX900-20S FAQ
At 0.5 MPa it provides 3927N push and 3681N pull force. At 0.7 MPa it delivers 5497N. The operating speed range for this 100mm bore is 30-800 mm/s.
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective travel from 900mm down to 880mm. It sets the end position but does not lock or hold the load without live air pressure.
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