Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-20
The AirTAC SAIJ100X90-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 90 mm stroke back by up to 20 mm, creating a precise 70-90 mm usable travel window for commissioning. It delivers a robust 3927 N of push force at 0.5 MPa, making it well-suited for heavy-duty positioning tasks. This extruded aluminum barrel design includes integrated sensor grooves on both sides and omits tie-rod construction.
This specific SKU is configured with a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads with a G1/2 connection. The 25 mm rod diameter and M20x1.5 rod thread provide excellent rigidity, handling higher side loads than smaller bores while maintaining an operating speed of 30-800 mm/s. The rear adjuster acts purely as a mechanical stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 90 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 SAIJ100BX90-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×90 | 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 SAIJ100BX90-20 Is Used
Machine Changeover
Dial in the 70-90 mm travel window during product size transitions to set new physical end-stops without replacing the entire actuator.
Variable End-Stop Positioning
Fine-tune the retraction point at commissioning to perfect the resting state of heavy conveyors or presses handling 3927 N loads.
Heavy-Duty Assembly Lines
Leverage the 100 mm bore force and SUS304 rod durability to reliably push heavy components into precise final fixtures.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-20 the Right Cylinder?
Choose this 100 mm bore when the 80 mm class (2513 N push at 0.5 MPa) is insufficient, or step down if the 63 mm class (1559 N) provides enough force. An adjustable stroke is ideal when you need variable end-stops for machine setup or product changeovers without swapping the entire cylinder or bolting on external stops. For exact ISO 15552 dimensional interchangeability, match the 100 mm bore, 90 mm stroke, 20 mm adjustment, PT G1/2 port, and mounting choice.
Mounting options for the SAIJ series include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting the FB, CA, CB, and CR configurations. Because the stroke is under 300 mm, side-load concerns are minimal, but always guide rigid loads externally. If your application requires true load-holding without live air pressure, this cylinder's adjuster will not act as a brake; consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead.
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 SAIJ100BX90-20 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw allows you to mechanically shorten the 90 mm nominal stroke by up to 20 mm, providing a usable travel window of 70 to 90 mm. It functions as a physical stop for end-position tuning and does not lock or hold the load without continuous air pressure.
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