Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-40
The AirTAC SAIJ100X75-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 3927N push force at 0.5 MPa. It features a SUS304 stainless steel rod and a PT tapered port. By turning the rear screw, you can trim the effective travel, creating a precise 35-75mm usable window without swapping out the entire actuator.
This adjustable capability is ideal for fine-tuning end positions during commissioning or product changeovers. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. Remember that the rear adjuster acts purely as a travel stop to set deceleration, not as a lock to hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAIJ100BX75-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SAIJ100BX75-40 Is Used
Machine Changeover
Dial in the 35-75mm stroke window during product size changes to quickly set new end positions without physically replacing the actuator.
Commissioning Fine-Tune
Use the rear stopper to micro-adjust the travel limit at startup, ensuring precise positioning without adding external stop blocks.
Variable End Stops
Ideal for automated lines where the final resting position of the 3927N thrust needs occasional adjustment based on tooling wear or material thickness.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-40 the Right Cylinder?
Choose this 100mm bore when you need higher thrust than a neighboring 80mm cylinder (which provides 2513N push at 0.5 MPa), but want to avoid the bulk of a 125mm unit. The adjustable 40mm window is perfect for applications requiring variable end-stops, giving you setup flexibility that a fixed-stroke SAI cylinder cannot match. To replace an ISO 15552 cylinder, match the 100mm bore, 75mm stroke, PT port, and your required mounting style.
Although the 25mm rod and M20x1.5 thread handle substantial side loads, always support the piston rod with an external guide to prevent premature wear. For applications needing true load-holding without continuous air pressure, consider the SAIL or BSAI series instead, as the SAIJ adjuster is not a brake. Available mountings include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100BX75-40 FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
The rear adjuster screw allows you to shorten the nominal 75mm stroke by up to 40mm, giving you an effective travel range of 35-75mm. It functions as a mechanical stop and does not lock the load without live air.
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