Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40S 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 SAIJ100X75-40S
The AirTAC SAIJ100X75-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927 N push force at 0.5 MPa, utilizing a 25 mm carbon steel rod and a G1/2 PT port. The integrated -S magnet enables precise position detection with AirTAC CMSE reed or DMSE electronic solid-state sensors.
This specific SKU provides a 75 mm nominal stroke that can be fine-tuned down by up to 40 mm, creating a usable travel window of 35-75 mm. The external rear stopper allows you to dial in the exact retract end position during commissioning without swapping hardware. The extruded aluminum barrel features sensor grooves on both sides, and the mounting set supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40S |
|---|---|
| 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 SAIJ100X75-40S
| 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 SAIJ100X75-40S Is Used
Machine Setup & Changeover
Dial in the exact retract position within the 35-75 mm window during line changeovers, avoiding the need to physically swap out cylinders for different product sizes.
Variable End-Stop Forming
Provides a tunable mechanical stop for pressing or forming applications where the material thickness varies, allowing precise depth control without reprogramming motion controllers.
High-Force Positioning
Leverages the 3927 N push force at 0.5 MPa to move heavy jigs into place, while the rear adjuster ensures the home position is perfectly aligned to the machine frame.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-40S the Right Cylinder?
Choose this 100 mm bore when a 50 mm bore (982 N push at 0.5 MPa) is insufficient, but an 80 mm bore (2513 N) would be overkill. The adjustable 35-75 mm window is ideal for prototyping or product changeovers where the exact retract distance needs on-the-fly tuning, avoiding the need to stock multiple fixed-stroke SAI cylinders. To match this ISO 15552 replacement exactly, specify the 100 mm bore, 75 mm stroke, 40 mm adjustment, G1/2 PT port, and -S magnet.
The rear adjuster acts purely as a mechanical stop to set the travel end and relies on the variable air cushion for deceleration; it does not hold the load without live air. For load-holding requirements without pneumatic pressure, consider an AirTAC SAIL pneumatic lock, BSAI clamp-lock, or an external rod lock. Although the stroke is short, the 25 mm rod handles high side loads well, but always guide the load externally for optimal longevity.
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 SAIJ100X75-40S 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 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw lets you shorten the 75 mm nominal stroke by up to 40 mm, providing a usable travel window of 35 to 75 mm. It functions as a mechanical stop to set the end position and is not a locking device.
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