Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 40mm 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
- Stroke40 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-40S
The AirTAC SAIJ100X40-40-S is a double-acting, single-rod ISO 15552 profile cylinder engineered for precise end-position tuning. It features a built-in rear adjusting screw that allows you to trim the effective travel within a 0 to 40 mm window, providing exact end-stop calibration without the need for external stops. Delivering a robust 3927 N of push force at 0.5 MPa, it is designed for heavy-duty positioning tasks.
Equipped with a magnet for position sensing, this unit is fully compatible with AirTAC CMSE reed and DMSE electronic switches that mount directly into the dual-side sensor grooves on the extruded aluminum barrel. The standard carbon steel rod features an M20x1.5 thread, providing excellent structural rigidity and side-load resistance. Mounting options adhere to the SAIJ subset, including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 40 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 SAIJ100X40-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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 SAIJ100X40-40S Is Used
Variable Depth Pressing
Dial in the exact 0-40 mm travel limit on the fly to accommodate different material thicknesses during pressing or stamping operations without changing the actuator.
Machine Changeover
Speed up product line changeovers by turning the rear stopper to set new end positions quickly, eliminating the need to swap out physical hard stops.
Adjustable Ejection
Control the ejection distance of parts from a machine bed, allowing operators to fine-tune the stroke window to prevent parts from overshooting the conveyor.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-40S the Right Cylinder?
Select this 100 mm bore actuator when an application demands high thrust combined with variable end-stop positioning, such as pressing or clamping operations where material thickness varies. If your process requires less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, whereas larger loads up to 6136 N require the 125 mm bore. The integrated rear adjuster acts solely as a mechanical travel stop to fine-tune the stroke; it does not lock or hold the load pneumatically. For applications requiring true load-holding without live air pressure, consider the SAIL or BSAI series instead.
This model is dimensionally interchangeable with ISO 15552 cylinders and features a PT tapered port thread. Because the nominal stroke is 40 mm, the rear adjustment mechanism allows the usable stroke to be dialed back to zero, effectively covering the entire travel range. For any application exceeding 300 mm of stroke, an external guide is recommended to prevent rod binding, though this short-stroke unit handles side loads well.
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 SAIJ100X40-40S FAQ
At an operating pressure of 0.5 MPa, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. If operated at 0.7 MPa, the push force increases to 5497 N.
The rear adjusting screw acts as a mechanical stop that allows you to shorten the 40 mm nominal stroke by up to 40 mm, giving you a usable travel window of 0 to 40 mm. It only limits the travel end and does not hold the load without live air pressure.
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