Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 475mm 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
- Stroke475 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-75S
The AirTAC SAIJ100X475-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 475 mm nominal travel by up to 75 mm. This creates a highly flexible 400-475 mm usable stroke window, perfect for dialing in exact end positions during machine commissioning or product changeovers without physically swapping the cylinder or adding external stops. It features a standard carbon steel rod and a built-in magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors mounted in the dual-side sensor grooves.
Belonging to the 100 mm bore class, this actuator generates 3927 N of push force and 3681 N of pull force at a standard 0.5 MPa operating pressure, peaking at 801 kgf when supplied with 1.0 MPa. The robust M20x1.5 rod thread and 25 mm rod diameter provide excellent resistance to side loads, though the 475 mm stroke length still necessitates an external guide for heavy or off-center loads. It utilizes a G1/2 port, integrates 36 mm variable air cushions at both ends, and operates at speeds between 30 and 800 mm/s.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 475 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 SAIJ100X475-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×475 | 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 SAIJ100X475-75S Is Used
Machine Setup & Changeover
Leverage the 400-475 mm adjustable travel window to fine-tune retract positions during product line changeovers without disassembling the actuator or adding external mechanical stops.
Variable End-Stop Positioning
Ideal for automated equipment requiring precise end-position tuning at commissioning, using the rear adjusting screw to perfectly dial in the 475 mm nominal stroke to match the process.
Product Size Transitions
Adjust the cylinder's effective stroke on the fly to accommodate varying package or product sizes moving down a conveyor line, ensuring consistent physical placement every time.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-75S the Right Cylinder?
Select this 100 mm bore model when your application requires substantial thrust that a 80 mm bore cannot provide, stepping up from 2513 N to 3927 N of push force at 0.5 MPa. Conversely, if 3927 N is excessive for your payload, stepping down to an 80 mm bore would reduce the force output while saving physical envelope space. The defining reason to choose this SAIJ adjustable variant over a fixed SAI cylinder is the 75 mm external adjustment screw at the rear, which allows you to fine-tune the retract end-position on the fly.
When ordering a replacement for an ISO 15552 machine footprint, verify the 100 mm bore, 475 mm stroke, 75 mm adjustment range, G1/2 PT tapered ports, and the required -S magnet for sensor feedback. Keep in mind that the rear adjuster acts purely as a travel stop to set deceleration endpoints; it does not lock or hold the load without continuous live air pressure. For true load-holding requirements without air pressure, consider an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder 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 SAIJ100X475-75S FAQ
At a standard 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. If the pressure is increased to 0.9 MPa, the push force reaches 7068 N.
The rear adjusting screw acts as an external stopper that allows you to shorten the 475 mm nominal stroke by up to 75 mm, creating a usable travel window of 400 to 475 mm. It sets the end position but does not lock the load without live air pressure.
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