Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 400mm 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
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75S
The AirTAC SAIJ100X400-75-S is a double-acting ISO 15552 profile cylinder featuring a built-in rear stroke adjuster. It provides a 325-400 mm usable travel window by trimming up to 75 mm off the 400 mm nominal stroke. Operating at 0.5 MPa, it delivers 3927 N of push force and 3681 N of pull force, making it a robust choice for heavy actuation. The barrel is extruded aluminum with sensor grooves on both sides, and this -S variant includes a magnet for position sensing.
The rear adjustment screw allows you to fine-tune the retract end position at commissioning without swapping the cylinder or adding external stops. Because the adjuster acts purely as a mechanical stop and the variable air cushions only manage deceleration, this cylinder cannot hold a load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series. The 25 mm rod and M20x1.5 thread provide excellent rigidity, though the 400 mm length means an external guide is recommended to manage side loads.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAIJ100X400-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SAIJ100X400-75S Is Used
Machine Changeover
Dial in the 325-400 mm travel window during product size changes without swapping cylinders or reworking external hard stops.
Heavy Pressing
Leverage the 3927 N push force at 0.5 MPa for pressing and forming tasks that require precise end-position tuning.
Variable Diverting
Adjust the retract position on the fly to handle varying package sizes on a conveyor line, using the -S magnet for confirmation.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75S the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust—such as the 3927 N push force at 0.5 MPa—combined with variable end-position tuning. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N of push force, while moving up to a 125 mm bore provides 6136 N. The adjustable stroke is ideal for product-size changeovers on a line, allowing you to dial in the exact 325-400 mm travel window without mechanical rework.
When specifying a replacement, ensure you match the ISO 15552 mounting interface dimensions, the PT G1/2 port threads, and the desired mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). This -S model supports AirTAC CMSE reed and DMSE solid-state sensors. Because the stroke is 400 mm, always use an external guide to prevent excessive side-loading on the rod.
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 SAIJ100X400-75S FAQ
At a standard operating pressure of 0.5 MPa, 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 acts as a mechanical stop, allowing you to shorten the 400 mm nominal stroke by up to 75 mm, creating a 325-400 mm usable travel window. It sets the end position but does not lock or hold the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.