Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 250mm 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
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-75S
The AirTAC SAIJ100X250-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 175-250 mm from its 250 mm nominal stroke. It delivers robust thrust, pushing with 3927 N and pulling 3681 N at 0.5 MPa, making it well-suited for heavy actuation. The extruded aluminum barrel features sensor grooves on both sides, and this -S variant includes a magnet for precise positioning via CMSE reed or DMSE solid-state switches.
This model utilizes a 25 mm carbon steel rod with an M20x1.5 thread, providing substantial rigidity against side loads, though long-stroke setups still benefit from external guiding. The rear adjuster acts purely as a mechanical stop to decelerate the travel end, meaning it will not hold the load without live air pressure. For load-holding requirements without continuous pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 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 SAIJ100X250-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SAIJ100X250-75S Is Used
Machine Changeover
Fine-tune the 175-250 mm travel window during product size changes without physically replacing the cylinder or bolting on external stops.
End-Position Tuning
Dial in the exact retract stroke during commissioning using the 75 mm rear adjuster to perfect machine timing and positioning.
Heavy Payload Handling
Leverage the 3927 N push force at 0.5 MPa to move substantial loads while relying on the 25 mm rod for structural rigidity.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-75S the Right Cylinder?
Choose this 100 mm bore when your application requires higher force than the 80 mm variant (2513 N push at 0.5 MPa) but does not necessitate the massive output of the 160 mm bore. The 75 mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end position at commissioning without swapping the cylinder or adding external stops. When replacing an ISO 15552 cylinder, match the 100 mm bore, 250 mm nominal stroke, 75 mm adjuster, PT tapered port, and -S magnet requirement.
Because the 250 mm stroke is below the 300 mm threshold, side-load risks are moderate, but the 25 mm rod diameter still handles deflection well. The mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations. Note that the rear mechanical stopper and variable air cushions only set the travel end; they do not function as a lock.
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 SAIJ100X250-75S FAQ
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective travel from 250 mm down to 175 mm. This provides a 75 mm adjustable window for fine-tuning the retract end position without changing the cylinder itself.
At 0.5 MPa operating pressure, the 100 mm bore provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf.
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 SAIJ100X250-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.