Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-40 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 SAIJ100X250-40
The AirTAC SAIJ100X250-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end position during commissioning. It provides a usable travel window of 210 to 250 mm by dialing back the nominal 250 mm stroke up to 40 mm. In the 100 mm bore class, it generates 3927 N of push force and 3681 N of pull force at 0.5 MPa.
This extruded aluminum barrel design features sensor grooves on both sides for CMSE reed or DMSE electronic switches, though a magnet must be specified separately. The standard carbon steel rod has an M20x1.5 thread, and the PT tapered port ensures a tight pneumatic seal. The rear adjuster acts purely as a travel stop to set deceleration points, not as a load-holding lock.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-40 |
|---|---|
| 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 SAIJ100X250-40
| 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 SAIJ100X250-40 Is Used
Machine Changeover
Dial in the exact 210 to 250 mm end position during product size transitions without physically replacing the cylinder or bolting on new external stops.
Pressing Operations
Leverage the 3927 N push force at 0.5 MPa for medium-duty pressing tasks while using the 40 mm adjustment window to set precise contact depth.
Variable End Stops
Perfect for automated assembly lines where the rear stopper screw easily modifies the retract distance to accommodate multiple product variants on the same fixture.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-40 the Right Cylinder?
Select this 100 mm bore model when your application requires substantial thrust—stepping down to an 80 mm bore reduces push force to 2513 N at 0.5 MPa. The adjustable stroke is ideal for product-size changeovers on a line, letting you shift the end-stop without swapping the cylinder or adding external stops. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the 250 mm stroke is substantial, always use an external guide to support the load and prevent excessive side-loading on the rod. If your process requires the load to be held without continuous live air pressure, a plain SAIJ cannot perform this function; you should consider the SAIL locking cylinder or an external rod lock. This cylinder is dimensionally interchangeable per ISO 15552.
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 SAIJ100X250-40 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder 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.
The rear adjuster screw lets you shorten the effective travel from the nominal 250 mm down to 210 mm. This creates a 210-250 mm usable window, allowing you to fine-tune the retract end position at commissioning without changing the cylinder.
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 SAIJ100X250-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.