Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 45mm 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
- Stroke45 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40
The AirTAC SAIJ100X45-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5 MPa. It features a SUS304 stainless steel rod and a PT tapered port. By integrating an external adjusting stopper, this model provides a usable travel window of 5 to 45 mm, allowing precise end-position tuning without swapping out the entire unit.
The rear screw acts purely as a travel stop and works in tandem with the standard air cushions to manage deceleration, but it does not lock the load without live air pressure. For load-holding requirements without continuous air, an external pilot-operated check valve or a related SAIL lock cylinder is required. This extruded aluminum profile cylinder supports AirTAC CMSE and DMSE sensors only when a magnet is specified.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 45 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 SAIJ100BX45-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×45 | 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 SAIJ100BX45-40 Is Used
Variable End-Stop Tuning
Dial in the exact retract position between 5 and 45 mm during machine commissioning to perfect product seating without machining new hard stops.
Product Size Changeover
Quickly adapt a production line for different part lengths by turning the rear adjuster, reducing downtime between production runs.
High-Force Positioning
Leverage the 3927N push force at 0.5 MPa to move heavy fixtures into place while fine-tuning the final resting position on the fly.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40 the Right Cylinder?
Choose this 100mm bore when an 80mm cylinder lacks sufficient thrust, as stepping up from the 80mm bore (2513N push at 0.5 MPa) to this model yields 3927N at the same pressure. The 40mm adjustment range is ideal for machine setups requiring variable end-stops or frequent product-size changeovers, saving the effort of adding external physical stops. If you need to hold a load securely without live air pressure, note that this adjuster is not a brake; consider the BSAI clamp-lock series instead.
To match this exact configuration for an ISO 15552 replacement, specify a 100mm bore, 45mm stroke, 40mm adjustment, PT port thread, SUS304 (B) rod material, and no magnet. Because the nominal stroke is under 300mm, side-load concerns are minimal, but always ensure the M20x1.5 rod thread is properly aligned to avoid binding.
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 SAIJ100BX45-40 FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
The rear adjuster allows you to trim the effective stroke by up to 40mm from the 45mm nominal length, creating a usable travel window of 5 to 45mm. It functions as a mechanical stop for end-position tuning and does not hold the load without live air.
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