Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50
The AirTAC SAIJ100X75-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 25-75 mm usable travel window from its 75 mm nominal stroke. It delivers robust thrust, providing 3927N push and 3681N pull force at 0.5 MPa, scaling up to 7068N at 0.9 MPa. The extruded aluminum barrel includes sensor grooves on both sides, ensuring it is dimensionally interchangeable with ISO 15552 cylinders.
This specific SKU is built with a SUS304 stainless steel rod (material code B) for superior corrosion resistance and features PT tapered port threads (G1/2). The rear adjustment screw acts purely as a mechanical stop to fine-tune the end position during commissioning; it is not a lock, so live air pressure is required to hold the load. For position-holding without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAIJ100BX75-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SAIJ100BX75-50 Is Used
Product Changeover
Dial in the 25-75 mm travel window instantly during packaging line format changes to accommodate varying carton sizes without replacing hardware.
End-Position Tuning
Use the rear stopper to fine-tune the exact retraction point during machine commissioning, preventing mechanical crashes and optimizing cycle timing.
Corrosive Environments
Leverage the SUS304 stainless steel rod for pneumatic actuation tasks in food processing or chemical handling where moisture and washdowns are frequent.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50 the Right Cylinder?
Choose this 100 mm bore when 50 mm bore thrust (982N push at 0.5 MPa) is insufficient, but you want to avoid stepping up to the 125 mm bore (6136N). The 50 mm adjustment range is ideal for machine setups requiring frequent product-size changeovers, allowing you to dial in the exact end-stop without swapping cylinders or adding external stops. Since the stroke is under 300 mm, side-load stress is minimal, but the 25 mm rod and M20x1.5 thread still handle robust axial loads. The mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, CR). To match this exactly when replacing an ISO 15552 cylinder, specify the 100 mm bore, 75 mm stroke, 50 mm adjustment, PT port, and no magnet (-S not specified).
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 SAIJ100BX75-50 FAQ
At 0.5 MPa, it provides 3927N of push force and 3681N of pull force. If you increase the operating pressure to 0.9 MPa, the push force reaches 7068N.
The rear adjuster screw lets you shorten the 75 mm nominal stroke by up to 50 mm, creating a 25-75 mm usable travel window. It functions as a mechanical stop for end-position tuning, not as a load-holding lock.
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