Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 750mm 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
- Stroke750 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40
The AirTAC SAIJ100X750-40 is a double-acting ISO 15552 profile cylinder featuring a rear mechanical stroke adjuster. It delivers a robust 5497N of push force at 0.7 MPa and provides a usable travel window of 710 to 750 mm, letting you dial back the retract end-position by up to 40 mm during commissioning. The extruded aluminum barrel includes dual sensor grooves, and because this configuration uses a SUS304 stainless steel rod, it is well-suited for environments where corrosion resistance is a priority.
This model features PT tapered port threads and a sizable 25 mm rod diameter that handles high side loads, though a 750 mm stroke still requires an external guide to prevent rod bending. The rear stopper acts purely as a travel limit and works alongside the adjustable air cushions at both ends to decelerate the load. It does not hold the load without live air pressure; for true position holding, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 750 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 SAIJ100BX750-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×750 | 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 SAIJ100BX750-40 Is Used
Machine Setup & Changeover
Fine-tune the 40 mm retract window during line changeovers to accommodate new product lengths without physically replacing the cylinder.
Variable End-Stop Positioning
Dial in the exact 710 to 750 mm end-position during initial commissioning to perfect a press or clamping operation.
Long-Stroke Material Handling
Move heavy pallets or fixtures with 3927N of 0.5 MPa thrust while relying on the rear stopper to set precise retraction limits.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40 the Right Cylinder?
Choose this 100 mm bore when a 63 mm bore falls short—yielding 1559N at 0.5 MPa, the 100 mm bore provides 3927N at the same pressure, making it the right step up for heavy actuation. The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers, saving you from swapping out a fixed-stroke SAI cylinder. When ordering, verify the 100 mm bore, 750 mm stroke, 40 mm adjustment, PT ports, and your required mounting bracket.
The SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. Because the stroke is 750 mm, always incorporate an external linear guide to manage side loads and prevent rod deflection. The standard speed range for this bore is 30-800 mm/s.
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 SAIJ100BX750-40 FAQ
At 0.5 MPa, the push force is 3927N and the pull force is 3681N. At 0.7 MPa, the push force increases to 5497N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from 750 mm down to 710 mm. It only sets the travel end and does not lock the load without live air pressure.
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