Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40S 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 SAIJ100BX750-40S
The AirTAC SAIJ100X750-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 710 to 750 mm. It delivers a robust 3927 N push force at 0.5 MPa, scaling up to 7068 N at 0.9 MPa. The integrated magnet enables position sensing with AirTAC CMSE reed and DMSE electronic solid-state switches.
This model includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and a PT tapered port thread. The extruded aluminum barrel provides standard ISO 15552 mounting dimensions while housing variable air cushions at both ends to decelerate the load.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40S |
|---|---|
| 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 SAIJ100BX750-40S
| 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 SAIJ100BX750-40S Is Used
Machine Setup & Changeover
Fine-tune the 710-750 mm travel window during equipment commissioning to hit exact end positions without machining new stopper blocks.
Variable End-Stop Positioning
Adjust the retract stroke on the fly to handle varying package sizes or product dimensions moving down a production line.
Heavy-Duty Deceleration
Leverage the variable air cushions at both ends to safely bring heavy 100 mm bore loads to a smooth stop over a 750 mm span.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-40S the Right Cylinder?
Choose this 100 mm bore when a 80 mm bore (2513 N push at 0.5 MPa) lacks the necessary thrust, but a 125 mm bore (6136 N) would be oversized. The 40 mm rear adjuster is selected over a fixed-stroke SAI cylinder when you need to dial in the exact end position during machine commissioning or product changeover without adding external mechanical stops.
Because the 750 mm stroke is substantial, an external guide is recommended to prevent rod side-loading and premature wear. Note that the rear adjuster and air cushions act as travel stops and deceleration devices, not locks; the cylinder will not hold its load without live air pressure. For true load-holding, consider an external rod lock or pilot-operated check valve. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100BX750-40S FAQ
The external rear adjusting screw acts as a mechanical stop that lets you shorten the effective stroke by up to 40 mm. This gives the 750 mm nominal stroke a usable travel window of 710 to 750 mm, allowing precise end-position tuning without swapping the cylinder.
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa the push force increases to 5497 N, and it reaches 7068 N at 0.9 MPa.
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