Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-100S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 750mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke750 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-100S
The AirTAC SAIJ40X750-100-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 650 to 750 mm. Delivering 628 N of push force at 0.5 MPa and 1130 N at 0.9 MPa, it is built for applications requiring precise end-position tuning during commissioning without swapping out the entire unit.
This model features a SUS304 stainless steel rod (option B) for superior corrosion resistance and pairs with a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports electronic DMSE or reed CMSE position switches. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-100S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 750 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX750-100S Is Used
Variable End-Stop Tuning
Dial in the exact retract distance from 650 to 750 mm during machine setup to accommodate new part dimensions without changing the cylinder.
Product Size Changeover
Quickly adjust the stroke stop on packaging or handling lines when switching between different product sizes, minimizing downtime.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod and adjustable stroke for manufacturing cells that require frequent washdowns and precise positioning.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-100S the Right Cylinder?
Choose this 40 mm bore when you need more force than a 32 mm cylinder (which provides 402 N push at 0.5 MPa) but want a more compact footprint than the 50 mm option (982 N). The 100 mm adjustment range is ideal for product changeovers on a line, allowing you to dial back the 750 mm stroke to 650 mm without adding external stops. Because the nominal stroke is 750 mm, an external guide is recommended to prevent side-loading damage to the M12x1.25 rod thread. For load-holding without live pressure, consider an external rod lock or the SAIL/BSAI series, as the SAIJ adjuster is not a brake. It is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set: 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 SAIJ40 Adjustable Cylinder SAIJ40BX750-100S FAQ
The rear adjuster is an external stopper that lets you shorten the effective stroke by up to 100 mm, providing a usable travel window of 650 to 750 mm. It sets the end position but does not lock or hold the load without continuous air pressure.
At 0.5 MPa it provides 628 N of push force and 528 N of pull force. At 0.9 MPa, the push force increases to 1130 N.
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