Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 65mm 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
- Stroke65 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-10S
The AirTAC SAIJ40X65-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 65 mm nominal travel by up to 10 mm for a precise 55-65 mm usable window. It delivers 628 N of push force at 0.5 MPa and features a SUS304 stainless steel rod for superior corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet enables direct positioning feedback.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops during product changeovers or commissioning fine-tuning. The rear screw acts purely as a travel stop to set the retract end position, meaning it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider an external pilot-operated check valve or the related SAIL lock cylinder.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 65 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 SAIJ40BX65-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×65 | 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 SAIJ40BX65-10S Is Used
Commissioning Fine-Tuning
Dial in the exact end-of-stroke position within a 55-65 mm window during machine setup without adding external stopper blocks.
Product Size Changeover
Quickly adjust retract depth on packaging lines when switching between different product heights or formats.
Variable End-Stop Positioning
Use the rear adjuster screw to set precise retract limits for delicate assembly operations requiring exact stopping points.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-10S the Right Cylinder?
Choose this 40 mm bore when an application requires approximately 628 N of push force at 0.5 MPa, stepping up from a 32 mm bore (402 N) if you need extra thrust, or down from a 50 mm bore (982 N) to save space. The adjustable 55-65 mm travel window is ideal for machine setups requiring variable end-stops without replacing hardware. It features PT tapered ports and a SUS304 rod, which provides better moisture resistance than standard carbon steel.
When ordering a replacement, verify the 65 mm stroke, 10 mm adjustment range, PT port thread, and -S magnet for CMSE or DMSE sensors. The SAIJ series supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. Because the stroke is under 300 mm, side-load stress is minimal, but external guides are still recommended for heavy lateral loads.
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 SAIJ40BX65-10S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It can reach up to 1130 N of push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the 65 mm nominal stroke by up to 10 mm, creating a usable travel window of 55 to 65 mm. The screw functions as a mechanical stop to fine-tune the end position and does not lock the load without air pressure.
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