Airtac SAIJ40 Adjustable Cylinder SAIJ40AX85-10
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX85-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 85mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke85 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX85-10
The AirTAC SAIJ40X85-10 is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 85 mm stroke that can be fine-tuned down by up to 10 mm, giving operators a precise 75-85 mm usable travel window during commissioning.
This variant features an SUS420J2 stainless steel rod (code A) for improved corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, and fluid connections use PT tapered threads sized at G1/4. The rear adjuster acts purely as a mechanical stop to set the retract end position, meaning it does not hold the load dynamically without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX85-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX85-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 85 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX85-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×85 | 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 SAIJ40AX85-10 Is Used
Machine Changeover
Dial in the 75-85 mm travel window during format changes without replacing the cylinder or adding external shims.
End-Stop Calibration
Use the rear mechanical stop to precisely set the retract position for machining operations requiring tight tolerances.
Assembly Line Timing
Adjust the stroke on the fly to sync pick-and-place movements with varying product sizes on the conveyor.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX85-10 the Right Cylinder?
The 10 mm adjustment range is ideal for applications requiring slight end-position calibration during product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder or bolt on external stops. To match this exact ISO 15552 replacement, specify: 40 mm bore, 85 mm stroke, 10 mm adjustment, PT G1/4 port, and no magnet. If your process requires the load to be held mechanically without continuous air pressure, consider the SAIL or BSAI locking cylinder series instead, as the SAIJ adjuster is not a brake. Because the stroke is under 300 mm, side-load stress on the M12x1.25 rod thread is minimal, though external guidance is 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 SAIJ40AX85-10 FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 10 mm, creating a 75-85 mm travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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