Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 35mm 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
- Stroke35 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10S
The AirTAC SAIJ40X35-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 35 mm nominal stroke by up to 10 mm. This creates a precise 25-35 mm usable travel window, perfect for fine-tuning end positions at commissioning without swapping out the cylinder. In the 40 mm bore class, it delivers 628 N of push force and 528 N of pull force at 0.5 MPa.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. You can pair it with AirTAC CMSE reed or DMSE solid-state switches fitted into the sensor grooves on both sides of the extruded aluminum barrel. It uses a PT tapered G1/4 port and offers adjustable air cushions at both ends to manage deceleration.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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 SAIJ40BX35-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 SAIJ40BX35-10S Is Used
Machine Setup Tuning
Dial in the exact 25-35 mm travel window during initial commissioning to perfect end-stop positions without adding external spacers.
Product Changeover
Quickly adjust the retract stroke by up to 10 mm on the production line when switching between slightly different product sizes.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for reliable clamping and positioning in washdown or mildly corrosive manufacturing settings.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10S the Right Cylinder?
Select this 40 mm bore adjustable-stroke cylinder when your application requires exact end-position tuning during machine setup or product changeover, rather than relying on a fixed-stroke SAI model. If your process requires less force, stepping down to a 32 mm bore yields 402 N of push force at 0.5 MPa; for heavier loads, stepping up to a 50 mm bore provides 982 N. Keep in mind that the rear adjuster acts strictly as a travel stop and does not hold the load without live air pressure. For true load-holding without continuous air, consider an AirTAC SAIL or BSAI cylinder instead.
This configuration includes a -S magnet for CMSE/DMSE sensors, a PT thread type, and a SUS304 stainless steel rod. The mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories, dimensionally interchangeable with ISO 15552 cylinders.
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 SAIJ40BX35-10S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At the maximum pressure of 1.0 MPa, it can deliver up to 128 kgf.
A rear external adjusting screw acts as a stopper, allowing you to shorten the 35 mm nominal stroke by up to 10 mm. This provides a usable travel window of 25-35 mm for fine-tuning without replacing the cylinder.
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