Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 260mm 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
- Stroke260 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100S
The AirTAC SAIJ40X260-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from 260 mm to a minimum of 160 mm. This 100 mm adjustment window is ideal for product changeovers, letting you set precise retract end positions without adding external stops. It delivers 628 N of push force at 0.5 MPa and features a SUS304 stainless steel rod for superior corrosion resistance.
Equipped with a magnet for position sensing, this unit works seamlessly with AirTAC CMSE reed and DMSE solid-state switches fitted into the dual-side sensor grooves. The rear adjuster acts purely as a mechanical stop to set the travel end; it does not lock or hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 260 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 SAIJ40BX260-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×260 | 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 SAIJ40BX260-100S Is Used
Product Changeover
Dial in the exact retract distance from 160 to 260 mm when switching product sizes on a packaging line, eliminating the need for physical shimming.
Machine Setup
Fine-tune the end-of-stroke position during commissioning to perfectly time a pressing or pushing action without swapping out the cylinder body.
Variable End Stops
Adjust the travel distance on the fly for diverter gates or sorting mechanisms that must handle differently sized items on the same conveyor.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100S the Right Cylinder?
Select this 40 mm bore when your application needs 628 N of push force at 0.5 MPa, stepping up from a 32 mm bore that provides 402 N, or down from a 63 mm bore yielding 1559 N. The 160-260 mm adjustable travel window is perfect for variable end-stops, whereas a fixed SAI cylinder requires manual shimming for product size changes. This SAIJ model uses PT tapered ports and a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Since the 260 mm stroke is relatively long, ensure you use an external guide to prevent excessive side-loading on the M12x1.25 rod thread.
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 SAIJ40BX260-100S 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 lets you shorten the nominal 260 mm stroke by up to 100 mm, creating a usable travel window of 160 to 260 mm. This stopper sets the travel end but does not lock the load without continuous air pressure.
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