Airtac SAIJ40 Adjustable Cylinder SAIJ40BX275-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX275-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 275mm 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
- Stroke275 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX275-10
The AirTAC SAIJ40X275-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window between 265 and 275 mm without adding external stops. Delivering 879 N of push force at 0.7 MPa, it is equipped with a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread for a reliable seal.
Because the rear adjuster acts purely as a mechanical stop, it does not hold the load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic switches if a magnet is added later.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX275-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX275-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 275 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 SAIJ40BX275-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×275 | 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 SAIJ40BX275-10 Is Used
Machine Setup Tuning
Dial in the exact 265 to 275 mm end-stop during commissioning to perfect product positioning without swapping cylinders.
Product Size Changeover
Quickly adapt the stroke on packaging lines when handling slightly different carton lengths or package depths.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod in light washdown or humid environments where standard carbon steel rods degrade.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX275-10 the Right Cylinder?
Choose this 40 mm bore when 628 N at 0.5 MPa is sufficient, stepping up from a 32 mm bore (402 N) or down from a 50 mm bore (982 N) to optimize air consumption. The 10 mm adjustment range is ideal for product changeovers where exact end-position tuning at commissioning prevents mechanical rework. For true load-holding without live pressure, select a SAIL or BSAI series cylinder instead. As a dimensionally interchangeable ISO 15552 cylinder, match the 40 mm bore, 275 mm stroke, PT port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting set for a direct replacement.
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 SAIJ40BX275-10 FAQ
At 0.7 MPa operating pressure, this 40 mm bore cylinder provides 879 N of push force and 528 N of pull force. It can deliver up to 128 kgf at its maximum 1.0 MPa pressure rating.
The rear adjuster screw lets you shorten the nominal 275 mm stroke by up to 10 mm, creating a 265 to 275 mm usable travel window. It acts as a travel stop and does not lock or hold the load without live air pressure.
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