Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-75S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 200mm 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
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-75S
The AirTAC SAIJ40X200-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 628N push and 528N pull thrust at 0.5MPa. The 75mm adjustment screw trims the 200mm nominal stroke, providing a usable travel window of 125-200mm for precise end-position tuning during commissioning.
This variant includes a SUS304 stainless steel rod for corrosion resistance and a magnet for CMSE reed or DMSE electronic sensors. The rear adjuster acts strictly as a travel stop for deceleration, meaning it will not hold a load without live air pressure. It uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and PT G1/4 ports.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-75S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 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 SAIJ40BX200-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 SAIJ40BX200-75S Is Used
Machine Changeover
Dial in the 125-200mm travel window instantly when switching product sizes on a conveyor line, avoiding mechanical retooling.
End-Stop Tuning
Fine-tune the retract end-position at commissioning using the rear screw stopper, absorbing mechanical variance without external shims.
Sensor Feedback
Leverage the integrated magnet with DMSE solid-state sensors to confirm the adjusted end-of-stroke position in harsh environments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-75S the Right Cylinder?
Choose this 40mm bore when an application requires 628N push force at 0.5MPa but demands on-the-fly stroke modifications without swapping cylinders. The 75mm adjustment range is ideal for product changeovers on a packaging line. If you need higher force, step up to the 50mm bore (982N push at 0.5MPa). Since the 200mm stroke is under 300mm, side-load risks are moderate, but an external guide is still recommended for heavy loads. For load-holding without air, select a SAIL or BSAI cylinder instead. To match ISO 15552 replacements, specify 40mm bore, 200mm stroke, 75mm adjust, PT G1/4 port, and the -S magnet.
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 SAIJ40BX200-75S FAQ
At 0.5MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. At 0.7MPa, the push force increases to 879N.
The rear adjuster screw acts as a mechanical stop that shortens the 200mm nominal stroke by up to 75mm, creating a usable travel window of 125-200mm. It functions as a stop and does not lock or hold the load without live air pressure.
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