Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-30
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 475mm 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
- Stroke475 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-30
The AirTAC SAIJ40X475-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 628 Newtons of push force at 0.5 MPa and utilizes a 16mm SUS304 stainless steel rod with PT tapered port threads. The integrated adjuster screw allows you to mechanically trim the effective travel, creating a precise 445-475mm usable window from the 475mm nominal stroke without adding external stops.
Because the adjuster acts purely as a travel stop at the retract end, it does not hold the load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides, and with a 475mm stroke, an external guide is recommended to prevent excessive side-loading on the rod.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 475 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 SAIJ40BX475-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×475 | 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 SAIJ40BX475-30 Is Used
Machine Commissioning
Dial in the exact 445-475mm end-of-stroke position during setup, allowing perfect alignment of tooling without machining custom spacers.
Product Changeover
Quickly adapt a packaging line for different box sizes by adjusting the retract stop up to 30mm, reducing changeover downtime.
Variable End Stops
Fine-tune the retract position on an assembly fixture to accommodate minor variations in incoming part dimensions.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-30 the Right Cylinder?
Choose this 40mm bore when 628N of push force at 0.5 MPa is sufficient, stepping down from the 50mm bore which provides 982N. The 30mm adjustment range is ideal for fine-tuning end positions during machine commissioning or product changeovers, avoiding the need to swap out a fixed-stroke SAI cylinder. If your application requires true load-holding without continuous air pressure, consider the SAIL or BSAI locking series instead.
For an exact ISO 15552 replacement match, specify a 40mm bore, 475mm stroke, 30mm adjustment, PT ports, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and a SUS304 (B) rod. Note that SAIJ omits the FB, CA, CB, and CR mounting options found on some standard 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 SAIJ40BX475-30 FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628 Newtons of push force and 528 Newtons of pull force. At 0.9 MPa, the push force increases to 1130 Newtons.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from 475mm down to 445mm. It functions as a travel stop and deceleration point, not a load-holding lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.