Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 375mm 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
- Stroke375 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-30S
The AirTAC SAIJ40X375-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 375 mm travel that can be fine-tuned down by 30 mm, giving operators a precise 345-375 mm usable stroke window during commissioning. In the 40 mm bore class, it generates 879 N of push force and 528 N of pull force at 0.7 MPa.
This variant uses a SUS304 stainless steel rod (option B) for superior corrosion resistance and includes a magnet for position sensing. The extruded aluminum barrel integrates sensor grooves on both sides, accepting AirTAC CMSE reed and DMSE electronic solid-state switches. It operates at speeds of 30-800 mm/s with PT tapered port threads.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 375 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 SAIJ40BX375-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×375 | 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 SAIJ40BX375-30S Is Used
Commissioning End-Tuning
Dial in the exact 345-375 mm travel window during machine commissioning to perfect end-of-stroke positioning without machining external stopper blocks.
Product Size Changeover
Quickly adapt the cylinder's effective stroke on packaging lines when switching to different product lengths, minimizing downtime between production runs.
Corrosion-Resistant Automation
Leverage the SUS304 stainless steel rod in humid or washdown environments while maintaining standard ISO 15552 mounting interchangeability.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-30S the Right Cylinder?
Select this 40 mm bore adjustable cylinder when a machine setup requires exact end-position tuning without swapping physical cylinders or adding external stops. If your application needs less force, stepping down to a 32 mm bore yields 563 N push at 0.7 MPa; if higher thrust is required, moving up to a 50 mm bore provides 1374 N.
Because the 375 mm stroke is relatively long, ensure external guidance is used to prevent excessive side-load on the M12x1.25 rod thread. The rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. This SAIJ model is dimensionally interchangeable per ISO 15552 and supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ40BX375-30S 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 1130 N of push force at 0.9 MPa.
The rear adjuster screw acts as an external stopper, allowing you to shorten the effective travel from the nominal 375 mm down to 345 mm. This creates a 30 mm tuning window for precise positioning, though it does not lock the load without continuous air pressure.
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 SAIJ40BX375-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.