Airtac SAIJ40 Adjustable Cylinder SAIJ40BX70-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX70-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 70mm 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
- Stroke70 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX70-10
The AirTAC SAIJ40X70-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 60-70 mm usable travel window from the 70 mm nominal stroke. Delivering 628 N of push force at 0.5 MPa, it bridges the gap between smaller 32 mm bores and 50 mm classes. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This variant is configured with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The rear adjuster allows precise end-position tuning during commissioning without adding external stops, acting purely as a travel limiter rather than a load-holding lock.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX70-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX70-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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 SAIJ40BX70-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 SAIJ40BX70-10 Is Used
End-Stop Calibration
Dial in the exact 60-70 mm retract position during machine commissioning without swapping out the physical cylinder.
Product Changeover
Quickly adjust the end-stop by up to 10 mm to accommodate minor size variations on a production line.
Fixture Positioning
Leverage the 628 N push force and SUS304 rod to precisely position stainless fixtures in varying environments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX70-10 the Right Cylinder?
Choose this 40 mm bore when an application requires approximately 628 N push force at 0.5 MPa, stepping up from a 32 mm bore (402 N) without the full bulk of a 50 mm bore (982 N). The 10 mm adjustment range is ideal for fine-tuning the retract end-position during machine setup or product changeover, providing flexibility that a fixed-stroke SAI cylinder cannot match. For holding loads without live air pressure, consider the SAIL or BSAI series, as the SAIJ adjuster is a stop, not a lock.
As a dimensionally interchangeable ISO 15552 cylinder, it matches standard mounting footprints using the Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessory set (omitting FB, CA, CB, and CR). Ensure your setup provides adequate external guiding if side loads are anticipated.
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 SAIJ40BX70-10 FAQ
It features a rear adjusting screw that allows you to shorten the effective stroke by up to 10 mm, creating a usable travel window of 60 to 70 mm. This lets you fine-tune the end position at commissioning without external stops.
At 0.5 MPa operating pressure, the SAIJ40X70-10 provides 628 N of push force and 528 N of pull force. It can deliver up to 1130 N of push force at 0.9 MPa.
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 SAIJ40BX70-10
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.