Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-40
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-40
The AirTAC SAIJ40X90-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 90 mm nominal stroke by up to 40 mm. This creates a precise 50-90 mm usable travel window, perfect for fine-tuning end positions during commissioning without swapping out hardware. It delivers 879 N of push force at 0.7 MPa, utilizing a G1/4 port and a 16 mm rod.
Built with a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance, this extruded aluminum profile cylinder integrates variable air cushions at both ends to manage deceleration. It supports a speed range of 30-800 mm/s and accepts PT tapered port threads. The rear adjuster functions strictly as a travel stop to set the retract position, not as a locking mechanism to hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 90 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 SAIJ40AX90-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 SAIJ40AX90-40 Is Used
Machine Changeover
Dial in the 50-90 mm travel window during product size transitions to set new retract stops without adding external shims.
End-Position Tuning
Fine-tune the final retract position at commissioning to dial out mechanical tolerance and achieve exact placement.
Variable End Stops
Adjust the stroke limit on the fly for automated lines handling multiple part lengths within the 40 mm trim range.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-40 the Right Cylinder?
Selecting this 40 mm bore over a smaller 32 mm variant steps the thrust up from 563 N to 879 N at 0.7 MPa, while moving to a 50 mm bore would yield 1374 N if your payload demands more push force. The 40 mm adjustment range on this 90 mm stroke is ideal for product-size changeovers on a line, providing a wide 50-90 mm variable end-stop window. If your process requires the cylinder to hold its position without continuous air pressure, note that the SAIJ adjuster is only a stop; you would need an external rod lock or a related SAIL pneumatic lock cylinder.
As a dimensionally interchangeable ISO 15552 cylinder, this model matches standard mounting footprints using a reduced SAIJ bracket set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). To complete your setup, specify the 90 mm stroke, 40 mm adjustment, PT port thread, SUS420J2 rod material, and confirm no magnet is required if proximity sensing is not needed.
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 SAIJ40AX90-40 FAQ
At 0.7 MPa operating pressure, this 40 mm bore cylinder provides 879 N of push force and 528 N of pull force. At 0.5 MPa, it delivers 628 N push and 528 N pull.
The rear adjuster screw acts as a mechanical stop that shortens the 90 mm nominal stroke by up to 40 mm, providing a usable travel window of 50-90 mm. It sets the retract end position but does not lock the load without live air.
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 SAIJ40AX90-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.