Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-40
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX75-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 75mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke75 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-40
The AirTAC SAIJ40X75-40 is a double-acting ISO 15552 profile cylinder featuring a rear mechanical stroke adjuster. It provides a nominal 75mm travel that can be fine-tuned down by up to 40mm, yielding a usable stroke window of 35 to 75mm to perfectly dial in end positions during machine commissioning.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, though this specific SKU omits the internal magnet. It uses PT tapered port threads (G1/4) and relies on adjustable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 SAIJ40AX75-40 Is Used
Machine Setup & Changeover
Dial in the exact 35 to 75mm travel window during product size changeovers without swapping the physical cylinder or repositioning hard stops.
End-Position Tuning
Fine-tune the retract stroke by up to 40mm at commissioning to compensate for mechanical tolerance stack-ups in the fixture assembly.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-40 the Right Cylinder?
The adjustable stroke is highly beneficial for product changeovers or setups where the exact end-of-travel point needs on-the-fly tweaking without physically swapping out the cylinder or adding bulky external stops.
When replacing an ISO 15552 cylinder, match the 40mm bore, 75mm nominal stroke, 40mm adjustment range, PT port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Remember that the rear adjuster acts only as a travel stop; it will not hold a load without live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series instead.
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 SAIJ40AX75-40 FAQ
The rear adjuster screw acts as a mechanical stop that can trim the effective travel back by up to 40mm. This turns the 75mm nominal stroke into an adjustable 35 to 75mm window, allowing precise end-position tuning without replacing the cylinder.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.