Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-50S
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX75-50S 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 SAIJ40AX75-50S
The AirTAC SAIJ40X75-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a usable travel window of 25-75 mm, letting you dial back the 75 mm nominal stroke by up to 50 mm. The barrel is extruded aluminum with sensor grooves on both sides.
This variant features an SUS420J2 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. It uses PT tapered G1/4 ports and offers variable air cushions at both ends. The rear adjuster acts purely as a travel stop for end-position tuning, not a load-holding lock.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-50S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-50S |
|---|---|
| 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 SAIJ40AX75-50S
| 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 SAIJ40AX75-50S Is Used
Changeover Tuning
Dial in the exact 25-75 mm travel window during product size changeovers without machining new hard stops.
Sensor Setup
Leverage the -S magnet and dual sensor grooves to mount CMSE or DMSE switches for precise end-of-travel signaling.
Machine Commissioning
Fine-tune the retract end position during initial machine setup to absorb mechanical tolerances instantly.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX75-50S the Right Cylinder?
Choose this 40 mm bore when you need precise end-position tuning during commissioning or product changeover without swapping cylinders or adding external stops. For higher force demands, stepping up to a 50 mm bore provides 982 N.
This SAIJ model is dimensionally interchangeable per ISO 15552. To match this configuration, specify a 40 mm bore, 75 mm stroke, 50 mm adjustment, PT G1/4 port, SUS420J2 rod, and a -S magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that a plain SAIJ does not hold loads without live air; for drop prevention, consider SAIL or BSAI 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 SAIJ40AX75-50S FAQ
At 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw acts as an external stopper, allowing you to shorten the effective stroke from 75 mm down to 25 mm. This creates a 25-75 mm usable travel window for fine-tuning end positions at commissioning without replacing the cylinder.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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