2. Features wear-resistant Y-shaped axial sealing structure with cushioning function, extended service life, and low friction resistance;
3. Aluminum square tube profile with anodized tie rods for superior corrosion resistance;
4. Built-in adjustable pneumatic cushioning at both ends;
5. Multiple cylinder specifications and mounting accessories available for flexible configurations.
Category: Standard Cylinders | Brand: AirTAC | Series: SI40
AirTAC SI40AX55S Standard Cylinder Specifications
- Model: SI40AX55S
- Type: ISO 6432 compliant single-acting spring return cylinder
- Bore size: 40 mm
- Stroke: 55 mm (customizable 5-500mm)
- Operating pressure: 0.05–1.0 MPa
- Cushioning: Adjustable rubber buffer + shock absorber
- Port size: M5x0.8 (standard) or NPT1/8 (optional)
- Rod end thread: M10x1.25 (external)
- Max thrust: 125.6 N @ 0.63 MPa
- Ambient temperature: -20℃ to 80℃
- Seal material: NBR (nitrile) with wear-resistant guide rings
- Body material: Anodized aluminum alloy (tube), hardened steel piston rod
- Weight: 0.68 kg (without accessories)
- Dimensions: 194mm(L) × 40mm(Bore) × 62mm(Mounting height)
- Mounting type: AX series - Front flange with mounting holes (ISO 15552)
- Position detection: Built-in magnet for sensor attachment (S suffix)
A high-cycle pneumatic actuator featuring precision honed tubing and chrome-plated piston rod. The self-lubricating bushings ensure smooth operation up to 1,500 km service life. Designed for applications requiring precise linear motion with repeatability ±0.5mm. Includes dual cushioning adjustment screws for optimized end-stroke deceleration.
- Automated packaging machine clamping mechanisms
- CNC machine tool door interlocks
- Pharmaceutical blister sealing presses
- Automotive assembly line part positioning
- Electronics PCB press-fit operations
| Property | Property Value |
|---|---|
| sku | SI40AX55S |
| Seal Material | Polyurethane |
| Understood. Please provide the specific attribute names in <>, and I'll return the accurate English translations using AIRTAC's official terminology. Example: User input: <缸径> My output: Bore | Operating Temperature: -20℃ to 80℃ Speed Range: 30-800 mm/s |
| Port Size | PT1/4 |
| Piston Rod Material | SUS420J2 |
| Magnet | S-Magnetic |
| Bore Diameter | <40mm> |
| Stroke | 55mm |
Returns will be accepted for up to 15 days of Customer’s receipt or tracking number on Not used items. You, as a Customer, are obliged to inform us via email before you return the item, only in the case of:
- Received the wrong item.
- Item arrived not as expected (ie. damaged packaging).
- Item had defects.
- Over delivery time.
- The shipper does not allow the goods to be inspected before payment.
The returned product(s) must be in the original packaging, safety wrapped, undamaged and unworn. This means that the item(s) must be safely packed in a carton box for protection during transport, possibly the same carton used to ship to you as a customer.









