2. Piston features bidirectional Y-seal structure with cushioning function, offering extended service life and low friction resistance;
3. Aluminum barrel with cruciform reinforcement and black-anodized piston rod for enhanced corrosion resistance;
4. Precision machined cylinder surface ensures smooth operation;
5. Multiple cylinder specifications and mounting accessories available for flexible configurations.
Category: Standard Cylinders | Brand: AIRTAC | Series: SI125
AirTAC SI125X40SN Standard Cylinder Technical Specifications
- Model: SI125X40SN
- Type: ISO 15552 compliant double-acting pneumatic cylinder
- Bore size: 125 mm
- Stroke: 40 mm (adjustable cushion)
- Operating pressure: 0.05–1.0 MPa
- Port size: G3/8 (BSPP thread)
- Piston speed: 50–800 mm/s
- Ambient temperature: -20℃ to 80℃
- Cushioning: Adjustable pneumatic cushion (both ends)
- Piston rod material: Chrome-plated carbon steel (S45C)
- Tube material: Anodized aluminum alloy
- Seal material: NBR (nitrile rubber)
- Mounting type: Basic front flange (MF1), optional foot mounting (MA1)
- Magnet type: Built-in magnet for position sensing (SN suffix)
- Weight: 6.5 kg ±2%
- Dimensions (L×W×H):
- Total length: 238 mm (at mid-stroke)
- Stroke-dependent length: 238 + stroke
- Mounting flange: 160×125 mm
- Rod end thread: M20×1.5
High-torque industrial cylinder designed for heavy-duty automation applications. Features corrosion-resistant construction with IP65 protection rating and precision honed tube for smooth operation. Requires 40μm filtered lubricated air (ISO 8573-1 class 4). Optional shock absorber available for high-speed applications (>500 mm/s).
- Automotive production line clamping mechanisms
- Steel mill material handling systems
- Plastic injection molding machine ejectors
- Packaging machine pressurization units
- Foundry equipment actuation
| Property | Property Value |
|---|---|
| sku | SI125X40SN |
| Seal Material | NBR |
| 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°C to 80°C Speed Range: 30-500 mm/s |
| Port Size | PT 1/2 |
| Piston Rod Material | Medium Carbon Steel |
| Magnet | S-Magnetic |
| Bore Diameter | 125mm |
| Stroke | <40mm> |
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.









