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 SI125AX40 Standard Cylinder Specifications
- Model: SI125AX40
- Type: ISO 15552 compliant double-acting cylinder
- Bore size: Ø125mm
- Stroke: 40mm (adjustable cushioning)
- Operating pressure: 0.1–1.0 MPa
- Operating medium: Clean compressed air (lubricated or non-lubricated)
- Ambient temperature: -20℃ to +80℃
- Piston speed: 50–800 mm/s
- Cushioning type: Adjustable pneumatic cushion
- Mounting styles: Basic type (AX variant) with front flange
- Port size: G1/2 (ISO 228/1)
- Rod end thread: M20×1.5
- Material: Aluminum alloy barrel, hardened steel piston rod
- Seal material: NBR/PU composite
- Weight: 3.5 kg ±2% (without accessories)
- Dimensions: 350mm(L) × 125mm(W) × 125mm(H)
- Protection rating: IP65 (standard wiper seal)
- ISO cycle durability: 5,000 km (tested under 0.5 MPa)
High-torque industrial cylinder designed for heavy-load applications requiring precise linear motion. Features chromium-plated piston rod with multi-lip wiper seal for contamination resistance. The magnetic piston version (SI125AX40-M9) enables position sensing compatibility. Built-in adjustable cushioning prevents impact damage at stroke ends.
- Press machine ejection systems
- Automotive welding fixture clamping
- Foundry equipment door actuators
- Palletizing robot end-effectors
- Heavy conveyor gate controls
| Property | Property Value |
|---|---|
| sku | SI125AX40 |
| 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°C to 80°C Speed Range: 30-500 mm/s |
| Port Size | PT 1/2 |
| Piston Rod Material | SUS420J2 |
| Magnet | Non-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.









