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 SI125X400LB Standard Cylinder Specifications
- Model: SI125X400LB
- Bore size: 125 mm
- Stroke: 400 mm
- Operating pressure: 0.05–1.0 MPa
- Cushioning type: Adjustable air cushion (both ends)
- Port size: G1/2 (ISO standard)
- Operating temperature: -20℃ to 80℃
- Piston rod material: Chrome-plated stainless steel (SUS304)
- Tube material: Aluminum alloy (hard anodized)
- Mounting type: Basic front flange (ISO 15552 standard)
- Weight: 18.5 kg ±2%
- Dimensions: 598mm(L) × 140mm(W) × 140mm(H)
- Built-in magnet: Yes (for position sensing)
- Piston speed: 50–800 mm/s
- Lubrication: Pre-lubricated (recommended relubrication every 3,000 km)
High-force industrial cylinder designed for heavy-duty linear motion applications. Features double-acting operation with precision-machined aluminum barrel and corrosion-resistant components. The LB variant includes magnetic piston for position feedback compatibility with inductive sensors (SM/SD series). Optimized for long-stroke applications requiring smooth deceleration.
- Automotive press line material handling
- Steel mill rolling equipment
- Plastic injection molding ejectors
- Paper converting machinery
- Warehouse automated stacking systems
| Property | Property Value |
|---|---|
| sku | SI125X400LB |
| 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 | Medium Carbon Steel |
| Magnet | Non-magnetic |
| Bore Diameter | 125mm |
| Stroke | <400mm> |
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.









