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 SI125X445S Standard Cylinder Specifications
- Model: SI125X445S
- Type: ISO 15552 compliant double-acting cylinder
- Bore size: 125mm
- Stroke: 445mm
- Operating pressure: 0.05-1.0 MPa
- Piston speed: 50-800 mm/s
- Cushioning: Adjustable air cushion (both ends)
- Port size: G1/2 (NPT 1/2 optional)
- Rod thread: M30×1.5 external
- Ambient temperature: -20℃ to 80℃
- Seal material: NBR (nitrile rubber)
- Body material: Aluminum alloy (anodized)
- Weight: 23.6 kg (including mounting accessories)
- Dimensions: 808mm(L) × 142mm(W) × 142mm(H)
- Piston rod diameter: 40mm (chromed steel)
- Mounting types: Basic MF1, optional flange/clevis/foot
- Protection class: IP65 (standard wiper seal)
High-performance industrial cylinder optimized for heavy-duty applications requiring precise linear motion control. Features enhanced side load capacity through integrated guide bushing design and corrosion-resistant hard anodized surface. Includes magnetic piston for position sensing compatibility.
- Automotive assembly line clamping systems
- Steel mill material handling equipment
- Plastic injection molding machine ejectors
- Paper processing machinery actuators
- Heavy-duty press brake tooling systems
- Use locknuts with 180-220 N·m torque for rod-end connections
- Maintain 0.5mm minimum clearance between magnetic sensor and cylinder body
- Lubricate with ISO VG32 hydraulic oil if operating below 0.3 MPa
- Install air filter regulator with ≤25μm filtration
| Property | Property Value |
|---|---|
| sku | SI125X445S |
| 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 | S-Magnetic |
| Bore Diameter | 125mm |
| Stroke | 445mm |
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.









