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 SI125AX850S Standard Cylinder Specifications
- Model: SI125AX850S
- Type: ISO 15552 compliant double-acting cylinder
- Bore size: 125 mm
- Stroke: 850 mm (customizable up to 2,000 mm)
- Operating pressure: 0.05–1.0 MPa
- Temperature range: -20℃ to 80℃
- Cushioning: Adjustable air cushion at both ends
- Port size: G1/2 (NPT 1/2 optional)
- Mounting: Standard ISO 15552 mounting interfaces (front flange, rear foot, etc.)
- Material: Aluminum alloy barrel (hard anodized), hardened steel piston rod
- Seal material: NBR + polyurethane combination
- Protection rating: IP65 (rod seal), IP40 (entire cylinder)
- Lubrication: Pre-lubricated (recommended relubrication every 3 months)
- Weight: 18.7 kg (with standard accessories)
- Dimensions: 1,160mm(L) × 160mm(W) × 160mm(H) (full extension)
High-force industrial cylinder designed for heavy-duty applications requiring long stroke precision. Features corrosion-resistant construction with chromium-plated piston rod (25μm thickness) and wear-resistant bearing bands. Integrated magnet for position sensing compatibility (SI-M series sensors optional).
- Automotive production line clamping fixtures
- Steel mill material handling systems
- Injection molding machine ejectors
- Paper processing equipment actuators
- Hydraulic press auxiliary positioning
- Theoretical thrust: 7,350N (extend)
- Theoretical pull force: 6,615N (retract)
- Maximum piston speed: 0.1–1.5 m/s
| Property | Property Value |
|---|---|
| sku | SI125AX850S |
| 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 | S-Magnetic |
| Bore Diameter | 125mm |
| Stroke | 850 mm |
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.









