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 SI125X500SFA Standard Cylinder Specifications
- Model: SI125X500SFA
- Bore size: 125mm
- Stroke: 500mm
- Operating pressure: 0.05–1.0 MPa
- Cushion type: Adjustable air cushion (SFA designation)
- Mounting style: Basic type (MF1) with front flange
- Port size: G1/2 (standard) or optional NPT1/2
- Operating temperature: -20℃ to 80℃
- Piston material: High-grade aluminum alloy with hard anodizing
- Rod material: Chrome-plated steel (Cr-Mo)
- Seal type: NBR seals (standard), optional FKM for high temp
- Weight: 18.5kg ±3% (excluding accessories)
- Dimensions:
- Extended length: 1120mm
- Retracted length: 620mm
- Body diameter: 142mm (max OD)
- Mounting base: 160×160mm square pattern
- Rod thread: M33×2.0 external thread
- Lubrication: Pre-lubricated (recommended relubrication every 200km stroke)
- ISO standard: 15552 compliant
High-torque industrial cylinder designed for heavy-duty linear motion applications. Features double-acting operation with corrosion-resistant construction and precision honed tube. Integrated magnetic piston enables position sensing compatibility. Requires 5μm filtered air with ISO 8573-1:2010 Class 3.4.3 air quality.
- Automotive production line clamping systems
- Steel mill material handling gates
- Plastic injection molding machine ejectors
- Paper processing equipment actuators
- Shipbuilding jig positioning systems
1. Ensure 0.5° maximum angular misalignment during mounting
2. Use flexible couplings for stroke ≥400mm applications
3. Maintain 1.5× bore size clearance for rod extension
4. Apply silicone-free lubricant (VG32 grade) during maintenance
| Property | Property Value |
|---|---|
| sku | SI125X500SFA |
| 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 | 500mm |
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.









