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 SI125BX375 Standard Cylinder Specifications
- Model: SI125BX375
- Bore size: 125 mm
- Stroke: 375 mm
- Operating pressure: 0.05–1.0 MPa
- Piston speed: 50–800 mm/s
- Action type: Double-acting
- Cushioning type: Adjustable air cushion (both ends)
- Mounting style: Basic type (MF1) with foot mounting holes
- Port size: G1/2 (ISO standard)
- Piston rod material: Hard chrome-plated steel
- Tube material: Anodized aluminum alloy
- Seal material: NBR (Nitrile rubber)
- Temperature range: -20℃ to 80℃
- Weight: 12.8 kg (with standard accessories)
- Dimensions:
- Total length: 621 mm (stroke 375 + 246mm fixed ends)
- Body diameter: Φ125 mm
- Mounting base: 160×160 mm square pattern
- Sensor compatibility: Built-in magnet for magnetic switch (SI-M series)
- ISO standard: Compliant with ISO 15552
A heavy-duty pneumatic cylinder designed for high-force linear motion applications. Features precision-machined aluminum construction with corrosion-resistant treatment, offering smooth operation and extended service life. The adjustable air cushion minimizes impact noise and vibration at stroke ends. Dual piston seals ensure leak-free performance even under fluctuating pressure conditions.
- Automated assembly line material handling
- Press machine actuation systems
- Packaging equipment clamping mechanisms
- Foundry plant mold ejection units
- Automotive welding fixture positioning

- Ensure proper alignment of piston rod and load (max angular misalignment ≤0.5°)
- Use clean dry air with 40μm filtration and lubricator (ISO 8573-1 class 4-4-3)
- Apply anti-rotation mechanism for non-guided applications
- Lubricate rod weekly in high-cycle applications (>500 cycles/day)
Property | Property Value |
---|---|
sku | SI125BX375 |
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 | SUS304 |
Magnet | Non-magnetic |
Bore Diameter | 125mm |
Stroke | 375mm |
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.