Airtac SI125 Standard Cylinder SI125AX20S
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 SI125AX20S Standard Cylinder Specifications
- Model: SI125AX20S
- Bore size: 125 mm
- Stroke: 20 mm
- Operating pressure: 0.05–1.0 MPa (7-145 psi)
- Cushion type: Adjustable pneumatic cushion (both ends)
- Operating temperature: -20℃ to 80℃
- Port size: Rc1/4 (G1/4 optional)
- Piston rod thread: M20×1.5
- Cylinder material: Aluminum alloy barrel, hardened steel piston rod
- Seal material: NBR (nitrile rubber) standard, optional PU seals
- Weight: 3.8 kg (±2%)
- Dimensions:
- Total length (L): 230 mm (at mid-stroke)
- Body diameter (W): 140 mm (max cross-section)
- Height with mounts (H): 155 mm (including base brackets)
- Piston speed: 50–800 mm/s
- Lubrication: Pre-lubricated (oil-free operation possible)
- Mounting options: Basic type (AX series) with front flange & rear foot mounting
- Accessories: Built-in magnet for magnetic switch (SI-M series compatible)
A heavy-duty ISO standard cylinder featuring double-acting operation and precision honed inner tube surface (Ra≤0.4μm). The chrome-plated piston rod (HRC 45-55) incorporates a wear-resistant coating, while the multi-lip seal design ensures ≤0.5 mL/min internal leakage. Ideal for vertical mounting configurations requiring high moment resistance.
- Metal stamping press ejection systems
- Automotive welding fixture clamping
- Packaging machine lid pressing mechanisms
- Foundry equipment core shooting
- Plastic injection molding machine auxiliary actuators
Installation note:
For vertical installations exceeding 45° tilt, install an external guide mechanism.
Maintain 0.5–1 mm clearance between rod end and load during alignment.
Lubricate rod weekly in high-cycle applications (>500,000 cycles/month).
| Property | Property Value |
|---|---|
| sku | SI125AX20S |
| 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 | <20mm> |
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.