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 SI125AX40S Standard Cylinder Specifications
- Model: SI125AX40S
- Bore size: 125mm
- Stroke: 40mm
- Operating pressure: 0.05–1.0 MPa
- Cushioning type: Air cushion (adjustable at both ends)
- Port size: Rc1/2 (G1/2 optional)
- Piston speed: 50–700 mm/s
- Ambient temperature: -20℃ to 80℃
- Mounting style: Basic type (MF1)
- Rod thread: M20×1.5
- Seal material: Polyurethane (NBR optional)
- Weight: 4.6 kg (without accessories)
- Dimensions:
- Extended length: 270mm
- Retracted length: 230mm
- Body diameter: Φ140mm
- Mounting hole spacing: 160×160mm
High-torque industrial cylinder with chromium-plated piston rod (HRC45-50 hardness) and aluminum alloy barrel. Features wear-resistant seals and dual adjustable air cushions for precision positioning. Compatible with ISO 15552 standards, accepts magnetic switches for position feedback.
- Press machine ejection systems
- Heavy-duty clamping in automotive welding lines
- Palletizing robot end effectors
- Steel mill conveyor gate controls
- Injection molding machine core pulls
- Use locknuts with 50-60 N·m torque for mounting
- Maintain 0.5-1mm clearance between rod end and load
- Lubricate with ISO VG32 hydraulic oil if used without dryer
- Avoid side load exceeding 10% of maximum thrust capacity
| Property | Property Value |
|---|---|
| sku | SI125AX40S |
| 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 | <40mm> |
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.









