pulley
Input Pulley for PTO Gearbox
The input pulley is a key transmission component of the PTO gearbox, responsible for transferring power from the engine to the gearbox through V-belts. Designed for heavy-duty agricultural applications, this pulley is manufactured from HT200 gray cast iron, offering excellent strength, vibration damping, and long-term durability. With precision CNC machining and dynamic balance control, it ensures smooth power transmission while minimizing vibration and extending belt service life.
Material: HT200 Gray Cast Iron
HT200 gray cast iron is widely used for industrial pulleys due to its excellent mechanical properties and cost-effective performance. It provides high compressive strength, outstanding wear resistance, and superior vibration absorption compared with steel, helping to reduce transmission noise and protect bearings and belts during continuous operation. In addition, HT200 offers excellent casting performance, allowing complex shapes to be produced with high dimensional accuracy while maintaining consistent quality.
Manufacturing Process
The pulley is produced through a carefully controlled manufacturing process to ensure high strength and precision:
- High-quality HT200 gray cast iron is melted and cast into a one-piece pulley blank.
- After natural aging or stress-relief treatment, the casting achieves improved dimensional stability.
- The pulley is then precision CNC machined, including the outer diameter, bore, keyway, belt grooves, and mounting surfaces.
- Finally, each pulley undergoes dimensional inspection and dynamic balance testing to ensure smooth rotation, reduced vibration, and reliable performance at high operating speeds.
Technical Specifications
- Material: HT200 Gray Cast Iron
- Outer Diameter: 190 mm
- Bore Diameter: 32 mm
- Keyway: 10 mm Parallel Key
- Pulley Type: Triple-Groove V-Belt Pulley
- Belt Groove Width: 17 mm (Suitable for B-section V-belts)
- Overall Thickness: 60 mm
Key Features
- One-piece HT200 cast iron construction for exceptional rigidity and durability.
- Excellent wear resistance for long service life under continuous heavy-load operation.
- Superior vibration damping reduces transmission noise and protects the PTO gearbox.
- Precision CNC-machined bore, keyway, and belt grooves ensure accurate fit and efficient power transmission.
- Triple-groove design increases torque transmission capacity while minimizing belt slippage.
- Dynamic balance testing provides stable, low-vibration operation at high rotational speeds.
- Designed for reliable performance in demanding agricultural and industrial working environments.
