HP200 Countershaft Bushing (1022061401) – High-Lead Bronze C93800

The countershaft bushing is a critical component within the drive system of the Metso HP200 cone crusher. It provides the necessary bearing surface for the high-speed rotation of the countershaft, ensuring stable power transmission from the drive sheave to the pinion gear. This specific spare part is engineered to withstand constant radial loads and high-frequency vibrations in demanding secondary and tertiary crushing applications.

Engineering and Metallurgical Standards

Unlike standard aftermarket bushings produced via sand casting, our 1022061401 bushings are manufactured using vertical centrifugal casting. This process significantly increases the density of the metal matrix, eliminating internal gas pockets and shrinkage porosity that can lead to premature failure.

• Material Grade: We utilize high-lead tin bronze (ASTM B505 C93800). The significant lead content serves as a built-in emergency lubricant, protecting the countershaft journals during intermittent lubrication film breakdown or cold starts.
• Dimensional Precision: Machined to IT7 tolerance standards to ensure exact concentricity. This prevents shaft run-out, which is the primary cause of excessive vibration and premature wear on the pinion-gear mesh.
• Friction Management: The inner surface is finished to Ra 1.6 micrometers, facilitating the rapid establishment of a stable hydrodynamic oil film.

Technical Specifications

• OEM Part Number: 1022061401
• Compatible Machine: Metso Nordberg HP200
• Material: C93800 High-Lead Bronze
• Casting Process: Centrifugal Casting
• Net Weight: 8.5kg
• Hardness: 70 to 85 HBW

Engineer Advice: Installation and Maintenance

Field data indicates that over 70 percent of countershaft bushing failures result from improper installation or lubrication neglect. To maximize service life, we recommend the following technical protocols:

1. Interference Fit Management

The bushing is designed with a specific interference fit. Do not use mechanical impact (hammers) for installation, as this can deform the bronze shell and lead to uneven heat generation. We recommend the dry ice shrink-fit method. Cooling the bushing for 2 to 4 hours will reduce its diameter sufficiently for a slide-in installation, ensuring 100 percent surface contact with the countershaft box.

2. Monitoring Thermal Delta

Always monitor the oil return temperature. A sudden rise in the temperature differential between the inlet and outlet oil is a leading indicator of bushing friction. If the return oil contains visible bronze particles, the bushing has likely suffered adhesive wear and requires immediate inspection to prevent damage to the countershaft itself.

Logistics and Assurance

Every bushing undergoes spectrometer analysis to verify alloy composition before shipping. Each unit is packed in a reinforced polywood case to prevent dimensional distortion during international transit. Our parts are guaranteed to be fully interchangeable with original components in machines maintaining OEM dimensions.