Bottom Shell Bushing
Bottom Shell Bushing
METSO · Part Details
Gyratory Crusher Main Shaft and Hydraulic Bushing Systems
Gyratory Crusher Mainshaft and Hydroset Bushing System
Identify parts for Metso gyratory crushers, check models and drawing numbers, confirm materials and processes, and submit an inquiry.
Key Parts Covered
This page identifies installation positions that share the same wear-resistant material and manufacturing process requirements.
Upper Hydraulic Cylinder Bushings
Upper Hydroset Bushing
Lower Hydraulic Cylinder Bushings
Lower Hydroset Bushing
Materials and Processes
Select the material grade and heat treatment for the operating conditions, processed material and equipment specifications. The options below are commonly used; confirm the final grade against the drawing and technical agreement.
Manganese bronze
Select materials to suit OEM specifications and operating conditions; confirm the final grade and heat treatment against the drawing.
C95400 aluminum bronze (ASTM B148)
Select materials to suit OEM specifications and operating conditions; confirm the final grade and heat treatment against the drawing.
Copper–steel bimetal bushings
Select materials to suit OEM specifications and operating conditions; confirm the final grade and heat treatment against the drawing.
Wear and Replacement Criteria
Common wear patterns and maintenance guidance are outlined below. Determine replacement intervals from operating conditions, processed material and equipment performance data.
Common Wear Patterns
- Eccentric loading causes uneven wear of the bushing bore
- Inadequate lubrication causes surface scoring and seizure
- Contaminated lubricant causes surface grooving
- A loose fit between the bushing and housing bore causes fretting wear
Replacement Criteria
Assess replacement against the bushing bore and clearance limits in the equipment drawings. Inspect and take corrective action if seizure marks appear or copper debris in the lubricant remains elevated.
Equipment, Models and Drawing References
Identify the installed machine model and key dimensions, then check the part number, drawing number, drawing revision and physical interfaces.
Equipment Series
Metso Gyratory Crusher
Models and Key Dimensions
Metso Superior MK-I/MK-II/MK-III 42-65/50-65/54-75/62-75/60-89/60-110/70-89
Drawing Number / Part Number
Provide the equipment nameplate, complete model and existing part number so that the installation position and drawings can be checked.
Drawing Revision
Confirm dimensions by measuring the sample or using the customer drawing. Cross-check the drawing revision against the model on the equipment nameplate.
Materials and Processes
Materials, heat treatment, composite construction and inspection requirements depend on the specific drawing, operating conditions and technical review.
Material Grade / Substrate
Manganese bronze / C95400 aluminum bronze (ASTM B148) / copper–steel bimetal bushings
Heat Treatment Condition
Follow the applicable standard for the material grade; confirm heat treatment and hardness requirements against the drawing
Composite / Hardfacing Requirements
Follow OEM design requirements; confirm any hardfacing or composite construction against the drawing
Dimensions and Inspection
Inspect key dimensions against the drawing for the OEM part number. Check mounting and sealing surfaces individually and perform UT/MT non-destructive testing on castings.
Parts with the same name may not be interchangeable because of differences in machine model, drawing revision, mounting interface or material specification. Use the complete model, serial number, drawing number and drawing before manufacture.