Equipment Series
Metso Cone Crushers
METSO · Part Details
Lower Head Bushing
Lower Head Bushing
Identify parts for Metso cone crushers, check models and drawing, confirm materials and processes, and submit an inquiry.
Equipment and Applicable Models
Identify the installed machine model and key dimensions, then check the drawing revision and physical interfaces.
Models and Key Dimensions
Metso HP Series (HP100-HP800), GP Series (GP100-GP550) and MP Series
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.
C95400 aluminum bronze (ASTM B148)
Aluminum bronze sand casting; verify composition, as-cast or heat-treated condition and mechanical properties against ASTM B148 and the drawing.
Centrifugally cast C95400 aluminum bronze
Centrifugally cast bushing; verify casting quality, heat treatment condition and load-bearing design against the drawing.
C93200 leaded tin bronze (SAE 660)
Offers seizure resistance and particle embeddability; the specified lubrication conditions must be maintained.
Wear Characteristics and Replacement
Common wear modes and maintenance advice. The actual replacement interval depends on duty, material and operating data.
Common wear modes
- Head gyration causes oval bushing bore wear, with faster wear in the direction of movement.
- Inadequate lubrication causes direct metal contact between the bushing and main shaft.
- Contaminated lubricant causes surface scoring and grooves.
- Fretting between the bushing outside diameter and housing bore loosens the fit.
Replacement criteria
Measure bushing bore ovality and fit clearance, and assess replacement against the maintenance limits for the model. Inspect the bushing if head movement is abnormal or copper particles in the oil increase. Install with correctly positioned oil grooves and clear lubrication passages.
Material and Process Control
Materials, heat treatment, composite processes and inspection follow the specific drawing, duty and technical review.
Material Grade / Substrate
C95400 aluminum bronze (ASTM B148), centrifugally cast C95400 aluminum bronze, or C93200 leaded tin bronze (SAE 660)
Heat Treatment Condition
Follow the applicable standard for the material grade; confirm heat treatment and hardness requirements against the drawing
Composite / Hardfacing Requirements
Bronze bushings are not suitable for weld overlay repair. Replace the worn bushing as a complete part; surface repair is not recommended.
Dimensions and Inspection
Manufacture to drawings produced from part measurements or supplied by the customer. Critical mating surface tolerances follow OEM requirements. Use UT/MT inspection to assess castings for shrinkage porosity and cracks against the agreed acceptance criteria.
Parts with the same name may not be interchangeable across models, drawing revisions, interfaces and materials. Confirm the full model, serial number and drawings before manufacture.