85763021 Bronze Bushing

Large Precision Machined Bronze Ring Bushing – OD 215mm Heavy-Duty Circle Bushing for Construction Machinery

Engineered for demanding heavy-duty pivot and circle bearing applications, this large precision machined bronze ring bushing delivers exceptional wear resistance, low friction, and long service life. With a measured outer diameter of approximately 215mm and height of approximately 80mm, this substantial copper alloy bushing is designed to handle high radial loads in continuous heavy equipment operation.

Key Features

• Premium Bronze / Brass Material: Manufactured from high-quality copper alloy (bronze/brass) for superior self-lubricating properties, excellent corrosion resistance, and outstanding load-bearing capacity under heavy radial loads.
• 3 Concentric Inner Face Grooves: Precision-machined concentric lubrication grooves on the top face facilitate oil distribution and retention, ensuring consistent lubrication across the bearing surface during operation.
• Center Circumferential Dividing Groove: Mid-height circumferential groove on the outer cylindrical surface aids in lubrication distribution and provides a positive location feature within the housing bore.
• Precision CNC Turned: All mating surfaces — inner bore, outer diameter, and end faces — are precision turned to tight tolerances for accurate fit and smooth rotation.
• Large Diameter Design: OD ~215mm × Height ~80mm, suitable for large pivot joints, blade circle assemblies, and heavy-duty rotating shaft applications.

Specifications

• Material: Copper Alloy (Bronze / Brass)
• Type: Ring Bushing / Circle Bushing / Plain Bearing
• Outer Diameter (OD): ~215mm
• Height: ~80mm
• Surface Features: 3 Concentric Face Grooves, 1 Center Circumferential Side Groove
• Finish: Precision CNC Turned, Bright Brass
• Application: Circle Assembly, Pivot Joint, Heavy Equipment Bearing

Applications

Commonly used in motor grader blade circle assemblies, excavator pivot joints, crane slewing rings, bulldozer push arms, and other heavy construction and mining equipment where a large-diameter, high-load plain bearing is required. Also suitable for agricultural machinery and general industrial rotating assemblies.

Quality Assurance

Each bushing undergoes strict dimensional inspection on inner diameter, outer diameter, height, and groove geometry to ensure compliance with engineering tolerances. Sourced from experienced foundries and machining facilities specializing in large-diameter copper alloy bearings for the construction machinery industry.

Please verify inner diameter, outer diameter, and height dimensions against your equipment specifications before ordering. Bulk pricing available — contact us for a quote.