Dia. 200/180 x 100mm Fully Aluminum Wheel Pulley Belt Grinder Contact Wheel Drive Tracking Idler Wheel

Technical Specifications

• Outer Diameter (OD): 200 mm (~8") / 180 mm (~7")
• Rim / Face Width: 100 mm (~4")
• Core Material: High-density sand-cast aluminum blank, precision dynamic-balanced and CNC machined
• Maximum Operating Speed: Up to 2800 RPM
• Available Bore & Mounting Configurations:
  • Drive Wheel (Keyway): 200x100 mm (24 mm or 28 mm bore with 8x3 mm keyway); 180x100 mm (24 mm bore with 8x3 mm keyway)
  • Tracking / Idler / Contact Wheel (Installed Bearings): 200x100 mm with 6201 bearings (12 mm inner bore) or 6202 bearings (12.7 mm / 1/2" inner bore)
  • Through Hole: 180x100 mm (25 mm smooth through-hole); custom inner hole machining available upon request
• Machine Compatibility: 100 mm (4") wide belt grinders, 2x72 / 4x36 / 4x79 DIY sanders, heavy-duty metal grinding machines
• Applicable Belts & Abrasive Types: Ceramic alumina, zirconia alumina, aluminum oxide, and non-woven surface conditioning belts
• Sanding Application: Contact Grinding, Profile Shaping, Heavy Stock Removal, Metal Deburring, and Weld Blending
• Suitable Workpiece Materials: High Alloy Steel, Stainless Steel, Carbon Steel, Cast Iron, Aluminum Alloys, Brass, Non-Ferrous Metals, and Hardwood

Key Features & Engineering Highlights

• Solid Sand-Cast Aluminum Construction: Cast from high-grade aluminum blanks to eliminate internal voids, offering superior heat dissipation, corrosion resistance, and extended service life under heavy grinding pressure.
• Smooth Vibration-Free Running: Precision concentric CNC machining ensures true rotation at operating speeds up to 2800 RPM, preventing chatter marks and workpiece hollows during flat platen or slack belt operations.
• Dual Operating Versatility: Can be configured as a primary motor drive wheel (with standard keyway shaft connection) or as a smooth-tracking idler / contact wheel (with pre-installed double sealed bearings).
• 100 mm Wide Contact Face: Generous 100 mm (4") contact width provides stable support for wide abrasive belts, facilitating uniform stock removal and flat leveling across large metal plates and welded assemblies.

Applications & Workshop Integration

Ideal for custom belt sander builds, commercial knife-making grinders, and industrial deburring machines. Suitable for driving or guiding abrasive sanding belts during heavy weld grinding, blade profiling, foundry casting fettling, and pipe polishing.