1 piece Dia.50mm/75mm/100mm*50mm Width Small Rubber Coated Aluminum Wheel Belt Grinder Idler Active Contact Wheel

Technical Specifications

• Available Outer Diameters (OD):
  • 50 mm (2"): Ultra-compact wheel for tight radiuses, choils, finger grooves, and internal contour grinding. (Smooth P-Type)
  • 75 mm (3"): Compact contact wheel for handle curves, small hollow grinds, and tight transitions. (Available in Smooth P-Type & Serrated K-Type)
  • 100 mm (4"): Versatile medium-small wheel for aggressive contour shaping and deburring. (Available in Smooth P-Type & Serrated K-Type)
• Rim / Face Width: 50 mm (2") standard width
• Core Material: High-precision CNC-machined solid aluminum bar stock core (maximum concentricity and balance)
• Rubber Surface Options:
  • P-Type (Smooth / Plane Solid Face): Groove-free continuous face for high grinding precision, smooth tracking, and uniform contact.
  • K-Type (Serrated / Grooved Face): Helical / radial serrated grooves for rapid heat dissipation, chip clearance, and increased cutting bite.
• Rubber Durometer / Hardness: 70A Shore standard (customizable from 35A to 95A upon request)
• Available Bore & Bearing Options:
  • Smooth Through Hole: 25 mm bore (direct shaft installation or custom lathe boring)
  • Installed Precision Bearings: 6001 (12 mm bore), 6201 (12 mm bore), 6202 (12.7 mm / 1/2" bore), 6202 (15 mm bore), 6202 (15.875 mm / 5/8" bore)
• Machine Compatibility: 2x72 belt grinders, knife making small wheel attachments, backstand grinders, industrial sanders
• Applicable Belts & Abrasives: 2" wide ceramic, zirconia alumina, aluminum oxide, silicon carbide, and surface conditioning belts
• Sanding Application: Small Radius Contour Profiling, Finger Groove Grinding, Tight Hollow Grinds, Handle Shaping, Inside Curve Deburring & Finishing
• Suitable Workpiece Materials: High Carbon Tool Steel, Stainless Steel, Titanium, Carbon Steel, Cast Iron, Aluminum Alloys, Brass, and Hardwood

Key Features & Engineering Highlights

• Solid Billet Aluminum Bar Core: Machined directly from solid aircraft-grade aluminum bar stock, delivering superior structural rigidity, zero porosity, and vibration-free high-speed performance.
• High-Elasticity Vulcanized Rubber Tire: Premium wear-resistant vulcanized rubber coating ensures firm yet resilient belt backing, preventing premature belt wear while maintaining exact work radius.
• Precision Small-Wheel Attachment Integration: Ideal for mounting in knife grinder small wheel fork attachments or tooling arms to reach recessed areas that large wheels cannot access.
• Wide Bearing Compatibility: Available with sealed ball bearings to fit standard 1/2" (12.7mm), 5/8" (15.875mm), 12mm, 15mm grinder spindles, or 25mm smooth bore for direct shaft mounting.

Applications & Workshop Guidelines

Indispensable tooling for knife makers, luthiers, sculptors, and precision fabricators. The 50mm (2"), 75mm (3"), and 100mm (4") diameters provide the exact curves needed for shaping knife tangs, handle scales, guard notches, trigger wells, and curved hardware.