motorcycle wheel hub

wheel hub for CG125 Weight : 1kG-2.2KG. Technical Parameters The front and rear wheel axles shall use 42CrMo4 material, HRC22-83.The wheel hub material is ADC12. Weight and requirements of materials of each part of wheel hub:Rear wheel hub Tensile strength≥230MPa, elongation≤2% Front wheel hub Tensile strength≥230MPa, elongation≤2% Shoe block Wall thickness≥3mm, reinforcing rib thickness≥4mm Chain wheel Number of teeth:38, thickness:7.2mm, concentricity≤1.0, hardness:HRC28-32 Front/rear axle 1. 16CrMo4 material; 2. Front axle: Φ12.2×186, rear axle: Φ15×230; 3. Front axle housing: Φ12.2×Φ21×24, rear axle housing (rightΦ15.2×Φ25×34.5. LeftΦ15.2×Φ28×18.5). Note: the axle housing is chromium-plated part. Dust cap Chromium-plated Chain adjuster, jump ring The distance between the hole center to the end part of the chain adjuster is 75mm Rear side cover Tensile strength≥230MPa, elongation≤2% Front side cover w Tensile strength≥230MPa, elongation≤2%, the fit clearance between the antislip groove and shock absorber is 0.3mm 0.5mm. The hole diameter to install the front brake cable is Φ9.5mm. Front/rear rocker arm Chromium-plated, the lever pin hole: Φ12.3. The distance between the center of lever pin hole and center of rocker arm: front wheel 90±5mm, rear wheel 113±5mm. Camshaft Thickness of working surface: 6mm. the surface is chromium-plated.