2PCS Bicycle Bearings， Precision Mountain Bike Road Bike Bearing Set for Crankset, Bottom Bracket & Wheel Hubs - Durable Chrome Steel Construction

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상품 특징

• 2PCS Precision Bearing Set: 3/16 inch ball diameter x 2 The set includes 2 high-precision bearing components, with a single bearing ball diameter of strictly 5mm (3/16 inch), suitable for mainstream mountain bike/road bike crankshafts, axles, and wheel hub systems, without the need to purchase additional accessories.
• Industrial grade chromium steel material: wear-resistant and rust resistant Mainstream car models are universal The golden ratio of outer diameter 31mm (1.22 inches) x inner diameter 22mm (0.86 inches) is compatible with over 90% of mountain bike axle systems, covering most wheel diameters of mountain bikes and road bikes' front forks.
• Industrial grade chromium steel material: wear-resistant and rust resistant The bearings are made of high carbon chromium steel, with a surface strengthened by heat treatment, resulting in high hardness and strong impact resistance; The steel ball is precisely ground to ensure smooth rotation without any jamming. Compared to ordinary carbon steel bearings or plastic bearings, it emphasizes industrial grade durability and is suitable for outdoor wet/muddy riding environments.
• Tool free quick installation: beginner friendly design The inner and outer rings of the bearing adopt a standard taper design, and are equipped with an accompanying installation sleeve (or universal hex wrench). The old bearing can be disassembled and the new bearing can be installed within 5 minutes without the need for professional tools or debugging.
• This stainless steel ball bearing is firmly installed in the retaining ring and is a bicycle component specifically designed for replacing crank bearings. Support repeated replacement (normal usage cycle of 2-3 years) to reduce the long-term maintenance cost of mountain bikes.

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