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Series Standard (metal)
Datum/Pitch length 3739mm
Trek BB90 bottom brackets require the bearing to be directly pressed into the BB shell that is often made from a material that is softer than steel
Inside length 1728mm
Series: 30312
4T-25877/25821 NTN Taper Roller Bearing 34.93x73.03x23.81mm Open Series Standard (metal)NTN taper roller bearings are precision engineered components designed to facilitate smooth rotational motion in various mechanical systems, particularly in applications where radial and axial loads need to be accommodated simultaneously. These bearings feature an inner ring (cone), an outer ring (cup), tapered rollers, and a cage assembly. NTN taper roller bearings offer several advantages: High Load Capacity: The tapered design and robust
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