| 摘要 |
There is described a bicycle crank (62) for stationary exercising bicycle including a crank bearing housing (72, 78), which is connected with a frame tube (74) of the frame of the exercising bicycle by welding, the bicycle crank comprising a through-going crankshaft (62) which at one end is adapted for directly non-rotating connection with a basic part of a crank (80), and which at the opposite end is connected with a drive belt pulley (66) and a basic part for another crank (82), where the crankshaft (68) is made in one piece with the drive belt pulley (66), and that the crankshaft within the end parts is designed with fit faces and contact for inner rings of ball bearings, and that the crankshaft housing has cylindrical borings in which outer rings of the ball bearings fit.
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