Half round key specifications

1. Basic shaft diameter
The relationship between the basic size of the semicircle key and the shaft diameter is shown in Figure 4. When selecting the size of the semicircle key, please refer to the table based on the shaft diameter to select the semicircle key.
2. Limit deviation
The size relationship and limit deviation between the semicircle key and keyway are shown in Figure 5. Please refer to the table for actual situation selection.
3. Keyway fit
Half round keys and keyways are in width.