The toothed half bush is still popular today because it
takes a lot of force to make it move on the axle. This makes it
useful in high-load applications: Two toothed half bushes are
preferable to one regular bush because they are less likely to
slip along the axle when a load is applied (see Figure 4-11).
Figure 4-11: Several examples of securing an axle in place using toothed
half bushes