FETB 23 & ETB23
The FETB 23 (Flanged) and ETB 23 single-taper design is "self centering" and
a good choice for applications requiring low-cost expanding bushings: Shaft
couplings, timing beslt pulleys, sprockets, fan impellers, etc.
Although identical in torque capacity and function, the FETB 23 flange provides a positive stop to help position a sprocket or gear.