Hi-Lo™ to Speed Selector Cross Reference for Direct Pulley Replacement: 30TBR, 40TBR, 40TBR-W, 50TBR, 57-20TBR, 57TBR, 66TBR, 86TBR

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Key

Pulley Type

Spring 2Has 2 spring loaded movable faces.
Spring 1 OHas 1 spring loaded movable face at outer end, away from mounting shaft.
Spring 1 IHas 1 spring loaded movable face at inner end, near mounting shaft.
Spring 1 O/IHas 1 spring loaded movable face that can be located at either end.
ControlHas one movable face at outer end, controlled by integrated handwheel.
Control Sep.Has one movable face at outer end, controlled by separate handwheel.
Control 2Has two movable faces, controlled by integrated handwheel.
CompoundHas two variable pitch grooves and mounts to a separate controller

Bore Type

EndMounted from 1 end of the pulley.
ColletMounted from 1 end of the pulley by means of a collet.
End 2Can be mounted from either end of the pulley.
ThruCan be mounted with shaft going entire way through the pulley.
ControllerMounted to a separate controller.