SPIRAL BEVEL AND HYPOID TOOTH BEARING CONTACT CHART

SPIRAL BEVEL AND HYPOID TOOTH BEARING CONTACT CHART

CONDITION 1

TYPICAL PREFERRED BEARING ON BOTH SIDES OF TOOTH

WHILE UNDER A LIGHT LOAD

CONDITION 2

TOE BEARING ON BOTH SIDES OF TOOTH-GEAR SET

NOISY. TO MOVE BEARING TOWARD HEEL INCREASE

BACKLASH WITHIN LIMITS BY MOVING GEAR AWAY FROM

PINION.

CONDITION 3

HEEL BEARING ON BOTH SIDES OF TOOTH- GEAR SET

NOISY AND COULD RESULT IN EARLY GEAR FAILURE. TO

MOVE BEARING TOWARD TOE DECREASE BACKLASH

WITHIN LIMITS BY MOVING GEAR TOWARD PINION.

CONDITION 4

LOW BEARING ON GEAR AND HIGH BEARING ON PINION.

CORRECT BY PULLING PINION AWAY FROM GEAR.

INCREASE MOUNTING DISTANCE BY ADDING SHIMS

BETWEEN BEARING CAGE AND DIFFERENTIAL HOUSING.

CONDITION 5

HIGH BEARING ON GEAR AND LOW BEARING ON PINION.

CORRECT BY MOVING PINION IN TOWARD GEAR.

DECREASE MOUNTING DISTANCE BY REMOVING SHIMS

FROM BETWEEN BEARING CAGE AND DIFFERENTIAL

HOUSING.

BACKLASH

BACKLASH SHOULD BE MEASURED WITH A DIAL

INDICATOR RIGIDLY MOUNTED WITH THE STEM

PERPENDICULAR TO THE TOOTH SURFACE AT THE

EXTREME HEEL.