CaseStudy

TAPERED ROLLER BEARING SETTING

Tapered roller bearings can be set at initial machine assembly to any desired axial or radial clearance.Tapered roller bearings do not require tight control of shaft or housing fits to obtain setting. Tapered roller bearings are mounted in pairs, Tapered roller bearings setting is primarily dependent upon the axial location of one bearing row relative to the opposite row.

Manual methods:

Manual methods are frequently used to set tapered roller bearing on a variety of equipment with low to moderate volume production requirements whereby a non- exact, primarily end play, setting range variation is acceptable. No special tooling, gauges, charts or fixtures are typically required, but assembler’s skill and judgment are necessary.

Automated setting:

Large equipment or high production tapered roller bearing applications, manual setting may be too troublesome, of inappropriate accuracy and reliability, or too time consuming. The Loyal Company has devised preset bearing assemblies and automated setting techniques as alternatives to manual setting.

To determine a suggested ambient bearing setting for a specific application, contact a Loyal sales engineer or representative.


TAPERED ROLLER BEARING SETTING METHODS

 SETTING METHOD
RequirementsManualPreset assemblySet-RightAcro-SetProjecta-SetTorque-SetClamp-Set
Mounted bearing   setting range, in. (Typical Min to Max)0.004 - 0.0100.006 - 0.0120.008 - 0.0140.004 -0.002 - 0.0040.005 - 0.0070.003- 0.005
(probable)0.006
  End play or preloadEnd play or preloadEnd play or preloadEnd play or preloadEnd play or preload 
Mounted setting regionEnd playEnd play
Loose fitted   member for adjustment?       
NoNoNoYesNoNoYes
     Yes Gauge spring  
Apply set-up load?YesNoNoYes (constant)YesYes (constant)
Special gauges,    Yes Special   gaugeYes Rolling   torqueYes   Compensating ring
fixtures; components?NoNoNoNo& LVDT*gauge
Special bearing   codes or assemblies? Yes “Matched” assemblyYes Codes & spacers    
NoNoNoNoNo
Pretesting needed   to develop method?       
NoNoYes (limited)YesYesYesYes
 Low to Moderate Moderate to High Moderate to High  
Typical production volumeLow to HighLow to HighLow to HighLow to High
Assembler skill   or training level   Low-Med Chart readingLow LVDT readingLow-Med Chart/ gauge reading 
HighLowLowLow
       Yes constant size
Shim pack applied?YesNoNoYesYesYes
     No (LVDT)No (brg torque) 
Shim gap measurementYesNoNoYesNo
Possible use of   wider bearing system mounting tolerances? No  Control fit tolerancesNo Need tighter tolerances    
YesYesYesYesYes
Bearing rotation   or oscillation?       
YesNoNoYesYesYesYes
    Yes (with service manual) Yes (with manual and new brgs) 
Applicable for field service?YesYesYesNoYes
Readily   applicable to large, heavy units?       
NoYesYesYesNoNoNo


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