TAPERED ROLLER BEARING SETTING

Proper Tapered Roller Bearing Installation

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
Requirements	Manual	Preset assembly	Set-Right	Acro-Set	Projecta-Set	Torque-Set	Clamp-Set
Mounted bearing setting range, in. (Typical Min to Max)	0.004 - 0.010	0.006 - 0.012	0.008 - 0.014	0.004 -	0.002 - 0.004	0.005 - 0.007	0.003- 0.005
Mounted bearing setting range, in. (Typical Min to Max)	0.004 - 0.010	0.006 - 0.012	(probable)	0.006	0.002 - 0.004	0.005 - 0.007	0.003- 0.005
		End play or preload	End play or preload	End play or preload	End play or preload	End play or preload
Mounted setting region	End play	End play or preload	End play or preload	End play or preload	End play or preload	End play or preload	End play
Loose fitted member for adjustment?
Loose fitted member for adjustment?	No	No	No	Yes	No	No	Yes
					Yes Gauge spring
Apply set-up load?	Yes	No	No	Yes (constant)	Yes Gauge spring	Yes	Yes (constant)
Special gauges,					Yes Special gauge	Yes Rolling torque	Yes Compensating ring
fixtures; components?	No	No	No	No	& LVDT*	gauge	Yes Compensating ring
Special bearing codes or assemblies?		Yes “Matched” assembly	Yes Codes & spacers
Special bearing codes or assemblies?	No	Yes “Matched” assembly	Yes Codes & spacers	No	No	No	No
Pretesting needed to develop method?
Pretesting needed to develop method?	No	No	Yes (limited)	Yes	Yes	Yes	Yes
	Low to Moderate		Moderate to High		Moderate to High
Typical production volume	Low to Moderate	Low to High	Moderate to High	Low to High	Moderate to High	Low to High	Low to High
Assembler skill or training level				Low-Med Chart reading	Low LVDT reading	Low-Med Chart/ gauge reading
Assembler skill or training level	High	Low	Low	Low-Med Chart reading	Low LVDT reading	Low-Med Chart/ gauge reading	Low
							Yes constant size
Shim pack applied?	Yes	No	No	Yes	Yes	Yes	Yes constant size
					No (LVDT)	No (brg torque)
Shim gap measurement	Yes	No	No	Yes	No (LVDT)	No (brg torque)	No
Possible use of wider bearing system mounting tolerances?		No Control fit tolerances	No Need tighter tolerances
Possible use of wider bearing system mounting tolerances?	Yes	No Control fit tolerances	No Need tighter tolerances	Yes	Yes	Yes	Yes
Bearing rotation or oscillation?
Bearing rotation or oscillation?	Yes	No	No	Yes	Yes	Yes	Yes
				Yes (with service manual)		Yes (with manual and new brgs)
Applicable for field service?	Yes	Yes	Yes	Yes (with service manual)	No	Yes (with manual and new brgs)	Yes
Readily applicable to large, heavy units?
Readily applicable to large, heavy units?	No	Yes	Yes	Yes	No	No	No

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