Browse Publications Technical Papers 2011-01-2154
2011-09-13

Load Calculations for Slewing Bearings with Eccentric Radial Loads 2011-01-2154

Single row four point contact ball bearings are routinely used as slewing bearings to take heavy loads under a combination of eccentric axial load and radial load for applications such as excavators, cranes, etc. The calculation method of the equivalent loads for the slewing bearings was introduced in SAE 2010-01- 1892.1) However, in this previous paper the calculation method could not be applied when an axial load does not exist. The specific case with no axial load but with a moment due to an eccentric radial load is introduced in this paper. When the eccentric radial load is applied, the bearing takes ball loads on both sides of each raceway. As a result, simple equations were obtained to calculate the static and dynamic equivalent loads, as well as the safety factors and bearing lives for slewing bearings under this condition. This method is used for the case when a bearing is mounted on a horizontal axis and loaded by a moment due to an eccentric radial load, such as large wheel change equipment for off-road heavy duty machinery.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Load Calculations for Slewring Bearings

2010-01-1892

View Details

TECHNICAL PAPER

Safety Factor and Life Calculations for Cross Roller Slew Ring Bearings

2008-01-2634

View Details

TECHNICAL PAPER

Axial Equivalent Load for Slew Ring Bearings under an Eccentric Axial Load

2006-01-3554

View Details

X