Catalog: Roller Bearings
Company/Brand: RBC Bearings
roller bearing components in Roller Bearings by RBC Bearings
precision ground heavy duty needle roller bearings with seals bearing part number ... matches the numeric component of the bearing inner rings with suffix -c or -d differ ... 69,500 example suitable inner rings for bearing sj 8447 ss 2 1/2 x 3 1/4 x 1 3/4 ...

2.2 adjustments to bearing capacity 2.2.1 raceway hardness the ... are valid only if all load carrying bearing components are properly heat treated to ... ring the shaft becomes an integral bearing component if one or more bearing ... components possess a hardness of less than hrc 58 ... hrc 40 is not recommended the adjusted bearing capacities c and c o become adjusted ... 2.2.2 operating temperature rbc roller bearings without seals and metallic cages are ... more temperature resistant bearing materials can be substituted consult ... 3 thrust capacity of radial cylindrical roller bearings depending on internal design ... and operating conditions cylindrical roller bearings can support considerable ... makes them suitable for use as locating bearings the main design criterion is the length ...

2.4 adjustments to fatigue life if bearing design and operation deviate ... 0.53 0.44 0.33 0.21 the materials and bearing technology factor a2 1 for standard ... bearings adjustment factor a3takes into account ... loads misalignment and lubrication rbc rollers are crowned to reduce the danger of ... roller end loading and to allow for ... for a detailed analysis 3 equivalent bearing speed and load 3.1 mean effective ... bearing speed a mean effective bearing speed ne [rpm must be calculated for ... bearings subject to variable loads and speeds ... average of all individual speed components ne 100 ni t i 8 2 n1 t 100 1 n2 ... in of total time 3.2 equivalent bearing load the general equation to compute ... the equivalent bearing load pe is q q fi n i t i pe ne 100 ... q i f2 t 100 q 2 10 where q 10/3 for roller bearings fi individual radial load [ ...

if the bearing is subject to repeated shock or impact ... equivalent load pe or its individual components should be multiplied by a suitable ... shock load factor should not exceed the bearing static capacity to prevent brinelling ... of raceways and rollers loading uniform and constant variable ... in the dimensional tables apply to bearings lubricated with oil of proper viscosity ... to medium load poor cooling conditions bearing misalignment and improper diametral ... bearing clearance will cause the bearing to heat up and reduce the maximum ... permissible speed grease lubricated bearings should not exceed 65 of the values ... in the tables the maximum speed of bearings with contacting lip seals is generally ... the nominal housing bore is the maximum bearing outside diameter the nominal shaft ...

primary function is to protect the bearing from contamination the relubrication ... period a visual examination of the bearings may indicate the need for more grease ... recommended quanitity of grease in a roller bearing is a function of operating ... speed pumping a high speed bearing full of grease will cause overheating ... grease loss after melting and eventual bearing failure due to lack of lubricant table ... fill as a percent of free interior bearing space versus the operating speed n as a ... speed nl visual examination of the bearing for compliance is sufficient operating ... 6.2 oil lubrication the more demanding bearing applications involving high operating ... a hydrodynamic lubricating film between rollers and raceways will be too thin to ... metal to metal contact and the adjusted bearing life will be less than the theoretical ...