Bearing Installation and Maintenance Guide Includes Shaft and Housing Fits

Each type of bearing has characteristic properties which make it particularly uitable for certain applications. The main factors to be considered when selecting he correct type are:
● precision required
● noise factor
● internal clearance
● materials and cage design
● bearing arrangement
● seals
● available space
● magnitude and direction of load
(radial, axial, or combined)
● speed
● misalignment
● mounting and dismounting procedures

Bearing Types....................................................... 2-6
Bearing Terminology ............................................ 7
Mounting and Dismounting of Bearings
Fitting Practice ............................................................... 8
Internal Bearing Clearance ............................................ 8
Mounting Methods...........................................................8
Cold Mounting.......................................................... 8
Temperature Mounting............................................. 8
Heating the Bearing............................................. 8
Heating the Housing............................................ 9
Oil Injection (Hydraulic) Mounting............................ 9
Mounting on the Shaft .................................................... 9
Cylindrical Bore Bearings ........................................ 9
Tapered Bore Bearings.......................................... 10
Tapered Shaft Mounting......................................... 11
Adapter Mounting ............................................. 11-12
Mounting in the Housing .............................................. 13
Bearings Requiring Axial Adjustment........................... 13
SKF Hydraulic Drive-up Method................................... 16
Mounting CARB™ Toroidal Roller Bearings................. 21
Cylindrical Bore ..................................................... 22
Tapered Bore ......................................................... 22
Dismounting ................................................................. 22
Guidelines for Bearing Assembly ................................. 28
Maintenance and Inspection ................................... 28-30
Can the Bearing Be Used Again? ................................ 31
Shaft and Housing Fits
Suitable Fits ................................................................. 32
Dimensional Form and Running Accuracy................... 33
Surface Roughness of Bearing Seatings ..................... 33
Tables (see p. 123-125 for list) ................................ 34-63
Lubrication
Functions of Lubrication ............................................... 64
Oil Lubrication .............................................................. 64
Selection of Oil....................................................... 66
Relubrication Intervals ........................................... 66
Oil Supply Systems................................................ 66
Oil Bath.............................................................. 66
Circulating Systems..................................... 66, 69
Wick Feed.......................................................... 69
Oil Mist from Separate Mist Generator.............. 70
Air-Oil Lubrication.............................................. 70
Grease Lubrication....................................................... 72
Grease Classification............................................. 72
Testing ................................................................... 73
Operating Conditions ............................................. 74
Lubrication and Maintenance ................................ 75
Relubrication ..................................................... 75
Relubrication Intervals....................................... 75
Replenishment....................................................... 75
Grease Supply Systems ........................................ 75
Housings without Grease Fittings...................... 75
Housings with Grease Fittings..................... 75, 77
Grease Chamber Lubrication ............................ 77
Grease Quantity Regulator................................ 77
Comparative Advantages of Oil and Grease................ 78
High Temperature Applications .................................... 78
Minimum Friction Applications...................................... 78
Protection against Moisture.......................................... 78
Protection of Idle Machinery ........................................ 79
Cleaning.................................................................. 79-80
CARB™ Toroidal Roller Bearing Lubrication .......... 80-82
SKF Solid Oil™ ............................................................ 83
Troubleshooting ............................................ 84-103
Trouble Conditions and Their Solutions
Overheated Bearing ......................................... 86-88
Noisy Bearing ................................................... 88-92
Too Frequent Replacements............................. 92-95
Vibration ........................................................... 96-97
Unsatisfactory Performance of Equipment ..... 98-100
Bearing Loose on Shaft ....................................... 101
Shaft Hard to Turn ........................................ 101-103
Bearing Failures and Their Causes
Spalling ...................................................................... 104
Patterns of Load Zones and
Their Meaning in Bearing Damage ..................... 105-107
Failure Due to Defective Shaft/Housing Seats ........... 107
Misalignment....................................................... 107-109
Faulty Mounting Practice..................................... 109-110
Damage due to Improper Fit ............................... 110-111
Inadequate or Unsuitable Lubricants .................. 111-113
Ineffective Sealing............................................... 113-114
Vibration.............................................................. 114-115
Passage of Electric Current through
the Bearing.......................................................... 115-116
Bearing Maintenance Products.................... 117
Bearing Mounting and
Dismounting Methods...................................... 118
Reliability Maintenance Institute .......... 119-120
Maintenance Road Show..................................... 121
Videos.................................................................. 121
SKF Authorized Distributor Training..................... 122
Index of Tables and Figures ................... 123-125
Information Order Form................................... 127
Table of Contents