Roller Bearings Flashcards
Cylindrical speed limitations
Length to diameter Grade of precision Roller guidance Type of cage Type of lube Shaft installation Housing accuracy Heat dissipation
Information about cylindrical bearings
Highest combined radial & speed (PV)
Tolerates some thrust load
-heat generated/ heat dissipated
3 things about Roller bearings
More rolling surface
Line contact
Heavier radial loads
2 types of needle bearings
Cage separated
Full compliment
Cage separated needle bearing details
Rollers separated by a cage
High speeds, precision rolling
Full compliment details
Rollers are supported by each other Drawn cup (grease retained)
Needle bearings ratio and strong point
Diameter to length ratio (6:1)
Heavy radial loads in minimal space
What is the most compact and economical type of bearing? And why
Needle bearing
Uses shaft as inner race
What consists of an inner and outer race with a plain or rolling element between the races?
Cam-type and load following bearings
What’s special about spherical bearings?
Support high radial and thrust or combined loads.
Self aligning spherical bearing alignment range
.5-2* range without affecting life span
Spherical bearings usually contain?
One or two rows rollers
Spherical outer raceway
Spherical roller bearings
Spherical radial bearing load ratio
4lb of radial to 1lb of thrust
How is thrust applied to tapered bearings?
From large side
What are tapered bearing good for?
Carry heavy radial and thrust loads
