Anti-Friction Bearings Flashcards
The surface on which the rolling elements roll?
The raceway (page 2)
The 3 functions of the cage?
1) Prevent rolling elements from rubbing. 2)Push rolling elements through unloaded zone.
3)Guide (Separate) elements with minimum friction. (page 2)
Rolling elements should NOT:
Slide, skid, drag (page 2)
The first number on the bearing code indicates?
Type of bearing (Page 3)
Round, cylindrical, needle, tapered or spherical describe what?
Rolling elements (Page 3)
Area of Contact, Direction of Load, and Loaded Zone are all factors that affect the bearings ability to?
Carry a load (page 4)
Larger area of contact results in:
Larger load capacity (page 5)
Larger area of contact results in:
Larger load capacity (page 5)
What are the 3 types of load a bearing can handle?
Axial, Radial, Combination (page 5)
Loads act on a radial bearing in which direction?
Perpendicular (90 degrees to shaft) (Page 5)
A load parallel with the shaft is called?
Axial or Thrust
What load acts on a bearing that is greater than 0° but less than 90°
Combination
What determines the loaded zone?
The correct fit
The loaded zone depends on:
Internal Clearance or Preload (page 7)
As clearance decreases:
The loaded zone increases (page7)
Why does a larger loaded zone increase the capacity of the bearing?
Larger number of balls supporting load (page 7)
Type of rolling element, direction of load, and internal clearance/preload determine what?
Speed and load capacity rating (Page 8)
Ball Thrust Bearing tells you what about the rolling element/bearing
The shape and the direction of loading (Page 8)
Most common type of ball bearing?
Deep groove ball bearing
6208 Indicates which TYPE of bearing?
Single Row Deep Groove Ball Bearing
in a Four-Digit ISO bearing designation, what would the second number indicate? (X2XX)
The dimension series.
A bearing designation with the last two digits of 08 can have a bore diameter of what? (XX08)
8mm and 40mm
When pressing a bearing on a shaft, what is the best practice?
Inner, both preferably
When pressing a bearing into an interference fit housing which race should you press on?
Outer, both preferably
Maximum capacity ball bearings have less axial load capacity than standard deep groove ball bearings (True or False)
True (page 10)
Double Row Deep Groove Ball Bearings offer higher radial load capacity without increasing radial dimensions (T/F)
True (page 10)
Double Row Deep Groove Ball Bearing has a designation of?
4
Double Row Self-Aligning ball bearing is externally self-aligning (T/F)
False. Internally
In an internally self-aligning ball bearing, which ring is contoured to facilitate alignment?
Outer
In an externally self-aligning ball bearing which ring is contoured to facilitate alignment?
Outer
