The document discusses the pros and cons of different bearing options. It analyzes the current use of deep groove ball bearings, and considers alternatives of double row ball bearings or larger single row bearings. A table scores the options on various metrics like load capacity, fatigue resistance, and speed limits. Double row bearings have the highest load capacity but may not be suitable for high speeds. Larger single row bearings perform similarly to the current type across most metrics.
2. PROS AND CONS
Jake Lacey, Lachlan McHenry, Tom Kenny, James Malin
• UNIVERSAL JOINT HAS A TWO DEGREE PLAY
• STEERING MOTION CAUSES FRAME TO DEFLECT
• FASTENING PIN IS LOOSE
• AS MINIMALISTIC AS POSSIBLE. THIS MEANS IT IS
DESIGNED TO BE LIGHT
• STRONG AGAINST AXIAL LOAD
• COMPONENTS ARE BOLTED TO ENSURE TUNING AND
SERVICEABILITY
6. Jake Lacey, Lachlan McHenry, Tom Kenny, James Malin
Current bearings in use:
Deep Groove Ball Bearings (single row)
Very good for high speeds
Versatile, can sustain radial loads as well as axial loads in both directions
Not self-aligning, accurate alignment between shaft and housing bore is required.
Alternatives:
Deep Groove Ball Bearings (double row)
Considerably higher load carrying capacity
Not as suitable for high speeds as the current bearing
Much higher fatigue resistance than the current bearing
Larger Deep Groove Ball Bearings (single row)
Good for high speeds
Higher load capacity
Improved fatigue resistance
7. Jake Lacey, Lachlan McHenry, Tom Kenny, James Malin
Dynamic Load (kN) Static Load
(kN)
Fatigue
Load Limit,
Pu
Reference
Speed
Limiting
Speed
Total Score
Current Deep Groove
Ball Bearing (single
row) 2 1 1 5 5 14
Deep Groove Ball
Bearing (double row)
5 5 4 1 1 16
Larger Deep Groove
Ball Bearing (single
row) 3 3 2 4 4 16
Overall Rating (1= very poor, 5=very good)
8. Jake Lacey, Lachlan McHenry, Tom Kenny, James Malin
Deep Groove Ball Bearing
(single row)
Deep Groove Ball Bearing
(double row)
