Rolls-Royce Archives
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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Test report detailing the performance and eventual seizure of a bearing under varying RPMs and loads.

Identifier  ExFiles\Box 173\1\  img408
Date  1st February 1934 guessed
  
BEARING TEST
R.R. BEARING.

Rolls Royce BEARING TEST
Rolls Royce BEARINGS

R.P.M. Time Oil Inlet Oil Outlet Brg. Temp. Oil Pres. lb.sq.in. Torque Load
1000 11.15 70 C 40 C 31 C 140 18
2000 11.24 80 60 67 108 19
" " 80 80 112 90 18
2500 11.29 80 80 96 90 18
" " 85 82 104 80 18
" " 87 82 96 73 18
3000 11.34 90 40 lbs.

After 2 min. oil pressure fell to 40 lbs. and brg. temp. rose rapidly- clutch was thrown out on engine drive. Bearing failure probably avoided.
Repeat run [run is struck through]
REPEAT

3000 11.38 90 85 120 80 18-20 lbs
" " 90 90 138 60
" " 90 90 146 60
" " 90 90 127 60
3250 11.43 90 90 132 50 23-25
" " 90 90 166 45
" " 95 95 160 50
" 11.46 95 95 200 38 85 lbs.

Bearing seized

Remarks:
Rolls Royce Bearings Marked A Crankshaft #3
  
  


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