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Letter from British Timken Limited concerning steering gear bearing specifications.


Identifier  ExFiles\Box 153\1\  scan0125
Date  16th February 1938
  
BRITISH TIMKEN LIMITED
MANUFACTURERS OF
TAPERED ROLLER BEARINGS ALSO BALL AND PARALLEL ROLLER BEARINGS
TRADE MARK: TIMKEN

LONDON OFFICE:
10, MAYFAIR PLACE,
LONDON, W. 1.
TELEPHONE: GROSVENOR 2944
TELEGRAMS: 'BRITIMKEN - PICCY - LONDON'

REGISTERED OFFICES AND WORKS:
CHESTON ROAD, ASTON,
BIRMINGHAM, 7.
PLEASE ADDRESS ALL COMMUNICATIONS TO THE COMPANY

DIRECTORS
M. {Mr Moon / Mr Moore} B. U. DEWAR
W. DALLOW
A. {Mr Adams} J. {Mr Johnson W.M.} M. {Mr Moon / Mr Moore} DUNCAN
F. {Mr Friese} J. {Mr Johnson W.M.} PASCOE
TELEPHONE: EAST 1321 (6 LINES)
TELEGRAMS: 'BRITIMKEN - PHONE - BIRMINGHAM'

YOUR REFERENCE Auto.Division.
OUR REFERENCE EHD/NC.

Messrs. Rolls-Royce Limited,
Derby.

16th February, 1938.

Dear Sirs,

Timken Steering Gear Bearing No.
31.C - 32.C.

Referring to the recent visit to your Works of the undersigned and our Auto. Sales Manager, Mr. W. E. {Mr Elliott - Chief Engineer} Hobley, and their discussion with Mr. Hardy, we beg to confirm the points raised as follows:-

(1) We are quite in agreement with the diameter of the undercut on the bearing cone machined on the cam remaining at 1.570" instead of 1.5834" as shown on our drawing No. TS/S.21017.A.

The slight reduction in capacity of the bearing is, we understand, of no consequence in practice, as the capacity has been found to be ample for the application.

We are pleased to learn, in this respect, that the Timken bearings are giving satisfactory service.

(2) With respect to our query as to the sufficiency of cage clearance, having particular reference to the dimension of 1/2" between the end of the cone and the adjacent face of the cam, shown on your drawing No. FW.168, we understand that this applies to one model only, and that no trouble with cage clearance has been experienced in practice.

We also noted from the set of sample parts shown to us that actually a clearance of 1/32" was obtained, and that there appears very little possibility of the end of the cage fouling on the cam in practice.

Handwritten notes:
Top center: 1300
Top left: RNX/FJH {Fred J. Hardy - Chief Dev. Engineer}
Left margin: H'dy {F R Danby}
Left margin: Noted By {R.W. Bailey - Chief Engineer} /HSB
Right margin: FJH {Fred J. Hardy - Chief Dev. Engineer}
  
  
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).


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