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#1
29-09-11, 22:04
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Bearings
The bearing was an ND 3305 (New Departure) which now is a 6305. I would reccomend a 6305 2rs (with 2 rubber seals) The bearing is from the 6000 series which identifies it as a standard metric bearing (common of the shelf)
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... 
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#2
30-09-11, 03:03
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Lynn is right on the money. I machined my new rollers from 4140 and had them hardness tested against the original ones and they came up the same(can't quite remember the figure, it was some 20 years ago, I think around 54-56 Rc). They have not given a bit of trouble since. Again, best to go with 2RS bearings, sealed from the factory. With the very little rotation and no speed, they too will last a life time.
Perry
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