NT6779 BEARING.  Main Drive Thrust Bearing to the Borg & Beck 11″ x 11″ and 12″ x 11″ dual clutch.  

Imperial size 3″ diameter, open deep groove ball bearing.  The bearing is fitted into it’s own housing and is packed with grease during assembly.

See No.15 in the I.P.T.O Clutch Operating Linkage illustration.

Marshall tractor clutches used this imperial open bearing up until serial number 346A, after that a metric sealed bearing was used.

Leyland heavyweight tractor clutches used this imperial open bearing up until serial number 232619,  after that a metric sealed bearing was used (CTJ6255 BRG).

Fitted to:

• Nuffield 3DL (Universal Three), Nuffield 4DM (Universal Four)
• Nuffield 342, 460, 10/42, 10/60, 3/45, 4/65
• Leyland 253, 245, 344, 384, 255, 270, 262, 272, 462, 472, 282, 482, 502, 602, 604, 702, 704, 802, 804
• Leyland 285, 2100, 485, 4100
• Marshall 502, 602, 604, 702, 704, 802, 804