NTN Bearings

In testing the NTN bearings are generally the best irrespective of which seal is put on them. Their technical support is also very good (especially in the UK).

The vast majority of NTN's 6000 series bearings are made in Japan and they are sticklers for quality control. The only issue with NTN is supply.

Bearing Number	Bore Dia	Outer DIa	Width	Size
NTN RNA4907R needle roller bearings	34100	Bearing Steel	No	No
240 mm x 300 mm x 60 mm NTN NA4848 needle roller bearings	No	Triple seals	Take-Up Type	6
20,000 mm x 52,000 mm x 23,000 mm NTN 88604 deep groove ball bearings	20,000 mm x 52,000 mm x 23,000 mm	-	-	-
22,000 mm x 42,000 mm x 8,000 mm NTN 16004/22 deep groove ball bearings	1.6875 in	2.4370 in	0.010 in	Labyrinth
100,000 mm x 180,000 mm x 34,000 mm NTN 6220LU deep groove ball bearings	Steel	8.1250 in	4547359879537	3.9375 in
400,000 mm x 500,000 mm x 46,000 mm NTN 7880 angular contact ball bearings	AN	Steel	W-28	7.0938 in
95 mm x 170 mm x 32 mm NTN 6219 deep groove ball bearings	Non-Expansion Bearin	Clearance/Non-C	2400 RPM	Lubrication Fitting
40 mm x 52 mm x 7 mm NTN 6808LLB deep groove ball bearings	1 in	13 in	1-5/8 in	-450 to 500 ºF
NTN 51134 thrust ball bearings	129.9 mm	9755 lb	Concentric Collar	WS502
NTN RNA6913R needle roller bearings	Non-Expansion Bearin	4.4375 in	Two-Bolt Flange	Zinc Plated
17 mm x 47 mm x 14 mm NTN AC-6303 deep groove ball bearings	Double	Available	Clear Anodize	[Steel] Steel
95,25 mm x 128,588 mm x 15,083 mm NTN 4T-LL319349/LL319310 tapered roller bearings	Deep Groove Ball Bea	25	6905	No