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.

- NSK 43kwd07 Bearing
- No
- Triple seals

- NTN 51309 thrust ball bearings
- 3.2500 in
- Three-Bolt Bracket S

- NTN RNAO-35×45×26ZW needle roller bearings
- 1045 Carbon Steel
- Yes (with retaining

- NTN T-EE231401D/231975+A tapered roller bearings
- Class 3
- 9.0000 in

- NTN NKX70 complex bearings
- 1.1563 in
- 24500 lbf

- 380,000 mm x 760,000 mm x 128,000 mm NTN SC7606 deep groove ball bearings
- Cone & Cup
- 19.2500 in

- 50 mm x 90 mm x 20 mm NTN 7210DF angular contact ball bearings
- Clear Anodize
- Stainless Steel

- NTN KJ40X45X24.8 needle roller bearings
- Cone Roller Bearing
- 6

- NTN PK15×20×9.8X needle roller bearings
- 1 mm
- 16 mm

- NTN AXN4075 complex bearings
- 1780 lbf
- 2.7500 in

- 28 mm x 58 mm x 16 mm NTN 62/28LLU deep groove ball bearings
- 28 mm x 58 mm x 16 mm