NSK 6901 DD 12x24x6 61901 Fully Contacting Seal
- CN normal clearance
- P6/P6 tolerances on inner and outer rings
- Excellent grease retention requires little maintenance
- Premium Tier 1 supplier
NSK are an OEM supplier to Shimano and SRAM. Their bearing technology and specifically material technology is high regarded and amongst the best in the world. NSK is the largest bearing manufacturer in Japan and second largest in North America.
These bearings are genuine NSK bearings sourced from NSK in Newark England. They are not counterfeit or B grade stock.
Q. What is the best bearing brand?
NTN, NSK, FAG and SKF are all quality bearing suppliers and their products meet ISO/JIS/DIN standards. When selecting a bearing it is important to ensure that the bearing fits correctly within the enclosure. Far eastern bearings sold on ebay or amazon are often out of specification in one or multiple parameters, these fit issues manifest themselves as creak or poor bearing life. Some sellers have been known to sell fake bearings which are very difficult to spot without specialized measuring equipment, fitting these usually presents the same problems. In short, fitting genuine branded bearings is recommended
Q. Which seals do you recommend?
For road racing, NTN LLB series, SKF RZ series and NSK VV series are recommended. For inclement weather or extended life, NTN LLU series, SKF 2RS series, NSK DD series or FAG 2RS series are recommended
Q. Which bearings have the lowest friction?
NTN LLB series followed by NSK VV series, SKF RZ series and then FAG BRS series
Q. How many bearings is this listing for?
All bearings on this website are sold in Singles unless otherwise stated
|Inside Diameter (mm)||12|
|Outer Diameter (mm)||24|
|Alternative Part Numbers||6901 2RS 6901 LLU 6901 LLB 6901 2RZ 6901 VV 6901 DD 6901 2RSR 6901 HRS 61901 2RS 61901 LLU 61901 LLB 61901 2RZ 61901 VV 61901 DD 61901 2RSR 61901 HRS|