NTN 6806 LLB 30x42x7 Ultra Low Friction Seal BB30
£27.00 (£32.40 UK Customers)
NTN 6806 LLB 30x42x7 Ultra Low Friction Seal Genuine Bearing,
4 in stock
This is a Genuine Bearing and not counterfeit or B grade Stock. Read more about this here
- CN normal clearance
- Teflon impregnated grease
- Premium Tier 1 supplier
- Most sizes are made in Japan, smaller sizes are made in Taiwan
NTN Corporation (Niwa, Tomoe, Nishizono) are one of the largest exporters of bearings and friction reducing products in Japan, their bearings are found in many items such as Cars, Motorbikes and Jet engines. NTN are an OEM supplier to Shimano, Mavic, Time and Look in the bicycle industry. NTN supply Rolls-Royce, General Electric, Pratt and Witney with bearings for Jet Engines.
NTN bearings have highly engineered seals that have been incrementally improved over time. Their fully sealed and ultra low friction seals have the lowest friction values in their respective categories. These bearings are the preferred brand for Hambini Bottom Brackets.
These bearings are genuine NTN bearings supplied directly from NTN’s European Warehouse in France. They are not counterfeit or B grade stock.
Hambini is the largest supplier of NTN bicycle bearings in Europe
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 (d)|
|Outside Diameter (D)|
Q & A
They are sold as singles as stated in the description.
These bearings come with integrated seals, I think the seals you are referring to actually double up as spacers. You are supposed to reuse the wave washer and the outer seals (spacers). The side to side play is adjusted by way of shimming. Getting the preload correct can be problematic with wave washer systems.
The wave washer is there to take out the movement/play tot the sides of the crank. You must reuse the wave washer.
The 2 outer bearing seals are extra seals to prevent debris from reaching the bearings and their seals. They also diminisch or prevent water ingress into the bearings from rain or washing (especiallypressure washing your bike. The 2 outer seals do not prevent water ingres but diminish it..