NTN 6803 LLU 17x26x5 Fully Contacting Seal
£15.50 Ex. VAT
NTN 6803 LLU 17x26x5 Fully Contacting Seal Genuine Bearing,
4 in stock
This is a Genuine NTN deep groove ball bearing
- 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 oldest bearing manufacturers in the world, with their roots dating back to central Japan in the early 20th century. They have been manufacturing for over 100 years.
Measuring vibration is an effective method of ascertaining how well a bearing is manufactured. High-frequency vibration levels, often called spike energy, detect minute microscopic flaws in rolling element bearings. The results below show a typical wheel bearing after 4000km of use. Lower values indicate a superior life and reduced losses from friction losses.
Genuine Bearings, Counterfeits and B Grade
This is a 100% Genuine NTN Bearing. It has been sourced directly from NTN Europe in Annecy, France. It is not B graded, counterfeit or an NTN labelled product from a third party. You can read more about this in the article Counterfeit NTN and SKF Bearings
There have been widespread reports of counterfeit and substandard (B Grade) bearings being sold to unsuspecting customers in the media. Using these items often results in diminished performance, reduced life and sometimes injury to personnel.
Genuine NTN vs Other NTN
The pictures below show two NTN Bearings, the bearing on the left is from Hambini via NTN in France, and the one on the right was purchased from a well-known UK bicycle bearing distributor; they claimed to have sourced their bearings from NTN. From the outside, they both look to be identical, and the packaging that they came in appeared to be identical. Further inspection of the bearings revealed largely similar seals that would be indiscernible to the average consumer. However, upon disassembly, several discrepancies were noted; the most obvious was the 40% higher ball count on the Hambini supplied bearing. Additionally, the Hambini supplied NTN bearing had a riveted metal cage, the distributor's bearing was folded sheet metal. Folded metal cages have considerably poorer load and stiffness ratings. The distributor bearing had failed after only 600km, a root cause investigation was conducted, and the bearings were found to be of dubious quality with an unverifiable supply chain.
Hambini Engineering and Technical Support
Hambini (the individual) is well known for his encyclopedic knowledge of Aerodynamics and tribology (Bearing Engineering) and is a recognized industry expert, he is a Chartered Aerospace Engineer, and his works are often referenced in technical publications and presentations. He has sat on numerous technical committees. On the internet, his training videos on YouTube have been seen over 1 million times. The technical reference documents and publications on the Hambini website alone receive well over 25,000 unique monthly visitors.
The average satisfaction rating from customers is over 97%, one of the highest in the industry. This satisfaction rating has been achieved by providing technically superior products, world-class design and manufacturing engineering, fastidious quality control and unrivalled technical support.
If you have a question, however big or small, you can email email@example.com or use the contact form.
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Mark H. –
Pair of bearings to fit to the free hub on Bora One 50’s. Seals on the new ones seem a bit draggy out of the bag but I’m sure they’ll bed in ok
John Edmunds –
They’re Bearings.. They do bearing things. They spin 😀
Diego Marocchio –
Tim Wellman –
matthew beadle –
Great product works a treat
Smooth bearings but seem high friction – rear wheel will spin for just 20 seconds
Good quality and promt service
David W. –
Ben L. –
John H. –
Harry Brawley –
nick Kovach –