IMPORTANT: This listing is for a full set of Frame Pivot Bearings only. No other hardware such as nuts, bolts, washers will be supplied.
Any pictures indicated in this listing is for reference to the year/design of frame in question.
Configuration: MAX Complement (Fully loaded with ball bearings – no cage/retainer present)
Material: 100CR6 Chrome Steel for balls and races
Grease: Mobil XHP222 or Sinopec HTHS (High Specification Water Resistant Grease)
Seal: 2RS (2 Rubber Seals, 1 each side)
Max Complement (Also known as Full Complement)
Max Complement bearings for frame suspension pivots. Max type bearings can take a much higher load as they have 40% more balls than standard wheel bearings. A Frame Pivot Bearing experiences only a minor degree of movement concentrated in a small area, thus strength across the axis of load is of the utmost importance. To achieve this, the races are fully loaded with balls to ensure that the load passes through actual balls and not gaps.
If a supplier selling frame pivot bearings fails to mention they supply MAX complement, it’s very probable they are bearings that contain retainers and therefore cannot withstand higher loads often experienced in suspension frames. These can fail prematurely. Non-MAX bearings are usually cheaper too.
Note, standard wheel bearings have a metal or nylon retainer with gaps in between, which is perfect for wheels/BB’s where full rotation occurs.
Grease & Seals
The bearings are filled with the correct volume of high-performance water resistant marine grease to prolong the life of your bearing. The seals are usually 2 high quality rubber seals, which is where the 2RS is derived from.
The precision quality of bearings are rated by the ABEC scale. The ABEC rating for bearings commences at ABEC 1 which is seen in most bearing applications for bicycles supplied from the factory. Higher end bearings for bikes are usually ABEC 3. Kinetic in almost every case supplies ABEC 3 rated bearings. Suppliers that do not mention the ABEC rating, it could be safe to assume are supplying inferior/cheap/unrated or low rated bearings.