61903 LLU/LLB A5 SL - Solid-Lube, ABEC-5 Radial Bearing (CN Clearance) - 17mm x 30mm x 7mm
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61903 LLU/LLB A5L - Solid-Lube, ABEC-5 Radial Bearing (CN Clearance)- 17mm x 30mm x 7mm
Solid-Lube bearings feature a unique solid, lubricant-infused polymer that replaces the grease inside of the bearing, eliminating any space for water or dirt to gather inside of the bearing. Enduro ABEC-5 radial bearings feature 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Enduro engineers all of our radial bearings with deeper grooves to accommodate the largest balls possible, providing maximum bearing contact area and greatly increased bearing life. Designed specifically bicycle applications, the LLU/LLB seal combination on these bearings utilizes a more protective LLU seal facing outward, towards the elements, to reduce contamination from water or dirt, while the lighter-contact (less seal-drag) LLB seals facing inward keep the lube where it belongs.
This size bearing is generally used as a hub bearing for some front hub designs, bottom bracket bearing for some older square taper BBs, and can be used as a pivot bearing, though the MAX-type version of this bearing is better suited for suspension use.
The Enduro line of bearings are available in High-Carbon Chromium Steel, 440C Stainless Steel, Ceramic-Hybrid and XD-15 with Ceramic or Stainless Balls. Our bearings are always engineered with deep groove races to accommodate the largest balls possible. All of our standard bearings feature dual-lip seals that ride in a micro groove creating a full labyrinth to provide ultimate protection against the elements.
static load - 477bf,.12N
weight - 15.86g