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White Industries Bottom Bracket Model: Square Taper BSA

  • Bottom Bracket Bearings

    Bottom Bracket Bearings

    Product Details

    Since 1996 White Industries has partnered with the folks at Enduro to ensure that the bearings we install in all our products are of the highest standards.  Along the way Enduro has continually sought out better materials, seals, greases, tolerances and manufacturing techniques to stay on the cutting edge of bearing development and performance.  Our hubs come standard with Enduro high-carbon chromium steel bearings which have the best price/performance ratio, but if you are seeking the absolute pinnacle of bearing performance, we also offer Enduro XD15’s which features ceramic balls rotating in aerospace developed, nitrogen-infused, super-stainless-steel bearing races and come with a limited lifetime warranty.

    Specs

    • Bearings sold individually
    • Grey seals always face out
    • Green seals face out
    • Bearings should be installed using a bearing press
      • See Tools>Bearing Presses
    • Refer to the Bottom Bracket pages or the tables below to determine your bottom bracket model and bearing size

    Compatibility

    • 29mm and 30mm bearings use the same cups and can be swapped back and forth
    • 24mm bearings have a smaller outer diameter than the 29mm and 30mm bearings
      • You can’t put a 24mm bearing in a cup that had a 29mm or 30mm bearing in it
      • You can’t put a 29mm or 30mm bearing in a cup that had a 24mm bearing in it
    • 30mm Heavy Duty bearings with a 47mm OD use special cups
      • Only fits T47 External Heavy Duty BB

    Standard Bearing Specs

    Spindle 

    Diameter

    Inside/Outside/Width

    (mm)

    Material

    &

    Type

    Installation Direction

    White Industries Part #

    17mm

    (Square taper spindle)

    17x30x7 Chromium Steel

    Non angular contact

    Grey seals face out

    BR6903

    24mm

    24x37x7 Stainless Steel

    Angular contact

    Green seals face out

    BR2437

    29mm

    (SRAM DUB)

    29x42x7 Stainless Steel

    Angular contact

    Green seals face out

    BR6806/29

    30mm Standard

    30x42x7 Stainless Steel

    Angular contact

    Green seals face out

    BR6806

    30mm Heavy Duty

    (Only fits T47 External Heavy Duty BB)

    30x47x9 Chromium Steel

    Non angular contact

    Either direction

    BR6906

    Ceramic Bearing Specs

    Spindle 

    Diameter

    Inside/Outside/Width

    (mm)

    Material

    &

    Type

    Installation Direction White Industries Part #

    17mm

     (Square taper spindle)

    17x30x7 Ceramic balls/martensitic stainless races Either direction

    BR6903XD

    24mm

    24x37x7 Ceramic balls/martensitic stainless races Either direction BR2437XD
    29mm

     (SRAM DUB)

    29x42x7 Ceramic balls/martensitic stainless races Either direction

    BR6806/29XD

    30mm Standard

    30x42x7 Ceramic balls/martensitic stainless races Either direction

    BR6806XD

    30mm Heavy Duty

    (Only fits T47 External Heavy Duty BB)

    30x47x9 Ceramic balls/martensitic stainless races Either direction

    NA

    What’s In The Box

    • One bearing, sold individually

     

  • Bottom Bracket Sleeves

    Bottom Bracket Sleeves

    Product Details

    These sleeves are designed to fit either our T47 internal and external bottom brackets, or our BSA Square Taper bottom brackets.  Neither are designed for our external threaded BSA bottom brackets.   They protect your crank spindle from internally routed cables, wires, or hydraulic lines, and prevent debris from getting to the insides of the bottom bracket bearings.