White Industries - Square Taper Bottom Bracket

This is one of the first products White Industries ever produced way back in 1988. We’ve updated the design along the way and it remains a popular item all these years later despite the introduction of more “modern” crank and bottom bracket designs.  This is a BSA “square taper” style bottom bracket which uses BSA threads and a spindle that uses a square/tapered crank arm interface. It is compatible with White Industries ENO square taper and Road Square Taper cranks as well as other brands that use a J.I.S. (Japanese Industrial Standard) taper such as Shimano, Sugino, and others. These bottom brackets are not compatible with Campy cranks, which use an ISO or “Campy” style taper.

Specs

• 1.37” x 24 TPI threads
• Spindle has “shoulders” machined into it to which the bearings seat against
• “Symmetric” design with equal length on both sides. Not laterally adjustable.
  Bearing preload set via the adjustable non-drive side cup and lockring
• Thread depth: 12.4mm
• Stainless Steel spindle
• Spindle lengths: 108mm, 113mm and 121mm
• Shell width: 68mm
• Weights:
  • 108 mm: 207g
  • 113 mm: 214g
  • 121 mm: 227g
    
• Bearings:
  • 2x Enduro ABEC 5 61903 LLB steel radial bearings
  • There are no “external” seals on this bottom bracket, only the seals built into the bearings

Manufacturer Information
White Industries
1325 ROSS STREET
PETALUMA, CA 94954, United States
Fon: +1 707-769-5600