M30-T47 68/73mm



M30 T47 E.B. is for installing our Praxis M30 Spindle based crank into a T47 External Bearing frame.  For 68mm Road frames and 73mm Mountain frames.



  • For Praxis M30 spindle cranks being installed on a T47 External Bearing frame
  • 68mm Road /  73mm MTN     (68mm MTN is not supported)
  • 30mm Drive bearing / 28mm NonDrive bearing | Steel cartridge bearings
  • Ceramic version is Grade 5 / ABEC 5 rating
  • Forged & machined heat-treated AL Cups
Square M30 Hand


FRAME TYPE : This specific M30 bottom bracket is made to be installed in a T47 External Bearing frame.   68mm Width Road | 73mm Width MTN

BEARINGS : Praxis M30 bottom brackets have a 30mm Drive and a 28mm NonDrive Bearing.  These are specifically made for use with our Praxis M30 spindles. A drive-side wave washer is used for preload of the bearings.     

TOOL : This specific M30 bottom bracket uses our M30 BB tools for installation and removal.   Sold separately, these are available in either a 2pk socket style tool or a wrench style tool.




Praxis warrants components to be free from defects in materials or workmanship for a period of 2 years after original purchase to the original owner. 

However, there are limitations such as normal wear and tear…as “nothing lasts forever” so please read our full Warranty.



PROCESSING –  Orders placed after 12:00pm M-F are processed/shipped the next business day.  Also, any orders placed over a weekend or holiday will be processed and shipped the next business day.  We ship with Fed Ex and charges are calculated in your shopping cart at checkout.

30 DAY / RETURNS – At Praxis, we are a core group of riders that believe you should be completely satisfied with the purchase you have made. Should an item purchased through the Praxis Online Store fail to meet your expectations, we will gladly accept its return within 30 days of original purchase date.  WEB RETURNS