Information

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This is our solution for Pressfit 30 (PF30) bottom bracket systems and incorporates a “thread-together” design that keeps the bearings aligned, prevents creaking and has a built in sleeve to protect against contamination as well as offering room for Di2 wiring.  It is made in our shop using U.S. sourced 6061-T6 aluminum and comes standard with Enduro stainless steel bearings and can be upgraded to Enduro XD-15 ceramic bearings.

“PF30” is a bottom bracket shell type that was originally designed to use internal bearings (inside the BB shell) with a short 30mm diameter crank spindle. With this thread-together bottom bracket we have located the bearings externally of the BB shell to work specifically with longer 30mm and 29mm crank spindles. 

Features

• Comes in four bearing sizes to fit:
  • 30mm White Industries M/A/R/G cranks as well as other brands of 30mm spindle cranks
  • 29mm SRAM DUB cranks
• Dust seals included with all models
• No “sleeve” needed as it’s part of the design

Specs

• 46mm O.D. for “slip-fit” into 46mm I.D. “PF30” bottom bracket shells
• Designed to be used on 68mm or 73mm wide bottom bracket shells
• Weight/pr (with bearings and seals)
  • 30mm: 110g
  • 29mm: 115g

Cup Dimensions, Spacers and Bearing Info

• 30mm White Industry cranks
  • No spacers needed with R30 and G30 cranks on 68mm shells (73mm shells are too wide)
  • No spacers needed with M30 and A30 cranks on 73mm shells
    • On 68mm shells, use one 2.5mm spindle spacer on each side

See the chart below for the “OBW” (Outer Bearing Width) of each bottom bracket and compare that to the allowed OBW for your crank (ask the crank manufacturer for this, not us!).  Most cranks these days have an adjustable bearing preload collar on them that can accommodate slightly wider/narrower OBW’s than their target number, but again, you’ll need to check with your particular crank’s manufacturer.  When in doubt, start with fewer spacers than you think you need so you don’t crush and destroy your bearings!

• If the allowed OBW of your crank is less than the OBW of our bottom bracket, our bottom bracket will not work (it’s too wide for the crank)
• If the allowed OBW of your crank is more than the OBW of our bottom bracket, our bottom bracket will work but you may need spacers

How many spacers?

• Other brands of 30mm cranks
  • Compare the allowed OBW of the crank to our bottom bracket OBW
• 29mm SRAM DUB cranks
  • Using SRAM’s charts, look at the PressFit 30 row, find your shell width (68mm or 73mm), find your crank model, then see what spacers they require
    • SRAM DUB road crank spacer chart
    • SRAM DUB mountain crank spacer chart
  • Our cups w/seals add 2mm in overall width (1mm for each cup/side) compared to SRAM DUB BB cups, so subtract 1mm from each side of SRAM’s spacer numbers
    • If SRAM calls for no (zero) outer/spindle spacers on the non-drive side (left), you may have to subtract 2mm from the drive side (right) to make things fit
      • • Ex: If SRAM calls for 3mm of spacer on the right and zero on the left, run 1mm on the right and zero on the left.

 

 

Tools

BBE29PF30	PressFit30 style, thread-together 46mm OD cups, 29mm spindles	12 notch/46mm  or 16 notch/52.2mm	Abbey OSB “TT” Abbey BSA30 Park BBT-79 *Park BBT-47 *Enduro BBT-025 Enduro TorqTite spanner
BBE30PF30	PressFit30 style, thread-together 46mm OD cups, 30mm spindles	12 notch/46mm  or 16 notch/52.2mm	Abbey OSB “TT” Abbey BSA30 Park BBT-79 Park BBT-47 Enduro BBT-015 Enduro BBT-025 Enduro TorqTite spanner

Torque

• Cups on frame: 26-37 ft lbs (35-50 Nm)

Techical Documents

• MR30 Crank and Bottom Bracket Compatibility Chart
• Bottom Bracket Tool Compatibility
• MR30 Crank Assembly