PRAXIS M30 WORKS bottom bracket Instruction Manual
- June 3, 2024
- PRAXIS
Table of Contents
M30 BB30/PF30
68MM ROAD OR 73MM MTN
Instruction Manual
SAFETY INFORMATION – READ BEFORE RIDE
Since specific tools and experience are necessary for proper installation, it
is recommended that the product be installed by a qualified bicycle
technician.
Read the service instructions of your crank carefully prior to installing the
parts. Loose, worn or damaged parts may cause riding problems and serious
injury may occur as a result. If installation and adjustments are not carried
out correctly, the chain may come off and this may cause you to fall off the
bicycle which could result in serious injury. Read these instructions
carefully, and keep them for later use.
- Ensure that your BB30/PF30 frame shell is clean. If a BB30 frame, remove the c-clips/bearings so frame shell is empty.
- Before riding the bicycle, check that there is no play or looseness in the bottom bracket connection. Also, be sure to retighten the crankarms and pedals at periodic intervals.
- If you feel any looseness or ‘play’ in the bearings, the bottom bracket should be inspected/replaced.
- Be sure to read the instructions for your front chainrings/crank in conjunction with these service instructions.
- Do not wash the bottom bracket with high-pressure jets of water.
- For maximum performance it is required to remove and periodically inspect/clean your Praxis Works bottom bracket.
- Parts are not guaranteed against natural wear or deterioration resulting from normal use.
- For any questions regarding methods of installation, adjustment, maintenance or operation, please contact a professional bicycle dealer or call Praxis Works.
- Praxis Works assumes no responsibility for damages or injury related to improperly installed components.
READ THE STEP BY STEP INSTRUCTIONS PROVIDED ON THE OTHER SIDE.
WARRANTY
- Praxis Works Bottom Bracket products are warrantied to be free from defects in materials or workmanship for two years after original purchase. The warranty is non-transferable and valid to the original purchaser of the product only
- Any attempt to modify the product in any way such as drilling, grinding or painting will void the warranty.
- This warranty is not valid for “abused” or neglected products, or products that are damaged by improper installation.
- If a defect is found, our entire liability and your sole remedy shall be, at our option, free repair or replacement of the Praxis product.
- Except as expressly required by law, Praxis Works shall not be held liable for any indirect, special, or consequential damages.
THIS WRITTEN EXPRESS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, IMPLIED OR
EXPRESSED. This warranty gives you specific legal rights, and you may also
have other rights which vary state to state. For more information on warranty
policy and instructions for completing a warranty claim, check out the Full
Warranty Policy found at our website. www.praxis-works.com
Note: specifications are subject to change without notice. © JULY 2022 by
Praxis Works, LLC
M30 BB30/PF30 Compatibility and Spec
CRANKSET| Compatible with Praxis MTN or ROAD Cranksets 73mm for MTB Cranks
only | 68mm for Road Cranks only
FRAME SHELL| Only for BB30, PF30, and Specialized OSBB Frames
REQUIRED TOOLS
• Press Tool
• Two M30 BB Tools or wrench
• Two 3/8” Drive Ratchets| • Headset cup removal tool
• Anti-Seize
• Waterproof Grease
---|---
Number| Part| Qty
---|---|---
1| 28mm ID X 2mm Dust Cover| 1
2| LEFT/NON-DRIVE Cup 28mm ID Bearing| 1
3| Width Tolerance O-Ring| 1
4| Delrin PF Sleeve (used on PF frames)| 1
5| Orange Rubber Collet| 1
6| Black Plastic Compression sleeve| 1
7| RIGHT/DRIVE Cup 30mm ID Bearing| 1
8| 30mm ID X 1mm Dust Cover| 1
9| 30mm ID X 2mm Dust Cover| 1
10| 30mm ID X 3mm Dust Cover| 1
11| 30mm ID X 4mm Dust Cover| 1
12| 30mm ID X 5mm Dust Cover| 1
13| Wave Washer
Praxis Works, LLC 207 MCPHERSON ST. SUITE E. SANTA CRUZ, CA 95060 www.praxis-
works.com
NON-DRIVE/LEFT CUP
- Make sure Width Tolerance O-ring is on Left/Non-Drive Cup. This is required to accommodate frame BB width variances
- FOR BB30 – Remove PF Sleeve (not used with BB30!). Apply thin coating of anti-seize to both ends of the BB cup contact surfaces and the threads
- FOR PF30 – Slide PF Sleeve on. Grease both ends of the PF Sleeve contact surfaces. Then put anti-seize on the inner threads
DRIVE/RIGHT CUP
- Slide the Black Plastic Sleeve and then the Orange Rubber Collet onto the cup. This is critical to the function of your BB
- Apply thin coating of anti-seize to the Right/Drive cup threads
- Apply thin coating of grease to the outside of the Orange Rubber Collet and Black Plastic Sleeve
Next page INSTALLATION…..
BOTTOM BRACKET INSTALLATION
-
With a press tool, GENTLY press the Left/Non-Drive cup into the frame’s Left/NonDrive side until Width Tolerance O-ring just BARELY touches the side of frame
-
Start threading the Right/Drive Cup in CLOCKWISE with your M30 BB tool. As it threads in, you will feel friction build as the Orange Rubber Collet expands inside the frame. This is normal. Grab your second BB tool at this point
-
TURN Right/Drive Cup UNTIL IT STOPS.
With 2nd BB tool, hold Left/Non-Drive Cup in place while you tighten Drive cup fully. The 2nd tool gives you leverage so you feel when the Drive cup bottoms out on the Non-Drive cup.
The Drive Cup has a machined stop and by design it MUST be tightened until it bottoms out on the Non-Drive cup. This precisely sets/stops the Collet expansion. -
See next page to find correct Dust Covers for your crank. Lightly grease underside of Dust Covers and place them over bearings with Praxis logos facing outward. Now you can install the crank (See last page)
BB REMOVAL
- Unscrew the Right/Drive Cup COUNTER-CLOCKWISE and remove. Use one tool to hold the Left side for leverage, and the other to unscrew the Drive cup.
- Once the Drive Cup is removed, slide a headset cup removal tool through from the drive side and it will catch outside edge of the Non-Drive cup
- Carefully bracing the tool and frame, very gently hammer/tap the removal tool to push the Non-Drive Cup out of frame
We recommend using a 1.5” headset cup removal tool (photo) as it has a wide stance
CRANK INSTALLATION
Please see CRANK instructions at
www.praxiscycles.com/manuals
BB DUST COVER SETUP
Only 1 cover per side!
BB DUST COVER GUIDE
ROAD M30| WIDTH| CRANK| LEFT 28MM COVER| LEFT CUP
SPACER| RIGHT
CUP SPACER| RIGHT
30MM COVER
---|---|---|---|---|---|---
BSA| 68| ROAD DM
ROAD DM TR.
ROAD NON-DM| 2mm
2mm
2mm| –
–
–| –
–
–| lrnm
3mm
2mm
T47 E.B.| 68| ROAD DM
ROAD DM ‘GR.
ROAD NON-DM| 2mm
2mrn
2mm| –
–
–| –
–
–| 1mm
3mm
2mm
T47 I.B.| 86.| ROAD DM
ROAD DM TR.
ROAD NON-DM| 2mm
2mrn
2mm| –
–
–| –
–
–| 1mm
3mm
2mm
BB86| 87.| ROAD DM
ROAD DM ‘GR.
ROAD NON-DM| 2mm
2mm
2mm| –
–
–| –
–
–| 1mm
3mm
2mm
386EV0| 865| ROAD DM
ROAD DM ‘,R.
ROAD NON-DM| 2mm
2mm
2mm| –
–
–| –
–
–| 1mm
2mm
- BB30/PF30| 68| ROAD DM
ROAD DM “GR.
ROAD NON-DM| 2mm
2mm
2mm| –
–
–| –
–
–| 1mm
3mm
2mm
BBRight| 79| ROAD DM
ROAD DM ‘GR.
ROAD NON-DM| 2mm
2mm
2mm| –
–
–| –
–
–| 1 mm
3mm
2mm
MTN M30| WIDTH| CRANK| LEFT 28MM COVER| LEFT CUP SPACER| RIGHT
CUP SPACER| RIGHT
30MM COVER
---|---|---|---|---|---|---
BSA| 68| GEN1 MTN DM
GEN1 MTN NON-DM GEN2 MTN DM| 2mm
2mm
2mm| 2.5
2.5
2.5| 2.5
2 5
2.5| 1mm
5mm
4rnm
73| GEN1 MTN DM
GEN1 MTN NON.DM GEN2 MTN DM| 2mm
2mm
2mm| –
–
–| –
–
–| 1mm
5mm
4rnrn
100| GEN2 FAT CRANK| 7.6mm| –| –| 9.4mm
T47 E. B.| 73| GEN1 MTN DM
GEN1 MTN NON-DM GEN2 MTN DM| 2mm
2mm
2mm| –
–
–| –
–
–| 1mm
5mm
4mm
T47 I.B.| 90.| GEN1 MTN DM
GEN1 MTN NON-DM GEN2 MTN DM| 2mm
2mm
2mm| –
–
–| –
–
–| 1mm
5mm
4rnm
BB90| 90.| GEN1 MTN DM
GEN1 MTN NON-DM GEN2 MTN DM| 2mm
2mm
2mm| –
–
–| –
–
–| 2mm
5mm
5mm
BB92| 92| GEN1 MTN DM
GEN1 MTN NON-DM GEN2 MTN DM| 2mm
2mm
2mm| –
–
–| –
–
–| 1mm
2mm
3mrn
BB30/PF30| 73| GEN1 MTN DM
GEN1 MTN NON-DM GEN2 MTN DM| 2mm
2mm
2mm| –
–
–| –
–
–| 1mm
5mm
4rnrn
“DM” = DIRECT MOUNT SPIDER (Removable Spider)
“NON-DM = NOT DIRECT MOUNT SPIDER (Pressed-On Spider)
“DM GR” = DIRECT MOUNT SPIDER – GRAVEL CRANK (Removeable Spider “GR” crank)
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>