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

1. Make sure Width Tolerance O-ring is on Left/Non-Drive Cup. This is required to accommodate frame BB width variances
2. 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
3. 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

1. Slide the Black Plastic Sleeve and then the Orange Rubber Collet onto the cup. This is critical to the function of your BB
2. Apply thin coating of anti-seize to the Right/Drive cup threads
3. Apply thin coating of grease to the outside of the Orange Rubber Collet and Black Plastic Sleeve

Next page INSTALLATION…..

BOTTOM BRACKET INSTALLATION

1. 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
   
2. 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
   
3. 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.
   
4. 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

1. 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.
2. 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
3. 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)

WWW.PRAXISCYCLES.COM/MANUALS

Documents / Resources

PRAXIS M30 WORKS bottom bracket [pdf] Instruction Manual M30 WORKS bottom bracket, M30, WORKS bottom bracket, bottom bracket, bracket

References

• User Manual