Praxis M30-THRU BB30/PF30 Bottom Bracket Installation Guide

Product Overview & Compatibility

Product: Praxis M30-THRU BB30/PF30

Compatibility:

• Crankset: Compatible with Praxis M30-THRU & other-brand cranks.
• Frame Shell: 68mm BB30/PF30 Road Frames | 73mm BB30/PF30 MTB Frames.
• Front Derailleur: Braze-on, Clamp-on, or Direct Mount.

Safety Information - Read Before Ride

Proper installation requires specific tools and experience. It is recommended that the product be installed by a qualified bicycle technician.

• Read the service instructions of your crank carefully before installing parts. Loose, worn, or damaged parts can cause riding problems and serious injury.
• Incorrect installation or adjustments may cause the chain to come off, leading to falls and potential injury. Read these instructions carefully and keep them for future reference.
• Ensure your frame shell is clean (for BB30 frames, remove c-clips/bearings so the frame shell is empty).
• Before riding, check for any play or looseness in the bottom bracket connection. Retighten crank arms and pedals periodically.
• If you feel looseness or 'play' in the bearings, the bottom bracket should be inspected or replaced.
• Always 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, remove, periodically inspect, and clean your Praxis Works bottom bracket.
• Parts are not guaranteed against natural wear and tear resulting from normal use.
• For questions regarding installation, adjustment, maintenance, or operation, contact a professional bicycle dealer or call Praxis Works.
• Praxis Works assumes no responsibility for damages or injury related to improperly installed components.

For the latest instructions and knowledge base updates, visit: praxiscycles.com/tech-docs/

Warranty

• Praxis Works Bottom Bracket products are warranted against defects in materials or workmanship for two years after original purchase.
• The warranty is non-transferable and valid only to the original purchaser.
• Any attempt to modify the product (e.g., drilling, grinding, painting) will void the warranty.
• This warranty is not valid for "abused" or neglected products, or products damaged by improper installation.
• If a defect is found, Praxis Works will, at its option, provide free repair or replacement.
• Praxis Works shall not be liable for any indirect, special, or consequential damages, except as expressly required by law.

This written express warranty is in lieu of all other warranties, implied or expressed. It grants specific legal rights, and you may have other rights that vary by state. For more information on warranty policy and claims, visit: www.praxis-works.com

Note: Specifications are subject to change without notice. © APRIL 2024 by Praxis Works, LLC. Revision G.

Required Tools

The following tools are required for installation:

• ?️ Bearing Press Tool
• ? 2x M30 BB Tools
• ? 2x 3/8" Drive Ratchets
• ? Headset cup removal tool
• ? Anti-Seize Compound
• ? Waterproof Grease

Visual Description: Images show tubes labeled "GREASE" and "ANTI-SEIZE", a bearing press tool, a cup remover tool, two socket wrenches, and two M30 BB tools.

Included Parts

The following parts are included with the bottom bracket:

Visual Description: A diagram shows the LEFT/NON-DRIVE and RIGHT/DRIVE cups with numbered components corresponding to the table.

BB Cup Preparation

Non-Drive/Left Cup Preparation

1. Ensure the Width Tolerance O-ring is on the Left/Non-Drive Cup. This accommodates frame BB width variances.
2. For BB30: Remove the PF Sleeve (not used with BB30). Apply a thin coating of anti-seize to both ends of the BB cup contact surfaces and the threads.
3. For PF30: Slide the PF Sleeve on. Grease both ends of the PF Sleeve contact surfaces, then apply anti-seize to the inner threads.

Visual Description: Diagrams illustrate the BB30 setup (42mm diameter) and PF30 setup (46mm diameter), showing the placement of the Width Tolerance O-ring, anti-seize, and the PF Sleeve.

Drive/Right Cup Preparation

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

Visual Description: A diagram shows the Drive/Right cup with the Black Plastic Sleeve and Orange Rubber Collet installed, along with anti-seize on the threads.

Bottom Bracket Installation

Step 1: Press Left/Non-Drive Cup

With a press tool ?️, GENTLY press the Left/Non-Drive cup into the frame's Left/Non-Drive side until the Width Tolerance O-ring just BARELY touches the side of the frame. DO NOT COMPRESS WIDTH-TOLERANCE O-RING. ❌

Visual Description: A diagram shows the bearing press tool installing the left cup into a bicycle frame's bottom bracket shell. An arrow points to the O-ring with a warning not to compress it.

Step 2: Thread Right/Drive Cup

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 ✔️. You will need your second BB tool for the next step.

Visual Description: A diagram shows the right cup being threaded into the frame. Another diagram shows anti-seize applied to the threads.

Step 3: Tighten Right/Drive Cup

TURN Right/Drive Cup UNTIL IT STOPS. ? With the second BB tool, hold the Left/Non-Drive Cup in place while you tighten the Drive cup fully. The second tool provides leverage to feel when the Drive cup bottoms out on the Non-Drive cup. The Drive Cup has a machined stop and MUST be tightened until it bottoms out on the Non-Drive cup to precisely set/stop the Collet expansion.

Visual Description: A diagram shows two M30 BB tools being used simultaneously to tighten the right cup while holding the left cup.

Step 4: Install Dust Covers

See the next page for correct Dust Covers for your crank. Lightly grease the underside of the Dust Covers and place them over the bearings with Praxis logos facing outward. ➡️ Now you can install the crank.

BB Dust Cover Setup

Only 1 cover per side is used.

Visual Description: A diagram shows the LEFT/NON-DRIVE and RIGHT/DRIVE cups with dust covers.

Reference Frame BB Specs

• BB30: 42mm diameter, 68mm ROAD / 73mm MTB
• PF30: 46mm diameter, 68mm ROAD / 73mm MTB

BB Dust Cover Guide

This guide specifies the correct dust cover and cup spacer sizes for various crank and frame combinations.

Crank Spindle Measurement Check! ?

• 103mm or longer for Road
• 108mm or longer for MTN

For more information, visit: www.praxiscycles.com/manuals