Manual d'instruccions del suport inferior Praxis BSA 68/73 mm

Introducció

This manual provides essential information for the proper installation, operation, and maintenance of your Praxis BSA 68/73mm Bottom Bracket. Designed for compatibility with Shimano Hollowtech II cranksets, this bottom bracket features a robust construction with CNC machined 7075-T6 aluminum cups and durable sealed Enduro 2437 steel bearings.

Please read this manual thoroughly before beginning installation to ensure safe and optimal performance of your bicycle components.

Producte acabatview

Praxis BSA 68/73mm Bottom Bracket, angled view

Figura 1: En angle view of the Praxis BSA 68/73mm Bottom Bracket, showing the main body and threaded cups with orange seals.

Praxis BSA 68/73mm Bottom Bracket, side view with markings

Figura 2: lateral view of the Praxis BSA 68/73mm Bottom Bracket, highlighting the "SHIM" and torque specifications (40N-m) on the cups.

The Praxis BSA 68/73mm Bottom Bracket is engineered for durability and smooth performance. It features precision CNC machined 7075-T6 aluminum cups for strength and a long-lasting anodized finish. Inside, sealed Enduro 2437 steel bearings provide excellent fluidity and resistance to wear.

Configuració i instal·lació

Eines necessàries:

Praxis M30 Bottom Bracket Tool (specific tool required for installation)
Clau dinamométrica
Grease (for threads)
Draps nets

Passos d'instal·lació:

Prepara el marc: Ensure the bicycle's bottom bracket shell threads are clean and free of debris. It is recommended to have the bottom bracket shell faced and chased by a professional bicycle mechanic for optimal alignment and performance.
Aplicar greix: Apply a thin, even layer of high-quality bicycle grease to the threads of both the bottom bracket shell and the Praxis bottom bracket cups.
Install Drive Side Cup: Identify the drive-side cup (typically marked 'R' for right or drive side). Carefully thread it into the drive-side of the bottom bracket shell. Ensure it threads smoothly by hand to avoid cross-threading.
Install Non-Drive Side Cup: Identify the non-drive side cup (typically marked 'L' for left or non-drive side). Carefully thread it into the non-drive side of the bottom bracket shell. Again, ensure it threads smoothly by hand.
Torque Cups: Using the Praxis M30 Bottom Bracket Tool and a torque wrench, tighten both cups to the manufacturer's specified torque. The cups are marked with a recommended torque of 40 Nm. Adhering to this specification is crucial for proper function and longevity.
Install Crankset: Refer to your crankset manufacturer's instructions for proper installation onto the newly installed bottom bracket.

Nota important: Incorrect installation or over-tightening can damage the bottom bracket or bicycle frame. If you are unsure about any step, consult a professional bicycle mechanic.

Funcionament

Once properly installed, the Praxis BSA 68/73mm Bottom Bracket operates seamlessly with your Shimano Hollowtech II compatible crankset. Its sealed Enduro 2437 steel bearings are designed to provide smooth, low-friction rotation for efficient power transfer.

No specific user operation is required for the bottom bracket itself beyond ensuring it is correctly installed and maintained. The bottom bracket facilitates the rotation of your crankset, allowing you to pedal your bicycle.

Manteniment

Regular maintenance will extend the lifespan and ensure the smooth operation of your Praxis BSA 68/73mm Bottom Bracket.

Neteja regular: Periodically clean the exterior of the bottom bracket and the surrounding frame area to prevent accumulation of dirt and grime, which can ingress into the bearings over time.
Comprovació de reproducció: Every few months, or if you notice any unusual noises from the bottom bracket area, check for play in the crankset. To do this, firmly grasp both crank arms and attempt to move them side-to-side relative to the frame. Any noticeable movement indicates potential wear or loosening.
Torqueu de parell: If play is detected, or as part of a comprehensive bike service, check the torque of the bottom bracket cups using your torque wrench and Praxis M30 Bottom Bracket Tool. Re-tighten to 40 N-m if necessary.
Inspecció de rodaments: While the bearings are sealed, extreme conditions or prolonged use may lead to wear. If the bottom bracket feels rough or noisy during rotation (after removing the chain from the chainrings and spinning the cranks by hand), it may be time for bearing replacement or bottom bracket overhaul/replacement. This typically requires specialized tools and expertise.

Precaució: Do not attempt to disassemble the sealed bearings unless you have the proper tools and knowledge, as this can damage the unit.

Resolució de problemes

Problema	Causa possible	Solució
Creaking/Clicking Noise from BB Area	1. Loose bottom bracket cups 2. Insufficient grease on threads 3. Coixinets desgastats 4. Crankset bolts loose 5. Seatpost/saddle or pedal issues (often mistaken for BB noise)	1. Re-torque bottom bracket cups to 40 N-m. 2. Remove cups, clean threads, re-grease, and re-install. 3. Inspect bearings for roughness; replace bottom bracket if necessary. 4. Check and tighten crankset bolts according to crank manufacturer's specs. 5. Isolate noise by checking other components.
Crankset has Side-to-Side Play	1. Loose bottom bracket cups 2. Coixinets desgastats 3. Incorrect crankset installation	1. Re-torque bottom bracket cups to 40 N-m. 2. Replace bottom bracket if bearings are worn. 3. Re-install crankset according to manufacturer's instructions.
Rough or Grinding Feel when Pedaling	1. Contaminated or worn bearings 2. Insufficient lubrication (less common for sealed units)	1. Replace bottom bracket. 2. Ensure proper installation and sealing.

If problems persist after attempting these solutions, it is recommended to seek assistance from a qualified bicycle mechanic.

Especificacions

Característica	Detall
Nom del model	Pedalier BSA 68mm Road Shimano 68-0001
Número de part	68-0001
Marca	Praxis
Compatibilitat	BSA 68/73mm Road frames, Shimano Hollowtech II cranksets
Material	CNC Machined 7075-T6 Aluminum Cups
Coixinets	Sealed Enduro 2437 Steel Bearings
Color	Negre
Parell recomanat	40 Nm
Dimensions del paquet (L x W x H)	4.37 x 2.24 x 2.13 polzades
Pes del paquet	0.13 quilos

Garantia i Suport

Specific warranty information for the Praxis BSA 68/73mm Bottom Bracket is not provided in this manual. Please refer to the official Praxis website or contact their customer support for detailed warranty terms and conditions.

For technical support, installation queries, or any issues not covered in this manual, please visit the Praxis Cycles official weblloc o contactar amb el seu departament d'atenció al client.

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Praxis 68-0001