The Best Lubrication and Cleaning Routine for Your Shimano SM-BB5700

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The Shimano SM-BB5700 [paid link] bottom bracket is a high-performance component designed for road cyclists who demand precision and reliability. Proper maintenance of this Hollowtech II bottom bracket is essential for ensuring longevity, optimal performance, and a smooth riding experience. Regular cleaning and lubrication not only prevent premature wear but also protect against contamination from water, dirt, and debris.

This guide details a professional routine to clean and lubricate the SM-BB5700 [paid link], along with tips to identify signs of wear and best practices for consistent upkeep.

Understanding the Shimano SM-BB5700 Bottom Bracket Design

The SM-BB5700 [paid link] is part of Shimano’s 105 series and features a threaded, external bearing system tailored for Hollowtech II cranksets. The cups are machined with high precision and house durable sealed cartridge bearings, which are factory greased and designed to operate under significant pedaling loads.

While the sealed design reduces the need for constant servicing, environmental exposure—especially during wet or dusty rides—makes periodic cleaning and lubrication critical.

Signs Your SM-BB5700 Needs Cleaning and Lubrication

You should consider servicing your SM-BB5700 when you notice:

  • Increased resistance or roughness while pedaling.
  • Creaking or clicking noises coming from the bottom bracket area.
  • Evidence of dirt or water ingress on the crank arm junctions.
  • Black grease or fluid leaking from the bearing area.
  • Crankset play or looseness, even when bolts are properly torqued.

Tools Required for Cleaning and Lubrication

  • Bottom bracket removal tool (Shimano Hollowtech II compatible)
  • Crank arm removal tool (if not self-extracting)
  • Torque wrench [paid link]
  • Degreaser (bike-specific, non-corrosive)
  • Isopropyl alcohol
  • Clean, lint-free cloths
  • Bearing grease (high-quality waterproof bike grease)
  • Anti-seize compound or threadlocker (for reinstalling)

Cleaning Routine for Shimano SM-BB5700

1. Remove Crankset and Bottom Bracket

Begin by removing the crankset to expose the bottom bracket cups. Use the Hollowtech II tool to unthread both the drive-side and non-drive-side cups. Inspect the threads for dirt or corrosion.

2. Clean the Shell and Cups Thoroughly

Use a cloth and bike-specific degreaser to wipe down the inside of the bottom bracket shell and both cup assemblies. Avoid using excessive water pressure near the bearings, especially if you’re cleaning without removing them from the cups.

For internal cleaning, dampen a cloth with isopropyl alcohol and rotate it through the bottom bracket shell to eliminate any embedded grime.

3. Inspect the Bearings

While rotating each bearing by hand, feel for any gritty or rough movement. Smooth rotation is a sign that the bearing is in good condition. If you feel resistance or hear grinding, bearing replacement may be necessary.

Lubrication Routine for Shimano SM-BB5700

1. Grease the Bearing Seals Lightly

Although the SM-BB5700 uses sealed bearings, it is beneficial to lightly lubricate the external seals with a waterproof grease. This helps repel moisture and extends bearing life.

2. Apply Grease to the Cup Threads

Before reinstalling, apply an anti-seize compound or high-pressure grease to the threads of the bottom bracket cups. This step prevents galvanic corrosion between the aluminum cups and the bike’s steel or alloy frame.

3. Reinstall with Correct Torque

Thread the bottom bracket cups back into the shell (drive-side first), tightening to Shimano’s specified torque settings (typically 35-50 Nm). Use a torque wrench [paid link] to ensure accuracy and prevent thread damage.

Ongoing Maintenance Schedule

Establish a regular maintenance schedule based on ride conditions:

  • Every 3 Months (or 1,000–1,500 km): Basic external wipe-down and noise check.
  • Every 6 Months (or 3,000 km): Full cleaning, inspection, and light re-greasing of seals and threads.
  • Annually (or 5,000+ km): Complete removal, deep clean, and re-greasing. Inspect for play or damage.

Storage and Ride Conditions That Impact Lubrication

Riders who frequently encounter rain, mud, or coastal environments should service their SM-BB5700 more frequently. Saltwater exposure in particular accelerates bearing degradation and corrosion. Storing your bike in a dry, temperature-controlled area also reduces the risk of internal condensation, which can wash away lubricant.

Avoiding Common Maintenance Mistakes

Incorrect cleaning and lubrication practices can shorten the lifespan of the SM-BB5700. To avoid issues:

  • Never use pressure washers near the bottom bracket area.
  • Don’t overpack bearings with grease—sealed bearings only need external lubrication.
  • Always use a torque wrench [paid link] when reinstalling to avoid damaging threads or bearings.
  • Avoid using automotive greases not designed for bicycle components.

FAQs

How often should I clean and lube my Shimano SM-BB5700?

For general use, every 6 months is ideal. In wet or off-road conditions, inspect every 3 months.

Can I regrease the bearings inside the SM-BB5700?

No. The sealed cartridge bearings are not designed to be opened. If they’re rough, replace them entirely.

What grease is best for bottom bracket threads?

Use a high-pressure waterproof bike grease or anti-seize compound, especially on metal frames.

Why is my bottom bracket still noisy after greasing?

Noise may come from the crank arms, pedals, or chainring bolts. Ensure all interfaces are clean and properly torqued.

Do I need to remove the bottom bracket every time I clean it?

Not always. For light cleaning, wiping the external area and applying seal grease is sufficient. Deeper cleaning requires removal.

What happens if I don’t lubricate the bottom bracket threads?

Unlubricated threads may seize due to corrosion, making future removal difficult and potentially damaging the frame.

Conclusion

Maintaining the Shimano SM-BB5700 with a regular cleaning and lubrication routine ensures optimal efficiency, smooth pedaling, and long-term durability. With the right products and techniques, even home mechanics can extend the lifespan of their bottom bracket and avoid common pitfalls that lead to premature failure. Stay proactive with your maintenance to keep your ride silent and strong.