Wholesale 24377-2RS Replacement Bearings for 24mm Bottom Brackets

Detailed view of the waterproof 2RS contact seal protecting the 24377 bottom bracket bearing from sweat and mud Top view of RMO brand 24377-2RS bottom bracket bearing 24x37x7mm with robust rubber seals Inner bore measurement showing 24mm size compatible with standard bicycle crank spindles RMO brand heavy duty BB bearings designed to resist lateral flex during cycling The 24x37x7 dimension bearing used as a premium replacement for press fit BB86 systems Large volume global wholesale packaging of 24377-2RS bike components supplied by RMO
Detailed view of the waterproof 2RS contact seal protecting the 24377 bottom bracket bearing from sweat and mud
❮
❯
Share:
Item No :24377-2RS (Bottom Bracket Specific)
Size (d*D*B) :24x37x7mm
Material :Chrome Steel GCr15
Lead Time :3-5 days
Weight :0.019KG
MOQ :50 pcs
Service :Support Sample Testing

⚙️Product Description:

The bottom bracket (BB) is the absolute core of a bicycle’s power transfer, and the 24377-2RS Bearing (24x37x7mm) is the engine that drives it. Specifically engineered to match the industry-standard 24mm crank spindles (like the Shimano Hollowtech II system), this bearing handles the most extreme direct pedaling forces. Located at the lowest point of the bike frame, BB bearings are constantly subjected to sweat, pooled water, and aggressive lateral flex during out-of-saddle sprinting. The 24377-2RS combats this with heavy-duty dual seals and a robust ball complement. As a reliable B2B trading partner, RMO supplies these high-stress BB bearings in bulk to global component factories and aftermarket distributors, while also offering sourcing solutions for tailored OEM crankset projects.

24377-2RS bicycle bearing

⚙️Product Features:

  • 24mm Spindle Master: The exact 24mm inner bore directly interfaces with prevalent 24mm crankset spindles, eliminating the need for plastic reducing sleeves and ensuring a stiffer drivetrain.
  • Lateral Flex Resistance: Engineered with deep raceways and high-carbon chrome steel to endure the severe side-to-side lateral loads generated when riders pedal out of the saddle.
  • Bottom-Dead-Center Waterproofing: Employs premium 2RS (dual rubber) contact seals to create an impregnable barrier against the corrosive moisture and dirt that naturally pool inside the BB shell.
  • High-Viscosity BB Grease: Pre-packed with a specialized high-viscosity, water-resistant grease that resists wash-out even under high-pressure bike cleaning.
  • B2B Customization & Scale: RMO supports large-scale wholesale for aftermarket repair kits, or customized sealing and clearance specs for original equipment BB manufacturers.

⚙️Product Applications:

Built exclusively to handle the rigors of the drivetrain, the 24377-2RS is the essential bearing for:

  • Threaded BSA Bottom Brackets requiring 24mm spindle compatibility.
  • Press-Fit BB86, BB92, and BB90 systems utilizing 24mm cranksets.
  • High-performance Road, Gravel, and Mountain Bike (MTB) bottom brackets.
  • Replacement upgrades for worn-out Shimano Hollowtech II BB cups.
  • Global BB manufacturers, CNC component factories, and professional bicycle workshops.

⚙️Precautions:

1. Keep clean2. Use with caution3. appropriate tool4. Hot-loading5. Be careful of rust
Dust will have a bad effect on the bearing, so keep the surrounding clean.Strong impact during use can easily cause scratches and indentations.Avoid replacing existing tools, and use appropriate tools.Bearings are precision parts, so hot installation is recommended.Sweat on your hands during operation will cause rust, so it is best to wear gloves.

⚙️Obtain Certificate:

About Rimao

Since its establishment in 2011, Rimao Bearing has combined international vision with local wisdom and injected innovative ideas into every bearing and pulley with its profound industry accumulation and unremitting pursuit of technology. We have not only passed CE and ROHS certification, but also set a new benchmark in the industry and led the development trend of the bearing industry.
 
We are not just a ball bearing and roller bearing importer and wholesaler. We provide real solutions to help you achieve the product and design goals set by your customers. With more than 20 years of production and sales experience, tens of thousands of models and specifications, we look forward to cooperating with you!

⚙️Technical Parameters:

Model No.
24377-2RS (Bottom Bracket Specific)
Bearing TypeThin-Section Deep Groove Ball Bearing
Dimensions
24x37x7mm (Bore d x Outer D x Height H)
Material
Chrome Steel GCr15
Spindle Fit24mm Crank Spindles
Seal Type2RS (Heavy-Duty Dual Rubber Seals)
Load FocusHigh Lateral & Radial Resistance
Precision GradeABEC-3 / ABEC-5 (Consistent pedaling rhythm)
LubricationHigh-Viscosity Water-Resistant Grease
Weight per Piece
~ 19 grams (Robust construction)
BrandRMO/Neutral/OEM/Other Brand
Package
Individual plastic bag, plastic tube or original RMO brand box
Lead Time
3-5 days for stock; 7-15 days for bulk orders
Shipping
Express (DHL/FedEx/UPS), Air Freight, Sea Freight
Payment100% TT, or 30% TT In Advance, 70% TT After Finished Production
Hot Tags : 24377-2RS bearing24mm bottom bracket bearing24x37x7 bearingcrankset bearing 24mmRMO bottom bracket partsShimano BB replacement bearing

leave a message

If you are interested in our products and want to know more details, please leave a message here, we will reply you as soon as we can.

Subject : Wholesale 24377-2RS Replacement Bearings for 24mm Bottom Brackets

Request 3D CAD Files

Please enter your business email and project details. Our technical team will review your request and send the 3D model (.step) to your inbox within 12 hours.