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RNCBMX TITANIUM CERAMIC BOTTOM BRACKET BEARINGS
$150.00
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Product Details
RNC BMX TITANIUM CERAMIC BOTTOM BRACKET BEARINGS
The RNC BMX Titanium Ceramic Bottom Bracket Bearings are engineered to deliver an extreme combination of low weight, strength, wear resistance, and smooth operation for high-performance BMX applications.
TITANIUM BEARING RACES
The bearing races are precision CNC machined from 6Al-4V titanium, heat treated and aged to approximately 170,000 PSI tensile strength.
The titanium races are then electroless nickel-silicon carbide plated for exceptional surface hardness and wear resistance.
The electroless nickel coating reaches approximately 70 Rockwell C, while the embedded silicon carbide nanoparticles measure approximately 9.5 on the Mohs hardness scale — approaching the hardness of diamond.
This extremely hard, wear-resistant surface is designed to provide exceptional bearing life while retaining the weight savings of titanium races.
SILICON NITRIDE CERAMIC BALLS
The bearings use premium Si3N4 silicon nitride ceramic balls, selected for their exceptional strength, toughness, hardness, and low weight.
Unlike conventional caged BMX bearings, these are full-complement bearings, eliminating the traditional ball cage and allowing more bearing balls to be used.
- 20 ceramic balls per bearing
- Standard bearings typically use approximately 10 balls
- Increased number of balls distributes loads across a greater contact area
- Extra-deep bearing races provide additional contact and wear surface
The combination of the 20-ball full-complement design and deeper races is engineered for substantially increased load capacity and durability compared with conventional BMX bottom bracket bearings.
CNC-MACHINED PTFE SEALS
The bearing seals are CNC machined from PTFE (Teflon) for extremely low friction, excellent chemical resistance, and long-lasting smooth operation.
WEIGHTS
19mm — 74 grams
22mm — 62.8 grams
24mm — 56.4 grams
FEATURES
- CNC-machined 6Al-4V titanium races
- Heat treated and aged to approximately 170,000 PSI tensile strength
- Electroless nickel-silicon carbide plated
- Approximately 70 HRC surface hardness
- Premium Si3N4 silicon nitride ceramic balls
- 20-ball full-complement design
- Extra-deep bearing races
- CNC-machined PTFE seals
- Available for 19mm, 22mm, and 24mm BMX spindles
- Extremely lightweight construction
RNC BMX — Precision BMX Components
RNCBMX TITANIUM CERAMIC BOTTOM BRACKET BEARINGS