TIRAMIC? BEARING
TOKEN has revolutionized industry preconceptions about how carbon composites, titanium, ceramic, and alloy materials can be applied to high performance cycling components. From that perspective, our engineers have applied their unique ingenuity and skill to methodically design a complete line of carbon fiber components to transform the cycling experience. Their extraordinary capacity to utilize the most technological methods to shape the best combinations of materials is an essential ingredient in the most sought-after frames & components in the cycling peloton.
TOKEN is the only manufacturer to have such an extensive product line as to offer complete Road racing and TT Bike made entirely of its own components.
TIRAMIC® BEARING
Patent Tiramic Bearings
- Tiramic Bearings: A patented product of Token Products Inc. that is composed of a set of Titanium coated bearing race & cone, combined with solid ceramic balls & Klüber lubricant.
- Patent No.: M304599
Tiramic Bearing Technology (TBT)
- Non-Corrosive
- Weight Reduction: Ceramic Balls are 60% Lighter than Steel Balls
- Durability: Lifetime 5~10X Longer than Steel Balls
- Accelerate Faster: Speed Increase Approaching 4%
- Smooth Rolling: Ceramic Balls are Rounder and Smoother than Steel Balls
- Low Friction: To keep momentum
- Less Vibration: Resulting in a smooth ride
- Resistant to Contamination
TBT Distinctive Mark
- All Token Products equipped with Tiramic Bearings carry a distinctive 「TBT」 Sticker or Laser Etched Logo
- Token Products equipped with Tiramic Bearings include: Hubs, Integrated BB, ISIS Drive BB, Square BB, Rear Derailleur Pulley, Headset
Tiramic Bearing comments from Athletes
「I began using Token』s Tiramic Bearing Pulleys in the spring of 09』. Since then I have had no issue with them. The Tiramic Bearings do make a noticeable difference in reducing chain drag when compared to other pulleys I have used. They spin incredibly freely, shed dirt and grime better than others. Thanks to their design they always catch stares from other riders. A truly outstanding product and well worth the nominal investment.」 Jeff Irwin – Pro mountain bike racer, Gunnison, Colorado USA
The Comparison Chart of Starting Torque & Turning Torque between Normal Bearings & Tiramic Bearings.
Starting Torque:
- Normal Bearing is 0.27
- Tiramic Bearing is 0.20
- The rate = 0.20/0.27*100% = 74%
This means that the Starting Torque of Tiramic Bearing is only 74% of Normal Bearing. That』s why you can get 「Lighter Pedaling」.
Turing Torque:
- The Normal Bearing is 0.15
- Tiramic Bearing is 0.10
- The rate = 0.10/0.15*100% = 67%
This means that the Turing Torque of Tiramic Bearing is only 67% of Normal Bearing. That』s why you can get 「More Smooth Running」.
Titanium Coating (Races)
- Hardness : HV2800~3000 kg/mm2
- Low Friction Coefficient
- Extremely strong adhesion method: molecular bond to substrate metal
- Titanium coating thickness: 3 µm (0.000118」)
- Able to withstand temperatures up to 600°C (1,100°F) in air.
- Resistant to corrosion and chemical impurities
- Non-toxic
- Metallic gold appearance
- Fatigue resistant
Dual lip labyrinthian low-friction seal
This special designed seals keep the grease inside the bearing and prevent dust and/or water from getting in. The light-contact type seal has a high-quality water proof function with extremely low friction. Resulting in smooth clean rolling, longer lasting lower maintenance bearings.
Reinforced, stabilized nylon cage
The ball cage is made of heat stabilized nylon with 33% fill short fiberglass reinforcement for added strength. The nylon material provides a natural lubricity for longer life. Fiberglass reinforcement allows higher operating temperatures than plain nylon, yet is more resistant to fatigue than metallic cages. Short fiberglass allows greater flexibility than steel or normal fiberglass, especially under misalignment. That means longer life in mounted bearings where some degree of misalignment is unavoidably encountered.
Ceramic Balls
Ceramic Ball Characteristics
- Composition: Si3N4
- Density: 3.2g/cm3
- Vickers: 1700~2700kg/mm2
- Bending Strength: 3500Mpa
- Thermal Expansion coefficient: 3.2x10-6/℃
- Resistance: ＞1014Ω．cm
- Deviation from Spherical Form 0.13 µm
- Surface Roughness(µm Ra) 0.020 and better
- Grade 5 Balls
