Super Precision Double row Tapered Roller Bearing
81630-81963CD
81630-81963CD is a double row tapered roller bearing with TDO configuration that provides a wide effective bearing distribution, ideal choice for applications requiring big overturning moments.TDO configuration bearings can be used in a fixed position or allowed to float in the housing bore.
Application: Precision Machine Tools
Super Precision Rotational Accuracy
Rotational Accuracy of Inner Race: 0.002mm
Better than Precision Grade P2
Advantages:
1.Optimized Material from famous brands.
2. We have production lines for rollers, rollers for our bearings are with logarithmic profile, to improve the service.
3. Precision-machined high-precision brass or aluminum cages, to guarantee the high rotational accurate.
81630/81963CD Timken Bearing Dimensions
D/Outer Diameter : 244.475 mmd/ Inner Diameter: 159.951mmT/ Width : 107.95 mm
C/Cup Width : 79.375 mm
R - 3,5 mm
r - 1,5 mm
Weight - 15,09 Kg
Features of TDO Configuration Bearings
Double-Row Design: The TDO (Tandem Duplex Opposite) arrangement consists of two rows of tapered rollers mounted in opposite directions, enabling the bearing to handle combined loads (axial and radial) simultaneously.
Preload Adjustment: The opposing setup allows precise preload control, enhancing rigidity and reducing deflection under heavy loads.
Integrated Construction: Typically designed as a single unit, simplifying installation and alignment compared to paired single-row bearings.
Robust Cage Design: Utilizes reinforced cages (steel or polymer) to maintain roller spacing and stability at high speeds.
Key Advantages
High Load Capacity: Optimized for heavy radial and bidirectional axial loads due to the tandem roller arrangement.
Enhanced Stiffness: Ideal for applications requiring minimal elastic deformation (e.g., machine tools).
Space Efficiency: Replaces two single-row bearings, saving space and reducing assembly complexity.
Durability: Advanced heat treatment and surface finishing technologies extend service life in harsh conditions.
Typical Applications
Automotive & Axle Systems: Wheel hubs and differentials in commercial vehicles.
Industrial Gear Drives: Wind turbines, crushers, and extruders requiring high torque transmission.
Machine Tools: Spindles and rotary tables demanding precision and rigidity.
Heavy Machinery: Gearboxes, rolling mills, and mining equipment where shock loads are prevalent.
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