Tapered Roller Bearings – TDO (Tapered Double Outer) Imperial

Tapered Roller Bearings Product Introduction

**TIMKEN Tapered Roller Bearings – TDO (Tapered Double Outer) Series: Superior Load Handling for Demanding Applications**

TIMKEN Tapered Roller Bearings are renowned for their exceptional durability, precision, and ability to manage combined radial and axial loads in high-performance industrial and automotive systems. Among TIMKEN’s extensive bearing portfolio, the **TDO (Tapered Double Outer) series**, including both metric (0) and imperial (2093) designs, stands out for its robust construction and versatility in heavy-load applications. These bearings are engineered to deliver unmatched reliability in environments where extreme forces, misalignment, or variable speeds are common.

### **Technical Features & Design Advantages**
The **TDO tapered roller bearings** feature a unique double outer ring and single inner ring configuration, enabling them to accommodate substantial radial and thrust loads in both directions. This design is particularly beneficial in applications where space constraints or shaft deflection might otherwise compromise performance. Key features include:

– **Optimized Load Distribution**: The tapered rollers are precision-ground to ensure even load sharing, reducing stress concentrations and extending service life.
– **Enhanced Rigidity**: The double-cup (outer ring) design increases stiffness, making these bearings ideal for applications with high moment loads or shaft misalignment.
– **Superior Lubrication Retention**: Advanced sealing options and optimized internal geometries help maintain consistent lubrication, even in harsh operating conditions.
– **Interchangeability & Standardization**: Available in both metric (0-series) and imperial (2093-series) sizes, TIMKEN TDO bearings are designed to replace competitor units seamlessly while offering improved performance.

### **Performance Benefits**
TIMKEN’s TDO tapered roller bearings excel in applications requiring high load capacity, shock resistance, and long-term reliability. Their ability to handle **combined axial and radial loads** makes them indispensable in heavy machinery, while their precision ensures smooth operation in high-speed scenarios. Additional advantages include:

– **Extended Bearing Life**: Advanced steel alloys and heat treatment processes enhance fatigue resistance, reducing downtime and maintenance costs.
– **Reduced Friction & Heat Generation**: Precision-engineered roller profiles minimize friction, improving efficiency and reducing energy consumption.
– **Versatility Across Industries**: Suitable for both slow, heavy-load applications (e.g., mining equipment) and high-speed operations (e.g., gearboxes).

### **Typical Applications**
TIMKEN TDO tapered roller bearings are widely used in industries where reliability under extreme conditions is critical. Common applications include:

– **Industrial Machinery**: Conveyor systems, crushers, and heavy-duty gearboxes requiring high radial and thrust load support.
– **Automotive & Transportation**: Wheel hubs, differential systems, and truck axles where durability and load management are essential.
– **Precision Equipment**: Machine tool spindles and rolling mills where alignment accuracy and minimal deflection are crucial.

For engineers and maintenance professionals seeking a robust, high-performance bearing solution, TIMKEN’s TDO series offers a proven combination of strength, precision, and longevity—ensuring optimal performance in the most demanding environments.

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Part Number Series d - Bore D - Cup Outer Diameter B - Cone Width C - Double Cup Width T - Bearing Width across Cones C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)
EE571703 - 572651D
570000
431.800 mm
673.100 mm
87.833 mm
127.000 mm
192.639 mm
528000 N
3540000 N
EE843220 - 843291CD
843000
558.8 mm
736.600 mm
88.108 mm
138.113 mm
187.328 mm
536000 N
3600000 N
635 - 632D
635
57.150 mm
136.525 mm
41.275 mm
76.2 mm
95.250 mm
60400 N
406000 N
EE571703 - 572653D
570000
431.800 mm
673.100 mm
87.833 mm
152.400 mm
192.639 mm
528000 N
3540000 N
EE911600 - 912401D
910000
406.400 mm
609.600 mm
84.138 mm
123.825 mm
187.325 mm
477000 N
3210000 N
639 - 632D
635
63.500 mm
136.525 mm
41.275 mm
76.2 mm
95.250 mm
71600 N
481000 N
EE571703 - 572651CD
570000
431.800 mm
673.100 mm
87.833 mm
127.000 mm
192.639 mm
528000 N
3540000 N
EE911618 - 912401D
910000
411.163 mm
609.600 mm
84.138 mm
123.825 mm
187.325 mm
477000 N
3210000 N
643 - 632D
635
69.850 mm
136.525 mm
41.275 mm
76.2 mm
95.250 mm
71600 N
481000 N
EE640192 - 640262D
640000
488.950 mm
666.674 mm
94.458 mm
158.750 mm
206.375 mm
614000 N
4130000 N
EE91702 - 91113XD
91000
177.800 mm
285.750 mm
63.5 mm
92.075 mm
136.525 mm
127000 N
853000 N
644 - 632D
635
71.438 mm
136.525 mm
41.275 mm
76.2 mm
95.250 mm
71600 N
481000 N
EE649237 - 649311CD
649000
602.945 mm
787.4 mm
93.663 mm
158.750 mm
206.375 mm
677000 N
4550000 N
EE941205 - 941951XD
940000
304.8 mm
495.300 mm
74.613 mm
120.650 mm
162.245 mm
402000 N
2700000 N
93708 - 93127CD
93000
179.974 mm
317.500 mm
63.5 mm
111.125 mm
146.050 mm
190000 N
1270000 N
EE649239 - 649311CD
649000
607.720 mm
787.4 mm
93.663 mm
158.750 mm
206.375 mm
677000 N
4550000 N
EE971354 - 972103D
970000
342.900 mm
533.400 mm
76.200 mm
123.825 mm
174.625 mm
448000 N
3010000 N
EE224115 - 224205D
224000
292.100 mm
520.7 mm
107.950 mm
165.100 mm
228.600 mm
506000 N
3400000 N
EE655270 - 655346CD
655000
685.8 mm
876.300 mm
92.075 mm
152.400 mm
200.025 mm
714000 N
4790000 N
EE982051 - 982901CD
980000
520.7 mm
736.600 mm
81.758 mm
114.300 mm
186.502 mm
516000 N
3460000 N