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)
HM256849 - HM256810D
HM256800
300.038 mm
422.275 mm
82.550 mm
136.525 mm
174.625 mm
336000 N
2260000 N
EE241701 - 242376D
240000
431.800 mm
603.25 mm
73.025 mm
98.425 mm
153.289 mm
292000 N
1960000 N
EE737173 - 737261CD
737000
441.325 mm
660.400 mm
85.725 mm
138.113 mm
195.262 mm
457000 N
3070000 N
EE243192 - 243251CD
243000
489.026 mm
634.873 mm
80.963 mm
142.875 mm
177.800 mm
380000 N
2560000 N
EE737181 - 737261CD
737000
457.200 mm
660.400 mm
85.725 mm
138.113 mm
195.262 mm
457000 N
3070000 N
EE291201 - 291753CD
290000
304.8 mm
444.5 mm
61.913 mm
176.200 mm
223.825 mm
230000 N
1540000 N
EE737181 - 737261D
737000
457.200 mm
660.400 mm
85.725 mm
138.113 mm
195.262 mm
457000 N
3070000 N
EE295102 - 295192CD
295000
260.350 mm
488.950 mm
120.650 mm
196.850 mm
254.000 mm
628000 N
4220000 N
EE743240 - 743321CD
743000
609.600 mm
812.800 mm
82.550 mm
146.050 mm
190.500 mm
538000 N
3610000 N
EE295110 - 295192CD
295000
279.4 mm
488.950 mm
120.650 mm
196.850 mm
254.000 mm
628000 N
4220000 N
EE749260 - 749335CD
749000
660.400 mm
854.923 mm
85.468 mm
135.900 mm
186.329 mm
581000 N
3900000 N
EE328167 - 328268D
328000
425.450 mm
685.698 mm
142.799 mm
234.950 mm
311.150 mm
812000 N
5450000 N
EE822100 - 822176CD
822000
254 mm
444.5 mm
73.025 mm
114.300 mm
165.100 mm
305000 N
2050000 N
M667935 - M667911D
M667900
387.248 mm
546.1 mm
87.313 mm
147.638 mm
185.735 mm
484000 N
3250000 N
L163149NW - L163110CD
L163100
355.6 mm
444.5 mm
68.263 mm
111.125 mm
136.525 mm
190000 N
1280000 N
483 - 472D
475
63.500 mm
120 mm
29.007 mm
53.975 mm
65.090 mm
37200 N
250000 N
M667947 - M667911DC
M667900
409.575 mm
546.1 mm
87.313 mm
147.638 mm
185.735 mm
484000 N
3250000 N
NA456SW - 452D
455
50.8 mm
107.95 mm
37.308 mm
53.975 mm
74.615 mm
35200 N
CAD
484 - 472D
475
70 mm
120 mm
29.007 mm
53.975 mm
65.090 mm
37200 N
250000 N
M667935 - M667911DC
M667900
387.248 mm
546.1 mm
87.313 mm
147.638 mm
185.735 mm
484000 N
3250000 N