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)
482 - 472D
475
69.850 mm
120 mm
29.007 mm
53.975 mm
65.090 mm
37200 N
250000 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
NA483SW - 472D
475
70 mm
120 mm
37.308 mm
53.975 mm
74.615 mm
37200 N
CAD
M667944 - M667911DC
M667900
406.400 mm
546.1 mm
87.313 mm
147.638 mm
185.735 mm
484000 N
3250000 N
NA24776SW - 24720D
24700
38.1 mm
76.2 mm
29.367 mm
39.688 mm
58.735 mm
19600 N
CAD
M667948 - M667911DC
M667900
409.575 mm
546.1 mm
87.313 mm
147.638 mm
185.735 mm
438000 N
2940000 N
15125 - 15251D
15000
31.750 mm
63.500 mm
20.638 mm
36.513 mm
46.038 mm
15500 N
104000 N
M241547A - M241513D
M241500
203.2 mm
301.625 mm
57.945 mm
140.005 mm
125.453 mm
165000 N
1110000 N
M252349HWS - M252310CD
M252300
269.875 mm
381.000 mm
74.613 mm
123.825 mm
158.747 mm
326000 N
2190000 N
M276449 - M276410D
M276400
536.575 mm
761.873 mm
146.050 mm
247.650 mm
311.150 mm
1040000 N
6980000 N
M241547C - M241513D
M241500
203.2 mm
301.625 mm
57.945 mm
140.005 mm
125.453 mm
178000 N
1200000 N
M252349 - M252310CD
M252300
269.875 mm
381.000 mm
74.613 mm
123.825 mm
158.747 mm
298000 N
2000000 N
M276449 - M276410DC
M276400
536.575 mm
761.873 mm
146.050 mm
247.650 mm
311.150 mm
1040000 N
6980000 N
M241545 - M241513XD
M241500
200.812 mm
301.625 mm
61.913 mm
140.005 mm
125.453 mm
145000 N
975000 N