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)
EE275108 - 275161D
275000
273.050 mm
406.400 mm
69.850 mm
107.950 mm
155.572 mm
262000 N
1760000 N
26118 - 26282D
26000
29.987 mm
71.438 mm
18.923 mm
36.513 mm
42.863 mm
18100 N
121000 N
EE275100 - 275161D
275000
254 mm
406.400 mm
69.850 mm
107.950 mm
155.572 mm
262000 N
1760000 N
26112 - 26282D
26000
28.575 mm
71.438 mm
18.923 mm
36.513 mm
42.863 mm
18100 N
121000 N
EE275105 - 275161D
275000
266.7 mm
406.400 mm
69.850 mm
107.950 mm
155.572 mm
262000 N
1760000 N
26112 - 26284D
26000
28.575 mm
71.973 mm
18.923 mm
36.513 mm
42.761 mm
18100 N
121000 N
EE275105 - 275161DC
275000
266.7 mm
406.400 mm
69.850 mm
107.950 mm
155.572 mm
262000 N
1760000 N
25581 - 25520DC
25500
44.450 mm
82.931 mm
25.400 mm
47.625 mm
57.150 mm
23500 N
158000 N
26093 - 26284D
26000
23.813 mm
71.973 mm
18.923 mm
36.513 mm
42.761 mm
15200 N
102000 N
EE275100 - 275161DC
275000
254 mm
406.400 mm
69.850 mm
107.950 mm
155.572 mm
262000 N
1760000 N
25580 - 25520DC
25500
44.450 mm
82.931 mm
25.400 mm
47.625 mm
57.150 mm
23500 N
158000 N
26118 - 26284D
26000
29.987 mm
71.973 mm
18.923 mm
36.513 mm
42.761 mm
18100 N
121000 N
EE275095 - 275161DC
275000
241.300 mm
406.400 mm
69.850 mm
107.950 mm
155.572 mm
262000 N
1760000 N
25577 - 25520DC
25500
42.875 mm
82.931 mm
25.400 mm
47.625 mm
57.150 mm
23500 N
158000 N
26100 - 26284D
26000
25.400 mm
71.973 mm
18.923 mm
36.513 mm
42.761 mm
15200 N
102000 N
EE275108 - 275161DC
275000
273.050 mm
406.400 mm
69.850 mm
107.950 mm
155.572 mm
262000 N
1760000 N
25576 - 25520DC
25500
42.863 mm
82.931 mm
25.400 mm
47.625 mm
57.150 mm
23500 N
158000 N
26126 - 26284D
26000
32.004 mm
71.973 mm
18.923 mm
36.513 mm
42.761 mm
15200 N
102000 N
27687 - 27620DA
27600
82.550 mm
125.413 mm
25.400 mm
44.450 mm
55.557 mm
30400 N
204000 N
25590 - 25520DC
25500
45.618 mm
82.931 mm
25.400 mm
47.625 mm
57.150 mm
23500 N
158000 N