**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.
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) |
---|---|---|---|---|---|---|---|---|
285000 |
406.400 mm |
574.675 mm |
67.866 mm |
106.363 mm |
157.160 mm |
287000 N |
1930000 N |
|
28000 |
40 mm |
80.035 mm |
20.940 mm |
34.925 mm |
46.040 mm |
19500 N |
131000 N |
|
28900 |
59.977 mm |
100 mm |
25.400 mm |
44.450 mm |
55.560 mm |
27500 N |
185000 N |
|
28000 |
38.1 mm |
80.035 mm |
20.940 mm |
34.925 mm |
46.040 mm |
19500 N |
131000 N |
|
28900 |
60.325 mm |
100 mm |
25.400 mm |
44.450 mm |
55.560 mm |
27500 N |
185000 N |
|
28000 |
39.980 mm |
80.035 mm |
19.649 mm |
34.925 mm |
43.459 mm |
19500 N |
131000 N |
|
28900 |
61.976 mm |
100 mm |
24.608 mm |
44.450 mm |
53.975 mm |
27500 N |
185000 N |
|
27600 |
73.025 mm |
125.413 mm |
25.400 mm |
44.450 mm |
55.557 mm |
30400 N |
204000 N |
|
28000 |
38.1 mm |
80.035 mm |
20.940 mm |
34.925 mm |
46.040 mm |
16500 N |
111000 N |
|
28900 |
62.738 mm |
100 mm |
25.400 mm |
44.450 mm |
55.560 mm |
27500 N |
185000 N |
|
27600 |
83.345 mm |
125.413 mm |
25.400 mm |
44.450 mm |
55.557 mm |
30400 N |
204000 N |
|
28000 |
34.925 mm |
80.035 mm |
20.940 mm |
34.925 mm |
46.040 mm |
19500 N |
131000 N |
|
28900 |
60.325 mm |
100 mm |
25.400 mm |
44.450 mm |
55.560 mm |
27500 N |
185000 N |
|
26000 |
25.400 mm |
71.438 mm |
18.923 mm |
36.513 mm |
42.863 mm |
15200 N |
102000 N |
|
275000 |
273.050 mm |
393.7 mm |
69.850 mm |
109.538 mm |
157.160 mm |
262000 N |
1760000 N |
|
26000 |
23.813 mm |
71.438 mm |
18.923 mm |
36.513 mm |
42.863 mm |
15200 N |
102000 N |
|
275000 |
241.300 mm |
406.400 mm |
69.850 mm |
107.950 mm |
155.572 mm |
262000 N |
1760000 N |
|
26000 |
31.999 mm |
71.438 mm |
18.923 mm |
36.513 mm |
42.863 mm |
15200 N |
102000 N |
|
275000 |
273.050 mm |
406.400 mm |
69.850 mm |
107.950 mm |
155.572 mm |
262000 N |
1760000 N |
|
26000 |
29.987 mm |
71.438 mm |
18.923 mm |
36.513 mm |
42.863 mm |
18100 N |
121000 N |