Tapered Roller Bearings – Single Flanged Cups – Imperial

Tapered Roller Bearings Product Introduction

**TIMKEN Tapered Roller Bearings: Single Cups & Flanged Cups for Demanding Industrial Applications**

For over a century, TIMKEN has been a global leader in engineered bearings and mechanical power transmission solutions, delivering unmatched reliability and performance in the most demanding applications. Among its flagship products, **TIMKEN Tapered Roller Bearings** stand out for their precision, durability, and ability to handle combined radial and thrust loads. This introduction focuses on two critical variants: **Single Cups (0 Series)** and **Single Flanged Cups (Imperial 261 Series)**, highlighting their technical features, performance advantages, and industrial applications.

### **Technical Features & Design Excellence**
TIMKEN’s **Single Cups (0 Series)** and **Single Flanged Cups (Imperial 261 Series)** are designed for high-load, high-speed, and long-service applications. These bearings feature:

– **Optimized Tapered Geometry** – Precision-engineered rollers and raceways ensure even load distribution, reducing friction and wear.
– **Robust Construction** – Manufactured from premium alloy steel, these bearings undergo advanced heat treatment for superior hardness and fatigue resistance.
– **Flanged Cup Design (261 Series)** – The integrated flange provides secure axial location, simplifying housing design and preventing misalignment in dynamic applications.
– **Interchangeability & Standardization** – Conforming to imperial dimensions, these bearings are compatible with industry-standard housings, ensuring easy replacement and integration.

### **Performance Advantages**
TIMKEN’s tapered roller bearings excel in environments where shock loads, heavy radial/axial forces, and high rotational speeds are present. Key benefits include:

– **Extended Service Life** – Advanced metallurgy and precision grinding minimize wear, reducing maintenance frequency.
– **Enhanced Load Capacity** – The tapered design efficiently manages both radial and thrust loads, making them ideal for combined load scenarios.
– **Reduced Friction & Heat Generation** – Optimized roller profiles and surface finishes enhance lubrication efficiency, lowering operating temperatures.
– **Versatility in Mounting** – Single cups allow for flexible configurations, while flanged cups provide added stability in applications requiring precise axial positioning.

### **Typical Applications**
These bearings are widely used across industries where reliability and precision are critical:

– **Industrial Machinery** – Conveyors, gearboxes, pumps, and mining equipment benefit from their high load capacity and durability.
– **Automotive Systems** – Wheel hubs, transmissions, and differentials rely on tapered roller bearings for smooth power transmission under varying loads.
– **Precision Equipment** – Machine tool spindles and agricultural machinery leverage their ability to maintain accuracy under stress.

### **Conclusion**
TIMKEN’s **Single Cups (0 Series)** and **Single Flanged Cups (Imperial 261 Series)** represent the pinnacle of tapered roller bearing technology, offering engineers a trusted solution for harsh operating conditions. Whether in heavy industry, automotive systems, or precision machinery, these bearings deliver consistent performance, reduced downtime, and long-term cost savings—reinforcing TIMKEN’s legacy as a leader in mechanical power transmission innovation.

For applications demanding strength, precision, and reliability, TIMKEN’s tapered roller bearings remain the industry benchmark.

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Part Number Series D - Cup Outer Diameter C - Cup Widthh
47822-B
47800
146.050 mm
26.195 mm
432AB
435
92.075 mm
22.225 mm
47825-B
47800
142.875 mm
26.195 mm
432-B
435
95.250 mm
22.225 mm
48220-B
48200
182.563 mm
33.338 mm
43312-B
43000
79.375 mm
17.463 mm
48320-B
48300
190.5 mm
33.338 mm
44348-B
44000
88.501 mm
17.463 mm
48620-B
48600
200.025 mm
34.13 mm
45220-B
45200
104.775 mm
23.813 mm
48750-B
48000
190.5 mm
25.4 mm
452-B
455
107.95 mm
28.575 mm
49368-B
49000
93.663 mm
25.4 mm
28622-B
28600
97.630 mm
19.446 mm
33820-B
33800
93.264 mm
22.225 mm
3924-BW
3900
115.895 mm
30.163 mm
28921-B
28900
100 mm
19.845 mm
3420-B
3400
79.375 mm
23.813 mm
291750-B
290000
444.5 mm
39.688 mm
34478-B
34000
121.442 mm
17.463 mm
2924-B
2900
85.001 mm
20.638 mm
34481-B
34000
122.238 mm
21.430 mm
29520-B
29500
107.95 mm
19.05 mm
3525-B
3500
87.313 mm
23.813 mm