Tapered Roller Bearings – TSF (Tapered Single with Flange) Imperial

Tapered Roller Bearings Product Introduction

**TIMKEN TSF Tapered Roller Bearings: Precision, Durability, and Performance for Demanding Applications**

TIMKEN Tapered Roller Bearings are engineered to deliver unmatched reliability and performance in some of the most demanding industrial, automotive, and precision equipment applications. Among TIMKEN’s extensive bearing portfolio, the **TSF (Tapered Single with Flange) series** stands out for its robust design, high load-carrying capacity, and ease of installation. Available in both metric and imperial sizes, these bearings are optimized to handle combined radial and thrust loads efficiently, making them ideal for applications where precision, durability, and long service life are critical.

### **Technical Features & Design Advantages**
The **TSF tapered roller bearings** incorporate a single-row, flanged cup design that simplifies mounting and ensures precise alignment in housings. Key features include:

– **Flanged Outer Ring (Cup):** The integrated flange provides axial location, eliminating the need for complex housing shoulders or separate clamping mechanisms. This design enhances assembly accuracy and reduces installation time.
– **Premium Steel Construction:** Manufactured from high-quality, clean steel, TIMKEN TSF bearings undergo advanced heat treatment processes to enhance fatigue resistance and durability under heavy loads.
– **Optimized Roller & Cage Design:** Precision-ground tapered rollers and a sturdy cage distribute loads evenly, reducing friction and wear while maintaining smooth operation at high speeds.
– **Sealing & Lubrication Options:** Configurable with various sealing solutions (such as contact or non-contact seals) and lubrication methods to suit specific environmental conditions—whether in contaminated industrial settings or high-speed automotive systems.

### **Performance Benefits**
TIMKEN TSF bearings are built to excel in applications requiring high rigidity and resistance to misalignment. Their advantages include:

– **Superior Load Capacity:** The tapered geometry allows the bearings to support significant radial and axial loads simultaneously, making them ideal for gearboxes, wheel hubs, and heavy machinery.
– **Extended Service Life:** Advanced metallurgy and precision manufacturing reduce metal-to-metal contact, minimizing wear and extending operational life even in harsh conditions.
– **Reduced Maintenance Needs:** The robust design and high-quality materials decrease the frequency of re-lubrication and replacements, lowering total cost of ownership.

### **Typical Applications**
TIMKEN TSF tapered roller bearings are widely used across industries, including:

– **Industrial Machinery:** Conveyors, crushers, and mining equipment where shock loads and misalignment are common.
– **Automotive Systems:** Wheel ends, transmissions, and differentials requiring high precision and load management.
– **Precision Equipment:** Agricultural machinery, construction vehicles, and material handling systems that demand reliability under variable stresses.

Whether in metric or imperial sizes (such as the **TSF Imperial 658 series**), TIMKEN’s TSF tapered roller bearings provide a dependable solution for engineers seeking performance-driven components. By combining innovative design with decades of bearing expertise, TIMKEN ensures these bearings meet the rigorous demands of modern industrial and automotive applications—delivering efficiency, longevity, and reduced downtime.

For industries that cannot afford compromise, TIMKEN TSF bearings represent the gold standard in power transmission reliability.

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Part Number Series d - Bore D - Cup Outer Diameter B - Cone Width C - Cup Width T1 - Bearing Width to Flange C1 - Dynamic Radial Rating (1 million revolutions) C0 - Static Radial Rating
27687 - 27620-B
27600
82.550 mm
125.413 mm
25.400 mm
19.845 mm
10.317 mm
117000 N
178000 N
2581 - 2523-B
2500
33.338 mm
69.850 mm
25.357 mm
19.050 mm
8.725 mm
83700 N
94400 N
2691 - 2631-B
2600
29.367 mm
66.421 mm
25.433 mm
19.050 mm
8.725 mm
76600 N
81700 N
27690 - 27620-B
27600
83.345 mm
125.413 mm
25.400 mm
19.845 mm
10.317 mm
117000 N
178000 N
2585 - 2523-B
2500
33.338 mm
69.850 mm
25.357 mm
19.050 mm
8.733 mm
83700 N
94400 N
2687 - 2631-B
2600
25.400 mm
66.421 mm
25.433 mm
19.050 mm
8.725 mm
76600 N
81700 N
28137 - 28315-B
28000
34.925 mm
80 mm
20.940 mm
15.875 mm
9.101 mm
75200 N
68900 N
2582 - 2523-B
2500
31.750 mm
69.850 mm
25.357 mm
19.050 mm
8.733 mm
83700 N
94400 N
2688 - 2631-B
2600
26.988 mm
66.421 mm
25.433 mm
19.050 mm
8.725 mm
76600 N
81700 N
28150 - 28315-B
28000
38.1 mm
80 mm
20.940 mm
15.875 mm
9.101 mm
75200 N
68900 N
25576 - 25521-B
25500
42.863 mm
83.058 mm
25.400 mm
19.050 mm
8.733 mm
90500 N
111000 N
2689 - 2631-B
2600
28.575 mm
66.421 mm
25.433 mm
19.050 mm
8.725 mm
76600 N
81700 N
28151 - 28315-B
28000
38.1 mm
80 mm
20.940 mm
15.875 mm
9.101 mm
63500 N
68900 N
25584 - 25521-B
25500
44.983 mm
83.058 mm
25.400 mm
19.050 mm
8.733 mm
90500 N
111000 N
2690 - 2631-B
2600
29.367 mm
66.421 mm
25.433 mm
19.050 mm
8.725 mm
76600 N
81700 N
25580 - 25521-B
25500
44.450 mm
83.058 mm
25.400 mm
19.050 mm
8.733 mm
90500 N
111000 N
26884 - 26822-B
26800
42.875 mm
79.375 mm
25.400 mm
19.050 mm
8.732 mm
91100 N
110000 N
25590 - 25521-B
25500
45.618 mm
83.058 mm
25.400 mm
19.050 mm
8.733 mm
90500 N
111000 N
26882 - 26822-B
26800
41.275 mm
79.375 mm
25.400 mm
19.050 mm
8.732 mm
91100 N
110000 N
26131 - 26283-B
26000
33.338 mm
71.999 mm
18.923 mm
15.875 mm
7.087 mm
69600 N
60100 N