27687/27620B Timken Flanged Tapered Roller Bearing 3.25" X 4.9375" X 1"
Part Number: 27687/27620B
Assembly Number: 27687-99402
Manufacturer: Timken
Bearing Type: Flanged (TSF) Type Tapered Roller Bearing
Basic Dimension(s): 3.25X4.9375X0.4062
Part Number: 27687/27620B
Bearing Dimension(s):
Internal Diameter (d) = 3.25"
External Diameter (D) = 4.9375"
Flange to Backface Width (T₁) = 0.4062"
Cup Width (C) = 0.7813"
Width Through Bore (B) = 1"
Outer Ring Flange Diameter (D₁) =5.1211"
Flange Width (C₂) = 0.1875"
Effective Centre (a) = 0.5mm ⁽⁴⁾
Shaft Dimension(s):
Max. Shaft Fillet Radius (R) = 3.5mm ⁽⁵⁾
Backing Shoulder Diameter (dₐ) = 89mm
Backing Shoulder Diameter (dₑ) = 96mm
Housing Dimension(s):
Backing Shoulder Diameter (Dₐ) = 123mm
Load Rating(s):
Dynamic (C₁) = 117000N ⁽¹⁾
Factors (e) = 0.42 ⁽²⁾
Factors (Y) = 1.44 ⁽²⁾
Dynamic (C₉₀) = 30400N ⁽³⁾
Dynamic (Cₐ₉₀) = 21600N ⁽³⁾
Factors (K) = 1.4 ⁽²⁾
Static (C₀) = 178000N
Remarks:
⁽¹⁾ Based on 1 x 10⁶ revolutions L₁₀ life, for the ISO life-calculation method.
⁽²⁾ Consult your Timken engineer for instructions on use or review the Timken Engineering Manual on timken.com/catalogs.
⁽³⁾ Based on 90 x 10⁶ revolutions L₁₀ life, for The Timken Company life-calculation method. C₉₀ and Cₐ₉₀ are radial and thrust values.
⁽⁴⁾ Negative value indicates effective center inside cone Metric.
⁽⁵⁾ These maximum fillet radii will be cleared by the bearing corners
TSF Type Timken Tapered Roller Bearings are precision-engineered components designed by The Timken Company, a renowned leader in the bearing industry. The "TSF" designation stands for "single-row with flanged cup," indicating a tapered roller bearing configuration with a flanged outer ring. These bearings are designed to provide reliable radial and axial load-carrying capabilities, coupled with the convenience of a flanged cup for simplified mounting and positioning.
The unique feature of the flanged cup in TSF Type Timken Tapered Roller Bearings serves a dual purpose. First, it simplifies the installation process by providing a fixed reference point for axial positioning. This design eliminates the need for separate housing or support structures, making it particularly advantageous in applications where space is limited or where precise alignment is crucial. Second, the flange adds an extra level of rigidity to the bearing assembly, enhancing its resistance to misalignment and improving overall performance.
Manufactured with Timken's commitment to precision and quality, TSF Type Tapered Roller Bearings are constructed from high-quality materials and undergo advanced heat treatment processes to ensure durability and reliability. The tapered roller design enables efficient distribution of radial and axial loads, reducing friction and contributing to the bearings' long service life.
These bearings are suitable for various applications across industries such as automotive, agriculture, and construction equipment. Common applications include gearboxes, belt pulleys, and other power transmission components where the combination of a tapered roller bearing with a flanged cup is advantageous.
Engineers and manufacturers often choose TSF Type Timken Tapered Roller Bearings for their dependable performance, ease of installation, and versatility in addressing axial positioning challenges. With Timken's reputation for innovation and quality, TSF Type Tapered Roller Bearings are trusted components that contribute to the efficiency and longevity of diverse mechanical systems.
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