This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.
C90 - Dynamic Radial Rating (90 million revolutions)4
N/A12100 lbf53800 N
C1 - Dynamic Radial Rating (1 million revolutions)5
N/A46600 lbf207000 N
C0 - Static Radial Rating
N/A54800 lbf244000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6
N/A6510 lbf28900 N
Factors
K - Factor7
N/A1.86
e - ISO Factor8
N/A0.31
Y - ISO Factor9
N/A1.91
G1 - Heat Generation Factor (Roller-Raceway)
N/A75.9
G2 - Heat Generation Factor (Rib-Roller End)
N/A16.2
Cg - Geometry Factor10
N/A0.0694
1 These maximum fillet radii will be cleared by the bearing corners.
2 These maximum fillet radii will be cleared by the bearing corners.
3 Negative value indicates effective center inside cone backface.
4 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
5 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
6 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
7 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
8 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
10 Geometry constant for Lubrication Life Adjustment Factor a3l.
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Are Timken wheel bearings made in the USA? Timken wheel bearings are made in the USA, Mexico, and a number of other countries. The bearings are all made to the same high worldwide standard which Timken is well known for.
Tapered Roller Bearings are designed to reduce friction and, in turn, reduce the heat that can cause bearing structures to fail. This bearing is used in many industrial applications and is optimal for those undergoing excess loads.
Bruising — Debris from other fatigued parts, inadequate sealing or poor maintenance. Abrasive wear — Fine abrasive particle contamination. Grooving — Large particle contamination imbedding into soft cage material. Etching — Rusting with pitting and corrosion from moisture/water exposure.
Single row tapered roller bearings must be used either with a second bearing (fig. 1) or as a matched pair (Matched tapered roller bearings). The bearings must be adjusted against each other until the requisite clearance or preload is obtained (Selecting preload).
Timken also retooled and expanded its U.S. facilities in Asheboro, N.C. and Tyger River, S.C. to serve its customers. This is in addition to existing wind-bearing production in Wuxi, China; Chennai, India; and Ploiesti, Romania.
The new name honors the company's century-long legacy as an industry-leading producer of strong, sustainable steel and reflects its vision to harness the enduring power of high-performance metals to make the world a better place.
Separable bearings such as tapered roller bearings may be checked by individually examining their rolling elements and the outer ring raceway. Large bearings cannot be rotated manually; however, the rolling elements, raceway surfaces, cages, and contact surface of the ribs should be carefully examined visually.
However, it is important to note that there are a few areas where tapered roller bearings have disadvantages. Tapered roller bearings do not tolerate dynamic misalignment well. Due to raceway and roller geometry, spherical roller bearings support dynamic misalignment much better.
Wheel bearings have an average lifespan of 136,000 to 160,000 km (approximately 85,000 to 100,000 miles). This is only a rule of thumb though, the actual lifespan of a wheel bearing depends on the quality of the wheel bearing and the operating conditions.
In 1895, Timken came up with an improvement that would reduce friction and improve the reliability and longevity of their carriages' axles. Three years later, he patented the tapered roller bearing. In 1899, Timken established The Timken Roller Bearing Axle Company in a corner of his factory.
Place a golf-ball sized amount of grease into your palm. 3. Using your opposite hand, push the large end of the bearing cone assembly into the grease, forcing grease between the rollers, cage and cone.
Tapered roller bearings are capable of carrying both radial and axial loads but largely used for applications where axial load component predominates. They are often used in pairs to take the thrust load in both directions.
Schatz Bearing Corporation is a Made in the USA manufacturer with numerous MS and OEM approvals for products that must meet exacting specifications. If you're looking for a supplier that has no minimum order quantities, short prototype lead-times, and world-class design capabilities, you've come to the right place.
National® is a registered trademark of Federal-Mogul Corp., licensed for use by The Timken Company. Redi-Sleeves®, Redi-Coat® and Redi-Seals® are registered trademarks of Federal-Mogul Corp. Zero Duplication™ and V-Seals™ are trademarks of Federal-Mogul Corp.
Twenty-eight of SKF's 140 global manufacturing sites are located in the U.S., including facilities for the production of seals, lubrication systems and rolling bearings.
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