B1006E Tapered Roller Bearings for Axle drive pinions

Product catalog summary

Introduction
Tapered roller bearings are crucial components in automobile axles, designed to handle complex stresses from acceleration, deceleration, and cornering forces. JTEKT has developed advanced bearings to support drive pinions, focusing on reducing friction loss and increasing capacity.

Development Timeline and Trends
The development of tapered roller bearings for automobile drivelines has evolved significantly from 1960 to 2020. Key trends include longer service life with contaminated oil, lower torque, and compact, lightweight designs. Notable innovations include the LFT-I, LFT-II, and LFT-III bearings, which offer significant torque reductions.

Technological Innovations
JTEKT has introduced several technologies to enhance bearing performance, such as special processing of inner ring rib surfaces, near net shape cold-forging, and high-concentration carburizing technology. These innovations contribute to longer service life and improved reliability.

Torque Reduction Technologies
To reduce rotational torque, JTEKT focuses on minimizing friction loss from sliding, rolling, and lubricant churning. The LFT-III model offers up to 80% torque reduction compared to standard tapered roller bearings (TRBs).

Service Life and Durability
KE bearings demonstrate a tenfold increase in service life with contaminated oil compared to standard bearings. This is achieved through increased surface hardness and optimized retained austenite.

Evaluation and Testing
JTEKT conducts comprehensive evaluations using CAE analysis and real-world simulations to ensure product reliability. The Iga Proving Ground allows for testing under various road and weather conditions globally.

Global Technical Support
JTEKT provides technical support through multiple global bases, ensuring quick response to customer needs. The company emphasizes delivering high-quality products that enhance vehicle performance and safety.

Recommended Bearing Models
A list of recommended bearing models is provided, detailing their dimensions, load ratings, and other specifications. These models are designed to meet specific application requirements for axle drive pinions.

Catalog excerpts

Tapered Roller Bearings for axle drive pinions

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Tapered roller bearings for axle drive pinions Drive pinion bearings support the drive pinion gear shaft of the hypoid gear, which facilitates a 90° directional change of the driving force transmitted from the propeller shaft. This bearing is used in pairs to simultaneously ensure smooth rotation and the rigidity of gear meshing points. Compact & Lightweight, Low-torque, High-capacity & High-durability. JTEKT’s TRBs support enhancement of vehicle’s environmental performance. Drive pinion gear In automobile axles, various stresses are caused by acceleration, deceleration, and cornering forces...

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B1006E Tapered Roller Bearings for Axle drive pinions-3

Tapered Roller Bearings Tapered Roller Bearings Torque reduction technologies LFT To reduce bearing rotational torque by focusing on friction loss caused by sliding, rolling and lubricant churning. Signiﬁcant extension of service life with contaminated oil by adopting JTEKT’s own heat treatment technologies. 1． Increase bearing surface hardness Effective to surface originated ﬂaking which occurs when lubricated by contaminated oil 2． Optimize the amount of retained austenite Flaking Initiated from Surface Flaking Initated From Sub - Surface ② Optimized raceway crowning proﬁle Rolling Element...

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B1006E Tapered Roller Bearings for Axle drive pinions-4

Example Technology Review Example Evaluation CAE analysis result is veriﬁed by using an actual ﬁnal reduction gear unit with an actual drive pinion. ■CAE analysis JTEKT’s design and development are conducted utilizing the latest equipment in an advanced CAE environment. As JTEKT developed its own high-precision tapered roller bearing’s torque calculation formula based on accumulated data, research and analysis, rotational torque can be easily obtained and used for examination. JTEKT considers the rigidity of whole axle system, which supports the axle, bearing service life, contact stress, etc....

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B1006E Tapered Roller Bearings for Axle drive pinions-5

Recommended Series Bearing Numbers Global Technical Support (Bearing Development Bases) Technical centers located around the world ensure quick response and technical support for customers' needs. Please select from the recommended bearing numbers when considering axle drive pinion bearings. Iga Proving Ground Enables Testing / Evaluations Simulating Roads Worldwide 08

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B1006E Tapered Roller Bearings for Axle drive pinions-6

JTEKT OFFICES KOYO CANADA INC. 5324 South Service Road, Burlington, Ontario L7L 5H5, CANADA TEL : 1-905-681-1121 FAX : 1-905-681-1392 JTEKT NORTH AMERICA CORPORATION -Main Office-47771 Halyard Drive, Plymouth, MI 48170, U.S.A. TEL : 1-734-454-1500 FAX : 1-734-454-7059 -Cleveland Office-29570 Clemens Road, P.O.Box 45028, Westlake, OH 44145, U.S.A. TEL : 1-440-835-1000 FAX : 1-440-835-9347 KOYO MEXICANA, S.A. DE C.V. Av. Insurgentes Sur 2376-505, Col. Chimalistac, Del. Alvaro Obregdn, C.P. 01070, Mexico, D.F. TEL : 52-55-5207-3860 FAX : 52-55-5207-3873 KOYO LATIN AMERICA, S.A. Edificio Banco del...

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