• Steel mill bearings • Bearings and Related Products for Continuous Casting Machines JTEKT CORPORATION

Bearings and Related Products for Continuous Casting Machines Introduction In continuous casting machines, roll support bearings are used under heavy loads and at extremely low speed. In addition, the operating conditions are severe, resulting in exposure to splashing water and scales. Accordingly, roll support bearings may be failed in an extremely short period of time, typically due to wear and cracking. To solve these problems, JTEKT has developed a series of products optimized to support the rolls of continuous casting machines, including bearings, oil seals, HSC (Half Split Cylindrical Roller)...

Bearings and Related Products for Continuous Casting Machines 1. Failure mechanism of Bearing In continuous casting machines, rolls are loaded under excessively heavy loads and may be bent considerably. Accordingly, to support the rolls, spherical roller bearings, which have a self-aligning, are commonly used. JTEKT has performed a variety of verification tests and analyses concerning this application, and concluded that differential slip occurs in the spherical roller bearings on the rolls of the continuous casting machines when excessively heavy loads at extremely low speed are imposed on the...

Bearings and Related Products for Continuous Casting Machines 2. High performance Products and Their Features (1) Roll support bearings Compared with spherical roller bearings, cylindrical roller bearings do not produce differential slip on the contact surface between each roller and bearing raceway under the excessively heavy loads, delaying the development of wear and thus extending bearing service life. ! SC bearing at free side To accommodate thermal roll contraction and expansion, the inner ring of this bearing are designed to move smoothly in the axial direction. Self aligning ring Bearings...

Bearings and Related Products for Continuous Casting Machines (2) HSC bearing units with half-round outer ring This unit is designed to support the rolls of continuous casting machines at their middle position under heavy loads, and has high cooling efficiency. This unit has unique structure, with a half-round outer ring placed on the loaded side only. This special half-round outer ring and compact seal design realizes a 15% increase in static load rating over that of conventional products. The outside diameter surface of the outer ring is finished spherically, providing a self aligning to the...

Bearings and Related Products for Continuous Casting Machines Bearings and Related Products for Continuous Casting Machines 2. High performance Products and Their Features (3) Oil seals for roll support housings (4) Oil/Air lubrication system This oil seal is applied for non grease evacuated type (Called Seal Out Type) housing. The standard material of seal rubber is H-NBR, which well resists to high temperature and stable under steam. This system supplies lubrication oil into the housing by means of compressed air. Therefore, the internal pressure of the housing is essentially high, preventing...

GLOBAL NETWORK BEARING BUSINESS OPERATIONS JTEKT CORPORATION NAGOYA HEAD OFFICE No.1-1, Asahimachi, Kariya, Aichi 448-8652, JAPAN (move to Midland Square at Meieki 4-chome, Nakamura-ku, Nagoya, is planned for Dec. 2006) TEL : 81-566-25-5111 FAX : 81-566-25-5470 JTEKT KOREA CO., LTD. Inwoo Building 6F, 539-11, Shinsa-Dong, Kangnam-Ku, Seoul, KOREA TEL : 82-2-549-7922 FAX : 82-2-549-7923 JTEKT CORPORATION BEIJING LIAISON OFFICE JTEKT CORPORATION OSAKA HEAD OFFICE Sales & Marketing Headquarters No.5-8, Minamisemba 3-chome, Chuo-ku, Osaka 542-8502, JAPAN TEL : 81-6-6245-6087 FAX : 81-6-6244-9007...

Value & Technology This catalog has been printed on paper of 100% waste paper pulp using environmentally friendly soy ink.