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Cobalt system conical roller bearing with high temperature-resistant fixing frame

A tapered roller bearing and fixing frame technology is applied in the field of cobalt-based steel tapered roller bearings, which can solve the problem that the high temperature resistance conditions of the tapered roller bearings cannot be achieved, and the motion resistance of rolling elements in the non-load-bearing area is increased to 500-600 ℃ and other problems, to achieve the effect of good organization uniformity and carbide dispersion, reducing friction torque and increasing service life

Inactive Publication Date: 2016-03-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The content of the present invention is to solve the problem that in the prior art, the contact line between the pocket of the tapered roller bearing cage and the roller is longer, which causes the movement resistance of the rolling elements in the non-loading area to increase under high temperature and heavy load conditions, resulting in a large Friction torque, tapered roller bearing high temperature conditions can not meet the requirements from the conventional 250 ℃ to 500 ~ 600 ℃, and then provide a cobalt steel tapered roller bearing with high temperature resistant fixing frame

Method used

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  • Cobalt system conical roller bearing with high temperature-resistant fixing frame
  • Cobalt system conical roller bearing with high temperature-resistant fixing frame
  • Cobalt system conical roller bearing with high temperature-resistant fixing frame

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specific Embodiment approach 1

[0016] Specific implementation mode one: combine Figure 1-Figure 2 Describe this embodiment, a cobalt-based steel tapered roller bearing with a high-temperature-resistant fixing frame described in this embodiment, which includes a bearing outer ring 1, a bearing inner ring 2, a bearing fixing frame 4 and a plurality of movable bodies 3, The bearing outer ring 1, the bearing inner ring 2 and the bearing fixing frame 4 are all tapered sleeves, and the side walls of the bearing fixing frame 4 are uniformly processed with a plurality of movable body mounting holes 5, and the two opposite movable body mounting holes 5 Two arc surfaces 6 are processed on the side wall, and a movable body 3 is correspondingly installed in each movable body installation hole, the bearing fixing frame 4 is set on the bearing inner ring 2, and the bearing outer ring 1 is set on the bearing fixing frame 4 , and a plurality of movable bodies 3 are arranged between the bearing outer ring 1 and the bearing...

specific Embodiment approach 2

[0017] Specific implementation mode two: combination Figure 1-Figure 2 Describe this embodiment, a cobalt-based steel tapered roller bearing with a high-temperature-resistant fixing frame described in this embodiment, the bearing outer ring 1 is a bearing outer ring made of M42 cobalt-based steel material, and the bearing inner ring 2 is the inner ring of the bearing made of M42 cobalt-based steel material, the movable body 3 is the movable body made of M42 cobalt-based steel material, and the bearing fixing frame 4 is a bearing fixing frame made of 0Cr18Ni9Ti stainless steel material. Embodiment 1 is the same.

specific Embodiment approach 3

[0018] Specific implementation mode three: combination figure 1 Describe this embodiment, a cobalt-based steel tapered roller bearing with a high-temperature-resistant fixing frame described in this embodiment, the mass percentage of each element in the M42 cobalt-based steel material is as follows: C: 1% to 1.15%, Cr: 3.5% to 4.5%, V: 0.95% to 1.35%, W: 1.15% to 1.85%, Mo: 9.0% to 10.0%, Co7.5% to 8.5%, and the balance Fe, others are the same as the specific embodiment one same.

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Abstract

The invention relates to a high temperature-resistant conical roller bearing, in particular to a cobalt system conical roller bearing with a high temperature-resistant fixing frame, and aims to solve the problem in the prior art that since a contact line between a retainer pocket hole of a conical roller bearing and a roller is longer, resistance to motion is increased when a non-bearing zone rolling body is in a high temperature heavy load working condition, larger friction torque is generated, and the high temperature resistant condition of the conical roller bearing cannot be improved to meet the requirement of 500-600 DEG C from around conventional 250 DEG C. The cobalt system conical roller bearing with the high temperature-resistant fixing frame comprises a bearing outer ring, a bearing inner ring, a bearing fixing frame and multiple moving bodies; the bearing outer ring, the bearing inner ring and the bearing fixing frame are all conical sleeves; multiple moving body mounting holes are uniformly formed and machined in the side wall of the bearing fixing frame; two arc surfaces are machined on two opposite side walls of the moving body mounting holes; one moving body is correspondingly arranged in each moving body mounting hole; the bearing fixing frame sleeves the bearing inner ring; the bearing outer ring sleeves the bearing fixing frame. The invention is applied to the field of bearings.

Description

technical field [0001] The invention relates to a high temperature resistant tapered roller bearing, in particular to a cobalt steel tapered roller bearing with a high temperature resistant fixing frame. Background technique [0002] With the expansion of aerospace missions, the temperature resistance requirements for bearings used in space vehicles have gradually increased, and the limit operating temperature has increased from about 250°C to 500-600°C or even higher. Under this high temperature and heavy load condition, the frictional moment of the tapered roller bearing increases sharply. Under the traction of aero-engine demand, bearing materials have experienced the development track of low-alloy steel-high-alloy steel-ceramic materials. [0003] Low alloy steel is represented by GCr15 (US brand 52100). GCr15 requires long-term high-temperature dimensional stabilization treatment, and the long-term working temperature is below 200°C. It is mainly used for civilian bea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/56F16C33/62F16C33/34
CPCF16C33/56F16C33/366F16C33/62
Inventor 古乐张弛张传伟唐光泽郑德志王黎钦
Owner HARBIN INST OF TECH