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Bearing Unit With Optimized Clamping System

A technology for bearings and collars, applied in the direction of bearing elements, bearings for rotary motion, bearings, etc., which can solve the problems of weakening the radial inner ring, failing to obtain satisfactory results, and not being able to sufficiently reduce the thickness of the circular sector

Inactive Publication Date: 2021-09-17
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This solution has not proven effective, since the thickness of the circular sector cannot be reduced sufficiently to provide the necessary flexibility due to the risk of over-weakening the end portion of the radially inner ring and causing it to break due to over-clamping
[0007] Other solutions, such as making the collar twice the inner diameter, or forming an inner groove in the end portion of the inner ring, also failed to achieve satisfactory results

Method used

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  • Bearing Unit With Optimized Clamping System
  • Bearing Unit With Optimized Clamping System
  • Bearing Unit With Optimized Clamping System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Embodiments of a bearing unit according to the invention will now be described, by way of example only, with reference to the above-mentioned drawings.

[0019] special reference figure 1 , the bearing unit 10 for use in the agricultural sector and / or in the manufacturing sector (eg textile, mining, motor vehicle or food industry) may be interposed eg between a rotating shaft and a housing element which does not form part of the invention , and the bearing unit 10 includes:

[0020] - fixed ( / stationary) (stationary) radially outer ring 31,

[0021] - a radially inner ring 33 rotatable about the central axis of rotation X of the bearing unit 10,

[0022] - between the radially outer ring 31 and the radially inner ring 33 rows of rolling elements 32, in this case rolling elements 32 being balls,

[0023] - a cage 34 for containing ( / containing) the rolling bodies to hold the rolling elements of the row of rolling bodies 32 in position,

[0024] - A collar 20 for clam...

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PUM

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Abstract

A bearing unit (10) having a radially outer ring (31) which is stationary, a radially inner ring (33), rotatable around a central rotation axis (X) of the bearing unit (10), provided, in an end portion (33a) thereof, with at least two segments of circular sectors (40) separated by at least two grooves (41), a row of rolling elements (32) interposed between the radially outer ring (31) and the radially inner ring (33), and a collar (20) for clamping the radially inner ring (33) on to a shaft; each circular sector segment (40) is provided with a lip (42) having a thickness (s) and a step (43) having a thickness (s+s1), wherein the thickness (s+s1) of the step (43) is greater than the thickness (s) of the lip (42).

Description

technical field [0001] The invention relates to a bearing unit provided with a collar for clamping a radially inner ring to a rotating shaft. Due to the simple and economical manufacture of such a bearing unit, such a bearing unit is suitable for use in the manufacturing sector, especially in the agricultural sector. [0002] In particular, the bearing unit according to the invention is provided with rolling elements and has an optimized clamping system for a collar which can grip a plurality of circular sectors of the radially inner ring separated by grooves segment and clamp it on the shaft. Background technique [0003] Bearing units provided with rolling elements and systems for clamping the unit to a rotating shaft are known. [0004] Bearing units are used to allow relative movement of a part or assembly with respect to another part or assembly. Typically, a bearing unit has a first component such as a radially inner ring fixed to a first component such as a rotatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C19/16F16C19/52F16C33/58
CPCF16C19/16F16C19/527F16C33/581F16C19/06F16C33/586F16C35/063F16C2240/60F16C2310/00F16D1/0864F16C23/084F16C2226/10F16C33/7806
Inventor 福斯托·巴拉卡安德里亚·A·贝尔托利尼法比奥·法拉斯基帕斯夸莱·弗雷扎
Owner AB SKF