CN204175807U - The hermetically sealed bearing of bilateral felt - Google Patents

Abstract

The hermetically sealed bearing of a kind of bilateral felt, the some rolling elements of solid matter on the inner headed face raceway of outer ring, rolling element is the column structure with convexity in the middle part of excircle, internal gland is fixed in the both sides being in rolling element at the inner headed face of outer ring, the diameter of bore of internal gland is greater than and is closely packed in the diameter of a circle that on outer ring raceway, the interior side bus of rolling element surrounds, internal gland arranged outside felt circle, outside gland is stamped outside felt circle, outside gland diameter of bore is greater than and is closely packed in the diameter of a circle that on outer ring raceway, the interior side bus of rolling element surrounds, outside gland turns over cylinder limit button knot on the diameter shrinkage part of periphery termination, outer ring.The utility model not only has good muting function, and bearing also can not occur quality problems because of insufficient lubrication; Rolling element have employed the design of band convexity, thus avoids and cause the too early abraded injury phenomenon of bearing roller to occur owing to bearing the unbalanced load of alternation.

Description

The hermetically sealed bearing of bilateral felt

Technical field

The utility model relates to the hermetically sealed bearing of a kind of bilateral felt, is applicable to some Code in Hazardous Special Locations bearing operation noise being had to strict demand, such as machine tool chief axis, medical equipment, electric automatization instrumentation, building intelligent product etc.

Background technique

Due to the needs produced and live, some Code in Hazardous Special Locations needs to use quiet bearing.Radial direction oil hole is all opened in traditional quiet bearing outer ring cylndrical surface, to facilitate the lubrication of carrying out grease.But simultaneously due to the existence of oilhole, rolling element is not a complete totally enclosed space running, therefore traditional bearing muting function is not often too obvious, traditional quiet bearing needs regular lubricating oil filling fat to safeguard, when client due to operate lack of standardization or forget safeguard time, bearing will reduce greatly due to oil starvation muting function, even there will be the bad phenomenon of rolling element oil starvation locking.

Summary of the invention

The purpose of this utility model is to provide the hermetically sealed bearing of a kind of bilateral felt, solve the defect that traditional bearing noise in operating is bigger than normal, and ensure that rolling element operates in totally enclosed environment, add complete advanced lubrication grease rear bearing when bearing assemble non-maintaining throughout one's life.

The purpose of this utility model realizes as follows: the some rolling elements of solid matter on the inner headed face raceway of outer ring, internal gland is fixed in the both sides being in rolling element at the inner headed face of outer ring, the diameter of bore of internal gland is greater than and is closely packed in the diameter of a circle that on outer ring raceway, the interior side bus of rolling element surrounds, internal gland arranged outside felt circle, outside gland is stamped outside felt circle, outside gland diameter of bore is greater than and is closely packed in the diameter of a circle that on outer ring raceway, the interior side bus of rolling element surrounds, outside gland turns over cylinder limit button knot on the diameter shrinkage part of periphery termination, outer ring, described be closely packed in diameter of a circle that on outer ring raceway, the interior side bus of rolling element surrounds also be bearing assemble on axle time position axle diameter.Bearing outer ring cylndrical surface does not have radial direction oil hole to design, the intensity of outer ring is so not only made greatly to improve, and more easy in bearing mnanufacture technique, the more important thing is that such design avoids traditional bearing and needs radial direction oil hole to carry out the shortcoming of regular grease lubrication; The compression felt design of Double End, the muting function of bearing more quiet than traditional one side felt is better, makes the life-span of bearing longer, more attractive in appearance; Bearing self is with seal arrangement, and user is without the need to again sealing can use bearing, and the existing dust that prevents enters inner dust reduction capability, has again the sealing function of Bearing inner outflow of lubrication oil simultaneously.

Rolling element is the column structure with convexity in the middle part of excircle, i.e. drum organization, making bearing automatically can carry out axially loaded adjustment when running up, avoiding rolling element to fray too early.

The utility model adopts bilateral hermetically sealed design, and bearing oil just fills up while manufacture, and maintenance-free, not only has good muting function but also bearing also can not occur quality problems because of insufficient lubrication; The effect that bilateral felt absorbs noise to bearing is more obvious, reduces during bearing High Rotation Speed than the bearing noise of one-sided felt; Rolling element have employed the design of band convexity, makes bearing automatically can carry out axially loaded adjustment when running up, thus avoids and cause the too early abraded injury phenomenon of bearing roller to occur owing to bearing the unbalanced load of alternation.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

With reference to Fig. 1, the some rolling elements 5 of solid matter on the inner headed face raceway of outer ring 1, rolling element 5 is the column structure with convexity in the middle part of excircle, internal gland 2 is fixed in the both sides being in rolling element 5 at the inner headed face of outer ring 1, the diameter of bore of internal gland 2 is greater than the diameter of a circle that the interior side bus that is closely packed in rolling element 5 on the raceway of outer ring 1 surrounds, internal gland 2 arranged outside felt circle 3, outside gland 4 is stamped outside felt circle 3, outside gland 4 diameter of bore is greater than the diameter of a circle that the interior side bus that is closely packed in rolling element 5 on the raceway of outer ring 1 surrounds, outside gland 4 turns over cylinder limit button knot on the diameter shrinkage part of periphery termination, outer ring 1, with lower than the main body in the middle part of the periphery of outer ring 1, impact and bearing hole is avoided to assemble.

Claims (2)

1. the hermetically sealed bearing of bilateral felt, the some rolling elements of solid matter on the inner headed face raceway of outer ring, it is characterized in that: internal gland (2) is fixed in the both sides being in rolling element (5) at the inner headed face of outer ring (1), the diameter of bore of internal gland (2) is greater than the diameter of a circle that the interior side bus that is closely packed in rolling element (5) on outer ring (1) raceway surrounds, internal gland (2) arranged outside felt circle (3), outside gland (4) is stamped in felt circle (3) outside, outside gland (4) diameter of bore is greater than the diameter of a circle that the interior side bus that is closely packed in rolling element (5) on outer ring (1) raceway surrounds, outside gland (4) is turned over cylinder limit button knot on the diameter shrinkage part of outer ring (1) periphery termination.

2. the hermetically sealed bearing of bilateral felt according to claim 1, is characterized in that: rolling element (5) is the column structure with convexity in the middle part of excircle.