Home>Bearing knowledge>On the "common methods for quality judgment of rolling bearings"

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Talking about "Common Methods for Judging the Quality of Rolling Bearings"

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Can the steel printing be clear: the brand name, label, etc. will be printed on the rolling bearing body. The font is very. Qin 銎 銎 銎 褂 褂 褂 褂 〖 〖 酰 酰 酰 谖淳 谖淳 谖淳 碇熬 碇熬 碇熬 碇熬 碇熬 碇熬 棺 棺 棺 棺 棺 棺 棺 棺嫉. The front 嫉 睿 睿 环 环 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 而 仿 仿 仿 仿 仿
Can there be noise: the left hand grasps the inner sleeve of the bearing; the right hand pushes the outer sleeve to make it rotate; listen to whether it can have noise, because the production conditions of most counterfeit products are backward; thorough craft workshop operation; inevitably in the production process It will be mixed with impurities such as sand; it will be hidden in the bearing body; therefore, the noise will be announced during the rotation. This is the biggest difference between the strict implementation of the production specifications and the operation of the factory brand.
Whether the appearance of dirty oil traces: this should be unique attention when purchasing bearings. Because the current domestic anti-rust skills are not unique to the home; so the rust-proof treatment of the bearing body is very simple to leave a thick trace of oil; Sticky and sticky on the hand; foreign original bearings can not see the traces of anti-rust oil; but it is a unique and careful expert said that the bearing smells a taste; certainly it is under the anti-rust oil; just can not see Nothing.
Whether the chamfer can be even: the chamfer of the bearing; that is, the intersection of the horizontal and the vertical; the counterfeit bearing is restrained by the production skill; the position of the corners is not satisfactory.
1; bearing radial load The first bearing to accept the radial load is the radial bearing. The nominal touch angle of this type of bearing a0 <= 45 0. The rain-like roller bearing is larger than the radial bearing that the ball bearing can accept.
N-type and NU cylindrical roller bearings can only accept radial loads; other types of radial bearings can accept both radial loads and axial loads.
2; axial load of bearing The primary bearing that accepts axial load is generally thrust bearing; its nominal touch 旮旯a0>450. Thrust bearing and thrust angle touch ball bearing can accept one or two axes together according to different layouts. Xiangli. When accepting the unique force of the force, it is preferred to use thrust cylindrical roller bearings and thrust spherical roller bearings.
Thrust spherical roller bearings and one-way thrust angle contact ball bearings can accept axial and radial loads together; other thrust bearings can only accept axial loads.
3; the length of the bearing itself compensates for the support of a shaft and rolling bearings generally use the combination of fixed bearing and swimming bearing combination. The floating bearing compensates for the length error and thermal expansion of the shaft.
NU-type and N-type cylindrical roller bearings are aspirational swimming bearings; these bearings can compensate for the length itself. The inner and outer rings of the bearing can be used tightly.
4, the length of the sliding cooperation can not compensate for the different bearings (such as deep groove ball bearings and spherical roller bearings) can also be used as a swimming bearing. One of the two rings of this type of bearing is cooperative; there is no axial fixed surface. A ferrule of the bearing is movable on its bearing surface.
5, can be separated from the bearing (accuracy)
This is a rolling bearing that can be separated by a ferrule; its strength is outstanding when both ferrules are tightly coupled.
Can be separated from bearings including four-point ball bearings, double-half inner ring double row angular touch ball bearings, cylindrical roller bearings, tapered roller bearings, thrust ball bearings, thrust cylindrical roller bearings and thrust spherical roller bearings.

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A captive bolt pistol (also variously known as a cattle gun, stunbolt gun, bolt gun, or stunner) is a device used for stunning animals prior to slaughter.

The principle behind captive bolt stunning is a forceful strike on the forehead using a bolt to induce unconsciousness. The bolt may or may not destroy part of the brain.

The bolt consists of a heavy rod made of non-rusting alloys, such as stainless steel. It is held in position inside the barrel of the stunner by means of rubber washers. The bolt is usually not visible in a stunner in good condition. The bolt is actuated by a trigger pull and is propelled forward by compressed air or by the discharge of a blank round ignited by a firing pin. After striking a shallow but forceful blow on the forehead of the animal, spring tension causes the bolt to recoil back into the barrel.

The captive bolt pistols are of three types: penetrating, non-penetrating, and free bolt. The use of penetrating captive bolts has, largely, been discontinued in commercial situations in order to minimize the risk of transmission of disease.

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