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几点辨别真假NSK轴承

网址:www.nsk-zc.cn  2019-12-28  作者:admin    阅读:

几点辨别真假NSK轴承
How to distinguish true and false NSK bearing
一看包装
Look at the packaging
假冒NSK牌轴承外包装与正品的NSK牌轴承外包装有细微的不同之处,其包括箱右侧标注的NSK商标呈红色黑字体,而正品的NSK商标呈白色黑字体。
There are subtle differences between the fake NSK brand bearing outer package and the genuine NSK brand bearing outer package, including that the NSK trademark marked on the right side of the box is in red black font, while the genuine NSK trademark is in white black font.
二比轴身
Two ratio axle body
假冒NSK牌的轴承产品漆膜面较之正品略显不平整,假冒伪劣轴承因缺少防腐措施,没有密封润滑,轴承的感官质量明显低于正品。另外,通过对产品合格证、轴承型号标识以及特殊防伪标记的辨认,也可以辨别出真假。
The paint film surface of bearing products with fake NSK brand is slightly uneven compared with the genuine ones. Due to the lack of anti-corrosion measures and sealing lubrication, the sensory quality of the fake bearings is significantly lower than the genuine ones. In addition, through the identification of product certificate, bearing model identification and special anti-counterfeiting mark, we can also identify the true and false.
三掂重量
Three weigh the weight
相同型号的NSK轴承,假冒轴承的用料明显少于正品。由于多数假冒轴承偷工减料,用一般钢材替代高氧化特殊钢,在重量上会轻语正品。
For NSK bearing of the same model, the material used for fake bearing is obviously less than that for genuine bearing. Due to the fact that most of the fake bearings are Jerry built, ordinary steel is used instead of high oxidation special steel, and the weight will be light.
四看外观
Four look at the appearance.
技术状态正常的向心球轴承,其内、外圈滚道应无剥落和严重磨痕,并呈光亮的一条圆弧沟槽;所有的滚珠应保持圆形,表面无斑点、裂纹和剥落;保持架不松散、不破碎、未磨穿。
The inner and outer raceways of the centripetal ball bearing in normal technical state shall be free of peeling and severe abrasion marks, and shall be in a bright arc groove; all the balls shall be round without spots, cracks and peeling on the surface; the cage shall not be loose, broken or worn through.
五听声音
Five listen to voice.
当用一只手持内圈,另一只手迅速轻推外圈旋转时,要求旋转平稳,只听到滚珠在滚道上滚动的轻微声响,无振动;停止时应逐渐减速,停后无倒退现象。
When one hand is used to hold the inner ring and the other hand is used to gently push the outer ring to rotate rapidly, it is required to rotate stably, only the slight sound of the ball rolling on the raceway can be heard, without vibration; when stopping, it shall slow down gradually, without retrogression after stopping.
六测数据
Six test data
正常的向心球轴承,其内、外圈与滚动体之间的间隙为0.005-0.010mm,当沿径向晃动内外圈时,应感觉无间隙。使用过的轴承,可以用手拿着内圈沿轴晃动几下当外圈和滚珠有明显声响时,说明其配合间隙超过了0.03mm,不应再继续使用。
For normal radial ball bearings, the clearance between the inner and outer rings and the rolling element is 0.005-0.010mm. When shaking the inner and outer rings along the radial direction, there should be no clearance. The used bearing can shake along the shaft with the inner ring held by hand for several times. When there is obvious sound between the outer ring and the ball, it means that the fit clearance is more than 0.03mm, so it should not be used again.

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