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NSK bearing considerations should be used  

2012-09-13 11:25:33|  分类: 技术 |  标签: |举报 |字号 订阅

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1、轴和nsk轴承室公差的选择与控制:nsk轴承压入后应转动灵活无阻滞感。如有明显转动不灵活,则表明轴的尺寸太大了,公差要下调。如nsk轴承压入轴后用手转动有明显“沙沙”感,则可能是轴的公差太大或轴的圆度不好。所以在控制好轴和nsk轴承室公差时也要控制好圆度,目前国内很多厂家只对公差进行控制,没有对圆度进行控制。
Select room 1, and NSK bearing tolerances and control: NSK bearings pressed into rotational flexibility should be no block. If there are clearly not flexible rotation, then axis dimensions are too big, the tolerance to cut. NSK bearing onto the shaft by hand after turning there is a clear "rustle" sense, the tolerances of the shaft may be too large or the roundness of the shaft well. So in the control room good and NSK bearing tolerances, you also want to control the roundness, many domestic manufacturers currently control only tolerance, not to control the roundness.
Assembly methods 2, NSK bearings: NSK bearings are high-precision products,
2、nsk轴承的装配方式:因为nsk轴承是高精度产品,如装配不当很容易对角接触球轴承沟道造成损伤,导致角接触球轴承损坏。角接触球轴承在装配时应有专用的模具,不能随意敲打,在压入轴时只能小圈受力,压大圈时只能大圈受力。装配时要求采用气压或液压,在压装时上下模要外于水平状态,如有倾斜会导致nsk轴承沟道因受力损坏,而使nsk轴承产生导响。
such as improper Assembly very easy diagonal contact ball bearing raceway caused damage, cause damage to the angular contact ball bearing. Angular contact ball bearings in the Assembly should have a dedicated mold, cannot be beat at will, force in pressing axis only small circles, pressing circle only large ring bearing. Assembly call for pneumatic or hydraulic, at the time of pressing die outside to level up or down status, such as the tilt causes mechanical damage of NSK bearing Raceway, and NSK bearing rings.
3、装配异物的防止:nsk轴承在装到转子上做动平衡时很容易将动平衡时产生的铁屑进入nsk轴承内部,因此最好是装nsk轴承前做动平衡。有一些厂家为了装配方便,装配时在nsk轴承室内涂上一些油或油脂起润滑效果,但往往操作人员很难将量控制好,如果油或油脂在nsk轴承室内积留较多,在nsk轴承转动时很容易沿着轴进入nsk轴承内部。nsk轴承室最好是不要涂油或油脂,如非涂不可则要控制不得在nsk轴承室内有积留。
3, assembling foreign object prevention: NSK bearing when mounted to the rotor dynamic balance easily produced when iron filings into the NSK bearing internal dynamic balance, so it is best to install NSK bearing dynamic balancing before. Some manufacturers for ease of Assembly, Assembly in interior of NSK bearings coated with some oil or grease lubrication effects, but in many cases the operator is difficult to control, if oil or grease in NSK bearing Interior accumulates more, NSK bearings along the axis rotates easily access to NSK bearings inside. NSK bearing room it is best not to paint oil or grease, such as non-coating is not available to control shall not be in NSK bearing Interior accumulates.
nsk轴承的寿命是与制造、装配、使用都紧密相关的,必须在每个环节都做好,才能使nsk轴承处于最佳的运转状态,从而延长nsk轴承的使用寿命。
NSK bearing life is closely related to the manufacture, Assembly, use, must be doing at each of the sessions can NSK bearings are in top running condition, thus extending the life of NSK bearings.
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