NNU4921/NNU4921K/NN4921/NN4921K_NTN NNU4921/NNU4921K/NN4921/NN4921K进口轴承
NTN NNU4921/NNU4921K/NN4921/NN4921K轴承,双列圆柱滚子轴承，此轴承型号本公司有现货，获取轴承内圈,外圈更多详细资料您可致电我司，NTN NNU4921/NNU4921K/NN4921/NN4921K配合安装尺寸,基本尺寸,滚子粒数,NNU4921/NNU4921K/NN4921/NN4921K价格,外形尺寸,锥度,轴承的图纸、样品、价格或者替换产品等！我们是NTN轴承最佳代理商，所售产品均为原装正品，请您放心购买！ 订购电话：0512-62658883
NNU4921/NNU4921K/NN4921/NN4921K轴承 结构尺寸参数
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系列双列圆柱滚子轴承
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型号NNU4921/NNU4921K/NN4921/NN4921K
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Boundarydimensions
mm- d
- D
- B
- rsmin2
- 105
- 145
- 40
- 1.1
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Basic load ratings
- dynamic
- static
- dynamic
- static
- kN
- kgf
- Cr
- Cor
- Cr
- Cor
- 133
- 268
- 13,500
- 27,400
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Limiting speeds
- rpm
- grease
- oil
- 4,100
- 4,800
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Bearing numbers
- type NNU
- type NN
- cylindrical bore
- tapered bore
- cylindrical bore
- tapered bore
- NNU4921―
- NNU4921K
- NN4921
- NN4921K
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Dimensions
- mm
- Fw
- Ew
- max
- max
- 118
- 134
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Abutment and fillet dimensions- mm
- da
- db
- dc
- dd
- Da
- Db
- min
- min
- max
- min
- min
- max
- min
- ras max
- 111.5
- 115
- 116
- 120
- 138.5
- 138.5
- 136
- 1
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Mass
- kg
- type NNU
- type NN
- cylindrical bore
- tapered bore
- cylindrical bore
- tapered bore
- 1.91
- 1.82
- 1.82
- 1.73
- 双列圆柱滚子轴承系列 NNU4921/NNU4921K/NN4921/NN4921K图片
NNU4921/NNU4921K/NN4921/NN4921K轴承 1、 保持器声“唏利唏利……” 原因分析：由保持器与滚动体振动、冲撞产生，不管润滑脂种类如何都可能产生，承受力矩、负荷或径向游隙大的时候更容易产生 解决方法： A、提高保持器精 B、选用游隙小的轴承或对轴承施加预负荷 C、降低力矩负荷，减少安装误差