NNU4921/NNU4921K/NN4921/NN4921K_NTN NNU4921/NNU4921K/NN4921/NN4921K進口軸承
NTN NNU4921/NNU4921K/NN4921/NN4921K軸承,雙列圓柱滾子軸承，此軸承型號本公司有現貨，獲取軸承內圈,外圈更多詳細資料您可致電我司，NTN NNU4921/NNU4921K/NN4921/NN4921K配合安裝尺寸,基本尺寸,滾子粒數,NNU4921/NNU4921K/NN4921/NN4921K價格,外形尺寸,錐度,軸承的圖紙、樣品、價格或者替換產品等！我們是NTN軸承最佳代理商，所售產品均為原裝正品，請您放心購買！ 訂購電話：0512-62658883
NNU4921/NNU4921K/NN4921/NN4921K軸承 結構尺寸參數
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系列雙列圓柱滾子軸承
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型號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
- 雙列圓柱滾子軸承系列 NNU4921/NNU4921K/NN4921/NN4921K圖片
NNU4921/NNU4921K/NN4921/NN4921K軸承 1、 保持器聲“唏利唏利……” 原因分析：由保持器與滾動體振動、沖撞產生，不管潤滑脂種類如何都可能產生，承受力矩、負荷或徑向游隙大的時候更容易產生 解決方法： A、提高保持器精 B、選用游隙小的軸承或對軸承施加預負荷 C、降低力矩負荷，減少安裝誤差