7921/DB/DF/DT_NTN 7921/DB/DF/DT進口軸承
NTN 7921/DB/DF/DT軸承,角接觸球軸承1，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 7921/DB/DF/DT代號,基本尺寸,安裝尺寸,基本額定載荷,精度等級,裝配,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
7921/DB/DF/DT軸承 結構尺寸參數
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系列角接觸球軸承1
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型號7921/DB/DF/DT
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Boundarydimensions mm- d
- D
- B
- ·B
- rsmin2
- r1smin2
- 105
- 145
- 20
- 40
- 1.1
- 0.6
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Basic load ratings
- dynamic
- static
- dynamic
- static
- kN
- kgf
- Cr
- Cor
- Cr
- Cor
- 48.5
- 54.5
- 4,950
- 5,550
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Limiting speeds
- rpm
- grease
- oil
- 4,400
- 5,900
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Bearing numbers
- 7921
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Load center
- mm
- a
- 46
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Mass
- kg
- single
- .approx.
- 0.972
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Basic load ratings
- dynamic
- static
- dynamic
- static
- (duplex) kN
- (duplex) kgf
- Cr
- Cor
- Cr
- Cor
- 79.0
- 109
- 8,050
- 11,100
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Limiting speeds
- (duplex)
- rpm
- grease
- oil
- 3,500
- 4,700
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Bearing numbers2
- DB
- DF
- DT
- DB
- DF
- DT
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Abutment and fillet dimensions
mm
- da
- db
- Da
- Db
- ras
- r1as
- min
- min
- max
- max
- max
- max
- 112
- 112
- 138
- 140.5
- 1
- 0.6
- 角接觸球軸承1系列 7921/DB/DF/DT圖片
NTN7921/DB/DF/DT軸承 滾動軸承外環故障頻率：BFOr≌0.4Nn滾動軸承內環故障頻率：BFIr≌0.6Nn滾動軸承保持架故障頻率：FTFr≌0.4N以上符號：n=滾動體數目。N=軸的轉速。{TodayHot}注：1.滾動軸承沒有滑動；2.滾動軸承幾何尺寸沒有變化；3.軸承外環固定不旋轉.滾動軸承外環故障頻率：BFOe≌N(0.5n-1.2)滾動軸承內環故障頻率：BFIe≌N(0.5n+1.2)滾動軸承滾動體故障頻率：BS