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ML7004HVUJ74S - SNR High Precision Angular Contact Ball Bearing
ML7004HVUJ74S - SNR High Precision Angular Contact Ball Bearing
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ML7004HVUJ74S bearing reference breakdown
Below we will break down the ML7004HVUJ74S bearing reference and provide an explanation for each section provided it can actually be broken down. We can split it into 3 parts the prefix, suffix and body of the item code.
The prefix can be found at the beginning of the bearing code:
Prefix
ML - Indicates the bearing is a high precision angular contact bearing, designed for for high speedsThe suffix can be found at the end of the bearing number:
Suffix
U - Universal Single BearingH - 25° contact angle
V - Laminated Phenolic Cage Centered On Outer Ring
J74S - Which indicates preloads (Light, Medium, Heavy) for high speed range
The body of the bearing reference is what is left after removing the suffix and the prefix:
Body
70 - Extra Light Series04 - 20mm Bore Size
d (mm) | 20 | D (mm) | 42 | B (mm) | 12 |
d1 (mm) | 26.6 | D1 (mm) | 37.05 | D2 (mm) | 38.65 |
d2 (mm) | 24.65 | a (mm) | 13 | rs min (mm) | 0.6 |
r1s min (mm) | 0.3 | f0 | 7.52 | Mass (kg) | 0.06 |
da min (mm) | 24.5 | db min (mm) | 24.5 | Da max (mm) | 37.5 |
Db max (mm) | 37.5 | r1a max (mm) | 0.3 | ra max (mm) | 0.6 |
D6 (mm) | 28.6 |
Dynamic load C (kN) | 6.3 | Static load C0 (kN) | 2.95 | Fatigue limit load Cu (kN) | 0.19 |
Nlim (oil) (Tr/min) | 63000 | Nlim (grease) (Tr/min) | 44000 | Axial displacement K Factor | 0.96 |
Preload level | 7 | Preload value (kN) | 0.05 | Axial rigidity (N/µm) | 54 |
Radial rigidity (N/µm) | 119 | Min operating temperature Tmin (°C) | -30 | Max operating temperature Tmax (°C) | 120 |
Characteristic cage frequency FTF (Hz) | 0.42 | Characteristic rolling element frequency BSF (Hz) | 5.28 | Characteristic outer ring frequency BPF0 (Hz) | 5.83 |
Characteristic inner ring frequency BPFI (Hz) | 8.17 | Preload level | 7 |
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