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  3. Metric series d 5-9mm

Classification

Double-sided with sealing ring
d 5-12mm
d 15-25mm
d 25-40mm
d 40-60mm
d 60-75mm
d 75-90mm
d 90-105mm
d 105-130mm
d 130-160mm
d 160-190mm
d 190-240mm
Miniature ball bearing
Metric series d 1-4mm
Metric series d 5-9mm
Metric series with flanged outer ring d-1-4mm
Metric series with flanged outer ring d 5-9mm
Inch series d 1.016-9.525
Inch series with flanged outer ring d 1.191-9.525mm
Stainless steel bearings
Stainless steel bearing
Angular contact ball bearing
Single row angular contact ball bearing
Four point contact ball bearing
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  • Bearing code
    Open type 687
    Dust cover type 687ZZ
    Sealed 2RZ 687-2RZ
    Sealed 2RS 687-2RS
  • External dimensions
    d 7
    D 14
    B 3.5
    B1 5
    R(1)(minimum) 0.15
    R1(1)(minimum) 0.15
  • Rated load (N)
    Cr 1170
    Cor 510
  • Rated load {kgf}
    Cr 120
    Cor 52
  • Extreme speed (rpm)
    Lubricate ZZ with grease ZRZ. ZRS 40000
    D·D 34000
    Oil lubrication Z 45000
  • Installation size (mm)
    Da(minimum) 8.2
    Db(maximum) 8.5
    Da (maximum) 12.8
    Db(minimum) 12.7
    Ra(maximum) 0.15
    Rb(maximum) 0.15
  • Weight (g) (reference)
    Open type 2.13
    Dust cover type 2.97
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