634 miniature ball bearing
634 miniature ball bearing


634 miniature ball bearing include 634 bearing, 634 2RS bearings,634ZZ bearings.

Miniature bearing are simple in design, non-separable, suitable for high and even very high speeds and are robust in operation, requiring little maintenance.Deep-groove bearings have higher load ratings for their size than shallow-groove , but are also less tolerant of misalignment of the inner and outer races
Miniature bearing suitable for precision instrument, low noise electromotor, automobile and motorcycle, binding machines, plastic packaging machines, wringing machine, machine pad iron, vibration plate, screw type cold water machine, welding machine, cutting machine, steel making equipment, air purification equipment, vortex pump, beverage shop equipment, plastic wire drawing machine, soil tillage machinery, stainless steel reactor, forklift, building materials rubber cutting machine, and so on. It is the the most widely used bearing type.

Part Number 634 – R-1640 Miniature Ball Bearings Bearing
Bore Dia (d) 4 mm
Outer Dia (D) 16mm
Width (B) 5mm
Bearing Type Shielded or Seal and Open are available.
Material 52100 Chrome steel, stainless steel and ceramic are available.
Dynamic Load Rating (Cr) (Newtons) 1139
Static Load Rating (Cor) (Newtons) 418
Max Speed (Grease) (X1000 RPM) 36
Max Speed (Oil) (X1000 RPM) 43
Ball Qty 7
Ball Dia (Dw) 2.3810mm
Weight (g) (grams) 5.24
Note ABEC Grades 1, 3, 5, 7, and 9 are available. Also, the equivalent ISO classes.