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6303C2

Single-Row Deep Groove Ball Bearings
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Parts Number Qty
6303C2 Single-Row Deep Groove Ball Bearings
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Single-row deep groove ball bearings are the most common type of rolling bearing. The raceway grooves in the inner and outer rings form a circular arc with a radius slightly larger than that of the balls.
In addition to open varieties, these bearings may have steel shields or come pre-lubricated with grease maintained by rubber seals installed on one or both sides. Snap rings are sometimes used on the outside diameter of the outer ring.
Cages are generally made of pressed steel, though large bearings and bearings designed for high-speeds may use machined brass cages.

Features

  • Support radial and axial loads
    Single-row DGBBs can sustain radial loads and axial loads in both directions.
  • Proven performance
    DGBBs are the most common type of bearing and are used in countless applications.

Applications

  • Low noise/vibration applications
    DGBBs provide low frictional torque and high rotational speed ideal for equipment where noise and vibration must be avoided.
  • Industrial motors, servomotors, stepper motors, electric machinery, agricultural machinery (tractors, string trimmers), textile machines, carriers/conveyance, film rolling mills, powder/particle clutches, outboard boat motors, etc.
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Display units

Parts Number

6303C2

Boundary Dimensions

d 17 mm Bore diameter
D 47 mm Outside diameter
B 14 mm Width
r (min.) 1 mm Chamfer dimension

Basic Load Ratings

Cr 15000 N Basic dynamic load rating
C0r 6650 N Basic static load rating

Speeds

Grease 17000 min-1 Grease lubrication
Oil (Oil-bath) 20000 min-1 Oil-bath lubrication

Abutment and Fillet Dimensions

da (min.) 22 mm Diameter of shaft abutment
da (max.) 25.5 mm Diameter of shaft abutment
Da (max.) 42 mm Diameter of housing abutment
ra (max.) 1 mm Radius of shaft or housing fillet
Dx (min.) 0 mm Diameter of snap ring recess in the housing
Cy (max.) 0 mm Distance from outer ring side face to snap ring back face

Calculation factors

fo 12.4 Factor

Additional information

z 7 Number of Balls
Dw 8.731 mm Ball Diameter

Mass

(approx.) 0.113 kg

Properties

Types 63 series
Design ( ): None-N, NR
Cage ( ): Pressed steel cage
Seals,Shields ( ): Open (not sealed)
Radial Internal Clearance C2
Tolerance ISO NORMAL CLASS
Designations Basic Load Ratings Radial Internal Clearance Tolerance Class Limiting Speeds Number of Balls Ball Diameter Mass
Cr
(N)		 C0r
(N)		 min
 max
 Grease
(min-1)		 Oil (Oil-bath)
(min-1)		 (mm) (inch) (approx.)
(kg)
6303 15000 6650 ISO NORMAL CLASS 17000 20000 7 8.731 0.344 0.113

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Not to scale.
(*) The chamfer dimensions are minimum values.
6000N, 6000NR, 6001N, 6001NR : Snap ring groove dimensions and snap ring dimensions are not based on ISO 15.

CAD
More Information
NSK Product Type2 DGBB_SR
NSK Product Type Bearing
Designations 6303