Selecting a bearing

Ball bearing part number selection can only be properly performed with a working knowledge of ball bearing performance expectations and requirements. Size, application, construction and operating conditions need to be taken into account before engaging in the ball bearing selection process which is described below.

Bearing application conditions, environment, required performance

Application conditions, environment, required performance

  • Configuration and purpose of bearing application
  • Application conditions (temperature, humidity, vibration, dust, etc.)
  • Loads
  • Shaft and housing dimensions and materials
  • Rotation: RPM, Rotation precision, Rotation Ring
  • Bearing Torque
  • Noise
  • Life
  • Regulated substance
Selecting a Bearing Part Number

Selecting Part Number

Ball Bearing Tolerance and Grades

Tolerance and Grades

Deciding bearing performance level

Performance Level Factors

Selecting bearing lubricant

Lubricant Selection

Bearing Handling

Handling of Ball Bearings


Condition Table

Please use the form below for selecting a bearing part number and spec.
Application  
Dimension Shaft Diameter
φ
precision(roundness
Material(
mm (Tolerance
μm roughness
μm)
μm)
)
Housing Bore
φ
precision(roundness
Material(
mm (Tolerance
μm roughness
μm)
μm)
)
Housing Diameter
φ mm
Bearing Span mm
Rotation Spec Rotating Ring □ Inner Ring Rotation      □ Outer Ring Rotation
Operation Condition
□ Continous min-1(rpm)
□ Intermittent
□ Back and forth
Application Condition storing temperature and humidity
%RH
Application temperature and humidity
%RH
bearing temperature
Load radial direction N(kgf)
axial direction N(kgf)
(Preload)
N(kgf)
preload method □ Spring preload    □ Solid preload
□ Duplex face to face    □ Duplex back to back
□ Repeat    □ Vibration    □ Impact
conditions:
Torque □ Starting Torque    □ Running Torque mN・m(gf・cm)
conditions:
Noise characteristics  
Others corrosion-resistant, drug-resistant, Magnetism, Food Safety
Bearing Cross Section
Bearing Cross Section