Quality Bearing Machinery

United Arab Emirates

Radial Ball Bearings

Radial ball bearings are probably the most widely used and most recognized ball bearing. These bearings have one row of balls (referred to as a single row), that revolves around the ball path. This feature provides another name for the bearings, they are commonly called deep groove ball bearings. Although designed to primarily carry radial loads, a radial ball bearing’s raceways are deep enough that it can also carry reasonable thrust loads.
Single Row Deep Groove :
  • 6000 Series - Extra Light Ball Bearings – Ideal for limited space applications
  • 6200 Series - Light Series Ball Bearings – Balanced between space and load capacity
  • 6300 Series - Medium Series Ball Bearings – Ideal for heavier load capacity applications
  • 6700, 6800, 6900 Series - Thin Section Bearings
Miniature :
  • 600 Series - Metric Size
  • R Series - Inch Size

Angular contact ball bearings are classified as single row, radial ball bearings. Unlike other radial ball bearings, the contact points through the angular contact bearing are measured in terms of how far they deviate from the normal pure radial load (at a 90˚ angle to the shaft). Angular contact bearings are designed to operate with an internal contact angle of either 15˚, 30˚ or 40˚ from the standard 90˚ angle to the shaft. These bearings are designed for the balls to ride high on the edge of one of the raceways: the raceway on the opposite side of the outer ring is much shorter to accommodate assembly. Designations for the various contact angles are as follows:
15˚ angle of contact - C
40˚ angle of contact - B
30˚ angle of contact - No Designation 

Single Row Angular Contact :

  • 7000 Series
  • 7200 Series
  • 7300 Series
Double Row Angular Contact :
  • 3200 Series (or 5200) - Lighter load, higher speed, more/smaller balls per bore diameter.
  • 3300 Series (or 5300) - Heavier load, slower speed, fewer/larger balls per bore diameter.
  • 305700 Series - Double row cam rollers
Four-point contact Ball Bearings :
  • QJ 2 Series - Metric
  • QJ 3 Series - Metric
  • QJL Series - Inch

Super Precision / Spindle Series

  • 1200 Series
  • 1300 Series
  • 2200 Series
  • 2300 Series
  • 51100 Series
  • 51200 Series
  • 51300 Series
  • 51400 Series
  • 0- Inch Series
  • Metric/ Inch Series
  • Chrome/ Stainless Steel

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Contact Details

Quality Bearing Machinery

P. O. Box: 8624 Dubai, United Arab Emirates, Dubai, , United Arab Emirates

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