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



In varieties of Pressed Steel Cages {EW} and Machined Brass Cages {EM}
Metric Series :
  • NU, N, NJ and NUP Series- Single row cylindrical roller bearings
  • NNU, NN, NNUP Series - Double row cylindrical roller bearings
  • NCF and NGJ Series - Single row full complement cylindrical roller bearings
  • NNF Series - Double row full complement cylindrical roller bearings
Inch Series :
  • XLRJ, MRJ, LRJ, LLRJ and MMRJ Series - Single row cylindrical roller bearings


Cage & Needle Roller Assemblies
Drawn Cup Needle Roller Bearings : HK, SCE and BK Series
Solid Needle Roller Bearings
Drawn Cup Needle Roller Bearings :
  • RLM, RNA49 - Without Inner Ring Metric Series
  • LM, NA49, NA48, NA69 - With Inner Ring Metric Series
  • HJ - Without Inner Ring inch Series

Inner Ring (IR)
One-way Clutches : 

HF and HFL Series
Thrust Needle Roller Bearings
AXK, AS11, 811 and 812 Series
Cam Followers
KR, KRV, NUKRV and CR Series
Roller Followers
NAST, RNAST, NART, NA2200, RNA2200 Series

Inch Series :
  • XLRJ, MRJ, LRJ, LLRJ and MMRJ Series - Single row cylindrical roller bearings