Ball Bearings

A ball bearing is a rolling bearing used within the power transmission industry which features metal balls between a rotating or oscillating shaft and outer ring. With applications in everything from bicycle wheels to aerospace engineering, ball bearings are designed to reduce rotational friction while supporting radial loads. Incorporating a rolling element that guarantees a low coefficient of friction. Ball bearings ensure smooth and uninterrupted rotation of, for example, an axle or motor shaft.


The only way for a ball bearing to operate efficiently or at high speeds is with the right lubrication which can work at high temperatures. The correct oil or grease lubricant has to be used with each bearing depending on its nominal lifespan and load. For further information about ball bearings and how to decipher the codes on them, see our ball bearings guide.

Ball bearings that spin at high speeds require lubricant and a clean environment. Having the ball bearings shielded offers better protection against dirt and grease, therefore, the ball bearings have a longer lifespan. Sealed ball bearing offer reliability as they reduce the risk of dust and dirt entering the ball bearing mechanism. They also help to preserve the lubricant within the bearing and keep it running smoother, for longer.

Types of Ball Bearings

Ball bearings are used in machines to lessen and transform sliding friction to rolling friction and support radial and axial loads. Ball bearings are available in open and sealed versions, depending on the environmental requirements. They are also available in a range of diameters, supplied in metric sizes. Types include:

  • Deep-groove ball bearings for when higher load capacity is required. Deep Groove refers to the race (the groove where the balls rest). There is therefore a larger space between the inner and outer rings, than the diameter of the ball. This leaves space for the rubber seals.
  • Angular Contact ball bearings
  • Single-row ball bearings are the most common
  • Linear ball bearings
  • Miniature ball bearings
  • Radial deep groove ball bearing
  • Self-aligning ball bearings used with long shafts
  • Thrust ball bearings
  • Ceramic bearings resistant to corrosion and very little lubrication
  • Shielded bearings
  • Double row bearings have two rows
  • Caged bearings secure the balls

Ball bearings are used in objects with moving parts and have many applications. These include quite specific uses such as in computer fans, watches, gearboxes and children's toys as well as:

  • Food and Beverage Industry
  • Pharmaceutica
  • Medical industry
  • Engines and Pumps
  • Motorsports
  • Printing

...
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Description Price Inside Diameter Outside Diameter Ball Bearing Type Race Width End Type Flange Outside Diameter Number of Rows Static Load Rating Material Ball Material Cage Material Race Material Race Type Dynamic Load Rating
RS Stock No. 285-0790
Mfr. Part No.623
BrandSKF
SGD7.22
Each
units
3mm 10mm Deep Groove 4mm Open - 1 180N - - Steel - Plain 540N
RS Stock No. 618-9979
Mfr. Part No.6800-2RS
BrandRS PRO
SGD4.56
Each
units
10mm 19mm Deep Groove 5mm Sealed - 1 585N Steel - - - Plain 1.38kN
RS Stock No. 408-9754
Mfr. Part No.625ZZ
BrandNSK
SGD5.30
Each
units
5mm 16mm Deep Groove 5mm Shielded - 1 670N Steel - Steel - Plain 1.73kN
RS Stock No. 505-647
Mfr. Part No.6319/C3
BrandSKF
SGD532.65
Each
units
95mm 200mm Deep Groove 45mm Open - 1 118kN Steel - Steel - Plain 159kN
RS Stock No. 409-0271
Mfr. Part No.6008ZZ
BrandNSK
SGD21.13
Each
units
40mm 68mm Deep Groove 15mm Shielded - 1 11.5kN Steel - Steel - Plain 16.8kN
RS Stock No. 667-1059
Mfr. Part No.6206-2Z/C3
BrandSKF
SGD19.05
Each
units
30mm 62mm Deep Groove 16mm Shielded - 1 11.2kN Steel - Steel - Plain 20.3kN
RS Stock No. 409-0085
Mfr. Part No.6002ZZ
BrandNSK
SGD9.14
Each
units
15mm 32mm Deep Groove 9mm Shielded - 1 2.83kN Steel - Steel - Plain 5.6kN
RS Stock No. 667-1052
Mfr. Part No.6204-2Z/C3
BrandSKF
SGD13.04
Each
units
20mm 47mm Deep Groove 14mm Shielded - 1 6.55kN Steel - Steel - Plain 13.5kN
RS Stock No. 505-659
Mfr. Part No.6316/C3
BrandSKF
SGD347.58
Each
units
80mm 170mm Deep Groove 39mm Open - 1 86.5kN Steel - Steel - Plain 130kN
RS Stock No. 408-9883
Mfr. Part No.608ZZ1MC3E
BrandNSK
SGD7.77
Each
units
8mm 22mm Deep Groove 7mm Shielded - 1 1.37kN Steel - Steel - Plain 3.3kN
RS Stock No. 667-1116
Mfr. Part No.6308-2Z/C3
BrandSKF
SGD52.19
Each
units
40mm 90mm Deep Groove 23mm Shielded - 1 24kN Steel - Steel - Plain 42.3kN
RS Stock No. 505-996
Mfr. Part No.6314/C3
BrandSKF
SGD229.32
Each
units
70mm 150mm Deep Groove 35mm Open - 1 68kN Steel - Steel - Plain 111kN
RS Stock No. 667-1061
Mfr. Part No.6208-2Z/C3
BrandSKF
SGD33.25
Each
units
40mm 80mm Deep Groove 18mm Shielded - 1 19kN Steel - Steel - Plain 32.5kN
RS Stock No. 409-0445
Mfr. Part No.6203DDU
BrandNSK
SGD10.74
Each
units
17mm 40mm Deep Groove 12mm Sealed - 1 4.8kN Steel - Steel - Plain 9.55kN
RS Stock No. 506-006
Mfr. Part No.6313/C3
BrandSKF
SGD212.59
Each
units
65mm 140mm Deep Groove 33mm Open - 1 60kN Steel - Steel - Plain 97.5kN
RS Stock No. 409-0467
Mfr. Part No.6204ZZ
BrandNSK
SGD11.01
Each
units
20mm 47mm Deep Groove 14mm Shielded - 1 6.6kN Steel - Steel - Plain 12.8kN
RS Stock No. 618-9884
Mfr. Part No.623-2Z
BrandRS PRO
SGD3.37
Each
units
3mm 10mm Miniature 4mm Shielded - 1 219N Steel - - - Plain 631N
RS Stock No. 667-1125
Mfr. Part No.6309-2Z/C3
BrandSKF
SGD64.37
Each
units
45mm 100mm Deep Groove 25mm Shielded - 1 31.5kN Steel - Steel - Plain 55.3kN
RS Stock No. 667-1055
Mfr. Part No.6205-2Z/C3
BrandSKF
SGD12.44
Each
units
25mm 52mm Deep Groove 15mm Shielded - 1 7.8kN Steel - Steel - Plain 14.8kN
RS Stock No. 618-9957
Mfr. Part No.608-2RS
BrandRS PRO
SGD3.93
Each
units
8mm 22mm Miniature 7mm Sealed - 1 1.379kN Steel - - - Plain 3.293kN