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. 618-9913
Mfr. Part No.626-2RS
BrandRS PRO
$5.25
Each
units
6mm 19mm Miniature 6mm Sealed - 1 896N Steel - - - Plain 2.336kN
RS Stock No. 285-2241
Mfr. Part No.51206
BrandSKF
$45.14
Each
units
30mm 52mm Thrust 16mm - - 1 51kN Steel Steel Pressed Steel - Plain 26kN
RS Stock No. 618-9979
Mfr. Part No.6800-2RS
BrandRS PRO
$5.25
Each
units
10mm 19mm Deep Groove 5mm Sealed - 1 585N Steel - - - Plain 1.38kN
RS Stock No. 505-996
Mfr. Part No.6314/C3
BrandSKF
$261.50
Each
units
70mm 150mm Deep Groove 35mm Open - 1 68kN Steel - Steel - Plain 111kN
RS Stock No. 408-9782
Mfr. Part No.626ZZ
BrandNSK
$10.58
Each
units
6mm 19mm Deep Groove 6mm Shielded - 1 885N Steel - Steel - Plain 2.34kN
RS Stock No. 286-7732
Mfr. Part No.6008
BrandSKF
$23.24
Each
units
40mm 68mm Deep Groove 15mm Open - 1 11.6kN Steel - Steel - Plain 17.8kN
RS Stock No. 409-0057
Mfr. Part No.6001ZZ
BrandNSK
$10.37
Each
units
12mm 28mm Deep Groove 8mm Shielded - 1 2.37kN Steel - Steel - Plain 5.1kN
RS Stock No. 334-1534
Mfr. Part No.6002
BrandSKF
$10.54
Each
units
15mm 32mm Deep Groove 9mm Open - 1 2.85kN Steel - Steel - Plain 5.85kN
RS Stock No. 667-1059
Mfr. Part No.6206-2Z/C3
BrandSKF
$22.78
Each
units
30mm 62mm Deep Groove 16mm Shielded - 1 11.2kN Steel - Steel - Plain 20.3kN
RS Stock No. 286-7669
Mfr. Part No.6005
BrandSKF
$13.63
Each
units
25mm 47mm Deep Groove 12mm Open - 1 6.55kN Steel - Steel - Plain 11.9kN
RS Stock No. 286-8482
Mfr. Part No.51102
BrandSKF
$33.80
Each
units
15mm 28mm Thrust 9mm - - 1 15kN Steel Steel Pressed Steel - Plain 9kN
RS Stock No. 286-7631
Mfr. Part No.6004
BrandSKF
$12.05
Each
units
20mm 42mm Deep Groove 12mm Open - 1 5kN Steel - Steel - Plain 9.95kN
RS Stock No. 619-0143
Mfr. Part No.6201-2RS
BrandRS PRO
$5.55
Each
units
12mm 32mm Deep Groove 10mm Sealed - 1 3.1kN Steel - - - Plain 6.89kN
RS Stock No. 893-0195
Mfr. Part No.W6000-2RS1
BrandSKF
$35.60
Each
units
10mm 26mm Deep Groove 8mm Sealed - 1 1.96kN Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 3.97kN
RS Stock No. 893-0198
Mfr. Part No.W6001-2RS1
BrandSKF
$35.79
Each
units
12mm 28mm Deep Groove 8mm Sealed - 1 2.36kN Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 4.42kN
RS Stock No. 884-1219
Mfr. Part No.AC686FZZ/4N/D
BrandBNL
$10.07
1 Bag of 2
Bag(s)
6mm 13mm Radial 5mm Double Shielded - 1 1.25kg Plastic Stainless Steel Acetal Acetal Flanged -
RS Stock No. 285-1529
Mfr. Part No.7202 BEP
BrandSKF
$45.61
Each
units
15mm 35mm Angular Contact 11mm Open - 1 4.8kN Steel - Fibreglass Reinforced Nylon 66 - Plain 8.84kN
RS Stock No. 286-8088
Mfr. Part No.6208
BrandSKF
$32.12
Each
units
40mm 80mm Deep Groove 18mm Open - 1 19kN Steel - Steel - Plain 32.5kN
RS Stock No. 893-0312
Mfr. Part No.W61802-2RS1
BrandSKF
$50.98
Each
units
15mm 24mm Deep Groove 5mm Sealed - 1 1.08kN Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 1.65kN
RS Stock No. 286-8123
Mfr. Part No.6210
BrandSKF
$42.78
Each
units
50mm 90mm Deep Groove 20mm Open - 1 23.2kN Steel - Steel - Plain 37.1kN