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. 893-0287
Mfr. Part No.W608-2RS1
BrandSKF
$36.09
Each
units
8mm 22mm Deep Groove 7mm Sealed - 1 780N Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 1.99kN
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. 285-1349
Mfr. Part No.2200 E-2RS1TN9
BrandSKF
$74.45
Each
units
10mm 30mm Self Aligning 14mm Sealed - 2 1.18kN Steel - Fibreglass Reinforced PA - Plain 5.53kN
RS Stock No. 667-1100
Mfr. Part No.6305-2Z/C3
BrandSKF
$23.05
Each
units
25mm 62mm Deep Groove 17mm Shielded - 1 11.6kN Steel - Steel - Plain 23.4kN
RS Stock No. 505-647
Mfr. Part No.6319/C3
BrandSKF
$636.86
Each
units
95mm 200mm Deep Groove 45mm Open - 1 118kN Steel - Steel - Plain 159kN
RS Stock No. 619-0480
Mfr. Part No.6006-2RS
BrandRS PRO
$10.04
Each
units
30mm 55mm Deep Groove 13mm Sealed - 1 8.3kN Steel - - - Plain 13.3kN
RS Stock No. 893-7470
Mfr. Part No.SS61904-2RS
BrandRS PRO
$17.08
Each
units
20mm 37mm Deep Groove 9mm Sealed - 1 2.96kN Stainless Steel - - - Plain 5.12kN
RS Stock No. 619-0288
Mfr. Part No.6803-2RS
BrandRS PRO
$7.85
Each
units
17mm 26mm Deep Groove 5mm Sealed - 1 930N Steel - - - Plain 1.68kN
RS Stock No. 893-7307
Mfr. Part No.SS604-2RS
BrandRS PRO
$7.83
Each
units
4mm 12mm Deep Groove 4mm Sealed - 1 348.8kN Stainless Steel - - - Plain 936kN
RS Stock No. 125-1241
Mfr. Part No.W 6205-2RS1/VP311
BrandSKF
$92.20
Each
units
25mm 52mm Deep Groove 15mm Sealed - 1 7.65kN Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 11700N
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. 893-7240
Mfr. Part No.SS6000-2RS
BrandRS PRO
$8.81
Each
units
10mm 26mm Deep Groove 8mm Sealed - 1 1.764kN Stainless Steel - - - Plain 4.095kN
RS Stock No. 285-0605
Mfr. Part No.61805-2RZ
BrandSKF
$32.90
Each
units
25mm 37mm Deep Groove 7mm Shielded - 1 2.6kN - - Steel - Plain 4.36kN
RS Stock No. 109-961
Mfr. Part No.FT8M/1B/D
BrandBNL
$3.13
Each
units
8.1mm 21.7mm Thrust 3mm - - 1 40kg Plastic Carbon Steel Acetal Acetal Plain -
RS Stock No. 286-8252
Mfr. Part No.6305
BrandSKF
$19.88
Each
units
25mm 62mm Deep Groove 17mm Open - 1 11.6kN Steel - Steel - Plain 23.4kN
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. 442-0010
Mfr. Part No.6004-2RSH
BrandSKF
$17.12
Each
units
20mm 42mm Deep Groove 12mm Sealed - 1 5kN Steel - Steel - Plain 9.95kN
RS Stock No. 285-0740
Mfr. Part No.6006-2RS1
BrandSKF
$20.65
Each
units
30mm 55mm Deep Groove 13mm Sealed - 1 8.3kN - - Steel - Plain 13.8kN
RS Stock No. 618-9991
Mfr. Part No.6000-2RS
BrandRS PRO
$5.90
Each
units
10mm 26mm Deep Groove 8mm Sealed - 1 1.96kN Steel - - - Plain 4.62kN
RS Stock No. 285-1298
Mfr. Part No.1205 ETN9
BrandSKF
$47.52
Each
units
25mm 52mm Self Aligning 15mm Open - 2 4kN Steel - Fibreglass Reinforced PA - Plain 14.3kN