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. 893-7307
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. 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. 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. 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. 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. 286-7647
Mfr. Part No.6004-2Z
BrandSKF
$13.63
Each
units
20mm 42mm Deep Groove 12mm Shielded - 1 5kN - - Steel - Plain 9.95kN
RS Stock No. 286-8066
Mfr. Part No.6207
BrandSKF
$27.12
Each
units
35mm 72mm Deep Groove 17mm Open - 1 15.3kN Steel - Steel - Plain 27kN
RS Stock No. 286-8072
Mfr. Part No.6207-2Z
BrandSKF
$28.12
Each
units
35mm 72mm Deep Groove 17mm Shielded - 1 15.3kN Steel - Steel - Plain 27kN
RS Stock No. 619-0468
Mfr. Part No.6205-2RS
BrandRS PRO
$10.12
Each
units
25mm 52mm Deep Groove 15mm Sealed - 1 7.8kN Steel - - - Plain 14kN
RS Stock No. 667-1197
Mfr. Part No.6205-2RSH/C3
BrandSKF
$19.40
Each
units
25mm 52mm Deep Groove 15mm Sealed - 1 7.8kN Steel - Steel - Plain 14.8kN
RS Stock No. 893-0230
Mfr. Part No.W6203-2RS1
BrandSKF
$56.42
Each
units
17mm 40mm Deep Groove 12mm Sealed - 1 4.75kN Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 8.06kN
RS Stock No. 884-1212
Mfr. Part No.AC686FZZK/4N/D
BrandBNL
$8.69
1 Bag of 2
Bag(s)
6mm 13mm Radial 5mm Keyway - 1 1.25kg Plastic Stainless Steel Acetal Acetal Flanged -
RS Stock No. 409-0013
Mfr. Part No.6000ZZ
BrandNSK
$18.59
Each
units
10mm 26mm Deep Groove 8mm Shielded - 1 1.97kN Steel - Steel - Plain 4.55kN
RS Stock No. 667-1005
Mfr. Part No.6004-2Z/C3
BrandSKF
$13.13
Each
units
20mm 42mm Deep Groove 12mm Shielded - 1 5kN Steel - Steel - Plain 9.95kN
RS Stock No. 285-0548
Mfr. Part No.61802-2RS1
BrandSKF
$23.77
Each
units
15mm 24mm Deep Groove 5mm Sealed - 1 800N Steel - Steel - Plain 1.56kN
RS Stock No. 619-0014
Mfr. Part No.626-2Z
BrandRS PRO
$4.60
Each
units
6mm 19mm Miniature 6mm Shielded - 1 896N Steel - - - Plain 2.336kN
RS Stock No. 285-1557
Mfr. Part No.7205 BEP
BrandSKF
$58.50
Each
units
25mm 52mm Angular Contact 15mm Open - 1 9.3kN Steel - Fibreglass Reinforced Nylon 66 - Plain 14.8kN
RS Stock No. 285-1181
Mfr. Part No.6309
BrandSKF
$57.95
Each
units
45mm 100mm Deep Groove 25mm Open - 1 31.5kN Steel - Steel - Plain 55.3kN
RS Stock No. 286-7849
Mfr. Part No.626-2Z
BrandSKF
$9.61
Each
units
6mm 19mm Deep Groove 6mm Shielded - 1 950N Steel Steel Steel Steel Plain 2.34kN
RS Stock No. 442-0054
Mfr. Part No.629-2RSH
BrandSKF
$10.65
Each
units
9mm 26mm Deep Groove 8mm Sealed - 1 1.96kN Steel - Steel - Plain 4.75kN