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.

Types of Ball Bearings

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
  • 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.


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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. 667-1055
Mfr. Part No.6205-2Z/C3
BrandSKF
kr 80,35
Each
Units
25mm 52mm Deep Groove 15mm Shielded - 1 7.8kN Steel - Steel - Plain 14.8kN
RS Stock No. 618-9913
Mfr. Part No.626-2RS
BrandRS PRO
kr 23,10
Each
Units
6mm 19mm Miniature 6mm Sealed - 1 896N Steel - - - Plain 2.336kN
RS Stock No. 540-277
Mfr. Part No.DDLF1150ZZRA5P24LY121
BrandNMB
kr 76,045
Each (In a Pack of 2)
Units
5mm 11mm Radial 5mm Shielded 12.5mm 1 276N Steel Martensitic Stainless Steel Metallic Ribbon Steel Martensitic Stainless Steel Flanged 714N
RS Stock No. 286-7546
Mfr. Part No.608-2Z
BrandSKF
kr 44,84
Each
Units
8mm 22mm Deep Groove 7mm Shielded - 1 1.37kN Steel Steel Steel Steel Plain 3.45kN
RS Stock No. 442-0105
Mfr. Part No.6205-2RSH
BrandSKF
kr 86,96
Each
Units
25mm 52mm Deep Groove 15mm Sealed - 1 7.8kN Steel - Steel - Plain 14.8kN
RS Stock No. 667-1061
Mfr. Part No.6208-2Z/C3
BrandSKF
kr 187,14
Each
Units
40mm 80mm Deep Groove 18mm Shielded - 1 19kN Steel - Steel - Plain 32.5kN
RS Stock No. 408-9899
Mfr. Part No.608DD
BrandNSK
kr 48,29
Each
Units
8mm 22mm Deep Groove 7mm Sealed - 1 1.37kN Steel - Steel - Plain 3.3kN
RS Stock No. 612-6035
Mfr. Part No.DDLF-940ZZMTRA5P24LY121
BrandNMB
kr 35,96
Each (In a Pack of 2)
Units
4mm 9mm Radial 4mm Shielded 10.3mm 1 226N Steel Martensitic Stainless Steel Metallic Ribbon Steel Martensitic Stainless Steel Flanged 641N
RS Stock No. 409-0552
Mfr. Part No.6207
BrandNSK
kr 111,33
Each
Units
35mm 72mm Deep Groove 17mm Open - 1 15.3kN Steel - Steel - Plain 25.7kN
RS Stock No. 667-1197
Mfr. Part No.6205-2RSH/C3
BrandSKF
kr 91,37
Each
Units
25mm 52mm Deep Groove 15mm Sealed - 1 7.8kN Steel - Steel - Plain 14.8kN
RS Stock No. 667-1241
Mfr. Part No.6307-2RS1/C3
BrandSKF
kr 229,39
Each
Units
35mm 80mm Deep Groove 21mm Sealed - 1 19kN Steel - Steel - Plain 35.1kN
RS Stock No. 619-0468
Mfr. Part No.6205-2RS
BrandRS PRO
kr 49,12
Each
Units
25mm 52mm Deep Groove 15mm Sealed - 1 7.8kN Steel - - - Plain 14kN
RS Stock No. 618-9957
Mfr. Part No.608-2RS
BrandRS PRO
kr 23,10
Each
Units
8mm 22mm Miniature 7mm Sealed - 1 1.379kN Steel - - - Plain 3.293kN
RS Stock No. 286-7990
Mfr. Part No.6204
BrandSKF
kr 60,26
Each
Units
20mm 47mm Deep Groove 14mm Open - 1 6.55kN Steel - Steel - Plain 13.5kN
RS Stock No. 667-1052
Mfr. Part No.6204-2Z/C3
BrandSKF
kr 68,69
Each
Units
20mm 47mm Deep Groove 14mm Shielded - 1 6.55kN Steel - Steel - Plain 13.5kN
RS Stock No. 408-9782
Mfr. Part No.626ZZ
BrandNSK
kr 43,54
Each
Units
6mm 19mm Deep Groove 6mm Shielded - 1 885N Steel - Steel - Plain 2.34kN
RS Stock No. 408-9883
Mfr. Part No.608ZZ
BrandNSK
kr 43,65
Each
Units
8mm 22mm Deep Groove 7mm Shielded - 1 1.37kN Steel - Steel - Plain 3.3kN
RS Stock No. 505-580
Mfr. Part No.3202A-2RS1TN9/MT33
BrandSKF
kr 381,41
Each
Units
15mm 35mm Angular Contact 15.9mm Sealed - 2 6.8kN Steel - Fibreglass Reinforced Nylon 66 - Plain 11.2kN
RS Stock No. 612-5751
Mfr. Part No.DDL-740ZZHA3P25LY121
BrandNMB
kr 31,785
Each (In a Pack of 2)
Units
4mm 7mm Radial 2.5mm Shielded - 1 106N Steel Martensitic Stainless Steel Metallic Crown Steel Martensitic Stainless Steel Plain 250N
RS Stock No. 442-0098
Mfr. Part No.6204-2RSH
BrandSKF
kr 75,69
Each
Units
20mm 47mm Deep Groove 14mm Sealed - 1 6.55kN Steel - Steel - Plain 13.5kN
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