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. 286-7899
Mfr. Part No.629-2Z
BrandSKF
R 67.65
Each
units
9mm 26mm Deep Groove 8mm Shielded - 1 1.96kN - - Steel - Plain 4.75kN
RS stock no. 286-8274
Mfr. Part No.6310
BrandSKF
R 580.45
Each
units
50mm 110mm Deep Groove 27mm Open - 1 38kN Steel - Steel - Plain 65kN
RS stock no. 612-5745
Mfr. Part No.DDL-730ZZHA1P25LY121
BrandNMB
R 55.545
Each (In a Pack of 2)
units
3mm 7mm Radial 3mm Shielded - 1 129N Steel Martensitic Stainless Steel Metallic Crown Steel Martensitic Stainless Steel Plain 384N
RS stock no. 286-7580
Mfr. Part No.6001-2Z
BrandSKF
R 76.62
Each
units
12mm 28mm Deep Groove 8mm Shielded - 1 2.36kN Steel - Steel - Plain 5.4kN
RS stock no. 667-1055
Mfr. Part No.6205-2Z/C3
BrandSKF
R 121.64
Each
units
25mm 52mm Deep Groove 15mm Shielded - 1 7.8kN Steel - Steel - Plain 14.8kN
RS stock no. 285-2213
Mfr. Part No.51204
BrandSKF
R 275.01
Each
units
20mm 40mm Thrust 14mm - - 1 41kN Steel Steel Pressed Steel - Plain 23kN
RS stock no. 441-9975
Mfr. Part No.6001-2RSH
BrandSKF
R 112.09
Each
units
12mm 28mm Deep Groove 8mm Sealed - 1 2.36kN Steel Steel Steel Steel Plain 5.4kN
RS stock no. 619-0042
Mfr. Part No.627-2Z
BrandRS PRO
R 33.92
Each
units
7mm 22mm Miniature 7mm Shielded - 1 1.379kN Steel - - - Plain 3.287kN
RS stock no. 286-8088
Mfr. Part No.6208
BrandSKF
R 312.68
Each
units
40mm 80mm Deep Groove 18mm Open - 1 19kN Steel - Steel - Plain 32.5kN
RS stock no. 286-7546
Mfr. Part No.608-2Z
BrandSKF
R 63.61
Each
units
8mm 22mm Deep Groove 7mm Shielded - 1 1.37kN Steel Steel Steel Steel Plain 3.45kN
RS stock no. 286-8460
Mfr. Part No.51100
BrandSKF
R 222.97
Each
units
10mm 24mm Thrust 9mm - - 1 15kN Steel Steel Pressed Steel - Plain 10kN
RS stock no. 285-0497
Mfr. Part No.61800-2Z
BrandSKF
R 155.77
Each
units
10mm 19mm Deep Groove 5mm Shielded - 1 590N Steel - Steel - Plain 1.38kN
RS stock no. 506-400
Mfr. Part No.51205
BrandSKF
R 277.03
Each
units
25mm 47mm Thrust 15mm - - 1 55kN Steel Steel Pressed Steel - Plain 28kN
RS stock no. 409-0237
Mfr. Part No.6007
BrandNSK
R 206.57
Each
units
35mm 62mm Deep Groove 14mm Open - 1 10.3kN Steel - Steel - Plain 16kN
RS stock no. 618-9913
Mfr. Part No.626-2RS
BrandRS PRO
R 35.54
Each
units
6mm 19mm Miniature 6mm Sealed - 1 896N Steel - - - Plain 2.336kN
RS stock no. 408-9899
Mfr. Part No.608DD
BrandNSK
R 73.02
Each
units
8mm 22mm Deep Groove 7mm Sealed - 1 1.37kN Steel - Steel - Plain 3.3kN
RS stock no. 619-0014
Mfr. Part No.626-2Z
BrandRS PRO
R 32.74
Each
units
6mm 19mm Miniature 6mm Shielded - 1 896N Steel - - - Plain 2.336kN
RS stock no. 286-7849
Mfr. Part No.626-2Z
BrandSKF
R 63.04
Each
units
6mm 19mm Deep Groove 6mm Shielded - 1 950N Steel Steel Steel Steel Plain 2.34kN
RS stock no. 884-1216
Mfr. Part No.AC688ZZ/4N/D
BrandBNL
R 79.97
1 Bag of 2
Bag(s)
8mm 16mm Radial 5mm Double Shielded - 1 2.5kg Plastic Stainless Steel Acetal Acetal Plain -
RS stock no. 492-2112
Mfr. Part No.6802ZZ
BrandNSK
R 161.20
Each
units
15mm 24mm Deep Groove 5mm Shielded - 1 1.26kN Steel - Steel - Plain 2.07kN