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. 506-016
Mfr. Part No.6213-2Z/C3
BrandSKF
R 1,192.85
Each
units
65mm 120mm Deep Groove 23mm Shielded - 1 40.5kN Steel - Steel - Plain 58.5kN
RS stock no. 286-7473
Mfr. Part No.61802
BrandSKF
R 169.13
Each
units
15mm 24mm Deep Groove 5mm Open - 1 800N Steel - Steel - Plain 1.56kN
RS stock no. 286-7467
Mfr. Part No.61801
BrandSKF
R 133.34
Each
units
12mm 21mm Deep Groove 5mm Open - 1 670N Steel - Steel - Plain 1.43kN
RS stock no. 618-9878
Mfr. Part No.625-2RS
BrandRS PRO
R 23.64
Each
units
5mm 16mm Miniature 5mm Sealed - 1 675N Steel - - - Plain 1.729kN
RS stock no. 797-5229
Mfr. Part No.E2.6314-2Z/C3
BrandSKF
R 1,283.60
Each
units
70mm 150mm Deep Groove 35mm Shielded - 1 68kN Steel - - - Plain 104kN
RS stock no. 408-9861
Mfr. Part No.608
BrandNSK
R 58.62
Each
units
8mm 22mm Deep Groove 7mm Open - 1 1.37kN Steel - Steel - Plain 3.3kN
RS stock no. 619-0143
Mfr. Part No.6201-2RS
BrandRS PRO
R 43.01
Each
units
12mm 32mm Deep Groove 10mm Sealed - 1 3.1kN Steel - - - Plain 6.89kN
RS stock no. 138-641
Mfr. Part No.DDL-850ZZMTHA1P13LY121
BrandNMB
R 66.485
Each (In a Pack of 2)
units
5mm 8mm Radial 2.5mm Shielded - 1 130N Steel Martensitic Stainless Steel Metallic Crown Steel Martensitic Stainless Steel Plain 274N
RS stock no. 286-7502
Mfr. Part No.61805
BrandSKF
R 187.35
Each
units
25mm 37mm Deep Groove 7mm Open - 1 2.6kN Steel - Steel - Plain 4.36kN
RS stock no. 618-9890
Mfr. Part No.624-2Z
BrandRS PRO
R 25.10
Each
units
4mm 13mm Miniature 5mm Shielded - 1 488N Steel - - - Plain 1.301kN
RS stock no. 409-0906
Mfr. Part No.51107
BrandNSK
R 249.31
Each
units
35mm 52mm Thrust 12mm - - 1 48.5kN Steel - Steel - Plain 22.1kN
RS stock no. 505-978
Mfr. Part No.6218/C3
BrandSKF
R 2,040.17
Each
units
90mm 160mm Deep Groove 30mm Open - 1 73.5kN Steel - Steel - Plain 101kN
RS stock no. 893-0287
Mfr. Part No.W608-2RS1
BrandSKF
R 242.56
Each
units
8mm 22mm Deep Groove 7mm Sealed - 1 780N Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 1.99kN
RS stock no. 409-0489
Mfr. Part No.6204DDU
BrandNSK
R 115.58
Each
units
20mm 47mm Deep Groove 14mm Sealed - 1 606kN Steel - Steel - Plain 12.8kN
RS stock no. 540-277
Mfr. Part No.DDLF1150ZZRA5P24LY121
BrandNMB
R 111.33
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. 893-7240
Mfr. Part No.SS6000-2RS
BrandRS PRO
R 64.55
Each
units
10mm 26mm Deep Groove 8mm Sealed - 1 1.764kN Stainless Steel - - - Plain 4.095kN
RS stock no. 408-9726
Mfr. Part No.624ZZ
BrandNSK
R 63.70
Each
units
4mm 13mm Radial 5mm Shielded - 1 480N Steel - Steel - Plain 1.34kN
RS stock no. 764-3635
Mfr. Part No.6002ZZC3
BrandNSK
R 80.66
Each
units
15mm 32mm Deep Groove 9mm Shielded - 1 2.83kN Steel - Pressed Steel - Plain 5.6kN
RS stock no. 667-1119
Mfr. Part No.6306-2Z/C3
BrandSKF
R 235.61
Each
units
30mm 72mm Deep Groove 19mm Shielded - 1 16kN Steel - Steel - Plain 29.6kN
RS stock no. 408-9805
Mfr. Part No.607
BrandNSK
R 56.78
Each
units
7mm 19mm Deep Groove 6mm Open - 1 885N Steel - Steel - Plain 2.34kN