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. 285-1147
Mfr. Part No.6308
BrandSKF
R 495.69
Each
units
40mm 90mm Deep Groove 23mm Open - 1 24kN Steel - Steel - Plain 42.3kN
RS stock no. 409-0041
Mfr. Part No.6001
BrandNSK
R 83.96
Each
units
12mm 28mm Deep Groove 8mm Open - 1 2.37kN Steel - Steel - Plain 5.1kN
RS stock no. 409-0085
Mfr. Part No.6002ZZ
BrandNSK
R 102.39
Each
units
15mm 32mm Deep Groove 9mm Shielded - 1 2.83kN Steel - Steel - Plain 5.6kN
RS stock no. 492-1945
Mfr. Part No.6300DD
BrandNSK
R 109.99
Each
units
10mm 35mm Deep Groove 11mm Sealed - 1 3.45kN Steel - Steel - Plain 8.1kN
RS stock no. 505-586
Mfr. Part No.3201 A-2RS1TN9/MT33
BrandSKF
R 652.86
Each
units
12mm 32mm Angular Contact 15.9mm Sealed - 2 5.6kN Steel - Fibreglass Reinforced Nylon 66 - Plain 10.1kN
RS stock no. 893-0209
Mfr. Part No.W6005-2RS1
BrandSKF
R 709.32
Each
units
25mm 47mm Deep Groove 12mm Sealed - 1 7.65kN Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 11.7kN
RS stock no. 764-3828
Mfr. Part No.6308ZZC3
BrandNSK
R 616.83
Each
units
40mm 90mm Deep Groove 23mm Shielded - 1 24kN Steel - Pressed Steel - Plain 40.5kN
RS stock no. 540-306
Mfr. Part No.DDLF-1360ZZMTRA5P24LY121
BrandNMB
R 157.11
Each (In a Pack of 2)
units
6mm 13mm Radial 5mm Shielded 15mm 1 438N Steel Martensitic Stainless Steel Metallic Ribbon Steel Martensitic Stainless Steel Flanged 1.083kN
RS stock no. 893-0325
Mfr. Part No.W61804-2RS1
BrandSKF
R 493.94
Each
units
20mm 32mm Deep Groove 7mm Sealed - 1 2.08kN Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 3.12kN
RS stock no. 612-5717
Mfr. Part No.DDL-310HA1P25LO1
BrandNMB
R 123.055
Each (In a Pack of 2)
units
1mm 3mm Radial 1mm Shielded - 1 23N Steel Martensitic Stainless Steel Metallic Crown Steel Martensitic Stainless Steel Plain 80N
RS stock no. 285-0756
Mfr. Part No.6007-2RS1
BrandSKF
R 227.66
Each
units
35mm 62mm Deep Groove 14mm Sealed - 1 10.2kN - - Steel - Plain 16.8kN
RS stock no. 764-3749
Mfr. Part No.6207ZZC3
BrandNSK
R 297.89
Each
units
35mm 72mm Deep Groove 17mm Shielded - 1 15.3kN Steel - Pressed Steel - Plain 25.7kN
RS stock no. 612-6063
Mfr. Part No.DDLF-1060ZZHA5P25LY121
BrandNMB
R 116.63
Each (In a Pack of 2)
units
6mm 10mm Radial 3mm Shielded 11.2mm 1 194N Steel Martensitic Stainless Steel Metallic Crown Steel Martensitic Stainless Steel Flanged 457N
RS stock no. 285-2285
Mfr. Part No.51210
BrandSKF
R 760.46
Each
units
50mm 78mm Thrust 22mm - - 1 116kN Steel Steel Pressed Steel - Plain 49kN
RS stock no. 409-0748
Mfr. Part No.3200BTNG
BrandNSK
R 471.72
Each
units
10mm 30mm Angular Contact 14mm Open - 2 4.55kN Steel - Polyamide - Plain 7.8kN
RS stock no. 408-9956
Mfr. Part No.629DD
BrandNSK
R 95.49
Each
units
9mm 26mm Deep Groove 8mm Sealed - 1 1.97kN Steel - Steel - Plain 4.55kN
RS stock no. 719-2083
Mfr. Part No.E2.6306-2Z/C3
BrandSKF
R 640.95
Each
units
30mm 72mm Deep Groove 19mm Shielded - 1 16kN Steel - Fibreglass Reinforced Composite Polymer - Plain 28.6kN
RS stock no. 409-0861
Mfr. Part No.51103
BrandNSK
R 202.57
Each
units
17mm 30mm Thrust 9mm - - 1 19.5kN Steel - Steel - Plain 11.4kN
RS stock no. 285-1153
Mfr. Part No.6308-2Z
BrandSKF
R 554.32
Each
units
40mm 90mm Deep Groove 23mm Shielded - 1 24kN Steel - Steel - Plain 42.3kN
RS stock no. 134-9102
Mfr. Part No.BSN4075DDUHP2BDT R BE4L5
BrandNSK
R 11,073.74
1 Pair
Pair(s)
40mm 75mm Angular Contact 68mm Sealed - 2 176kN Steel - - - Plain 68.5kN