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庫存編號 619-0389
BrandRS PRO
HK$20.59
單位
17mm 35mm Deep Groove 10mm Shielded - 1 3.25kN Steel - - - Plain 1.05kN
RS庫存編號 285-1557
製造零件編號7205 BEP
BrandSKF
HK$189.76
單位
25mm 52mm Angular Contact 15mm Open - 1 9.3kN Steel - Fibreglass Reinforced Nylon 66 - Plain 14.8kN
全新
RS庫存編號 187-9508
製造零件編號7203-B-XL-TVP-UO
BrandFAG
HK$530.11
單位
17mm 40mm Angular Contact 12mm Open - 1 5700N Steel Steel Polyamide Steel Plain 10500N
RS庫存編號 137-1674
製造零件編號6208-C-2Z-C3
BrandFAG
HK$163.91
單位
40mm 80mm Deep Groove 18mm Double Shielded - 1 17800N Steel - Steel - Plain 31000N
RS庫存編號 764-3629
製造零件編號6001DDUC3
BrandNSK
HK$47.44
單位
12mm 28mm Deep Groove 8mm Sealed - 1 2.37kN Steel - Pressed Steel - Plain 5.1kN
RS庫存編號 619-0373
BrandRS PRO
HK$21.02
單位
17mm 40mm Deep Groove 12mm Shielded - 1 4.75kN Steel - - - Plain 9.56kN
RS庫存編號 174-0993
製造零件編號3203-BD-XL-2HRS-TVH
BrandFAG
HK$420.52
單位
17mm 40mm Angular Contact 17.5mm Sealed - 2 9500N - - - - Plain 15500N
RS庫存編號 619-0367
BrandRS PRO
HK$28.28
單位
17mm 26mm Deep Groove 5mm Shielded - 1 930N Steel - - - Plain 1.68kN
RS庫存編號 619-0351
BrandRS PRO
HK$34.75
單位
20mm 52mm Deep Groove 15mm Sealed - 1 7.8kN Steel - - - Plain 15.9kN