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 409-0439
製造零件編號6203ZZ
BrandNSK
HK$41.93
單位
17mm 40mm Deep Groove 12mm Shielded - 1 4.8kN Steel - Steel - Plain 9.55kN
RS庫存編號 540-384
製造零件編號DDRF830ZZRA5P24LY121
BrandNMB
HK$62.685
/個 (每包:2個)
單位
3mm 8mm Radial 4mm Shielded 9.5mm 1 176N Steel Martensitic Stainless Steel Metallic Ribbon Steel Martensitic Stainless Steel Flanged 553N
RS庫存編號 285-0576
製造零件編號61804-2RZ
BrandSKF
HK$121.16
單位
20mm 32mm Deep Groove 7mm Shielded - 1 2.32kN Steel - Steel - Plain 4.03kN
RS庫存編號 612-6136
製造零件編號609SSM3MTLY121
BrandNMB
HK$18.56
/個 (每包:2個)
單位
9mm 24mm - 7mm Shielded - - 1.368kN Steel - - - Plain 3.297kN
RS庫存編號 286-8044
製造零件編號6206
BrandSKF
HK$72.81
單位
30mm 62mm Deep Groove 16mm Open - 1 11.2kN Steel - Steel - Plain 20.3kN
RS庫存編號 408-8436
製造零件編號6304DDU
BrandNSK
HK$87.75
單位
20mm 52mm Deep Groove 15mm Sealed - 1 7.9kN Steel - Steel - Plain 15.9kN
RS庫存編號 409-0495
製造零件編號6205
BrandNSK
HK$63.71
單位
25mm 52mm Deep Groove 15mm Open - 1 7.85kN Steel - Steel - Plain 14kN
RS庫存編號 612-5739
製造零件編號DDR-830ZZRA1P25LY121
BrandNMB
HK$34.76
/個 (每包:2個)
單位
3mm 8mm Radial 4mm Shielded - 1 176N Steel Martensitic Stainless Steel Metallic Ribbon Steel Martensitic Stainless Steel Plain 553N
RS庫存編號 667-1116
製造零件編號6308-2Z/C3
BrandSKF
HK$247.50
單位
40mm 90mm Deep Groove 23mm Shielded - 1 24kN Steel - Steel - Plain 42.3kN
RS庫存編號 505-788
製造零件編號7307BEP
BrandSKF
HK$315.01
單位
35mm 80mm Angular Contact 21mm Open - 1 24.5kN Steel - Fibreglass Reinforced Nylon 66 - Plain 39kN
RS庫存編號 409-0798
製造零件編號3204BTNG
BrandNSK
HK$258.83
單位
20mm 47mm Angular Contact 20.6mm Open - 2 12.5kN Steel - Polyamide - Plain 19.6kN
RS庫存編號 667-1030
製造零件編號608-2Z/C3
BrandSKF
HK$38.57
單位
8mm 22mm Deep Groove 7mm Shielded - 1 1.37kN Steel - Steel - Plain 3.45kN
RS庫存編號 884-1200
製造零件編號AC686ZZ/4N/D
BrandBNL
HK$38.84
毎包:2 個
Bag(s)
6mm 13mm Radial 5mm Double Shielded - 1 1.25kg Plastic Stainless Steel Acetal Acetal Plain -
RS庫存編號 286-7855
製造零件編號627
BrandSKF
HK$32.94
單位
7mm 22mm Deep Groove 7mm Open - 1 1.37kN Steel - Steel - Plain 3.45kN
RS庫存編號 667-1068
製造零件編號6207-2Z/C3
BrandSKF
HK$121.95
單位
35mm 72mm Deep Groove 17mm Shielded - 1 15.3kN Steel - Steel - Plain 27kN
RS庫存編號 612-5745
製造零件編號DDL-730ZZHA1P25LY121
BrandNMB
HK$25.19
/個 (每包:2個)
單位
3mm 7mm Radial 3mm Shielded - 1 129N Steel Martensitic Stainless Steel Metallic Crown Steel Martensitic Stainless Steel Plain 384N
RS庫存編號 619-0036
BrandRS PRO
HK$14.45
單位
8mm 22mm Miniature 7mm Shielded - 1 1.379kN Steel - - - Plain 3.293kN
RS庫存編號 764-3714
製造零件編號6203ZZC3
BrandNSK
HK$43.33
單位
17mm 40mm Deep Groove 12mm Shielded - 1 4.8kN Steel - Pressed Steel - Plain 9.55kN
RS庫存編號 719-2046
製造零件編號E2.6203-2Z/C3
BrandSKF
HK$44.60
單位
17mm 40mm Deep Groove 12mm Shielded - 1 4.75kN Steel - Fibreglass Reinforced Composite Polymer - Plain 9.56kN
RS庫存編號 505-603
製造零件編號3307ATN9
BrandSKF
HK$650.00
單位
35mm 80mm Angular Contact 34.9mm Open - 2 35.5kN Steel - Fibreglass Reinforced Nylon 66 - Plain 52kN