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. 286-7833
Mfr. Part No.626
BrandSKF
HK$24.26
Each
units
6mm 19mm Deep Groove 6mm Open - 1 950N Steel - Steel - Plain 2.34kN
RS Stock No. 893-7275
Mfr. Part No.SS6004-2RS
BrandRS PRO
HK$69.26
Each
units
20mm 42mm Deep Groove 12mm Sealed - 1 4.545kN Stainless Steel - - - Plain 8.46kN
RS Stock No. 285-0964
Mfr. Part No.6207-2RS1
BrandSKF
HK$128.93
Each
units
35mm 72mm Deep Groove 17mm Sealed - 1 15.3kN Steel - Steel - Plain 27kN
RS Stock No. 286-7855
Mfr. Part No.627
BrandSKF
HK$35.81
Each
units
7mm 22mm Deep Groove 7mm Open - 1 1.37kN Steel - Steel - Plain 3.45kN
RS Stock No. 619-0323
Mfr. Part No.6804-2RS
BrandRS PRO
HK$41.03
Each
units
20mm 32mm Deep Groove 7mm Sealed - 1 1.5kN Steel - - - Plain 2.7kN
RS Stock No. 408-9849
Mfr. Part No.627ZZ
BrandNSK
HK$38.67
Each
units
7mm 22mm Deep Groove 7mm Shielded - 1 1.37kN Steel - Steel - Plain 3.3kN
RS Stock No. 285-0790
Mfr. Part No.623
BrandSKF
HK$32.26
Each
units
3mm 10mm Deep Groove 4mm Open - 1 180N - - Steel - Plain 540N
RS Stock No. 893-0283
Mfr. Part No.W607-2RS1
BrandSKF
HK$87.78
Each
units
7mm 19mm Deep Groove 6mm Sealed - 1 585N Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 1.53kN
RS Stock No. 893-0347
Mfr. Part No.W61904-2RS1
BrandSKF
HK$247.90
Each
units
20mm 37mm Deep Groove 9mm Sealed - 1 3.65kN Stainless Steel Stainless Steel Stainless Steel Stainless Steel Plain 5.53kN
RS Stock No. 619-0525
Mfr. Part No.6207-2RS
BrandRS PRO
HK$77.45
Each
units
35mm 72mm Deep Groove 17mm Sealed - 1 15.3kN Steel - - - Plain 25.5kN
RS Stock No. 505-603
Mfr. Part No.3307ATN9
BrandSKF
HK$632.35
Each
units
35mm 80mm Angular Contact 34.9mm Open - 2 35.5kN Steel - Fibreglass Reinforced Nylon 66 - Plain 52kN
RS Stock No. 286-7883
Mfr. Part No.629
BrandSKF
HK$37.64
Each
units
9mm 26mm Deep Groove 8mm Open - 1 1.96kN Steel - Steel - Plain 4.75kN
RS Stock No. 506-006
Mfr. Part No.6313/C3
BrandSKF
HK$899.42
Each
units
65mm 140mm Deep Groove 33mm Open - 1 60kN Steel - Steel - Plain 97.5kN
RS Stock No. 409-0057
Mfr. Part No.6001ZZ
BrandNSK
HK$48.39
Each
units
12mm 28mm Deep Groove 8mm Shielded - 1 2.37kN Steel - Steel - Plain 5.1kN
RS Stock No. 286-8050
Mfr. Part No.6206-2Z
BrandSKF
HK$98.67
Each
units
30mm 62mm Deep Groove 16mm Shielded - 1 11.2kN Steel - Steel - Plain 20.3kN
RS Stock No. 540-306
Mfr. Part No.DDLF-1360ZZMTRA5P24LY121
BrandNMB
HK$79.61
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. 492-2099
Mfr. Part No.6800ZZ
BrandNSK
HK$101.63
Each
units
10mm 19mm Deep Groove 5mm Shielded - 1 840N Steel - Steel - Plain 1.72kN
RS Stock No. 612-6041
Mfr. Part No.DDLF-740ZZHA1P25LY121
BrandNMB
HK$48.565
Each (In a Pack of 2)
units
4mm 7mm Radial 2.5mm Shielded 8.2mm 1 106N Steel Martensitic Stainless Steel Metallic Crown Steel Martensitic Stainless Steel Flanged 250N
RS Stock No. 747-670
Mfr. Part No.DDRI-814ZZMTRA5P24LY121
BrandNMB
HK$45.755
Each (In a Pack of 2)
units
6.35mm 12.7mm Radial 4.77mm Shielded - 1 374N Steel Martensitic Stainless Steel Metallic Ribbon Steel Martensitic Stainless Steel Plain 828N
RS Stock No. 667-1021
Mfr. Part No.607-2Z/C3
BrandSKF
HK$37.98
Each
units
7mm 19mm Deep Groove 6mm Shielded - 1 950N Steel - Steel - Plain 2.34kN
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