NTN Deep Groove Ball Bearings, Single Row Radial Ball Bearings, 16021

Description



Item # d D B r Static Load Rating Dynamic Load Rating
16021 4.1339 in
105.000 mm		 6.2992 in
160.000 mm		 0.7087 in
18.000 mm		 0.0394 in
1.000 mm		 11350 lbf
50500 N
50.50 kN		 12920 lbf
57500 N
57.50 kN





1. Design features and characteristics

Deep groove ball bearings are very widely used. A deep groove is formed on the inner and outer ring of the bearing enabling the bearing to sustain radial and axial loads in either direction as well as the complex loads which result from the combination of these forces. Deep groove ball bearings are suitable for high speed applications. When two or more deep groove ball bearings are used in combination and mounted adjacent to each other a duplex set (D2) should be used. Duplex bearings (D2) utilize controlled tolerances to more evenly distribute the loading between the individual bearing rows which improves the overall performance of the assembly. In addition to unsealed and unlubricated “open” bearings, NTN provides deep groove ball bearings that are pre-lubricated with grease and enclosed by seals or shields. See section “11. Lubrication” for a list of some of the greases which can be used. Table 1 shows the construction and special characteristics of various sealed deep groove ball bearings. 

Types and codes N Shielded type Shielded type
Non-contact type ZZ Non-contact type LLB Contact type LLU Low torque type LLH
Construction
Metal shield plate is affixed to the outside ring; the inner ring incorporates a V-groove and labyrinth clearance. The outer ring incorporates synthetic rubber molded to a steel plate; seal edge is aligned with V-groove along inner ring surface with labyrinth clearance The outer ring incorporates synthetic rubber molded to a steel plate; seal edge contacts V-groove along inner ring surface Basic construction is the same as LLU type, but a specially designed lip on the edge of the seal prevents foreign matter penetration; low torque construction.
Torque Small Small Higher Medium
Dust proofing Good Better than ZZ-type Excellent Much better than LLB-type
Water proofing Poor Poor Very good Good
High speed capacity Same as open type Same as open type Limited by contact seals Much better than LLU-type
Allowable temp. range Depends on lubricant −25 to 120°C −25 to 110°C −25 to 120°C

Product form

Item # d D B r Static Load Rating Dynamic Load Rating 16021 4.1339 in 105.000 mm 6.2992 in 160.000... Read more

SKU: 16021

$58.76 Excl. VAT

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      Description



      Item # d D B r Static Load Rating Dynamic Load Rating
      16021 4.1339 in
      105.000 mm      		 6.2992 in
      160.000 mm      		 0.7087 in
      18.000 mm      		 0.0394 in
      1.000 mm      		 11350 lbf
      50500 N
      50.50 kN      		 12920 lbf
      57500 N
      57.50 kN





      1. Design features and characteristics

      Deep groove ball bearings are very widely used. A deep groove is formed on the inner and outer ring of the bearing enabling the bearing to sustain radial and axial loads in either direction as well as the complex loads which result from the combination of these forces. Deep groove ball bearings are suitable for high speed applications. When two or more deep groove ball bearings are used in combination and mounted adjacent to each other a duplex set (D2) should be used. Duplex bearings (D2) utilize controlled tolerances to more evenly distribute the loading between the individual bearing rows which improves the overall performance of the assembly. In addition to unsealed and unlubricated “open” bearings, NTN provides deep groove ball bearings that are pre-lubricated with grease and enclosed by seals or shields. See section “11. Lubrication” for a list of some of the greases which can be used. Table 1 shows the construction and special characteristics of various sealed deep groove ball bearings. 

      Types and codes N Shielded type Shielded type
      Non-contact type ZZ Non-contact type LLB Contact type LLU Low torque type LLH
      Construction
      Metal shield plate is affixed to the outside ring; the inner ring incorporates a V-groove and labyrinth clearance. The outer ring incorporates synthetic rubber molded to a steel plate; seal edge is aligned with V-groove along inner ring surface with labyrinth clearance The outer ring incorporates synthetic rubber molded to a steel plate; seal edge contacts V-groove along inner ring surface Basic construction is the same as LLU type, but a specially designed lip on the edge of the seal prevents foreign matter penetration; low torque construction.
      Torque Small Small Higher Medium
      Dust proofing Good Better than ZZ-type Excellent Much better than LLB-type
      Water proofing Poor Poor Very good Good
      High speed capacity Same as open type Same as open type Limited by contact seals Much better than LLU-type
      Allowable temp. range Depends on lubricant −25 to 120°C −25 to 110°C −25 to 120°C

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      NTN Deep Groove Ball Bearings, Single Row Radial Ball Bearings, 16021

      NTN Deep Groove Ball Bearings, Single Row Radial Ball Bearings, 16021

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