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NTN 6217LLUC3 Deep Groove Ball Bearings , D=85 Supply

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NTN 6217LLUC3 Deep Groove Ball Bearings , D=85

 

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SPECIFICATIONS

Type of Product :

Deep Groove Ball Bearing

Model No :

6217LLUC3

Width :

28 mm

Inner Diameter :

85 mm

 

 

 

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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

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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

Title

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