KR4-CNB

Comprehensive specifications and application details for: KR4-CNB Self-Aligning Plain Bearing.

Summary

Explore detailed summary information for bearing: KR4-CNB. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number
KR4-CNB
Federal Supply Classification
3120 Unmounted Plain Bearings
(NSN) National Stock Number
3120-00-851-5704
Item Name Code
13208
Federal Item Identification Guide
A045A0
Assigment Date
01/16/1967

A detachable assembly in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. The item consists of a bored precision ground ball (or spherical plain bearing) around which an outer ring is fitted. The assembly may be either separable or nonseparable. Excludes:bearing, plain, rod end and bearing, plain, spherical.

58.0 rockwell c nominal inner member hardness rating, 0.2495 inches minimum and 0.2500 inches maximum bore diameter, 0.3410 inches minimum and 0.3430 inches maximum inner member width, 28.0 rockwell c nominal outer race member hardness rating, 369a7951-7,02731 mfr ref single material response race liner material document and classification

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-851-5704 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bore Diameter
0.2495 inches minimum and 0.2500 inches maximum
Hardness Rating
58.0 rockwell c nominal inner member
Hardness Rating
28.0 rockwell c nominal outer race member
Inner Member Width
0.3410 inches minimum and 0.3430 inches maximum
Material Document And Classification
369a7951-7,02731 mfr ref single material response race liner
Material Document And Classification
fed-std 66 fed std single material response inner member
Material Document And Classification
fed-std 66 fed std single material response outer race member
Material
plastic tetrafluoroethylene race liner
Material
steel inner member
Material
steel outer race member
Outer Member Outside Diameter
0.6557 inches minimum and 0.6562 inches maximum
Outer Member Width
0.2450 inches minimum and 0.2550 inches maximum
Special Features
12 deg self-alignment in either direction
Static Radial Load Rating
7200 pounds
Style Designator
with insert and/or liner
Surface Treatment Document And Classification
369a7951-7,02731 mfr ref single treatment response inner member
Surface Treatment
chromium inner member

Replaces

The NSN 3120-00-851-5704 is used in place of the following discontinued or alternate items:

NSN Name Date
3120-00-686-5933 No Name Available 10/01/1979
3120-00-904-6998 No Name Available 05/01/1977

Frequently Asked Questions

Find quick answers to common questions about bearing: KR4-CNB. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-851-5704?
The FSCG of the NSN 3120-00-851-5704 is 3120
Does the NSN 3120-00-851-5704 have a Schedule B code assigned?
Yes, the Schedule B code is 8482300040
Does NSN 3120-00-851-5704 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 3120-00-851-5704 contain precious materials?
Item does not contain precious metal.
Does NSN 3120-00-851-5704 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 3120-00-851-5704 was assigned to the Federal Catalog?
It was assigned 58 years ago, on Mon, Jan 16, 1967

Price & Availability

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