KSB20-4D

Comprehensive specifications and application details for: KSB20-4D Self-Aligning Plain Bearing.

Summary

Explore detailed summary information for bearing: KSB20-4D. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number
KSB20-4D
Federal Supply Classification
3120 Unmounted Plain Bearings
(NSN) National Stock Number
3120-01-347-9978
Item Name Code
13208
Federal Item Identification Guide
A045A0
Assigment Date
11/03/1991

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.

55.0 rockwell c minimum inner member hardness rating, ams 5630 assn std single material response inner member material document and classification, 28.0 rockwell c minimum outer race member hardness rating, 1.0910 inches minimum and 1.0930 inches maximum inner member width, 1.2495 inches minimum and 1.2500 inches maximum bore diameter

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-01-347-9978 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bore Diameter
1.2495 inches minimum and 1.2500 inches maximum
Hardness Rating
55.0 rockwell c minimum inner member
Hardness Rating
28.0 rockwell c minimum outer race member
Inner Member Width
1.0910 inches minimum and 1.0930 inches maximum
Material Document And Classification
ams 5630 assn std single material response inner member
Material Document And Classification
ams 5643 assn std single material response outer race member
Material Document And Classification
karon,cagec 50632 mfr ref single material response race liner
Material
plastic polytetrafluoroethylene race liner
Material
steel comp 440c inner member
Material
steel comp 630 outer race member
Outer Member Outside Diameter
1.9995 inches minimum and 2.0000 inches maximum
Outer Member Width
0.9370 inches minimum and 0.9470 inches maximum
Static Radial Load Rating
108000 pounds
Style Designator
with insert and/or liner with staking groove

Frequently Asked Questions

Find quick answers to common questions about bearing: KSB20-4D. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-01-347-9978?
The FSCG of the NSN 3120-01-347-9978 is 3120
Does the NSN 3120-01-347-9978 have a Schedule B code assigned?
Yes, the Schedule B code is 8482300040
Does NSN 3120-01-347-9978 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 3120-01-347-9978 contain precious materials?
Item does not contain precious metal.
Does NSN 3120-01-347-9978 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 3120-01-347-9978 was assigned to the Federal Catalog?
It was assigned 33 years ago, on Sun, Nov 3, 1991

Price & Availability

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