KWB28-17

View detailed technical data, stock status, and sourcing information for: KWB28-17
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-318-1727

Item Name Code

13208

Assigment Date

04/13/1990 (36 years ago)

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.

1.8070 inches minimum and 1.8120 inches maximum inner member width, 1.3120 inches minimum and 1.3220 inches maximum outer member width, 3.0390 inches minimum and 3.0400 inches maximum outer member outside diameter, 1.7492 inches minimum and 1.7500 inches maximum bore diameter, groove and perforation outer race member lubrication feature

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Bore Diameter: 1.7492 inches minimum and 1.7500 inches maximum
Outer Member Outside Diameter: 3.0390 inches minimum and 3.0400 inches maximum
Outer Member Width: 1.3120 inches minimum and 1.3220 inches maximum
Inner Member Width: 1.8070 inches minimum and 1.8120 inches maximum
Lubrication Feature: groove and perforation outer race member
Special Features: oversize o.d. version of kwb28-20sga; used on link pin gudgeon of the main landing gear of the c5 a/b
Material: oil lubricating lubrication
Material: steel comp 4130 outer race member
Material: steel comp e52100 inner member
Surface Treatment: cadmium outer race member
Surface Treatment Document And Classification: qq-p-416 fed spec single treatment response outer race member
Style Designator: without insert or liner with staking groove

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
KWB28-17	Self-Aligning Plain Bearing

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 3120-01-318-1727?

The FSCG of the NSN 3120-01-318-1727 is 3120

Does the NSN 3120-01-318-1727 have a Schedule B code assigned?

Yes, the Schedule B code is 8482300040

Does NSN 3120-01-318-1727 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 3120-01-318-1727 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-318-1727 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 3120-01-318-1727 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Fri, Apr 13, 1990