Model: MIL-B-17931NT

Duplex Ball Bearing

Properties:

Overall Width

Between 1.9665 inches and 1.9685 inches

Bore Diameter

Between 1.7715 inches and 1.7717 inches

Overall Outside Diameter

Between 3.9368 inches and 3.9370 inches

Lubrication Material

Grease

Surface Finish

Ground

Retainer Fabrication Method

Pressed

Load Direction

Angular

Internal Fit-up Designation

Standard

Criticality Code Justification

Zzzw

Lubrication Material Specification

Mil-g-18709 military specification single material response

Material

Steel

Style Designator

92b counterbored outer rings, non-separable, back to back mounting

Nondefinitive Specification/std Data

134 type and 1 class

Departure From Cited Document

Annual ball bearing for quiet operation application to submarine usage

NSN

3110-00-976-9738

Part Number

MIL-B-17931NT

Description

Bearing,ball,duplex

CAGE

03950

Two single row annular ball bearings selected dimensionally to be a matched pair or set. The ring faces have been specially ground to specified offsets that will produce predetermined preload when mounted. May include a single row angular contact bearing with faces specially ground for duplex mounting.

Part MIL-B-17931NT NSN 3110-00-976-9738

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

30213

FIIG:

A044A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

5.0000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

114820

UFC:

58860

LTL:

77.5

LCL:

77.5

WCC:

742

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8482105068
SITC: 74610
End Use: Industrial machines, other
NAICS: 332991
USDA: 1

Freight Class: Ball bearings, nesoi