Model: 1221E31

Inner Bearing Ring

Properties:

Overall Width

0.9920 inches

Bore Diameter

0.9370 inches

Overall Outside Diameter

1.2480 inches

Surface Finish

Ground

Bore Shape

Straight

Standard Tolerance Designation

Afbma standard tolerances for journal bearings

Material

Steel

Style Designator

Solid inner race, journal and needle

NSN

3110-00-183-9756

Part Number

1221E31

Description

Ring,bearing,inner

CAGE

78500

The inner component of a ball or roller bearing which provides a contact surface for the rolling elements of an antifriction bearing.

Part 1221E31 NSN 3110-00-183-9756

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

00028

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:

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: 8482991010
SITC: 74699
End Use: Industrial machines, other
NAICS: 332991
USDA: 1

Freight Class: Inner and outer races for ball bearings (including ball bearings with integral shafts)