Model: 621/612

Tapered Roller Bearing

Properties:

Overall Width

1.6250 inches

Bore Diameter

2.1250 inches

Overall Outside Diameter

4.7500 inches

Cubic Measure

864.000 cubic inches

Backface Corner Radius

0.0300 inches

Standout Width

0.3750 inches

Cone Corner Radius

0.1400 inches

Cone Width

1.6250 inches

Cup Width

1.2500 inches

Standard Tolerance Designation

Afbma class 2

Unpackaged Unit Weight

1.0 pounds

Material

Steel

Style Designator

Straight bore, normal angle

NSN

3110-01-178-8431

Part Number

621/612

Description

Bearing,roller,tapered

CAGE

60038

A cylindrical device in which the inner cone or outer cup turns upon a single or double row of tapered hardened rollers which roll easily in a race, thus minimizing friction and designed to carry a radial load and capable of sustaining axial thrust. Excludes bearing, roller, thrust.

Part 621/612 NSN 3110-01-178-8431

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

00021

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:

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Schedule B and Export

Schedule B: 8482200030
SITC: 74620
End Use: Industrial machines, other
NAICS: 332991
USDA: 1

Freight Class: Tapered roller bearings, cup and cone assemblies entered as a set, wheel hub units, other than flanged