Model: 3TKR21-28U

Annular Ball Bearing

Properties:

Overall Width

0.2500 inches

Bore Diameter

1.3125 inches

Overall Outside Diameter

1.7500 inches

Lubrication Material

Lubricating oil

Surface Finish

Ground

Load Direction

Radial

Bore Shape

Straight

Standard Tolerance Designation

Abec no. 5t

Lubrication Material Specification

Mil-l-6085a military specification single material response

Material

Steel comp 440c

Style Designator

Non-loading groove, non-separable

Specification Data

40920-3tkr21-28u professional/industrial association specification

NSN

3110-01-347-0286

Part Number

3TKR21-28U

Description

Bearing,ball,annular

CAGE

40920

A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. For items with faces specially ground for duplex mounting see bearing, ball, duplex. Excludes bearing, ball, airframe.

Part 3TKR21-28U NSN 3110-01-347-0286

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

00014

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: 8482105028
SITC: 74610
End Use: Industrial machines, other
NAICS: 332991
USDA: 1

Freight Class: Angular contact ball bearings, nesoi