Model: KWB4-21

Self-aligning Plain Bearing

Special Features:

Operating temperature to 900 degrees f

Properties:

Bore Diameter

Between 0.2495 inches and 0.2500 inches

Outer Member Outside Diameter

Between 0.6245 inches and 0.6250 inches

Outer Member Width

Between 0.3220 inches and 0.3320 inches

Inner Member Width

Between 0.4320 inches and 0.4370 inches

Static Radial Load Rating

15600 pounds

Material

Steel comp 440c inner member

Material

Stainless steel outer race member

Surface Treatment

Chromium inner member

Style Designator

Without insert or liner with staking groove

NSN

3120-00-508-7054

Part Number

KWB4-21

Description

Bearing,plain,self-aligning

CAGE

97613

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.

Part KWB4-21 NSN 3120-00-508-7054

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

13208

FIIG:

A045A0

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:

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:

WCC:

742

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8482300040
SITC: 74630
End Use: Industrial machines, other
NAICS: 332991
USDA: 1

Freight Class: Spherical roller bearings, single row