Model: B55557

Bearing Ball

Special Features:

Metallic hardness rating rockwell c min 58.0 in. And max 65.0 in.

Properties:

Rolling Element Diameter

0.3125 inches

Standard Tolerance Designation

Afbma standard tolerance for balls, grade 25

Material

Steel comp 440a or steel comp 440b or steel comp 440c

Material Specification

Aisi assn standard all material responses

Style Designator

Ball

NSN

3110-00-555-6574

Part Number

B55557

Description

Ball,bearing

CAGE

88907

A homogenous spherical body, a series of which provides the rolling elements in a bearing, ball (as modified). The item is designed primarily to alleviate friction. It may have other usages such as the checking component in a ball-type check valve. Excludes ball, check; ball, valve, ported.

Part B55557 NSN 3110-00-555-6574

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

00036

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:

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