Model: MR56

Needle Roller Bearing

Properties:

Overall Width

2.0000 inches

Bore Diameter

3.5000 inches

Overall Outside Diameter

4.5000 inches

Surface Finish

Ground

Retainer Fabrication Method

Pressed

Alignment Type

Rigid

Standard Tolerance Designation

Afbma standard tolerance for industrial needle bearings

Material

Steel comp e52100

Material Specification

66 federal standard single material response

Special Test Features

Special quality control testing

Style Designator

Non-separable, with roller retainer, hardened and ground

Test Data Document

81349-mil-p-231999 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).

Reference Number Differentiating Characteristics

Material must conform to ships parts control center special quality control provisions

NSN

3110-00-172-7091

Part Number

MR56

Description

Bearing,roller,needle

CAGE

92563

A single or multiple-row antifriction bearing used with or without inner or outer races characterized by relatively small size rollers usually not ranging above 0.250 inch (6.35mm) diameter and generally longer in length in relation to diameter.

Part MR56 NSN 3110-00-172-7091

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

00051

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:

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: 8482400000
SITC: 74640
End Use: Industrial machines, other
NAICS: 332991
USDA: 1

Freight Class: Needle roller bearings