Model: 31J57

Ball Bearing Unit

Description:

0.4062 inches mounting slot width, 0.5625 inches mounting slot length, 1.0000 inches bore diameter, 4.0000 inches center to center distance between mounting holes along width.

Properties:

Mounting Slot Width

0.4062 inches

Mounting Slot Length

0.5625 inches

Bore Diameter

1.0000 inches

Base Thickness

0.3750 inches

Center To Center Distance Between Mounting Holes Along Width

4.0000 inches

Housing Height

2.6562 inches

Housing Width

5.0000 inches

Base Length

1.2500 inches

Rolling Element Groove Quantity

Alignment Type

Self-aligning

Internal Fit-up Designation

Standard

Assemblylength

1.2188 inches

Seal Type

Labyrinth

Block Type

Fixed

Shaft End Type

Open

Seal Location

Both ends

Load Capability Type

Radial and thrust

Height From Bottom Of Base To Bore Centerline

1.4375 inches

Features Provided

Ground rolling element groove

Rotating Element Locking Method

Direct

Mounting Hole Type

Slotted

Lubrication Material

Grease

Material

Iron malleable housing

Material

Steel bearing surface

Style Designator

Pillow block, solid

NSN

3130-00-055-1596

Part Number

31J57

Description

Bearing Unit,ball

CAGE

0MKW7

An assembled unit, composed of a housing incorporating a single or multiple row ball bearing(s), designed to meet various or specific conditions of mounting.

Part 31J57 NSN 3130-00-055-1596

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

30556

FIIG:

A093A0

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:

0.5000lbs

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: 8482991050
SITC: 74699
End Use: Industrial machines, other
NAICS: 332991
USDA: 1

Freight Class: Parts, except inner and outer races, for ball bearings, (including ball bearings with integral shafts)