Model: NP31

Ball Bearing Unit

Properties:

Mounting Slot Width

0.6875 inches

Mounting Slot Length

0.8750 inches

Bore Diameter

1.9375 inches

Base Thickness

0.7500 inches

Center To Center Distance Between Mounting Holes Along Width

6.2500 inches

Housing Height

4.5625 inches

Housing Width

8.1250 inches

Lubrication Fitting Type

Hydraulic

Base Length

2.3750 inches

Rolling Element Groove Quantity

Alignment Type

Self-aligning

Internal Fit-up Designation

Standard

Assemblylength

2.3750 inches

Seal Type

Labyrinth

Block Type

Fixed

Shaft End Type

Open

Seal Location

Both ends

Load Capability Type

Radial

Height From Bottom Of Base To Bore Centerline

2.2500 inches

Features Provided

Ground rolling element groove

Lubrication Fitting Angle From Horizontal Centerline

90.0 degrees

Rotating Element Locking Method

Direct

Mounting Hole Type

Slotted

Lubrication Material

Grease

Material

Iron cast housing

Material

Steel seal and wool seal

Style Designator

Pillow block, solid

NSN

3130-00-227-2103

Part Number

NP31

Description

Bearing Unit,ball

CAGE

57448

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 NP31 NSN 3130-00-227-2103

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:

6.4000lbs

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)