Model: 7178-1

Duplex Ball Bearing

Special Features:

0.0000 to 0.0010 in. Space between inner ring faces under 50 lb load, etch v on bore and od to indicate proper installation position

Properties:

Overall Width
Between 0.6100 inches and 0.6250 inches
Bore Diameter
Between 6.4990 inches and 6.5000 inches
Overall Outside Diameter
Between 7.1238 inches and 7.1250 inches
Surface Finish
Ground
Retainer Fabrication Method
Pressed
Load Direction
Angular
Bearing Preload Rating
50.0 pounds
Material
Steel ball
Material
Stainless steel retainer
Material
Steel inner ring
Material
Steel outer ring
Special Test Features
Special quality control testing
Style Designator
92b counterbored outer rings, non-separable, back to back mounting
Style Designator
Counterbored outer rings, non-separable, back to back mounting
Test Data Document
81349-mil-p-23199 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.).
NSN
3110-00-175-2549
Part Number
7178-1
Description
Bearing,ball,duplex
CAGE
32828

Two single row annular ball bearings selected dimensionally to be a matched pair or set. The ring faces have been specially ground to specified offsets that will produce predetermined preload when mounted. May include a single row angular contact bearing with faces specially ground for duplex mounting.

Part 7178-1 NSN 3110-00-175-2549

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
30213
FIIG:
A044A0
Concept No.:
App. Key:
E
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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:
A
SPI No.:
SPI Rev.:
SPC Mkg:
ZZ
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
114820
UFC:
58860
LTL:
77.5
LCL:
--
WCC:
742
TCC:
Z
SHC:
9
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

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