Model: BR4D

Airframe Roller Bearing
Description:

0.2495 inches bore diameter, 0.9009 inches overall outside diameter, oil lubrication material, 0.4590 inches outer ring width, 0.6200 inches inner ring width.

Properties:

Bore Diameter
Between 0.2495 inches and 0.2500 inches
Overall Outside Diameter
Between 0.9009 inches and 0.9014 inches
Lubrication Material
Oil
Outer Ring Width
Between 0.4590 inches and 0.4640 inches
Inner Ring Width
Between 0.6200 inches and 0.6250 inches
Retainer Fabrication Method
Cast
Seal Quantity
2
Shield Quantity
2
Bearing Seal Type
Contact
Lubrication Material Specification
Mil-l-23699 military specification single material response
Material
Copper alloy retainer
Material
Rubber butadiene-acrylonitrile class nbr seal
Material
Steel comp e52100 inner ring
Material
Steel comp e52100 outer ring
Material
Steel comp e52100 roller
Material
Stainless steel shield
Material Specification
66 federal standard single material response roller
Material Specification
66 federal standard single material response inner ring
Material Specification
66 federal standard single material response outer ring
Surface Treatment
Cadmium all external/exposed metal surfaces
Surface Treatment Specification
Qq-p-416, type 1, cl 2 federal specification single treatment response all external/exposed metal surfaces
Style Designator
Concave rollers, double closure, self aligning
NSN
3110-00-079-8910
Part Number
BR4D
Description
Bearing,roller,airframe
CAGE
77896

A cylindrical item in which the inner or outer ring turns upon row(s) of hardened roller, bearing which roll on a raceway, thus minimizing friction. These items are characterized by their noncorrosive qualities, lightness of weight, inch dimensions rather than metric, inner rings generally projecting beyond the faces of the outer ring, or a very narrow width inner ring having an outside diameter slightly larger than the bore diameter. Designed primarily for use in aircraft assemblies, such as control systems and surfaces of aircraft. Excludes bearing, roller, cylindrical.

Part BR4D NSN 3110-00-079-8910

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00046
FIIG:
A044A0
Concept No.:
App. Key:
U
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
114820
UFC:
58860
LTL:
77.5
LCL:
77.5
WCC:
742
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8482800080
  • SITC: 74680
  • End Use: Industrial machines, other
  • NAICS: 332991
  • USDA: 1

Freight Class: Other ball or roller bearings, including combined ball/roller bearings, nesoi

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