Model: NMBKSP4A-525

Airframe Ball Bearing

Special Features:

8 degrees self alignment in either direction, 40 to 50 pct full of specified lube, 0.0230 in. Max end play, 0.0004 in. Max radial clearance

Properties:

Bore Diameter
Between 0.2498 inches and 0.2500 inches
Overall Outside Diameter
Between 0.7445 inches and 0.7500 inches
Lubrication Material
Grease
Outer Ring Width
0.2190 inches
Inner Ring Width
Between 0.2760 inches and 0.2810 inches
Seal Quantity
2
Bearing Seal Type
Contact
Alignment Type
Self-aligning
Load Direction
Radial
Self-alignment Location
Internal
Lubrication Material Specification
Mil-g-23827 military specification single material response
Material
Steel ball
Material
Rubber synthetic seal
Material
Steel inner ring
Material
Steel outer ring
Surface Treatment
Cadmium all external/exposed metal surfaces
Style Designator
Single row self aligning single row inner ring extended both sides
NSN
3110-00-915-4776
Part Number
NMBKSP4A-525
Description
Bearing,ball,airframe
CAGE
50294

A cylindrical item in which the inner or outer ring turns upon row(s) of hardened ball, 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, ball, annular.

Part NMBKSP4A-525 NSN 3110-00-915-4776

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00041
FIIG:
A044A0
Concept No.:
App. Key:
B
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:
M
SPI No.:
SPI Rev.:
SPC Mkg:
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061130
UFC:
34350
LTL:
77.5
LCL:
--
WCC:
743
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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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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