Model: MKSP4

Airframe Ball Bearing

Special Features:

100pct full of specified lubricant, radial play 0.0002 in. To 0.0005 in., 10 degrees sefl-aljgnment in either direction

Properties:

Bore Diameter
0.2500 inches
Overall Outside Diameter
0.9014 inches
Lubrication Material
Grease
Outer Ring Width
0.3350 inches
Inner Ring Width
0.4840 inches
Seal Quantity
2
Bearing Seal Type
Contact
Alignment Type
Self-aligning
Load Direction
Radial
Self-alignment Location
Internal
Standard Tolerance Designation
Afbma standard tolerance for airframe ball bearings
Lubrication Material Specification
Mil-g-81322 military specification single material response
Material
Plastic polytetrafluoroethylene seal
Material
Steel comp e52100 ball
Material
Steel comp e52100 inner ring
Material
Steel comp e52100 outer ring
Surface Treatment
Cadmium all external/exposed metal surfaces
Style Designator
Single row self aligning single row inner ring extended both sides
NSN
3110-00-316-7977
Part Number
MKSP4
Description
Bearing,ball,airframe
CAGE
21335

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 MKSP4 NSN 3110-00-316-7977

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
51
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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