Model: 740840

Cylindrical Roller Bearing

Special Features:

Cage silver plate per ams 2412 .001-.002 thick on land surf and roller pockets. Bake at 475-500 f for 2hours to check for bond. Rollers and ringsmust be stabilized for min distortion at 600 f

Properties:

Overall Width
Between 0.5856 inches and 0.5906 inches
Bore Diameter
Between 0.9841 inches and 0.9843 inches
Overall Outside Diameter
Between 2.0469 inches and 2.0472 inches
End Application
J75 engine
Surface Finish
Unground
Bore Shape
Straight
Locating Feature
Nonlocating
Standard Tolerance Designation
Rbec no.5
Material
Steel comp 4340 separator
Material
Steel inner ring
Material
Steel outer ring
Material
Steel roller
Material Specification
Pwa-725, 97497 mfr ref 1st material response outer ring
Material Specification
Pwa-725, 97497 mfr ref 2nd material response inner ring
Material Specification
Pwa-725, 97497 mfr ref 3rd material response roller
Style Designator
252h single row, two-direction locating, two lip inner ring, two lip outer ring, separable
NSN
3110-01-089-0688
Part Number
740840
Description
Bearing,roller,cylindrical
CAGE
77445

A nonadjustable roller bearing consisting of a single or multiple-row of hardened cylindrical rollers and a retainer used with or without inner or oute r rings. Excludes bearing, roller, airframe.

Part 740840 NSN 3110-01-089-0688

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00015
FIIG:
A044A0
Concept No.:
App. Key:
L
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:
RT
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:
Y
ACC:
Equipment for Aircraft

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Schedule B and Export
  • Schedule B: 8482500000
  • SITC: 74650
  • End Use: Industrial machines, other
  • NAICS: 332991
  • USDA: 1

Freight Class: Other cylindrical roller bearings

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