MIL-B-17931

MILB17931 Ball Annular Bearing

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Quality Commitment

Serving our customers with quality and safety first.

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Datasheet. MIL-B-17931 specification

Overall Width
An overall measurement taken at right angles to the length of an item,in distinction from thickness.

0.4704in. and 0.4724in.

Bore Diameter
The length of a straight line which passes through the center of a circular bore,and terminates at the circumference.

0.6691in. and 0.6693in.

Overall Outside Diameter
The overall length of a straight line which passes through the center of an item,and terminates at the outside circumference.

1.5746in. and 1.5748in.

Lubrication Material
The element,compound,or mixture with which the item is lubricated.

grease

Surface Finish
An additional finishing process by which the surface of an item is altered in respect to polishing,grinding,and the like.

ground

Retainer Fabrication Method
The means used in manufacturing the retainer.

pressed

Load Direction
The direction of load with respect to the shaft axis.

radial

Bore Shape
The physical configuration of the bore.

straight

Internal Fit-up Designation
The designation specifying the type of fit as recognized by industrial and governmental agencies.

tight

Internal Clearance
The clearance between the bearing rings and the rolling elements.

0.0004in. radial and 0.0008in. radial

Criticality Code Justification
The master requirement codes of those requirements which are technically critical by reason of tolerance,fit,performance,or other characteristics which affect identification of the item.

zzzw

Lubrication Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the lubrication material.

MIL-G-18709 mil spec single material response

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

rubber synthetic seal

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp E52100 ball

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp E52100 inner ring

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp E52100 loading groove side

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel retainer

Style Designator
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

NON-Loading groove, NON-Separable

Nondefinitive Spec/std Data
The number,letter,or symbol that indicates the type,style,grade,class,and the like,of an item in a nonidentifying specification or standard.

111 type and 8 class

Departure From Cited Document
The technical differentiating characteristic/s/ of an item of supply which depart/s/ from the text of a specification or a standard in that it represents a selection of characteristics stated in the specification or standard as being optional,or a variation from one or more of the stated characteristics,or an additional characteristic not stated in the specification or standard.

quiet operation tested for submarine use

Departure From Cited Designator
The variation when the item is in conformity with a type designator covered by a specification or standard,except in regard to one or more technical differentiating characteristics.

as modified by test for quiet operation applicable to submarine usage

Answers.

What quantity is this sold in?

1EA

What is the style?

Non-loading groove, non-separable

What material is the ball annular bearing made of ?

Steel retainer

What material is the ball annular bearing made of ?

Steel comp e52100 loading groove side

What material is the ball annular bearing made of ?

Steel comp e52100 inner ring

What material is the ball annular bearing made of ?

Steel comp e52100 ball

What material is the ball annular bearing made of ?

Rubber synthetic seal

What is the overall width?

0.4704 inches minimum and 0.4724 inches maximum

What is the NSN for MIL-B-17931?

3110-00-991-0903

How is this classified for shipping?

Schedule B number: 8482105028
nmfc 114820
Angular contact ball bearings

What's the federal classification of MIL-B-17931?

FSC 3110 ⁓ Bearings, antifriction, unmounted

Note-this class includes bearings that generally have roller or balls confined by an inner and outer ring to relieve friction in/on/around rotating/moving mechanisms.

Excluding plain bearings (fsc 3120); jewel bearings (fsc 3120)

NSN 3110-00-991-0903 BEARING,BALL,ANNULAR

non-loading groove, non-separable 0.6691" bore diameter 0.4704" overall width

NIIN
009910903
NIIN Date
01/01/62
Schedule B
8482105028 
Name Code
00014
FIIG
A044A0
Item Weight
0.600lbs
Item Dimensions
30 X 30 X 15
QUP
Historical Price
$2,350.00 EA
DEMIL / ITAR
USML/ITAR controlled item (Code: D)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
No precious metals
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Other Part Numbers Parts with same form, fit, and function by other manufacturers

1. MIL-B-17931NT Cage 03950
2. 92D1001ITEM5,6 Cage 57368
3. 20227 ITEM 32 Cage 82974
4. 20227 ITEM 32NT3 Cage 82974
5. SSN578S3806H771405 PC12 Cage 80064
6. 203SZZNT3 Cage 38443
7. 99503-7077 Cage 43334
8. 6203-2RSW1B Cage 52676
9. 6203DDUE100 Cage 53035
10. 92D1001ITEM5,6NT Cage 03950
11. 2650-1145PC20 Cage 95402
12. M203PP-FS50135 Cage 21335
13. 203FF3VB Cage 71244
14. 99203-4ES100NT Cage 29337
15. 30030 ITEM 34 Cage 82974
16. 6203LLBPM/3W Cage 23803
17. 203ZNT3 Cage 38443
18. 3N-354 PC 41 Cage 54370
19. 3N-355 PC 41 Cage 54370
20. 30182 ITEM 1 Cage 82971
21. M17931-G010 Cage 21335
22. M17931-G010 Cage 70854

Major End Users Countries and entities

  • - Department of The Navy 
  • - Spain 
  • - United Kingdom 
  • - Turkey 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
77.5 
LCL (less than a car load rating)
77.5
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing 
Commodity (for shipments via water)
Bearings 
NMFC (national motor freight code)
114820 BEARINGS/BUSHINGS NOI BALL/ROLLER 
UFC (universal freight code)
58860 

Similar by Design Other bearings with similar characteristics

Nothing similar to this part number was found in our inventory

MIL-B-17931 / Bearing,ball,annularWhat is the formal definition of this item?

A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. for items with faces specially ground for duplex mounting see bearing, ball, duplex. excludes bearing, ball, airframe.