TWN-20

TWN20 Ball Bearing Unit

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Datasheet. TWN-20 specification

Mounting Hole Diameter
The length of a straight line which passes through the center of a mounting hole,and terminates at the circumference.

0.2180in.

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

1.2500in.

Base Thickness
A measurement of the smallest dimension of a base,in distinction from length or width.

0.4400in.

Center To Center Distance Between Mounting Holes Along Width
A measurement of the center to center distance between the mounting holes along the width.

3.5000in.

Center To Center Distance Between Mounting Holes Along Length
A measurement of the center to center distance between the mounting holes along the length.

5.5000in.

Housing Height

2.8200in.

Housing Length
A measurement of the longest dimension of the housing,in distinction from width.

7.5000in.

Housing Width
A measurement taken at right angles to the length of a housing,in distinction from thickness.

4.0000in.

Lubrication Fitting Type
Indicates the type of fitting used to lubricate the item.

self lubricated

Base Length
A measurement of the longest dimension of the base,in distinction from width.

7.5000in.

Alignment Type
Indicates the type of alignment utilized whereby the item will adjust axially for misalignment.

SELF-Aligning

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

standard

Assembly Overall Length
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the assembly.

7.5000in.

Seal Type
Indicates the type of seal included with the item.

contact

Block Type
Indicates the type of block.

fixed

Shaft End Type
Indicates the type of shaft end provided.

open

Seal Location
Indicates the location of the seal.

both ends

Load Capability Type
Indicates the type of load capability.

radial and thrust

Height From Bottom Of Base To Bore Centerline

1.5000in.

Mounting Hole Type
Indicates the type of mounting hole(s) provided on the item.

round, unthreaded

Lubrication Material
The chemical compound or mechanical mixture properties with which the item is lubricated.

oil

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

aluminum alloy 6061 housing

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 bearing

Answers.

What quantity is this sold in?

1EA

What material is the ball bearing unit made of ?

Steel bearing

What material is the ball bearing unit made of ?

Rubber synthetic seal

What material is the ball bearing unit made of ?

Aluminum alloy 6061 housing

What is the NSN for TWN-20?

3130-01-145-8457

How is this classified for shipping?

Schedule B number: 8482991050
nmfc 114820
Parts, except inner and outer races, for ball bearings, (including ball bearings with integral shafts)

What's the federal classification of TWN-20?

FSC 3130 ⁓ Bearings, mounted

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 antifriction bearings (fsc 3110); plain unmounted bearings (fsc 3120).

NSN 3130-01-145-8457 BEARING UNIT,BALL

7.5000" housing length 1.2500" bore diameter

NIIN
011458457
NIIN Date
01/20/83
Schedule B
8482991050 
Name Code
30556
FIIG
A093A0
Item Weight
0.000lbs
Item Dimensions
--
QUP
Historical Price
$446.25 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
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. 11501102-1 Cage 18876

Major End Users Countries and entities

  • - Department of The Navy 

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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)
Unknown
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 bearing units with similar characteristics

Nothing similar to this part number was found in our inventory

TWN-20 / Bearing unit,ballWhat is the formal definition of this item?

An assembled unit, composed of a housing incorporating a single or multiple row ball bearing(s), designed to meet various or specific conditions of mounting.