High quality NTN bearing , other industrial equipment also available

• Made in Japan
• High quality
• Extensive inventory

|||| Product Description ||||

1 Rolling bearing construction
Most rolling bearings consist of rings with raceway (inner ring and outer ring),

rolling elements (either balls or rollers) and cage.

The cage separates the rolling elements at regular intervals, holds them in place

within the inner and outer raceways, and allows them to rotate freely.

Raceway (inner ring and outer ring) or raceway washer1

The surface on which rolling elements roll is called the "raceway surface".
The load placed on the bearing is supported by this contact surface.
Generally the inner ring fits on the axle or shaft and the outer ring on the housing.
Note 1: The raceway of thrust bearing is called "raceway washer,"

the inner ring is called the "shaft raceway washer"

and the outer ring is called the "housing raceway washer."

Rolling elements
Rolling elements classify in two types: balls and rollers.
Rollers come in four types: cylindrical, needle, tapered, and spherical.
Balls geometrically contact with the raceway surfaces of the inner

and outer rings at "points", while the contact surface of rollers is a "line" contact.
Theoretically, rolling bearings are so constructed as to allow the rolling elements

to rotate orbitally while also rotating on their own axes at the same time.

Cages
Cages function to maintain rolling elements at a uniform pitch so load

is never applied directly to the cage and to prevent the rolling elements

from falling out when handling the bearing.

Types of cages differ according to way they are manufactured,

and include pressed, machined and formed cages.


2 Classification of rolling bearings
Rolling bearings divide into two main classifications:
ball bearings and roller bearings.

Ball bearings are classified according to their bearing ring configurations:

deep groove type and angular contact type.

Roller bearings on the other hand are classified according to the shape

of the rollers: cylindrical, needle, tapered and spherical.
Rolling bearings can be further classified according to the direction

in which the load is applied; radial bearings carry radial loads

and thrust bearings carry axial loads.

Other classification methods include:
1) number of rolling rows (single, double, or 4-row),
2) separable and non-separable, in which either the inner ring

or the outer ring can be detached.
There are also bearings designed for special applications,

such as: railway car journal roller bearings, ball screw support bearings,

turntable bearings, as well as linear motion bearings

(linear ball bearings, linear roller bearings and linear flat roller bearings).

|||| Company Information ||||

About Daiki Sangyo Co., Ltd.
Daiki Sangyo Co., Ltd. was founded in 1939 as a specialist dealer

in industrial equipment.
Since then, we have continued to advance along

with Japan's world-class manufacturing culture.
We mainly deal in industrial machinery components such as transmission equipment,

and we have over 60 years of history in the business with a strong sales track record.
Currently, we have 15 branches in Japan, and we have a vast inventory of products

at our distribution warehouses sourced from the manufacturers.
As an industrial equipment solutions company, we hope to continue

to provide high quality Japanese products not only in Japan, but also worldwide.