KOYO INFO

WHY SHOULD I CHOOSE KOYO BEARINGS?

JTEKT CORPORATION IS GLOBALLY CERTIFIED ACCORDING TO APPLICABLE STANDARDS FOR ALL OF ITS FACILITIES. CERTIFICATES INCLUDE: IATF 16949, ISO 14001, ISO 9001, ISO 50001, OHSAS 18001, AEO AND AS/JIS Q 9100
At JTEKT we are focused and committed to deliver our customers high quality products and solutions because they are at the core of everything we do. By combining technology with our design engineering expertise we are able to offer a breadth of advanced bearings and solutions which are well known under our Koyo branded bearings. Taking this into account we also have the strong commitment to protect the environment and society by developing and manufacturing products which are eco-friendly, energy saving and recyclable

WHERE CAN I FIND THE NEAREST KOYO DISTRIBUTOR?
Please click on this link to be re-directed to our “Distributor Network” area where you can find your nearest Koyo Distributor.

WHAT IS A KOYO SPHERICAL ROLLER BEARING?
Spherical roller bearings feature a large load rating and self-aligning capability. This type of bearing is suitable for low- or medium speed applications which involve heavy or impact loading. Spherical roller bearings are self-aligning, double-row, combination radial and thrust bearings. They use a spherical or crowned roller as the rolling element. The outer ring contains a spherical race which allows for some misalignment of the shaft and housing. Spherical roller bearings are unequalled in their capacity for high loads and tolerance to shock loads, but have limited speed capabilities. They perform consistently, even under conditions of extreme speed, application-specific stress, and marginal lubrication. The cage of a spherical roller bearing provides high dimensional accuracy and functionality. According to some estimates, spherical roller bearings have twice the running life of conventional bearings.

WHAT IS A KOYO THRUST BALL BEARING?
Thrust ball bearings are divided into single and double direction types. The former is able to accommodate axial load in one direction, while the latter is able to accommodate it in both directions. Neither is suitable for applications that involve radial load or high-speed rotation. This type of bearing is commonly used in automotive, aerospace and marine applications

 

Outline of koyo bearing selection
Currently, as bearing design has become diversified, their application range is being increasingly extended. In order to select the most suitable bearings for an application, it is necessary to onduct a comprehensive study on both bearings and the equipment in which the bearings will be installed, including operating conditions, the performance required of the bearings, specifications of the other components to be installed along with the bearings, marketability, and cost performance, etc.

In selecting bearings, since the shaft diameter is usually determined beforehand, the prospective bearing type is chosen based upon installation space, intended arrangement, and according to the bore diameter required.

In selecting bearings, since the shaft diameter is usually determined beforehand, the prospective bearing type is chosen based upon installation space, intended arrangement, and according to the bore diameter required.

Next, from the bearing specifications are determined the service life required when compared to that of the equipment in which it is used, along with a calculation of the actual service life from operational loads.

Internal specifications including bearing accuracy, internal clearance, cage, and lubricant are also selected, depending on the application.

WHERE ARE KOYO BEARINGS BEING PRODUCED?
JTEKT Corporation has 61 plants in total (steering products, driveline components, bearings and machine tools) located all over the world. For our Koyo bearings we have the following number of plants.

Japan: 5 plants
Asia & Oceania: 8 plants
Europe: 7 plants
North & South America: 1 plant

WHAT IS A KOYO BALL BEARING UNIT?
Ball bearing units consists of pre-lubricated sealed ball bearings and a housing which varies in shape. They are capable of aligning themselves efficiently using the spherical fitting surface between the bearing and housing, effectively preventing overloads due to misalignment

WHAT IS A KOYOTAPERED ROLLER BEARING?
A tapered roller bearing is a bearing in which tapered rollers (truncated conical rollers) are inserted between the cup (outer ring) and cone (inner ring). The rollers are guided by the cone back face rib.They have high radial and axial (thrust) load capacities at low to intermediate speeds. Taper roller bearings are available in single-row, two-row and four-row designs. With single-row bearings, the thrust load capacity is about 60% of the radial capacity. Double-row bearings have a greater radial load capacity and can handle thrust loads from both directions. The rollers can be configured so that the contact lines to the races converge or diverge towards the axis of rotation. Diverging double-row bearings increase the rigidity of the shaft mounting, but converging bearings do not. Other configurations for double-row bearings feature a single outer ring and two inner rings, or two outer rings and a single inner ring. Four-row tapered roller bearings consist of four rows of alternating converging and diverging rollers.

 

AT JTEKT WE MANUFACTURE A RANGE OF ADVANCED BEARING AND PRODUCTS FOR THE MARINE INDUSTRY.
Our products competitive edge means an improved performance, longer life and the capability to operate in a variety of marine environments.Experience and capabilitiesSplit housing, high speeds and limited amounts of lubrication are some of the major design requirements that JTEKT has overcome by successfully designing bearings for marine power head and drivetrain applications. JTEKT’s history as a supplier to this industry proves that tough environmental challenges can be overcome with creative engineering solutions at an economical price.


KOYO Bearings

A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts.

Mitsuboshi Belts

A belt is a loop of flexible material used to link two or more rotating shafts mechanically, most often parallel.

Oil-Seals

A Seal is a device that helps join systems or mechanisms together by preventing leakage.

Roller-Chain

is a way of transmitting mechanical power from one place to another.

Danzol Grease & Lubricants

Lubrication is simply the use of a material to improve the smoothness if movement of one surface over another

Sprockets

is a profiled wheel with teeth, cogs, or even sprockets that mesh with a chain, track or other perforated or indented material.

KSM Bearing-Units

A pillow block is a pedestal used to provide support for a rotating shaft with the help of compatible bearings & various accessories.

Fasteners

Strength of this fastener is derived from the compression of the plates, mounted above and below the belt, with high tensile strength bolts.