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bearings - Search Results

Related Companies

KISSsoft USA LLC
The KISSsoft calculation program has been developed to focus on the needs of mechanical engineers and power transmission profes

McInnes Rolled Rings
McInnes Rolled Rings manufactures seamless rolled ring forgings from 4" - 144" OD. Offering quick quotes and fast, reliable deliveries. ISO9001 & AS9100 Certified.

Rotek Incorporated
Provider of rolled ring forgings in a variety of material grades and sizes. Capability to roll rings 20 to 240 inches. ISO 9001, 14001 and 18001 certified. ABS Certified.

Stresstech Oy
Stresstech provides products and services for process control and quality inspection of gears, camshafts,crankshafts, bearings, valves, etc. Applications for monitoring various manufacturing processes, such as grinding, super finishing, shot peening, heat treatment, case depth after case hardening, etc. Turnkey solutions, instruments and measurement services based on Barkhausen Noise (BN), X-ray Diffraction (XRD) and hole-drilling for studying residual stresses, retained austenite contents, grinding burns, heat treat defects, and hardness changes, welding stresses, etc. Applications for the automotive, machine and aerospace industries.

C & B Machinery

Related Power Transmission Categories

Air Bearings
Angular Contact Ball Bearings
Ball Bearings
Bearings
Bush Bearings
Ceramic Ball Bearings
Cylindrical Roller Bearings
Hydrodynamic Bearings
Journal Bearings
Linear Bearings
Magnetic Bearings
Miniature Ball Bearings
Needle Roller Bearings
Plain Bearings
Sintered Bearings
Spherical Bearings
Spherical Roller Bearings
Spindle Bearings
Split Roller Bearings
Tapered Roller Bearings
Thin-Section Bearings
Thrust Bearings

Related Power Transmission Companies

C&U Americas, LLC
C&U Bearings are used by some of the world’s leading manufacturers and service providers in a wide variety of applications. Every C&U Bearing is made to exacting standards to deliver the ultimate in the precision, performance, and quality.

IDC-USA
IDC-USA is a cooperative partnering with independent distributors to improve the MRO solutions in their communities. Many IDC Distributors are 2nd and 3rd generation in their business and well respected in the industry. With more than 280 IDC Distributor locations across the United States, IDC Distributors help their customers stay up and running by providing the right product and expertise when they need it.

Lafert North America
Your best source for metric motors, gearboxes and coolant pumps, by providing quality products with the highest level of service in the industry.

Luoyang SBI Special Bearing Co. Ltd.
With highly advanced technology, Luoyang SBI Special Bearing Co., Ltd. has been dedicated to providing a wide variety of bearing solutions for industries all around the world since its establishment in 1989.

NSK Corporation
NSK is a global manufacturer of bearings and other motion & control products. It operates 51 manufacturing facilities worldwide and 12 global technology centers of excellence that draw from world-leading industry knowledge and manufacturing experience. NSK's dedication to engineering innovation results in state-of-the-art products designed to improve performance and extend service life. NSK's unique Asset Improvement Program helps customers improve productivity and efficiency to significantly reduce operating costs. The company’s industry and process-specific expertise and solutions are applied to identify and solve problems that are limiting productivity. This enables customers to achieve improved performance, enhanced competitiveness and increased profitability.

QA1 Precision Products
QA1 designs, manufactures and distributes rod ends, spherical bearings, performance shock absorbers, struts, springs, and related items. QA1 engineers products that are utilized in a wide variety of industries such as performance racing, off-road recreational vehicles, fitness equipment, packaging equipment, etc. We are also very experienced in value-added global sourcing for our large OEM customers – we routinely supply major companies with forged, cast, fabricated or machined suspension and driveline components. QA1’s quality system is certified to the ISO 9001:2008 standard.

Rotek
Rotek Incorporated, a ThyssenKrupp company and member of the ThyssenKrupp Rothe Erde group, is the North American leading manufacturer of slewing bearings (including ball and roller slewing bearings and wire-race slewing bearings). Furthermore, Rotek is a market leader for seamless forged steel and non-ferrous metal rings. Throughout the world, Rotek slewing bearings and forged rings are installed in a wide variety of applications. Rotek slewing bearings and forged rings prove every day to be important structural and connection elements used in mechanical engineering, in harbor cranes, ship deck cranes, truck cranes and construction cranes as well as in excavators, antenna systems, in aviation and aerospace, in the offshore technology, rail vehicles, telescopes, tunneling machines, wind energy turbines, underwater turbines and solar energy plants. ISO 9001, 14001 and 18001 certified. ABS certified.

Schaeffler Group USA, Inc
Schaeffler North America is responsible for the engineering, production, sales and marketing for the INA, LuK, FAG and Barden brands throughout the United States, Canada, Mexico, Central America and the Caribbean. All four brands provide high-performance, precision technologies for the Automotive OEM, Industrial OEM and Distribution markets as well as the Aerospace industry. INA is a leading supplier of rolling bearings, linear motion, engine components, plain bearings and precision components. LuK is a key source for automotive clutch, torque converter, hydraulic and transmission systems. FAG is a major global supplier of bearings with core competencies in ball, taper, cylindrical and spherical bearing products. The Barden Corporation focuses on high precision, miniature and aerospace products.

Articles About bearings


1 Comparing Surface Failure Modes in Bearings and Gears: Appearances vs. Mechanisms (July/August 1992)

In the 1960's and early 1970's, considerable work was done to identify the various modes of damage that ended the lives of rolling element bearings. A simple summary of all the damage modes that could lead to failure is given in Table 1. In bearing applications that have insufficient or improper lubricant, or have contaminants (water, solid particles) or poor sealing, failure, such as excessive wear or vibration or corrosion, may occur, rather than contact fatigue. Usually other components in the overall system besides bearings also suffer. Over the years, builders of transmissions, axles, and gear boxes that comprise such systems have understood the need to improve the operating environment within such units, so that some system life improvements have taken place.

2 Analysis of Load Distribution in Planet Gear Bearings (September 2011)

In epicyclic gear sets designed for aeronautical applications, planet gears are generally supported by spherical roller bearings with the bearing outer race integral to the gear hub. This article presents a new method to compute roller load distribution in such bearings where the outer ring can’t be considered rigid.

3 Bearings Education - A Lot to Learn (June/July 2013)

Bearings ain't beanbag. They are complicated. They are big-business. They are often counterfeited. They are used in virtually anything that moves. But it is the "complicated" part that challenges OEMs, job shops and other operations, and, most of all, their employees. Add to that the countless other entities around the world that are intimately involved with bearings and you can arrive at a semblance of an idea of just how important these precious orbs can be to a successful operation.

4 Morphology of Micropitting (November/December 2012)

Understanding the morphology of micropitting is critical in determining the root cause of failure. Examples of micropitting in gears and rolling-element bearings are presented to illustrate morphological variations that can occur in practice.

5 How Bearing Design Improves Gearbox Performance (September 2012)

Gearbox performance, reliability, total cost of ownership (energy cost), overall impact on the environment, and anticipation of additional future regulations are top-of-mind issues in the industry. Optimization of the bearing set can significantly improve gearbox performance.

6 Misalignment No Beauty in Gearsets (May/June 1991)

When we have problems with gearset failure, a common diagnosis is misalignment. What exactly is that and how do we prevent it? The second most common "killer" of good gear sets is misalignment (dirt, or abrasive wear, is first). Gear teeth simply won't carry the load if they don't touch, and the portion that does touch has to carry an overload to make up for the missing contact area.

7 NASA Gets Down and Dirty for SARJ Solution (September/October 2008)

For more than 10 months, NASA ground engineers and International Space Station (ISS) astronauts have been struggling with a perplexing malfunction of one of the station’s two solar array rotary joints (SARJ).

8 Tooth Contact Shift in Loaded Spiral Bevel Gears (November/December 1992)

An analytical method is presented to predict the shifts of the contact ellipses on spiral bevel gear teeth under load. The contact ellipse shift is the motion of the point to its location under load. The shifts are due to the elastic motions of the gear and pinion supporting shafts and bearings. The calculations include the elastic deflections of the gear shafts and the deflections of the four shaft bearings. The method assumes that the surface curvature of each tooth is constant near the unloaded pitch point. Results from these calculations will help designers reduce transmission weight without seriously reducing transmission performance.

9 Mechanical Behavior and Microstructure of Ausrolled Surfaces in Gear Steels (March/April 1995)

Ausforming, the plastic deformation of heat treatment steels in their metastable, austentic condition, was shown several decades ago to lead to quenched and tempered steels that were harder, tougher and more durable under fatigue-type loading than conventionally heat-treated steels. To circumvent the large forces required to ausform entire components such as gears, cams and bearings, the ausforming process imparts added mechanical strength and durability only to those contact surfaces that are critically loaded. The ausrolling process, as utilized for finishing the loaded surfaces of machine elements, imparts high quality surface texture and geometry control. The near-net-shape geometry and surface topography of the machine elements must be controlled to be compatible with the network dimensional finish and the rolling die design requirements (Ref. 1).

10 Effects of Planetary Gear Ratio on Mean Service Life (July/August 1998)

Planetary gear transmissions are compact, high-power speed reducers that use parallel load paths. The range of possible reduction ratios is bounded from below and above by limits on the relative size of the planet gears. For a single-plane transmission, the planet gear has no size of the sun and ring. Which ratio is best for a planetary reduction can be resolved by studying a series of optimal designs. In this series, each design is obtained by maximizing the service life for a planetary transmission with a fixed size, gear ratio, input speed, power and materials. The planetary gear reduction service life is modeled as a function of the two-parameter Weibull distributed service lives of the bearings and gears in the reduction. Planet bearing life strongly influences the optimal reduction lives, which point to an optimal planetary reduction ratio in the neighborhood of four to five.

11 How to Minimize Power Losses in Transmissions, Axles and Steering Systems (September 2012)

By increasing the number of gears and the transmission-ratio spread, the engine will run with better fuel efficiency and without loss of driving dynamics. Transmission efficiency itself can be improved by: using fuelefficient transmission oil; optimizing the lubrication systems and pumps; improving shifting strategies and optimizing gearings; and optimizing bearings and seals/gaskets.

12 Maximum Life Spiral Bevel Reduction Design (September/October 1993)

Optimization is applied to the design of a spiral bevel gear reduction for maximum life at a given size. A modified feasible directions search algorithm permits a wide variety of inequality constraints and exact design requirements to be met with low sensitivity to initial values. Gear tooth bending strength and minimum contact ration under load are included in the active constraints. The optimal design of the spiral bevel gear reduction includes the selection of bearing and shaft proportions in addition to gear mesh parameters. System life is maximized subject to a fixed back-cone distance of the spiral bevel gear set for a specified speed ratio, shaft angle, input torque and power. Significant parameters in the design are the spiral angle, the pressure angle, the numbers of teeth on the pinion and gear and the location and size of the four support bearings. Interpolated polynomials expand the discrete bearing properties and proportions into continuous variables for gradient optimization. After finding the continuous optimum, a designer can analyze near-optimal designs for comparison and selection. Design examples show the influence of the bearing lives on the gear parameters in the optimal configurations. For a fixed back-cone distance, optimal designs with larger shaft angles have larger service lives.

13 Design of Oil-Lubricated Machine Components for Life and Reliability (November/December 2007)

This article summarizes the use of laboratory fatigue data for bearings and gears coupled with probabilistic life prediction and EHD theories to predict the life and reliability of a commercial turboprop gearbox.

14 KISSsoft Update Integrates Parasolid CAD Core (May 2010)

The machine element package by KISSsoft for the design and optimization of components like gears, shafts, bearings and others is now available in the new version 04/2010.

15 Longitudinal Load Distribution Factor for Straddle- and Overhang-Mounted Spur Gears (July/August 1987)

A pair of spur gears generally has an effective lead error which is caused, not only by manufacturing and assembling errors, but also by the deformations of shafts, bearings and housings due to the transmitted load. The longitudinal load distribution on a contact line of the teeth of the gears is not uniform because of the effective lead error.

16 Finishing of Gears by Ausforming (November/December 1987)

Almost all machines or mechanical systems contain precision contact elements such as bearings, cams, rears, shafts, splines and rollers. These components have two important common requirements: first, they must possess sufficient mechanical properties, such as, high hardness, fatigue strength and wear resistance to maximize their performance and life; second, they must be finished to close dimensional tolerances to minimize noise, vibration and fatigue loading.

News Items About bearings

1 SKF’s New Cylindrical Roller Bearings Extend Wind Turbine Gearbox Life (April 11, 2006)
New SKF high-capacity cylindrical roller bearings for wind turbine gearboxes have been engineered to promote longer gearbox service life... Read News

2 NSK Introduces New Bearings (April 13, 2005)
[photo] NSK's new BGR Series of super precision angular contact bearings combines the benefits of SHX heat and seizure resistant stee... Read News

3 SKF’s New Ball Bearings Reduce Noise in Air Handling Applications (April 15, 2006)
SKF? ConCentra ball bearing units for high-speed air handling applications integrate unique concentric locking technology to form a near ... Read News

4 Steinmeyer Introduces New Ball Bearings (January 9, 2007)
Steinmeyer Inc. announced an addition to its standard line of miniature precision screws ? the "world's smallest commercially availab... Read News

5 GH Gear/Raceway Hardening Machine Handles Large Bearings More Productively (April 24, 2008)
GH Induction Group recently shipped a new design gear/raceway hardening machine capable of hardening gears and bearing raceways up to 3... Read News

6 2010 Metal Powder Testing and Bearings Standards Released (January 5, 2010)
The 2010 editions of Standard Test Methods for Metal Powders and Powder Metallurgy (PM) Products, and Standard 35, Materials Standards fo... Read News