Archive for the ‘Thrust bearings’ Category

Prevent Thrust Bearing Failure

Friday, July 29th, 2016

Needless to say, construction sites can be highly dangerous areas.  This is the reason why individuals are forced to complete various training courses before utilizing machinery; as well as wear specific safety equipment when using the items.

If an individual does not have the correct knowledge required to operate devices effectively, the chances are great that an accident may occur and severe injuries could be suffered by all in the general area.

Here we are going to look at the difficulties presented when experiencing a problem with an engine’s crankshaft thrust bearing.  I will also provide information on how to deal with thrust bearing failure and how to prevent it.

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What Are Thrust Bearings Used For?

Friday, January 15th, 2016

Thrust bearings are a type of rolling-element bearing. Although they permit rotation between parts similar to other bearings, thrust bearings are primarily designed to support an axial load.

A thrust bearing helps reduce friction and deal with stress while enabling rotational or linear movement between various parts in automobiles and other machinery.

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Thrust Bearing Applications

Friday, March 13th, 2015

The thrust bearing is a type of rolling element bearing. Like other rolling bearings, they allow for rotation between parts, but are specifically designed to support an axial (rather than radial) load.

Generally, thrust bearings are composed of two washers, or raceways. And as opposed to roller thrust bearings, ball thrust bearings generally operate at higher speeds while accommodating lower loads. Also keep in mind that higher speed applications will require oil lubrication.

Thrust bearings varieties:

  • Thrust ball bearings – Composed of ball bearings supported inside a ring. These can be used in lower thrust applications, where the axial load is small. Barstools and lazy susan turntables use this type of bearing.
  • Cylindrical thrust roller bearings – Made up of small cylindrical rollers that are arranged flat with their axes pointing to the axis of the bearing. They give very good carrying capacity, and are generally cost effective, although they tend to wear due to the differences in radial speed and friction since it is higher than with ball bearings.
  • Tapered roller thrust bearings – Composed of small tapered rollers arranged so that their axes all converge at one point on the bearing’s axis. The length of the roller and the diameter and angle of rollers must be carefully calculated to provide the correct taper. This is so that each end of the roller rolls smoothly without skidding. They can support rather larger thrust loads than the ball type due to the larger contact area, but are typically more expensive to manufacture.
  • Spherical roller thrust bearings – These use asymmetrical rollers spherical in shape, rolling inside a house washer with a raceway that is a spherical inner shape. They can accommodate combined radial and axial loads and also accommodate misalignment of the shafts. These bearings also offer the highest load rating density of all thrust bearings.
  • Fluid bearings – Characterized by the axial thrust that is supported on a thin layer of pressurized liquid giving these a low drag.
  • Magnetic bearings – Characterized by the axial thrust supported on a magnetic field. This is used where very high speeds or very low drag is needed.

Thrust bearings are commonly used in automotive, marine, and aerospace applications. They are also used in the main and tail rotor blade grips of radio controlled helicopters.

How Bearings Are made

Thursday, January 12th, 2012

BEARINGS, HOW THEY ARE MADE
I saw this video this morning and thought it would a good way to start the new year of 2012.  It was interesting to watch, and very informative.

Hope you enjoy it.

Bearings Incorporated is hosting the KTV again …

Friday, September 16th, 2011

Koyo will be stopping by with it’s KTV on September 28th from 9:00 am to 1:00 pm, and open to Bearings Incorporated past, present and future customers.

Koyo brochure 2011

Here is the printable brochure, and we hope to see you there!!

Koyo Needle Roller – Bearing types and cages

Thursday, June 30th, 2011

Needle Roller Bearings

Needle roller bearings are an economical alternative for applications requiring minimal space to carry a given load at a desired speed. Needle roller bearings can be an ideal choice because of their ability to handle a given level of speed and load capacity, yet have the smallest cross section of all roller bearing types.

We offer both inch and metric nominal bearings in popular designs such as: drawn cups, radial caged needle rollers, machined ring, track rollers, thrust bearings, combined bearings, and drawn cup roller clutches. Most of these bearing types can be operated directly on a machined shaft of suitable quality, or with a matching inner ring where this requirement cannot be conventionally satisfied.

Radial Needle Roller and Cage Assemblies

Radial needle roller and cage assemblies have a steel cage that provides both inward and outward retention for the needle rollers. The designs provide maximum cage strength consistent with the inherently high load ratings of needle roller bearings. Accurate guidance of the needle rollers by the cage bars allows for operation at high speeds. Also available are needle roller and cage assemblies using molded, one-piece glass-reinforced engineered polymer cages. Needle roller and cage assemblies are manufactured with either one or two rows of needle rollers.

Drawn Cup Bearings

The outer ring in the form of a cup is accurately drawn and no subsequent machining is performed to build the outer raceway. Drawn cup needle roller bearings are available in open ends or single, closed-end designs, They also are available with one or two integral seals. Other options include a single lubricating hole and matching inner ring.

Heavy-Duty (Machined) Needle Roller Bearings

These bearings are available in a wide range of inch and metric sizes plus an array of design features including: integral seals, side flanges (or separate end washers), inner rings, oil holes and single or double caged sets (or full complement) of rollers.

Track Rollers

Track rollers listed in this catalog are designed with outer rings of large radial cross section to withstand heavy rolling and shock loads on track-type or cam-controlled equipment. The outside diameters of the outer rings are either profiled or cylindrical, Profiled track rollers are designed to alleviate uneven bearing loading resulting from deflection, bending or misalignment in mounting. Stud-type track rollers are available with or without lip contact seals, or with shields. Yoke-type track rollers are designed for straddle mounting. Each yoke-type is available with either radial needle roller and cage assemblies, or with a single (or double) full complement row of cylindrical or needle rollers.

Thrust Bearings

Thrust needle roller and cage assemblies are available in a variety of inch or metric sizes. All types have very small cross sections. If the back up surfaces cannot be used as raceways, hardened washers are available. Thrust bearings are available with needle rollers or heavier cylindrical rollers for high load-carrying capacity.

Combined (Radial and Thrust) Bearings

Combined bearings consist of a radial bearing (needle roller bearing) and a thrust bearing (ball or roller bearing). Some combined bearings are constructed similar to drawn cups, but with an added thrust bearing component. Like other needle roller bearings, these combined bearings can be matched with an optional inner ring or thrust washer as the opposing raceway.

Koyo – Bearing Mounting Tool Kits

Tuesday, May 10th, 2011

Koyo BMT 39 - Bearing Mounting Tools

 

Practical Mechanical mounting set for safe, precise and quick mounting of bearings, bushings, sealing rings, cam wheels and pulleys.  The set consists of a dead-blow hammer, 3 aluminum sleeves and a set of 39 plastic collets (rings).

The impact resistant plastic collets support the inner and outer rings when mounting, preventing metal to metal contact and possible damage to the bearing rings and shaft.