Showing posts with label Motors. Show all posts
Showing posts with label Motors. Show all posts

Thursday, 12 February 2009

Motor and Gearbox Bearings

In order for any automobile form of transport to work correctly and efficiently they need to be fitted with motor and gearbox bearings. They are crucial components to the working of motors and gearboxes.

In our society today, thanks to electrical motors and gearbox speeds there is a requirement for the bearings of these two aspects to cater for higher radical loads and a greater carrying capacity. Due to this you are now able to get a hold of precision ball bearings that have been designed and created to provide smooth and quiet operation as well as adding a longer life to the application.

It is thanks to the increased loads and greater carrying capacity that is being placed onto motor and gearbox bearings that many industries and designers are seeking to reduce the size and weight of products to improve market competitiveness without any loss of reliability or life.

Many people often don’t know when they need to replace the bearings within a motor or gearbox. If you are in this position then I have a few tips for you. If you can hear a rumbling sound with the car ticking over then it is a good idea to push in the clutch; if the noise stops when you do this then you have noisy gearbox bearings. What this means is that the bearings may not be too worn but it acts as an indication that they will need renewing soon. If however the rumbling sounds more like grating then your bearings have worn down and they will need to be replaced as soon as you can.

Bearings are extremely critical components within any motor or gearbox as they can be subjected to a very demanding regime. The bearings within your motor or gearbox will be subjected to raised temperatures, which come as a result of high loads and operating speeds but also from severe ambient conditions and lubricant which will feature inherent contamination.

You are able to get motor and gearbox bearings in a variety of sizes as well as being specially designed to cater for low noise and vibration. The sizes of these bearings are generally available from 3mm shaft size up to 40mm. So whatever you need you are able to get the size bearing you need to do the job. But just what exactly are the basic necessities of electric motor bearings?

There are certain aspects that you need from your motor and gearbox bearings such as the following:

• Emergency running capability at very high temperatures
• Shutdown and restart capability
• Long service life at normal motor temperatures
• Satisfactory performance in cold climates
• Quiet operation and re-lubrication options

The way that bearings for motor and gearboxes are designed usually feature a deep groove radial, angular contact ball and cartridge bearings. Due to their design they have enhanced internal tolerances, lubrication, seals and shields, which ensure limited vibration and noise. They may also have contact or non-contact seals or shields.

Using the right bearings and ensuring that these bearings are taken care of is essential to the running of your motor and gearbox so make sure that you get the best and keep your eye on them.

For all of your Motor and Gearbox Bearings visit Howcroft Industrial Supplies. Even if they don’t have the Bearings in stock they can order them in especially for you.

Motors

The history of motors is something that that goes back to times when the fundamentals of electromagnetic induction were first introduced. Since then the core function of these motors remains the same, which is to convert electrical current into mechanical force.

Since the introduction of the motor there have been many different versions developed such as the following types of motors:

• AC motors - the most popular and simple form of an AC motor is the three-phase AC induction motor, which is also known as the squirrel cage motor.
• Stepper motors – these are electro-mechanical devices that convert current into torque output
• DC motors – these motors convert mechanical force into electrical energy through the use of a generator or dynamo. This form of motor can be divided into two types, which are brushed DC motors and brushless DC motors
• Linear motors – this form of motor produces linear force along it’s length instead of the conventional torque that is seen in other motors

All of these represent forms of electric motors, which are practically used everywhere around us. Nearly everything we use throughout our home requires the use of an electric motor. For example your microwave, fridge freezer, vacuum cleaner, hair dryer and car heaters and radiators all require the use of an electric motor. So just exactly how do these motors work?

Motors use electromagnetic fields that are used to generate motion. They function on the principle of magnetism. Most, but not all, work on the concept that there is a fixed magnet on the outside, which is called the field magnet and inside lies an armature that carries the current. As soon as the current passes through the wired armature it turns into an electromagnet with opposite polarity to the field magnet.

Due to there wide use motors play a key role to many businesses and the construction industry. So if you find yourself in need of a specific motor then you have come to the right place.

Here at Howcroft Industrial Supplies we are leading experts in all materials and tools associated with the construction industry. We can pretty much supply you with any form of motor that you need, even if we don’t currently keep it in stock. This is thanks to the fact that we are able to order in a vast array of motors to cover all of your needs.