The word drive is the act of setting or keeping something in motion or operation. Whether it is a car, the sales numbers at your company, or even a herd of cattle, there is usually a crucial component that drives success. In rotating and turntable applications using a slewing ring bearing, the same holds true – success can directly correlate to the component used to drive the system; so it’s important to know the different options.
If you have this type of application, below are three different ways to drive a slewing ring bearing.
Most slewing ring manufacturers offer a geared option. For example, igus® offers a spur-gear solution, which complies with DIN3967.
The mating gear for any slewing ring should be made of a material that is softer than the actual gear itself. For instance, a slewing ring that uses a gear made from anodized aluminum would ideally have a mating gear made of a POM. The POM material is softer than the anodized aluminum and the combination also makes the system completely dry-running.
In comparison, a slewing ring that uses both a gear and mating gear made of aluminum, or any other metal, is ideal for intermittent movements, but requires constant lubrication. Having to continually re-lubricate the slewing ring is messy, time-consuming and can also be very costly.
If a slewing ring uses a mating gear made from steel, the gear should be made of the same material in order to avoid damaging the slewing ring.
igus® offers three different belt options:
A drive-plate coupling connects to a motor assembled directly to the slewing ring. igus® offers a drive-plate accessory, which mounts to the motor without using a gear or a belt, to make coupling the drive system even easier.
For sizes up to 100 millimeters, igus® offers the drive plate in aluminum. For sizes larger than 150 millimeters, the drive plate comes in stainless steel so it can handle the higher amounts of force permissible for these sizes.