Rock crushers are essential tools that facilitate daily operation in quarries. Based on their demanding work, their motors are built to meet the demands of the motor crushers. These motors are designed for high-belted loads for rock crushers and chipper applications. They also help drive production, ensure minimal downtime, and drive profit through their usage.
Anyone involved in rock crushing, whether a manager or an operator, should understand the features and applications of their motors. Here’s what you should know about them.
An Overview of Severe Duty/ Crusher Duty Motors
Crusher duty motors are improved versions of standard enclosed fan-cooled motors. Since they are made for harsh industrial environments, they must be able to sustain a high-demand duty cycle, reliable protection from moisture and contamination, and vibration resistance. They’re also made to meet IEEE-841 standards.
These motors should produce a quality performance that outlasts other totally-enclosed fan-cooled (TEFC) motors. They also have several features to protect them from exposure to sawdust, ash, and other airborne particles. Most of them also have a three-year warranty compared to the 1-year warranty for the standard models.
When compared to standard motors, severe duty motor compares in the following ways:
- Junction box: Standard TEFC motors have a steel or die-cast aluminum casing, while severe duty motors have a cast iron casing.
- Fan Cover: Standard TEFC motors have a plastic fan cover, while heavy-duty motors use cast iron.
- Lead seal gasket: Standard TEFC motors use O rings or V rings, while severe duty motors use Neoprene boots.
- Bearing Inner Cap: Standard TEFC motors don’t have an inner bearing cap, but severe duty motors use cast iron as their inner bearing cap.
- Vibration: Standard TEFC motors have a vibration rating of 0.15 IPS, while severe duty motors have an IPS rating of 0.008.
- Nameplate: Standard TEFC motors have an aluminum nameplate, while severe duty uses a stainless steel nameplate.
Common Industrial Applications
Severe-duty motors are used in various heavy-duty industrial applications. This includes:
- Above ground mining
- Aggregate and cement
- Bulk material handling
Specific above-ground mining machines that use severe-duty motors include:
- Bucket-wheel excavator
- Blasthole drills
- Dragline excavator
- Highwall miners
- Wheel tractor scrapers
When it comes to aggregate and cement, the following machines use severe-duty motors:
- Hammer mills
- Cage mills
- Roll crushers
- Gyratory crushers
- Jaw crushers
- Inclined conveyors
- Dual-drive stackers
- Rock crushers
Equipment that uses heavy-duty motors in bulk material handling includes:
- Bucket elevators
- Vibratory feeders
- Weight batching system
- Vibratory screeners
- Mixers and blenders
Finally, some of the machines that use heavy-duty motors in the logging industry include the following:
- Feller bunchers
- Knuckleboom log loaders
- Wood chippers
- Forestry mulchers
- Swing machines
Crusher Duty Motor Features
At Gainesville Industrial Electric, our crusher duty motors have the following features:
- High-strength oversized shaft
- High starting torque
- Full load ampere or FLA of NP:50.6 amp to 455 amps
- High breakdown torque
- Energy saving design
- Premium efficiency
- Service factor 1.15
- 460 volts
- Suitable for harsh applications that require motors that guarantee longer life
- Use of a total enclosed cooling fan
Contact our Experts for Your Severe Duty Motor Needs
Severe duty motors are best suited for machines in harsh industrial applications. They have all the features needed to sustain the requirements for rugged industrial applications. At Gainesville Industrial Electrical, we supply, distribute, and repair electrical motors for all heavy-duty industrial applications. Our experienced staff is dedicated to finding a suitable motor for our customers.