Roller Mill Drives
Roller mills of various types are widely used for crushing coal, limestone, hard rock ores and other materials whose particle size needs to be reduced for processing. The reduction gear drive is one of the most critical components of the roller mill. The gearing must continuously withstand severe impact loads, whose vertical loading can reach values in excess of 3 million pounds.
This is a heavy-duty application that requires a heavy-duty solution. That is why Philadelphia Gear has been a principle source of pulverizer drives for more than 50 years.
- Enclosed Drives - New and Replacement
- Design Engineering
- Mark VII Controller
- Synchrotorque Technology
- Conveyor Drives
- Ball Mill Drives
- Roller Mill Drives
- Classifier and Atomizer Drives
- Air Preheater Drives
- Fan Drives
- Single and Double Reduction Cooling Tower Drives
- Low-Speed Pump Drives
- High-Speed Pump and Compressor Drives
- Accessory Drives
- Generator Drives
- Design Engineering
First Generation Roller Mill Drives
Philadelphia Gear® was one of the most successful lines of dynamic pulverizer drives ever developed. Working with OEMs Babcock & Wilcox, Combustion Engineering (CE) and Foster Wheeler, we supplied the gear drive for the MPS-89, CE and MBF coal pulverizers, respectively. Characteristics of this style of pulverizer drive are:
- Triple reduction, bevel helical gear configuration
- Bevel and single helical gearing supported by rolling element bearings
- Pressure lubricated gearing and bearings
- Output table supported by thrust bearing
Second Generation Roller Mill Drives
Functionally, these units are designed to perform the same as the first generation pulverizer drives but have some different characteristics:
- Gear configuration is double reduction bevel-planetary (epicyclic)
- Gearing is bevel and spur epicyclic, supported by rolling element bearings
- Gearing is pressure lubricated by motor driven oil pump
Gearbox Repair and Overhaul
Full Disassembly & Cleaning
Inspection & Measurement
Engineering Evaluation & Recommendations
Upgrading & Modifications
Reverse Engineering