Description
Bulky structural weldments and massive axle housings strike narrow grinder frames in heavy equipment rebuild facilities. Bolt the Baldor-Reliance 12 Inch Grinder Wide design machine to your shop floor for unrestricted casting cleanup at 1800 RPM. Motor output delivers two horsepower on dual-voltage three-phase power. Forcing thick iron castings into cold wheels without dressing stalls the motor and bogs spindle speed.
Pull the cast iron wheel shields over our wash tank to inspect this heavy industrial workhorse. The dual-voltage three-phase motor turns an extra-long precision-ground rotor shaft mounted inside a ductile iron motor cylinder housing. Heavy-duty sealed ball bearings support the wide-stance arbor to eliminate shaft runout under punishing downward pressure. The wide-stance casting provides extended clearance between wheels and motor frame, permitting deep manipulation of large fabrications.
Hardware Performance Matrix Breakdown
Heavy casting cleanup demands wide wheel clearance and continuous three-phase motor torque. Fleet mechanics inspect these seven mechanical hardware specifications during periodic shop overhauls.
- Two horsepower industrial motor runs on 230 or 460-volt three-phase power for maximum torque.
- 1800 RPM spindle speed maintains continuous grinding velocity under heavy casting downforce.
- Wide-stance chassis design provides fourteen inches of clearance between wheels and motor housing.
- Cast iron wheel housings contain twelve-inch wheel fragments in case of wheel burst accidents.
- Cast iron tool rests adjust to support heavy structural weldments against grinding wheels.
- Sealed pre-lubricated ball bearings keep abrasive foundry grit and steel filings out of motors.
- Heavy cast base anchors to structural shop floors to eliminate harmonic grinding vibration.
Dyno Bench Load Telemetry
Testing an equivalent industrial pneumatic arbor requires 62 CFM at 90 PSI dynamic under full stall load. Spindle free speed turns 1800 RPM on our tachometer but drops to 1520 RPM under heavy casting snagging. Air feed through a 50-foot hose creates a 16 PSI dynamic pressure drop at the inlet. Adiabatic expansion triggers a 32 degrees Fahrenheit drop, freezing sintered bronze exhaust mufflers. Breakaway torque reaches 68 foot-pounds at 84 dBA.
Field Service Trade Offs
Grinding heavy foundry castings on twelve-inch wheels generates massive gyroscopic forces and high heat that demand full leather protective gear. Maintenance shops operating small pancake compressors or unlubricated air whips must avoid pneumatic conversions because continuous heavy snagging consumes massive air reserves that soon stall light air motors. Dress wheels on every single shift.
- True grinding wheel faces with a mechanical star dresser to expose fresh sharp abrasive points.
- Adjust tool rests to within one-sixteenth inch of wheel faces to prevent work traps.
- Ring-test twelve-inch abrasive wheels before mounting to detect hidden shipping cracks.
Commercial Warranty Terms Inventory
The manufacturer backs this heavy industrial grinder with a 3-Year limited warranty covering defective parts and factory construction. The commercial shipping crate contains the twelve-inch wide-stance bench grinder, cast iron wheel guards, adjustable tool rests, spark arrestors, eye shields, and an industrial equipment operation manual.