Burr King - Model 720 Probe Belt Grinder - 1 x 72 OR 2 x 72

Burr King Model 720 Probe Belt Grinder – 1" or 2" x 72", Air or Manual Tension

The Burr King Model 720 is a high-precision probe belt grinder engineered for deep-cavity access, internal surface finishing, and demanding industrial grinding tasks. Designed around a unique up-front two-wheel layout with rear drive, this machine supports contact wheels from 3/8" to 3" in diameter and belts from ½" to 2" wide, delivering unmatched utility in tight spaces.

Now available with your choice of air-powered or manual belt tension control, the 720 provides flexible tensioning for optimal belt tracking and control. A 72" belt track ensures extended abrasive life, and models are available in both fixed-speed (5,500 SFPM) and variable-speed (550–5,500 SFPM) configurations.

 Key Specifications:

• Belt size: ½″ to 2″ wide x 72″ long

• Standard contact wheel: 1″ diameter × 2″ wide

• Speed: Fixed (5,500 SFPM) or variable (550–5,500 SFPM)

• Motor: 1.5 HP, available in multiple voltage and phase options

• Tension control: Air (adjustable pressure regulator) or manual

• Mounting: Bench or optional pedestal

• Machine footprint: Approx. 20″ W × 36″ D × 36″ H

Built for Precision Work:

• Reach up to 14″ deep into cavities (diameter-dependent)

• Ideal for grinding and blending inside tubing, turbine blades, or other internal shapes

• Smoothly finish exotic materials, blend surfaces, or aggressively remove material

• Integrated dust collection shroud with 3″ port for cleaner shop operation

• Belt guard with access door for safe and easy maintenance

Compatibility & Options:

• Accepts all Burr King 1400-series nose attachments (includes one standard)

• Optional upgrades:

  • Variable-speed drive systems (single or 3-phase)

  • Magnetic starters

  • Larger HP motor options

  • Mounting pedestal

  • Additional contact wheels and nose attachments

Whether you're blending the inner diameter of tubing, finishing high-performance turbine blades, or doing precision cavity work, the Model 720 delivers professional-level control, power, and reach—all in a compact, robust footprint.