NEWMAN G-280 Knife Grinder

Newman G-280 Rotary Knife Grinder – Specifications & Features

Primary Purpose

The Newman G-280 is designed for precision sharpening of chipper, planer, and other specialty knives. It enables operators to grind a straight bevel across the face of the knife with exceptional accuracy.

Key Design Features

• Rotary Disc Configuration: Uses a rotating disc with four adjustable outside bars for bevel grinding between 25° and 40°.
• Inside Bars: Equipped with four fixed-angle inside bars set at 30° specifically for planer knife sharpening.
• Coolant System: Integrated coolant setup where the base acts as coolant reservoir and floods knives before and after grinding—ensuring efficient cooling during operation.
• Durability: Rotary design eliminates repetitive wear on the table and ways, unlike reciprocating grinders.

Technical Specifications

Knife Capacity

Length: 2″ to 28″

Width: 2″ to 6½″

Thickness: 1/8″ to 1″

Head Motor

10 HP TEFC (Totally Enclosed Fan-Cooled)

Voltage: 230/460/575 V

Knife Bars

Outside: 28″, four adjustable (25°–40°)

Inside: 32″, four fixed (30°)

Grinding Wheel

Diameter: 12″

Feed Motor / Speed

¾ HP TEFC

Variable Feed: 8–24 RPM

Surface Grinding Speed: 50–150 FPM

Size & Weight

Skidded Weight: ~4,080 lbs

Floor Space: Diameter ~68″

Crated Size: 6′ × 6′ × 7′, ~4,230 lbs