6750D Electric Grinder

6750D Electric Grinder


The Peterson 6750D Horizontal Grinder is the electric powered version of the popular trailer mounted 6700D. Highly productive and efficient, it hits the “sweet spot” in the Peterson grinder product line. Powered by twin 600 HP (450 kW) electric motors with either soft-start or Variable Frequency Drive (VFD) starter control packages, the 6750D is ideal for stationary or semi-stationary operations. Electric power costs are typically much lower than diesel fuel costs, and in today’s changing economy, electric power may be the answer to increasing your profits.

With an internal drive compression roll and a 66 x 50 inch (168 x 127 cm) feed opening, the 6750D Horizontal Grinder can handle the requirements of your daily grind.

The 6750D Horizontal Grinder features Peterson’s Adaptive Feed Control System, which controls all components of the feed system to optimize output. This system senses variations in motor load and adapts the operating parameters to produce the maximum amount of material at all times.

Peterson’s three-stage grinding process with an up turning rotor and large grate area enables the 6750D Horizontal Grinder to produce materials to exact specifications. The quick-change multiple grate system makes it easy to customize grate configurations to produce a wide variety of finished materials. Grates are removed through an access door on the side wall.

Since 1981, Peterson has specialized in the developing of delivery and processing equipment that turns low-grade organic materials into high value products.

6750D Electric Grinder


The Siemens PLC Control System

Easily monitor system performance. The fully integrated, industrial grade Siemens PLC interface is user-friendly and customizable to your application.

The Impact Release System Protects Your Investment

Peterson’s patented Impact Release System’s air bags provides uniform grinding and protection from contaminated feedstock, a feature unique to Peterson grinders.

Maximum Power With High Torque Electric Motors

The 6750D’s industrial grade electric motors have a rugged cast-iron frame and feature dynamically balanced die-cast aluminum rotors for durability and long wear.

Heavy-Duty Feed Chains

Features heavy duty feed chains to ensure a lasting product.

Use Peterson Bits for The Best Quality Product

Peterson offers a wide variety of durable and long-lasting bits that enables you to produce exactly the products your customers demand.

Use Peterson Grates for The Best Quality Product

Peterson offers a wide variety of durable, long-lasting grates to enable you to produce exactly the products your customers demand.

The 6750D standard drum rotor.

The 6750D comes standard with a robust drum rotor.

The 6750D optional pinned rotor.

The 6750D can also come equipped with an optional pinned rotor for tougher or contaminated materials.

6750D Electric Grinder



Operating Length
62’-10 3/8” (19.15 m)
Operating Width
12 ‘-1/2" (361 cm)
Operating Height
17’ -6 3/8” (534 cm)
Travel Length
51’ -3/4” (1562 cm)
Travel Width
10’ -7 1/8” (323 cm)
Travel Height
12’-11 1/2” (395 cm)
Hopper Length
17’ -5 7/8” (560 cm)
Hopper Width
65 7/8” (152 cm)
Hopper Height
8’ -9” (267 cm)
Front to 5th Wheel
5’ -1 7/8” (155 cm)
5th Wheel to Center Axle
37’-6 1/8” (1143 cm)
Axle Spacing
60” (152 cm)
5th Wheel Clearance Radius
12’ (366 cm)
5th Wheel Height
39” (99 cm)


Machine Weight*
103,000 lbs (46 720 kg)
Tri-Axle Weight*
60,000 lbs (27 215 kg)
*varies depending on configuration


Electric Power (USA)
460 volt, 60Hz, 3-phase electric
Electric Power (Europe)
400 volt, 50Hz, 3-phase electric
Electric Power (Canada)
575 volt, 60Hz, 3-phase electric
Rotor Drive Motors
Crusher duty, 2 x 600 hp (450 kW)
Auxiliary Motor (for hydraulic functions)*
High efficiency 100 hp (75 kW)
Main Hydraulic Tank Capacity
95 gal (360 L)
*Does not include soft start and switching gear

Feed System

11yd ³ (10 m ³)
Hopper Length
17' 6” (550 cm)
Hopper Width
66" (168 cm)
Hopper Height
69 3/8” (176 cm)
5 sections, full hopper width
Feed Opening (width x height)
46 1/2"” (118 cm)
3 x 6 1/2" (76.2 x 16.5 mm)
Compression Roll Diameter (tip to tip)
42” (107 cm)


Rotor Shaft Size
7 1/2” (19 cm)
840 rpm @ 2100 rpm (engine)
Rotor Width
69 3/8” (176 cm)
Rotor Diameter
46 1/2” (118 cm)
Bit Size (width x height)
3 x 6 1/2” (76.2 x 16.5 mm)
Number of Bits
22 Drum Rotor, 20 Pinned Rotor, R+ Pinned Rotor 18


Number of Grate Sections
Total Grate Area
5253 in² (33890 cm²)
Grate Coverage
186 degrees
Grate Thickness
1 1/2” (38.1 mm)

Discharge System

60” (152 cm)
Discharge Conveyor Speed
450–700 ft/min (137.20–213.36 m/min)


583 yd3/170 US tons (446 m3/154 metric tons) per hour
653 yd3/111 US tons (499 m3/101 metric tons) per hour
Actual output may vary due to moisture content, material density, material size, support equipment, and grate size. Production rates are based on grinding 50 minutes per hour.

Optional Equipment

requires cross belt magnet

Specifications subject to change without notice.

6750D Electric Grinder


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