4700D Horizontal Grinder

4700D Horizontal Grinder


The 4700D is a wheeled horizontal grinder designed for high-volume producers with very demanding end-product specifications.

The 4700D is powered by a Tier IV Caterpillar C18 engine rated at 755 horsepower (563 kW). A Tier II, 765 horsepower (570 kW) engine is also available.

It features Peterson’s Adaptive Control System, which controls all components of the feed system to optimize output. This system senses variations in the engine 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 4700D to produce materials to exact specifications.

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.

The IQAN control system provides the operator with complete engine and system parameters to simplify set up to efficiently operate the unit.

4700D Horizontal Grinder


3-Stage Grinding Process Provides Faster Reduction

Peterson’s powerful up-turn 3-stage grinding process provides better fracturing of material and a more consistent product, giving you just the product your buyers are looking for.

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.


The Second Line of Defense: The Impact Cushion System

Urethane cushions and shear pins help protect the mill from catastrophic damage in the event of a severe impact from contaminants in the feedstock.

Use Peterson Bits and Grates for The Best Quality Product

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

4700D Horizontal Grinder



Operating Length
60' 5" (1842 cm)
Operating Width
11' 11" (372 cm)
Operating Height
17' 3" (526 cm)
Travel Length
47' 5"(1446 cm)
Travel Width
9' 11" (301 cm)
Travel Height
12' 11" (394 cm)
Hopper Length
14' 2" (432 cm)
Hopper Height
7' 4" (222 cm)
Front to 5th Wheel
4' 6" (137 cm)
5th Wheel to Center Axle
35' 3" (1074 cm)
Axle Spacing
5' 0" (152 cm)
5th Wheel Clearance Radius
7' 7" (231 cm)
5th Wheel Height
4' 0" (123 cm)


Machine Weight
79,000 lbs (35 834 kg)


CAT C18 Tier IV, 755 hp (563 kW)
CAT C18 Tier II, 765 hp (570 kW) export only
PT Tech HPTO 15
Fuel Tank Capacity
300 US gal (1136 L)
Main Hydraulic Tank Capacity
90 US gal (341 L)

Suspension & Towing

2 hydraulic

System Control

Peterson+ Analytics

Feed System

Specifications vary based on optional equipment and machine configuration and are subject to change without notice. Measurements are rounded to the nearest whole increment.

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