Back to Products

Product Downloads

GreyHawk/Metso C120 Portable Plant

Nordberg C120 Jaw Crusher

The Nordberg C120 is an aggressive primary jaw crusher for quarries, gravel pits, mines and recycling.  The deep cavity and nip angle provide excellent draw and throughput.

Mounting of the crusher is make without a bolted connection to the foundation.  The main frame of the crusher is made of rolled steel side plates and two steel castings, connected through precision machined bosses and held together by large diameter bolts.  The pitman and front and rear frame castings are made from high–quality steel with excellent fatigue strength.  There are no welded joints in the frame.  The frame can be completely disassembled for transportation if necessary.  The eccentric shaft bearings are long–life grease lubricated spherical roller bearings and are all of the same size.

The discharge setting is easily adjusted  remotely with hydraulics, by means of moving wedges.  The toggle plate operates on a rocking principle without any lubrication and serves as an overload fuse.

The crusher’s jaw dies are of high–manganese steel castings, and the cheek plates of high abrasive–resistant steel plate.  The jaw dies can be reversed for maximum utilization.  Tools for jaw die are included with the jaw crusher.

Setting Adjustment

  • Hydraulic Wedge Adjustment – Hydraulic setting adjustment has all the advantages and functions of mechanical setting adjustment plus it is faster and easier to use.  All setting adjustments are done remote controlled by means of activating hydraulic cylinders.
  • Hydraulic Power Unit – Electrification 460V/60Hz. The hydraulic setting adjustment is powered by a hydraulic power unit.  A return cylinder keeps the pitman pulled backwards.
  • Hydraulic unit
  • Adjustment wedges with supports and cylinders
  • Return cylinder
  • Electric motor
  • Control 115V 60Hz
  • Hoses from the unit to cylinders
  • Heat Resistor – Resistor for oil heating in the hydraulic tank

Jaw Dies & Protection

  • Jaw Profile: Quarry
  • Protection Plate – Front Frame & Pitman
  • Drillings for Main bearing temperature sensors

Support Brackets

  • Vibration absorbing mounting pads

Drive Equipment

  • Integral Motor Support with 200HP 1200RPM TEFC motor
  • Drive on Left Side (viewed from the fixed jaw end)
  • Flywheels 10 x 8 V grooves
  • Safe and user friendly composite guards

Metso 52” x 20’ Vibrating Grizzly Feeder

  • 14’ Pan with replaceable ¾” AR steel liners
  • One 6’ grizzly section, with adjustable bars
  • ½” Quick Change AR side plate liners
  • VL–11 Vibrator, oil lubricated with (2) eccentric shafts and (2) wide faced helical gears (4–110mm, 23 series bearings)
  • Mounted on steel coil springs at 0 degrees
  • V–belt drive includes feeder sheave, motor sheave, and belts
  • V–belt guard
  • (8) Fabricated steel grizzly bars
  • OST (Rosta Style) motor base

GreyHawk 60” Under–crusher Conveyor with Hydraulic Power Fold Head Section & Wrap Drive.

  • 8” channel bridged truss design
  • Superior 5” CEMA C channel mount idlers
  • Superior 5” CEMA C return idlers with guards
  • Superior 5” live shaft
  • Superior Exterra belt scraper
  • Superior Powerfold
  • Two foot impact bed at crusher discharge with Argonics impact bars
  • 18” tube in tube take–ups
  • Single ply conveyor belting
  • Hinged tail section with hydraulic raise and lower for maintenance access
  • Head Pulley
    • Superior 16”x63” drum pulley
    • XT50 hubs
    • 3–7/16” pillow block bearings
  • Drive Pulley
    • Superior 16”x63” vulcanized drum pulley
    • XT50 hubs
    • 3–7/16” pillow block bearings
    • Falk 5215 shaftmount gearbox
    • Weg 30hp motor
  • Snub Pulley
    • Superior 14”x63” chevron wing pulley
    • XT40 hubs
    • 2–15/16” pillow block bearings
  • Tail Pulley
    • Superior 14”x63” chevron wing pulley
    • XT40 hubs
    • 2–15/16” pillow block bearings

GreyHawk Heavy Duty Chassis

24” 84# Mainbeam with Quad–Axle Hutch Suspension 49.5 inch centers, equipped for semi trailer towing with 11:00 R 22.5 tires on Budd type wheels, air controlled brakes, fifth wheel kingpin, conveyor supports, travel lights, reflectors, mud flaps, and heavy duty removable bumper/light bar.  Machinery platform with hand rails above the jaw crusher, and a large machinery platform at the back of the crusher.  Heavy Duty 3/4” thick A–36 steel hopper, with ½” AR400 plug weld steel liners on the lower two–thirds of the hopper.  Heavy duty skid assembly for removal of the complete hopper assembly, by–pass chute with hydraulic slide arrangement for providing service access to the back of the jaw crusher.

Safety Guards:

We install all standard guarding, customer will be responsible for compliance with local codes.


  • Chassis to be sandblasted, one coat tow part epoxy primer and two part urethane finish painted one coat GreyHawk beige with orange and grey highlight stripe on the trailer frame beams.
  • (2) sets of owners/parts manuals.

Electric Starters, Wiring and Controls – 5' x 5' x 12" electrical enclosure with structural support to set on grade during plant operation. The enclosure is connected to the plant with 15' electrical cable. The enclosure has a main inlet line surge arrestor, warning horn, lifting eyes and main circuit breaker with door interlocked disconnect linkage. All on–plant equipment is controlled by NEMA rated starters. Crusher motor is controlled by a digital solid state reduce voltage starter (soft–start).  The panel includes an hour meter located inside the enclosure and a door mounted amp meter for crusher amperage.  The feeder motor is controlled by a variable frequency drive.

Adjustable king pin support – Adjustable tubular supports reduce the amount of blocking required in the kingpin area during plant operation, which simplifies set up and tear down. The kingpin supports are lifted and pinned for towing to clear the semi–tractor.

Power hydraulic raise and lower – Six tube in tube style heavy duty run–on jacklegs, with 6" diameter x 18" stroke cylinders to lift the plant into the operating position. Each cylinder is independently controlled from a hydraulic valve for precise control and ease of leveling. The hydraulic system is powered by an 11 HP Honda gasoline engine with electric start and backup recoil start.  Includes two (2) additional valves for sliding the by–pass hopper away from the jaw crusher, and for hydraulic lowering the under crusher conveyor.