The Prospectors Patch

GRB 777 Rock Crusher


Pickup available at 3/144 Great Eastern Highway

Usually ready in 24 hours

The GRB 777 packs a punch for its size. With dry material it can deliver up to 300kg per Hour of fine crushed product with our largest bottom screen. The replaceable Carbon Steel impact bars have a rating of 60 HRC. Giving you long lasting wearing capabilities.

There are interchangeable bottom screens available.  So you can alter the size of the output material.

The screens are held in place by 4 quick release heavy duty latches so if you want to clean between samples, access is quick and easy.

Everything on this machine has been made with the operator in mind. The goose neck feed hopper and gravity flap stops the possibility of rocks coming back out. The electric start makes life easy.   

Manoeuvrability is a plus with this machine, it's compact and has flat free tires with a sturdy lift handle.


LENGTH- 1200mm
WIDTH- 540mm
HEIGHT- 1020mm
WEIGHT- 110kg
ENGINE- Electric Start 9Hp Petrol or 5.5kw 3phase electric

OUTPUT SIZE- 70% of material below 0.5mm 


*This model comes standard with a 1.2mm bottom screen. Additional screens available for order.

Express Shipping

Fast shipping with tracking via Australia Post

Instore Pick Up

Online order pick up available at our Midvale store. Ready in 24 hours Mon-Fri

Family Owned

We are a family owned and operated small business since 1987

Pat The Shop Dog

We highly recommend you pat the shop dog on arrival

Pay Dirt

Want to have a go at panning gold without having to travel into the goldfields? We offer pay dirt bags with real goldfields soil and guaranteed gold in each bag.

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