How to Choose a Grizzly Rock Screen

A grizzly rock screen separates rocks, gravel and debris from soil and aggregate before material goes any further. It's a simple, durable piece of equipment, but choosing the wrong size or bar spacing means slow screening or a screen that doesn't suit your machine. Here's how to choose.

What a Grizzly Screen Does

Material is loaded onto an angled frame of steel bars. Smaller material falls through the gaps between the bars, while oversize rock is held back and slides off the end. Screening early keeps oversize rock out of crushers, hoppers and finished product, and gives you cleaner fill and topsoil.

Where They're Used

Construction and site clearing — separating rock from excavated soil so it can be reused as fill.
Landscaping and property work — cleaning topsoil and removing rock before spreading or levelling.
Quarry and mining work — pre-sorting material before it goes to further processing.

Comparing the Main Options

Model	Size	Capacity	Best for
TMG-RS08	244 cm (8 ft)	2,268 kg	Smaller sites and lighter throughput
TMG-RS10	3 × 2 m	2,200 kg	General-purpose site and landscaping use
TMG-RS12	3.6 × 2.7 m	2,200 kg	Larger sites and higher volume

Adjustable Deck Bars

All three models use adjustable deck bars, so you can change the spacing to suit the material. Wider spacing lets more through and moves faster; narrower spacing holds back smaller rock for a cleaner, finer result. Set the spacing to the size of rock you want to keep out, rather than leaving it at one setting for every job.

Matching Size to Your Loading Equipment

A larger screen only helps if you can feed it. Consider what you'll load with, such as an excavator or loader, and make sure the screen's size and the bucket's reach suit each other, with room to stand the screen on firm, level ground and clear the rejected rock.

Frequently Asked Questions

What is a grizzly screen used for? It separates oversize rock from soil and aggregate, so you can reuse good material and keep oversize rock out of further processing.

Does the bar spacing matter? Yes. The spacing sets what falls through and what is held back, so match it to the size of rock you want to remove.

Which size should I choose? Choose by how much material you'll process and how it's loaded. The smaller screen suits lighter work; the larger one suits bigger sites and volume.

Final Word

Pick the screen size to match your throughput and loading equipment, and set the deck bars to the rock size you want to remove. Browse the range in the Rock Screeners collection, or get in touch with the TMG Industrial Australia team to talk through your site.

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