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RC-1 Quality Portable Gravel Rock Crusher


  • 300-400 pounds of grind per hour single pass
  • Crushes 1-inch gravel to fine powder 1/8″ and finer first pass
  • 120 mesh grain size achievable with 3 passes
  • Powder great for enhancing garden soils
  • Includes, RC-1 Crusher and Vacuum Bucket
  • Bucket output port suitable for 2-1/2″ shop vacuum hose
  • 5HP Gas Engine
  • Portable – 85 pounds
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Cart Link – RC-1 Cart

Blade Link RC-1 Replacement Blade   


SKU: RC-1 Categories: , ,


RC-1 Quality Portable Gravel Rock Crusher

This amazing RC-1 Quality Portable Gravel Rock Crusher is ideal for those interested in an economical, light-weight high-speed gravel crushing machine. Because this machine easily generates fine powders, many are finding it ideal for crushing gravel for gold processing as well as production of rock dust for enhancing garden soil.

Watch the RC-1 Video Here

The RC-1 Quality Portable Gravel Rock Crusher is easy to use

The RC-1 Quality Portable Gravel Rock Crusher is easy to use. Consequently, material is gravity fed into the hopper and drops into the center of a high-speed rotating tube. As a result, centrifugal force throws the rock into a hardened steel impact wall.  Speeds in excess of 400 miles per hour are generated. Because of this process, the harder the rock, the easier it shatters into instant powder. As a result of some particles being uncrushable,  these particles will automatically pass through the unit without damage or hesitation. Consequently, all material after crushing passes automatically into a five-gallon bucket.  The bucket forms a sealed chamber providing a low dust environment.

The RC-1 Cart added benefits

Because the RC-1 Crusher has a high center of mass on top of a 5 gallon bucket, it is prone to tipping over.   As a result, the cart was developed for adding stability to the crusher.  In addition, the bucket is easy to access for changing. Here is the link for the RC-1 Cart.  

RC-1 Quality Portable Gravel Rock Crusher with Cart
Portable RC-1 Gravel Rock Crusher with Cart and 5 gallon bucket

The RC-1 crushes all rock types

Ideal for crushing all types of quartz, schist, limestone, etc.  This new machine is also ideal for crushing black sand concentrates to release any encapsulated micron gold for further processing. Additionally this machine will crush volcanic basalt and granite gravels into rock dust for garden soil enhancement.

1 inch gravel
1 inch gravel


Rock Dust
RC-1 Rock Dust Powder

Rock dust for your garden

Growing high quality crops requires more than just organic material.  More than three key elements, nitrogen, phosphorous, and potassium are required.   Because plants use up to 40 key elements, more elements should be made accessible.   You can learn more from these articles:  Rock Dust Primer, How To Use Fertilizers – Rock Dust, and Rock Dust and Remineralization.  Buying rock dust can be expensive.  At 1.25 pounds per square yard, at a price of $1.00 to $10.00 a pound, why not make it yourself. Granite river rock and volcanic basalt are easy rocks to find for crushing for garden use.

The RC-1 production rate

The RC-1 crusher is mounted to a vertical 5 horsepower engine. This machine is capable of producing up to 400 pounds of grind in just one hour. This results in a single pass, dependent on rock type, product that is 1/8″ and smaller.  Therefore, multiple passes may be desired for finer grinds down to 120 to 180 mesh. Designed primarily as a pilot mill, this machine is not a production machine. However, it processes more than enough rock dust for home gardeners and enough material for testing the feasibility of larger crushers for gold processing or a rock dust business. The maximum rock size that this unit will handle is one inch.  This is perfect for most home garden jobs,  prospectors, and feasibility studies.

Works with your shop vacuum

The RC-1 Quality Portable Gravel Rock Crusher produces fine powder dust.   The Crusher also comes with a 5 gallon bucket specially fitted with a 2-1/2″ shop vacuum hose port.   As a result, you just attach your shop vacuum to the output port and you collect the vary fine dust.  Therefore it is easy to maintain a dust free work environment. The larger particles stay inside the bucket.  These are then easy to return to the crusher chute for additional processing.   It’s easy.


  • RC-1 Crusher – 85 pounds
  • Cart – 35 pounds
  • Replacement Blade – 3 pounds
  • Total Weight 123 pounds

Quality Manufacturing

Manufactured by Keene Engineering, Chatsworth, CA manufacturing quality mining equipment for over 70 years.

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Cat 6 Tools, LLC
Cat 6 Tools, LLC
Henderson, NV


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Additional information

Weight 95 lbs
Dimensions 44 × 19 × 20 in
RC-1 Rock Crusher

RC-1 Crusher, RC-1 Cart, Replacement Blades