Cobra Crusher – Portable Rock Crusher for Sampling Gold-Bearing Ore

Crush Ore Samples in the Field and Quickly Check for Recoverable Gold

The Cobra Crusher is a compact, portable rock crusher designed for sampling gold-bearing ore, quartz and black-sand concentrates. Instead of carrying heavy rock samples home, prospectors can crush a representative sample, pan the pulverized material and check for visible or recoverable gold while still in the field.

The all-steel crushing chamber uses replaceable chain hammers powered by a compatible angle grinder. Its straight feed tube simplifies loading material and pouring the crushed sample from the chamber.

Angle grinder is not included.

Features

• Portable design weighs approximately 10 pounds

• All-steel crushing-chamber construction

• Chain-hammer crushing system

• Straight feed tube for easier loading and unloading

• Reduces small rock samples to fine material for testing

• Useful for checking gold-bearing quartz and ore

• Can process black-sand concentrates

• Operates with a compatible corded or cordless angle grinder

• Compact enough for field sampling and remote exploration

Recommended Uses

• Sampling potentially gold-bearing ore

• Crushing quartz and mineralized rock

• Preparing material for test panning

• Checking samples for free-milling gold

• Processing small quantities of black sand

• Prospecting, exploration and geological sampling

• Reducing the amount of untested rock carried from the field

How It Works

1. Break the sample into pieces appropriate for the crusher’s feed tube.

2. Securely attach a compatible angle grinder according to the crusher instructions.

3. Load a small amount of material into the crushing chamber.

4. Operate the grinder to pulverize the sample with the internal chain hammers.

5. Disconnect the power source and wait for all moving parts to stop.

6. Empty the crushed material into a gold pan or classifier for testing.

The Cobra Crusher is intended for sampling and small-batch testing, not continuous commercial ore production.

Grinder Requirements

• Angle grinder sold separately

• Recommended minimum corded power: 7 amps at 110 volts

• For cordless operation: professional-quality 18-volt or higher grinder recommended

Confirm that the grinder is mechanically compatible with the Cobra Crusher before operation. Follow the instructions supplied with both the crusher and grinder.

Specifications

• Product Name: Cobra Crusher

• Product Type: Portable chain-hammer rock crusher

• Construction: Steel

• Approximate Weight: 10 pounds

• Crushing Chamber: Approximately 7.5" long x 3.5" wide

• Overall Chamber Height: Approximately 9", including the feed tube

• Power Source: Compatible angle grinder

• Store SKU: COBRACRUSHER

What’s Included

• Cobra Crusher steel crushing chamber

• Internal chain-hammer assembly

• Grinder attachment assembly

Angle grinder, battery, extension cord, collection pan and personal protective equipment are not included.

Important Safety Information

Crushing rock can produce sharp fragments, flying debris, extreme noise and respirable silica dust. Operate the crusher outdoors or with appropriate dust-control equipment. Wear approved eye protection, hearing protection, gloves and a properly fitted respirator suitable for mineral dust.

Never place hands, tools or loose clothing near the feed tube or moving components. Keep the crushing chamber fully assembled and secured during operation. Disconnect the grinder from its battery or electrical supply before loading, unloading, inspecting, cleaning or servicing the crusher.

Inspect the chains, bearings, fasteners and attachment points before every use. Hard or abrasive ore will wear internal components, which must be replaced when damaged or excessively worn.