Large Holmes Hammermill Coal Crusher

Large Holmes Hammermill Coal Crusher: High-Capacity Reduction for Coal and Coke Samples

The Large Holmes Hammermill Coal Crusher is engineered for efficient and high-throughput reduction of large bulk samples of coal, coke, and similar friable materials. Its design prioritizes safety, durability, and ease of use in demanding laboratory and industrial environments.

Efficient and Safe Operation Equipped with rotary-swing hammers inside a rugged cast iron housing, this crusher rapidly reduces materials. The process begins at the covered feed hopper, which features a manual gate for precise control over the feed rate. The fully enclosed case minimizes dust and ensures that the crushing operation is contained, enhancing workplace safety.

Designed for Durability and Low Maintenance Key components are built to last. The rotors, swing hammers, and screen plates (larger than 3/16in or 4.8mm) are heat-treated and hardened to maximize their service life and resist wear from abrasive materials. A standout feature is the end-to-end reversible rotor assembly, which effectively doubles the lifespan of the hammers before requiring replacement.

User-Centric Safety and Accessibility Maintenance and cleaning are simplified by the hinged and latched housing. This design allows for quick, tool-free access to the internal grinding chamber for cleaning or to swap out the bolted-in perforated screen plates. For enhanced operator safety, an integrated open-latch sensor automatically cuts all power to the motor if the housing is opened during operation. Additionally, spring-loaded clamps create a tight seal between the sample collection containers and the discharge spouts, significantly controlling dust release.

High-Performance Specifications This large-capacity model is built to handle substantial workloads.

• Feed Size: Accommodates large feed sizes up to 6in (152mm).
• Throughput: Processes approximately 4,000lb (1,814kg) of material per hour.
• Final Particle Size: Reduces material down to a final size of 3/16in (4.75mm).
• Motor and Speed: Powered by a robust 7.5hp Totally Enclosed, Fan-Cooled (TEFC) motor, the rotor operates at a standard speed of 1,260rpm.

The unit is mounted on heavy-duty casters, allowing for easy relocation within a lab or facility. It comes standard with a special control box featuring a NEMA 12 magnetic starter and overload protection.

Ordering and Customization Each unit includes two screen plates in customer-specified perforation diameters. Available sizes range from 1/8in to 1in (3.2mm to 25.4mm), allowing for precise control over the final particle size distribution. Please select your desired screen plate sizes from the drop-down menu when placing your order.

Features:

• Accommodates large feed sizes up to 6in (152mm).
• Hinged housings for quick cleaning access and screen replacement.
• Heat-treated and hardened rotors, hammers, and screens for maximum durability.
• Safety sensor detects open latches and cuts all power.
• End-to-end reversible rotor assemblies for maximum hammer life.
• Manual feed gate for controlled material input.
• Spring-loaded clamps secure collection containers and control dust.

Included Items:

• Large Holmes Hammermill Coal Crusher (230V/60Hz)
• Two screen plates in customer-specified sizes
• One 1.5ft³ (42.5L) sample collection container
• 10ft (3m) connecting cable for a power source

Specifications:

• Application: Coal, coke, and other friable materials
• Maximum Particle Size: up to 6in (152mm)
• Max. Feed Capacity: 4,000lb (1,814kg)/hr
• Final Size: Down to 3/16in (4.75mm)
• Crushing Element: Hardened Manganese Steel Rotary Swing Hammers
• Hopper Capacity: 1.6ft³ (45L)
• Chamber Dimensions: 10 x 15in (254 x 380mm)
• Electrical: 230V/60Hz, 3-Phase, 20.2A
• Product Dimensions (WxDxH): 36 x 39 x 56in (915 x 990 x 1,422mm)

Meets Test Method:

• ASTM D2013 / D2013M