Double Roll Crushers

McLanahan Double Roll Crushers provide a 4:1 reduction ratio and are typically used as secondary or tertiary crushers for materials such as ROM coal, limestone, gypsum, trona, shale, bauxite, oil shale, clean coal, coke, salt, lime, glass, kaolin, brick, shale, and wet, sticky feeds. They can also be used following other McLanahan equipment, such as Feeder-Breakers, Rotary Breakers, primary DDC-Sizers, or Single Roll Crushers, when further reduction of primary crushed material is required.

In a Double Roll Crusher, the forces needed to crush material are created through the rotating energy of the opposing rolls. Since each machine is custom engineered, roll elements and tooth patterns are selected depending on each unique application to produce a cubical product with minimal fines.

Designed for safety and many years of operation, effective tramp protection against non-crushable material is provided by an automatic spring-and-toggle system. This allows a movable roll to open, pass the material and return to its original setting for continued operation. Hydraulic product size adjustment allows producers to adjust for changes in product size requirements or to compensate for roll wear.

Operation of Double Roll Crushers is simple without timing gears. Dual drive arrangements use a separate electric motor and V-belt drive for each roll, resulting in quiet operation, while for single drive arrangements power is transferred to opposing rolls by an inter-stage V-belt drive.

McLanahan Corporation has a fully equipped applications research laboratory where crushing and screening tests can be performed to confirm crusher selection.

Features / Benefits

Equipment Models

Black Diamond Double Roll Crushers

Black Diamond Double Roll Crushers are the most versatile and popular model of McLanahan Double Roll Crushers. Ideal for tertiary crushing where product requirements drop below ½” (12.7 mm), Black Diamond Double Roll Crushers are most commonly used to crush clean coal or friable materials with little or no hard refuse. They are available with single or dual V-belt drive.

Heavy-Duty Double Roll Crushers

Heavy-Duty Double Roll Crushers are ideal for the primary, secondary and tertiary crushing of limestone, gypsum, ROM coal, etc., yielding a cubical product. Low horsepower machines, Heavy-Duty Double Roll Crushers operate with two V-belt drives. They can be equipped with solid or segmented rolls.

Shalemaster Double Roll Crushers

Shalemaster Double Roll Crushers are driven mechanically through gear reducers and couplings. They offer the same durability as other McLanahan Double Roll Crushers, but are designed to handle wet, sticky feeds such as soft shale, kaolin and clay. The Shalemaster’s special claw tooth roll design and differential roll speeds provide optimum performance against plugging and other problems that are often associated with handling sticky materials.


Roll Crushers Brochure

Double Roll Crusher Flyer - Imperial

Double Roll Crusher Flyer - Metric

Case Studies

Irish Salt Mining & Exploration Crushes Salt Production Goals With McLanahan Roll Crushers

On snowy winter days throughout the United Kingdom, Ireland, Europe and even the United States, roads are being kept clear thanks to salt processed at the Irish Salt Mining & Exploration facility in Carrickfergus, Northern Ireland.   READ MORE

Potash Corp. Allan Finds Success With Unique Crushing Solution From McLanahan

In 1968, Potash Corp. began producing potash at its Allan site, which is located 30 miles east of Saskatoon, Saskatchewan in Canada. The operation consists of both an underground operation and a surface processing plant. The underground operation mines potash ore from layers that are deep beneath the surface – about 3,100 ft. underground. From there, ore is hoisted to the surface and processed to make potash fertilizer.   READ MORE

Simplot and McLanahan Partner Up to Crush Consistency Problems at Utah Phosphate Mine

Since the mid-1960s, this mine in Vernal, Utah has been producing phosphate for agriculture fertilizer. In 2003, the J.R. Simplot Company became sole owner of the property and formed Simplot Phosphates, LLC. The three key ingredients used in the production of this fertilizer are ammonia, sulfur and phosphate ore. READ MORE