I. Equipment Overview
The 400×250 double-roll crusher is a small-scale crushing machine widely used in laboratories, building materials processing, and small sand and gravel production lines. Its compact design (approximately 2150×980×800mm) and low energy consumption (equipped with two 5.5kW motors) make it an ideal choice for small and medium-sized projects. This model, named after its 400mm diameter and 250mm length rollers, crushes the material using a two-roller system. The output size can be adjusted from 2 to 8mm using a wedge mechanism.
II. Core Performance Parameters
Processing Capacity: Hourly output of 2-10 tons/hour, depending on material hardness, feed size (recommended ≤20mm), and equipment operating conditions.
Adjustment Flexibility: Mechanical or hydraulic adjustment allows the gap between the rollers to be adjusted to control the output size, down to 0-2mm, to meet varying end product requirements.
Motor Configuration: Standard configuration is dual 5.5kW motors. Some manufacturers offer a 6-stage motor optimization solution to balance efficiency and energy consumption. Applicable Materials: Specializing in high-hardness stone (such as granite and limestone), optimal results are achieved when feed particle size is controlled within 15mm.
III. Market Price and Selection Recommendations
Price Range: The basic 400×250 model is approximately $2,000-3,000 USD, while laboratory-specific models can reach $6,000 USD. The difference is due to material (such as high-manganese steel roller teeth) and additional features (such as a mobile design).
Selection Key Points:
Production Capacity: If production capacity under 5 tons/hour is required, this model offers excellent value for money.
Expansion Requirements: Considering future capacity expansion, consider comparing it to mid-range models such as the 400×400 model.
IV. Industry Application Examples
This equipment excels in processing recycled material from sand and gravel plants and crushing laboratory samples, and is particularly suitable for applications requiring high consistency in finished product particle size. For example, a building materials company uses the 400×250 model to process river pebbles. By adjusting the output particle size, it can switch between sand production and stone crushing, reducing overall costs by 30%.
