Double roller crusher

The Double roller crusher from Shanghai Kunke Road&bridge Machinery Co., Ltd. is a laboratory-grade machine designed for crushing minerals and rocks with medium to low hardness, up to a compressive strength of 700kg/cm³. It features two parallel horizontal rollers driven by a V-belt and gear system, with one fixed shaft and one adjustable shaft mounted in a sliding bearing seat. The gap between rollers is manually adjusted via a hand wheel and thread sleeve, allowing precise control over output particle size, typically ranging from 1mm to 10mm depending on feed material and setting.

The machine includes a spring-loaded safety mechanism that allows the adjustable roller to retract when non-crushable material enters the chamber, preventing damage to gears or bearings. The hopper is lined with wear-resistant material to reduce abrasion and ensure material flows directly onto the rollers. Standard construction uses cast iron and carbon steel components, with surface treatments for corrosion resistance in dusty environments. This design is typical for small-scale mineral processing labs and research facilities where consistent, repeatable crushing is required without the need for high throughput.

This crusher is commonly purchased by university geology departments, mining research labs, and small-scale mineral processors in Asia and Eastern Europe who require sample preparation equipment. Buyers typically order single units for lab use, with packaging in standard export wooden crates. Trade terms are usually FOB Shanghai, with lead times of 15 to 25 days after deposit. No electrical certification is listed; buyers must confirm local voltage compatibility before use.

Shanghai Kunke Road&bridge Machinery Co., Ltd. is a manufacturer based in Pudong New Area, Shanghai, with a physical address listed on trade platforms. The company's trust tier is harbor, indicating basic verification of business registration and address, but no certifications, client list, or years in operation are disclosed. The supplier responds to inquiries at a rate of 0.00% and has no recorded average response time, suggesting limited or no active sales support.

The listing confirms the company produces double roller crushers for laboratory use, with no mention of export experience, after-sales service, or technical documentation beyond basic operating principles. There is no evidence of ISO certification, factory audits, or R&D activity. Buyers should treat this as a direct manufacturer with minimal public profile and verify all technical claims before purchase.