Laboratory Double Roller Crusher for Mining Construction Chemical Sample Preparation

Product Overview

This laboratory double roller crusher is a purpose-built, high-performance solution engineered for precise size reduction of medium-hard brittle materials in sample preparation workflows. By combining robust construction with finely controllable crushing parameters, the unit delivers consistent output down to 150 microns, making it essential for research, quality control, and analytical laboratories that demand reproducible results.

The equipment is widely applied across mining, construction, chemical, and material science sectors for processing coal, ores, limestone, gypsum, and similar substances. Its adjustable roll gap and three selectable roll materials—stainless steel, corundum (high alumina ceramic), and nylon—enable users to match crushing behavior to specific material characteristics, minimizing contamination while maximizing throughput up to 300 kg/h.

Built with heavy-duty components including a spring-loaded overload protection system, this crusher maintains continuous, safe operation even when unexpected uncrushable objects enter the feed. A straightforward, maintenance-friendly design and replaceable wear parts ensure long-term reliability and low total cost of ownership, even under demanding daily use.

Key Features

• Precision Adjustable Roll Gap: A mechanical wedge adjustment mechanism allows operators to set the inter-roll spacing with high repeatability, directly controlling the final particle size. This system achieves output granularities down to 150 microns across all roll material options, supporting everything from primary crushing to fine pulverization.
• Spring-Loaded Overload Protection: The movable roll is backed by a calibrated spring assembly. If tramp material enters the crushing zone, the rolls separate instantly, preventing damage to the rolls, bearings, and drive train. Once the obstruction passes, the spring returns the roll to the set gap automatically, minimizing process interruptions.
• Selectable Roll Materials: Three distinct roll constructions are available to address diverse laboratory requirements. Stainless steel rolls offer general-purpose durability and corrosion resistance; corundum (high alumina ceramic) rolls provide extreme wear resistance and zero metal contamination; nylon rolls are ideal for soft, temperature-sensitive, or contamination-critical samples.
• Uniform Output Particle Distribution: Counter-rotating rolls with controlled surface profiles ensure even material feeding and consistent compression/shear forces throughout each pass. This leads to a narrow particle size distribution, critical for analytical repeatability and representative sampling in downstream tests.
• Compact Laboratory Footprint: With approximate overall dimensions of 950 × 620 × 970 mm, the unit fits comfortably on standard laboratory benches or small process tables while delivering industrial-grade crushing force. Its enclosed design also keeps noise and dust within acceptable limits for lab environments.
• Simplified Maintenance and Access: The symmetrical, open-frame construction provides easy access to both rolls, bearings, and drivetrain. Rolls can be removed for resurfacing or replacement without specialized tools, while sealed-for-life bearings minimize lubrication schedules and prevent ingress of process dust.
• Versatile Material Compatibility: From coal and coke to limestone, gypsum, gold ore, and ceramic frits, the crusher handles a broad spectrum of brittle materials with feed sizes up to 20 mm (depending on hardness and number of passes). The throughput of approximately 300 kg/h makes it suitable for both batch and continuous processing in pilot-scale or production-adjacent labs.
• Operator Safety and Low Environmental Impact: Emergency stop controls, a fully guarded crushing chamber, and an absence of high-risk pinch points help operators work safely. Low vibration levels and a drip-proof motor housing contribute to a laboratory-friendly operating profile.

Applications

Technical Specifications

Why Choose This Product

• Engineered for Laboratory Precision: Every component is machined to tight tolerances, ensuring the roll gap remains parallel and stable during operation. This directly translates to consistent particle size output, run after run, giving you confidence in the analytical data derived from your samples.
• Material-Specific Roll Options for Purity: Unlike commodity crushers with a single roll material, this unit offers three distinct options to match your exact sample requirements. By eliminating cross-contamination risks—whether from metal pick-up with stainless steel or abrasion with ceramic—you maintain sample integrity, crucial for trace analysis.
• Built-In Overload Intelligence: The spring release system acts as a mechanical "brain," instantly reacting to tramp material without electronic sensors. This passive safety feature means fewer shutdowns, lower repair bills, and a longer lifespan for the core crushing components, even when processing difficult materials.
• Low Maintenance, High Uptime: From quick-removal rolls to sealed bearings, the design minimizes routine service demands. Spend less time on maintenance and more time crushing, with the peace of mind that spare parts and support are readily available.
• Proven in Harsh Industrial Laboratories: Trusted by mining operations, cement plants, and chemical R&D facilities worldwide, this crusher has demonstrated resilience under continuous heavy use. Its consistent performance in dusty, high-vibration environments makes it a reliable cornerstone of any sample preparation line.

Contact us today to discuss your material requirements and discover how this roller crusher can improve the speed and accuracy of your laboratory processes. Our specialists can assist with selecting the ideal roll material and configuration for your specific application.