Small High-Speed Swing Grinder for Laboratory Sample Preparation

Product Overview

This high-speed swing grinder delivers rapid, fine comminution of dry laboratory samples. Engineered for intermittent use, the system combines a powerful motor with precisely machined cutting blades to achieve particle sizes from coarse fragments down to ultra-fine powders. Its compact form and straightforward operation make it an indispensable tool for material scientists, quality control technicians, and formulation researchers who require consistent sample preparation with minimal time investment. From incoming raw material inspection to final product quality checks, this mill streamlines sample prep, allowing analysts to focus on data rather than lengthy grinding procedures.

Principle of Operation

The grinding mechanism relies on impact and shear forces generated by a rotor spinning at 25,000 revolutions per minute. Material is loaded directly into the stainless steel grinding chamber, and once the O-ring sealed lid is secured, the timer knob activates the motor. High-speed rotation of the alloy steel blades violently collides with the sample, shattering it against the chamber wall and cutting it into progressively finer particles. Grinding time ranges from a few seconds to three minutes; longer cycles yield finer powders, allowing the operator to target a desired fineness between 30 and 300 mesh. When the set time elapses, the motor stops automatically, and the chamber can be opened to collect the homogeneous powder.

This sealed, dust-free process eliminates sample loss and cross-contamination, protecting both the operator and the laboratory environment. The unit’s robust construction and overload protection ensure reliable performance even when processing hard or fibrous materials, while the simple design facilitates quick cleaning between batches. Over the long term, this grinder has proven its reliability in demanding settings—from busy analytical labs to retail pharmacies—thanks to its durable materials and precision engineering.

Key Features

• Ultra-High-Speed Motor: The 0.9 kW motor accelerates to 25,000 RPM in an instant, providing the intense kinetic energy needed to pulverize tough botanical, mineral, and chemical samples. The motor is thermally protected and designed for intermittent duty, delivering consistent power without overheating during normal grinding cycles. Its efficient cooling design prevents overheating during back-to-back runs, maximizing uptime in high-throughput labs.
• Seamless Stainless Steel Chamber: Fabricated from 304 stainless steel via a one-step deep-drawing process, the 500 mL chamber has a smooth, crevice-free interior that prevents material build-up and simplifies cleaning. The O-ring seal locks in dust and sound, maintaining a clean workspace and reducing noise levels. The smooth finish also meets hygienic requirements for pharmaceutical and food applications.
• Hardened Alloy Steel Blades: The blade set is made from high-grade alloy steel, heat-treated for exceptional hardness and wear resistance. These blades maintain their cutting edges over thousands of grinding cycles, ensuring consistent particle size reduction and long equipment life.
• Precision Timer Control: A mechanical timer knob allows operators to dial in grinding durations from 1 second to 3 minutes with repeatable accuracy. Unlike electronic controls that can fail or drift, the mechanical timer is robust and requires no calibration, ensuring years of trouble-free operation. This feature is critical for achieving reproducible particle size distributions across multiple samples, a key requirement in quality assurance and research protocols.
• Broad Capacity Handling: With a grinding capacity ranging from 20 grams to 250 grams, the unit accommodates both micro-scale analytical preparations and moderate batch processing. This flexibility reduces the need for multiple mills in a single laboratory.
• Compact and Portable Design: Measuring only 190 × 210 × 330 mm and weighing 4.5 kg, the grinder occupies minimal bench space and can be easily moved between workstations. A standard 220 V plug means no special electrical installation—just place it where it is needed and start grinding.
• Integrated Safety Systems: An overcurrent fuse protects the motor from damage due to accidental overloading. Additionally, the fully enclosed grinding chamber prevents any contact with the rotating blades during operation, ensuring user safety.
• Low Vibration, Quiet Operation: The dynamically balanced motor and rigid housing minimize vibration, enabling the grinder to run smoothly on any stable surface. Noise emission is low enough for use in shared laboratory spaces without causing disturbance.

Applications

Technical Specifications

Why Choose This Product

• Engineered for Longevity: Every component, from the deep-drawn 304 stainless steel chamber to the heat-treated alloy steel blades, is selected for durability in rigorous laboratory settings. The one-step deep drawing process eliminates weak points and crevices, ensuring structural integrity and facilitating compliance with good laboratory practices (GLP). This attention to material science ensures years of reliable operation with minimal maintenance, lowering the total cost of ownership.
• Unmatched Process Control: The combination of a precise mechanical timer and the ability to adjust cycle duration gives users full command over final particle size. This repeatability is essential for meeting strict specification requirements in regulated environments like pharmaceuticals and food testing.
• Operator Safety and Cleanliness: The fully enclosed, gasket-sealed grinding process prevents dust release, protecting both the analyst and the workspace. Overcurrent protection and a direct on/off timer switch eliminate the risk of accidental start-up or motor damage, reinforcing a safe work environment.
• Versatility Across Industries: Whether grinding soft plant material, hard minerals, or brittle chemicals, this grinder adapts without compromising performance. Its wide capacity range and tolerance for diverse material properties make it a versatile asset in multi-user laboratories. While the standard configuration suits most needs, we also offer custom blade geometries and chamber coatings for specialized applications—contact our engineering team to explore bespoke solutions.
• Compact, Plug-and-Play Design: Unlike large milling equipment, this grinder requires no permanent installation, compressed air, or special infrastructure. Its small size and standard power plug allow immediate deployment, facilitating flexible lab layouts and reducing setup costs.

Invest in a grinding solution that combines precision, durability, and exceptional support to elevate your laboratory’s productivity. Contact us today to request a quote or to discuss custom configurations that match your specific sample preparation requirements.