Lab Automatic Desktop Grinder
Automatic desktop grinders are primarily laboratory-grade machines designed to automate the uniform grinding and mixing of small chemical or compound batches down to micron or nanometer granularity.
Mortar Speed: 0 – 10 rpm
Pestle Speed: 0 – 80 rpm, adjustable
Application: It is widely used in the grinding of micro powders for superhard materials, electronic materials, resins, food, pharmaceuticals, and chemicals.
Lab Automatic Desktop Grinder Overview
A laboratory automatic desktop grinder is a specialized compact R&D instrument designed for precision grinding, milling, and homogenization of materials. Featuring an intelligently controlled mortar and pestle system with adjustable pressure and speed parameters, it efficiently processes various chemical samples into uniform micron- or nanometer-scale powders. Its space-saving benchtop configuration makes it ideal for laboratories with limited space. As a key pre-processing tool in modern labs, it plays a vital role in pharmaceutical R&D, materials science, quality control, and related fields.
Our SFM-8 agate mortar grinder is a popular laboratory automatic desktop grinder. It features an innovative grinding system composed of a high-purity agate mortar, a precision grinding pestle, and an intelligent scraper, achieving ultra-fine grinding from the micron to nano scale. With its digital control system, researchers can precisely adjust grinding speed and time, meeting requirements from coarse particle crushing to ultra-fine powder preparation.
Key Features of SFM-8 Desktop Agate Mortar Grinder
- Grinding particles can reach the micron level, and particle size can be further refined by adjusting the grinding time.
- The rotational speed and duration of the grinding rods can be precisely controlled to meet the grinding requirements of samples with varying hardness levels.
- Suitable for grinding a wide range of samples, including ultra-hard materials, electronic powders, resin powders, food powders, pharmaceutical powders, and chemical powders.
- The operation process is simple, and the device can be placed inside an argon-filled glove box to perform grinding operations in an inert environment
Advantages
Key Advantages
- High Purity and Contamination-Free: Both the mortar and pestle are made of natural agate (primarily SiO₂), which is hard, wear-resistant, and chemically stable, thereby eliminating metal-ion contamination. They are suitable for trace analysis and the preparation of high-purity samples.
- Uniform and Fine Particle Size: The combined motion of the mortar’s slow rotation (10 rpm) and the pestle’s rapid orbital and rotational motion (0–80 rpm) ensures that particles are subjected to uniform force; the grinding fineness can reach themicron level, and for some materials, thenanometer level.
- Automated, Precise Control: Supports digital setting of grinding rod speed and grinding time (0–900 minutes), eliminating labor-intensive manual operations and ensuring experimental reproducibility.
- Smooth, Low-Noise Operation: Driven by a gear motor, it requires no foundation and can be placed anywhere; it operates smoothly and produces minimal noise.
Structures & Working Principle
SFM-8 Lab Automatic Desktop Grinder Structure
The SFM-8 Agate Mortar Grinder primarily consists of three core components: the pestle, the agate mortar, and the scraper, which work in conjunction with the drive and control mechanisms to achieve automated grinding.
- Agate Mortar: Serving as the container for samples, it rotates clockwise during operation. It typically has a diameter of Φ120 mm and a depth of approximately 34 mm.
- Pestle: Placed inside the mortar, it crushes and grinds solid particles. Its rotational speed can be precisely adjusted within the range of 0–80 rpm.
- Scraper: Fixed in place, it scrapes particles adhering to the rim of the mortar back toward the center, ensuring uniform grinding with no dead zones.
SFM-8 Lab Automatic Desktop Grinder Working Principle
During operation, the agate mortar rotates clockwise, while the grinding rod crushes and refines the solid particles inside. At the same time, a scraper pushes particles from the edges of the mortar back into the grinding area, ensuring that all particles are ground evenly. This process ultimately produces a fine powder with a uniform particle size; the final product can reach the micron level, and in some cases, the nanometer level. The entire process supports automated control.s.
Technical Parameters
| Model | SFM-8 |
| Working Voltage | Input: 24V DC; 110- 240V AC to 24V DC power adapter is included |
| Max. Power Consumption | 150W |
| Drive Power | Mortar: 10W; Pestle: 25W |
| Grinding Bowl | Agate Mortar & Agate Pestle included; Mortar Dimensions: Ø120mm x 34mm Dia. |
| Grinding Speed & Pressure | Mortar: 0 – 10rpm; Pestle: 0 – 80rpm adjustable; Grinding pressure is adjustable by spring |
| Grinding Volume | Measure approximately 30 mL of powder using a graduated cylinder; the weight is approximately 45 g based on salt. |
| Grinding Time | 1–900 min |
| Control Method | Panel buttons |
| Dimension | 300mm(L) x 250mm(W) x 530mm(H) |
| Net Weight | 18kg |
| Package Dimension | 460mm(L) x 460mm(W) x 610mm(H) |
| Package Weight | 22kg |
| Warranty | One-year limited warranty with lifetime technical support |
| Compliance | The machine is a safe 24VDC input, which can be used without any safety certification |
| Application Note | This compact automatic grinder can be put into a glove box via an air-lock port and operate under inert gas |
