HMM-400A Ball Mill Grinder

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HMM-400A Ball Mill Grinder

Product ID：SYFSymqm0048

Price: Please inquire PDF Format

Supply Ability:50 SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberHMM-400A

Brand NameTJHENGAO

Payment TermsTT，PAYPAL，Alibaba.com Pay

HMM-400A Ball Mill Grinder
Product Introduction
The HMM-400A Ball Mill Grinder is a compact laboratory sample grinding machine that uses advanced oscillatory grinding technology for the rapid grinding, pulverizing, mixing and homogenization of small quantities of hard or difficult-to-process samples.
During operation, the grinding jars oscillate horizontally, causing the grinding balls to generate high-impact energy. The resulting impact and friction forces rapidly break down the sample. Depending on the material and operating conditions, the processed sample can reach a particle size of approximately 5 μm.
The HMM-400A supports both dry and wet grinding and is suitable for samples such as bones, tablets, grains and other complex or hard materials.

Performance Features
• Dual grinding platforms: Two grinding jars can operate simultaneously with excellent consistency and repeatability.
• Rapid grinding: High-energy impact and friction enable fast sample pulverization.
• Fine output: Processed particle size can reach approximately 5 μm.
• Dry and wet grinding: Supports different sample preparation requirements.
• Adjustable grinding parameters: Grinding time and oscillation frequency can be preset.
• Program memory: Up to 6 operating programs can be stored for repeatable testing.
• LED status display: Displays pulse indicators, time, speed and operating status.
• Multiple jar materials: Different grinding jar materials can be selected according to sample characteristics.
• Closed grinding system: Sealed grinding jars help prevent cross-contamination.
• Leak-resistant design: Special spiral lids reduce liquid leakage during wet grinding.
• Low heat generation: Short grinding times help minimize temperature rise and protect heat-sensitive samples.
• Easy maintenance: Grinding jars can be quickly removed, cleaned and reinstalled.

Working Principle
The HMM-400A laboratory ball mill grinder uses horizontal oscillation to generate high-energy grinding.
The sample and grinding balls are placed inside a sealed grinding jar. During operation, the grinding jar oscillates at a preset frequency. Due to inertia, the grinding balls move rapidly inside the jar and generate strong impact forces against the sample and the curved inner surface of the grinding jar.
The combined impact and friction forces progressively break, grind and homogenize the sample. By adjusting the grinding frequency and time, users can optimize the process for different materials and particle-size requirements.
The closed grinding jar minimizes material loss and cross-contamination. For wet grinding, the spiral sealing lid helps prevent liquid leakage while allowing efficient mixing and pulverization.

Technical Parameters

Parameter	Specification
Maximum Feed Size	6 mm
Final Particle Size	5 μm
Grinding Jar Volume	25 mL / 35 mL
Maximum Sample Volume	10 mL
Grinding Time	0–99 min
Frequency	3–20 Hz
Power	180 W
Number of Grinding Platforms	2
Grinding Method	Dry and wet grinding
Dimensions	421 × 350 × 218 mm

Applications
The HMM-400A laboratory ball mill is suitable for sample preparation in:
• Biological laboratories: Bone and biological tissue samples
• Pharmaceutical research: Tablets and pharmaceutical materials
• Food and agricultural testing: Grains, seeds and other plant materials
• Materials research: Hard and difficult-to-process materials
• Chemical laboratories: Mixing and homogenization of small samples
• Research and development: Fine grinding and sample pretreatment
• Quality control laboratories: Reproducible sample preparation before analysis

HMM-400A vs. Conventional Laboratory Grinders

Feature	HMM-400A Ball Mill Grinder	Conventional Laboratory Grinder
Grinding Method	High-energy horizontal oscillation	Varies
Grinding Modes	Dry and wet	Often primarily dry
Grinding Platforms	2 simultaneously	Usually 1
Final Particle Size	Up to approximately 5 μm	Depends on equipment
Program Memory	6 programs	Often limited
Frequency Adjustment	3–20 Hz	Usually limited
Grinding Time	0–99 min	Varies
Cross-Contamination	Closed grinding jars reduce risk	Depends on design
Wet Grinding Sealing	Spiral leak-resistant lid	Depends on configuration
Sample Heating	Short grinding time helps reduce heating	May generate more heat
Maintenance	Easy jar removal and cleaning	Varies

Why Choose HMM-400A?
The HMM-400A ball mill grinder combines high-energy oscillatory grinding, dual-platform operation and programmable control in a compact laboratory instrument. It is particularly useful for small quantities of hard, complex or difficult-to-process samples that require rapid grinding and homogenization.
Its sealed grinding jars, selectable jar materials, wet/dry grinding capability and six-program memory make the HMM-400A a practical solution for reproducible laboratory sample preparation.

Frequently Asked Questions (FAQ)
1. What is the HMM-400A used for?
The HMM-400A is used for rapid grinding, pulverizing, mixing and homogenization of small quantities of laboratory samples.
2. What types of samples can be processed?
It can process a variety of hard or difficult samples, including bones, tablets, grains and other complex materials.
3. What is the maximum feed particle size?
The maximum feed size is 6 mm.
4. What particle size can the HMM-400A achieve?
The final sample particle size can reach approximately 5 μm, depending on the material and grinding conditions.
5. Can the HMM-400A perform wet grinding?
Yes. The HMM-400A supports both dry and wet grinding. Its specially designed spiral lid helps prevent liquid leakage during wet grinding.
6. How many grinding jars can operate simultaneously?
The machine has two grinding platforms, allowing two grinding jars to operate simultaneously with good consistency and repeatability.
7. Can grinding parameters be programmed?
Yes. Grinding time and frequency can be adjusted, and the instrument can store up to six operating programs.
8. What is the grinding jar capacity?
Available grinding jar volumes are 25 mL and 35 mL, with a maximum sample volume of 10 mL.

Frequently Asked Questions (FAQ)
1. What is the HMM-400A used for?
The HMM-400A is used for rapid grinding, pulverizing, mixing and homogenization of small quantities of laboratory samples.
2. What types of samples can be processed?
It can process a variety of hard or difficult samples, including bones, tablets, grains and other complex materials.
3. What is the maximum feed particle size?
The maximum feed size is 6 mm.
4. What particle size can the HMM-400A achieve?
The final sample particle size can reach approximately 5 μm, depending on the material and grinding conditions.
5. Can the HMM-400A perform wet grinding?
Yes. The HMM-400A supports both dry and wet grinding. Its specially designed spiral lid helps prevent liquid leakage during wet grinding.
6. How many grinding jars can operate simultaneously?
The machine has two grinding platforms, allowing two grinding jars to operate simultaneously with good consistency and repeatability.
7. Can grinding parameters be programmed?
Yes. Grinding time and frequency can be adjusted, and the instrument can store up to six operating programs.
8. What is the grinding jar capacity?
Available grinding jar volumes are 25 mL and 35 mL, with a maximum sample volume of 10 mL.