Hardgrove Grindability Index Tester: A Precise and Automated Solution for Testing Material Grindability

DESCRIPTION / TECHNICAL SPECIFICATIONS

Hardgrove Grindability Index Tester: Automated and Standard-Compliant Grindability Testing Solution

In industrial processing and laboratory quality control, accurately determining the grindability of materials is critical for optimizing milling efficiency and production performance. The Hardgrove Grindability Index Tester (HGI Tester) is an advanced laboratory testing instrument engineered to measure and calculate the Hardgrove Grindability Index with high precision, repeatability, and full automation. This tester is built to comply with major international testing standards, including ASTM, GB, and ISO, and specifically conforms to ASTM D 409 requirements.

Core Functionality and Automated Testing Process The HGI Tester utilizes an automated mechanical and digital control system to grind a 50-gram sample inside a precision grinding bowl using 25.4 mm grinding balls under a consistent vertical pressure of 284 ± 2 N. The grinding device streamlines the entire testing workflow through automated mechanical actions—featuring automatic raising, automatic lowering/descent, automatic loading, and automatic revolution counting.

Industrial Applications and Operational Efficiency Benefits Designed for material testing laboratories, industrial quality control departments, and manufacturing facilities requiring ASTM D 409 compliance, this equipment significantly improves laboratory productivity. By automating the mechanical loading and counting stages, it reduces operator workload and eliminates manual operational inconsistencies. Its built-in linear regression calibration curve program automatically calculates correction results and stores test data. Furthermore, the integrated Mini Printer automatically computes and prints the final Hardgrove Grindability Index results immediately upon test completion, accelerating laboratory turnaround times.

Key Performance Features

• 7-Inch Smart Touch Screen Control: Features an intuitive 7-inch touch screen controller that provides a clear display of working status and real-time work progress.
• User-Friendly Interface with Voice Prompts: Supports bilingual input (English and Chinese) alongside Voice Prompt Operation for guided, error-free testing.
• Comprehensive Data Management & Safety: Allows users to store, query, and delete test data effortlessly. Equipped with automatic data backup after power failure, password protection settings, and an accessible Emergency Stop Button for operational safety.
• Low-Noise & Compact Industrial Design: Operates quietly at ≤ 65 dB and features a space-saving footprint (500 x 350 x 700 mm) suitable for modern industrial laboratories.

Technical Specifications

• Standard Compliance: ASTM / GB / ISO & ASTM D 409
• Spindle Speed: 20 ± 1 r/min
• Operating Speed: 60 ± 0.25 r/min
• Grinding Vertical Pressure: 284 ± 2 N
• Grinding Bowl Capacity: 50 g
• Grinding Ball Diameter: 25.4 mm
• Operating Noise: ≤ 65 dB
• Power Supply Voltage: AC 220 V
• Motor Power: 200 W
• Weight: 60 kg
• Dimensions: Length 500 mm x Width 350 mm x Height 700 mm
• Touch Screen Controller: 7 inch

Optimize Your Material Testing Accuracy Today Equip your laboratory and quality control facility with a reliable, automated Hardgrove Grindability Index Tester. Contact our specialist team today for detailed technical consultations, application support, or to request an official quotation tailored to your industrial requirements.