Bond Test Machines

High-precision laboratory and process equipment for measuring abrasion resistance, impact strength, hardness, and grindability according to Bond testing methods.

LAARMANN offers a complete range of Bond Test Machines designed to deliver accurate and repeatable results for mineral processing, mining, and material research applications. Our systems support abrasion, impact, and grindability testing to help optimize comminution processes and ensure consistent material quality.

Bond index testing is a process used in mining and mineral processing to determine the hardness and grindability of ores. This test helps in evaluating the energy required for comminution, which is the process of reducing the size of the ore particles.

LMBAT1000 Bond Abrasion Tester


Abrasion test machine for testing the material resistance characteristics.

  • Digital program for Bond abrasion testing

Product Overview

LM-BAT1000 bond abrasion tester

LMBIT Bond Impact Tester


Laboratory Impact Tester to determine the crushability test developed by F.C. Bond.

  • Pendulum mounted hammer with scale
  • Feed size: 50–76 mm

Product Overview

LM-BIT bond impact tester

LMBRM Ball and Rod Mill


The LMBRM is suitable for normal grinding and Bond testing applications.

  • Max. volume of grinding barrel: 150–450 L
  • Rotation speed: 10–70 rpm

Product Overview

LM-BRM ball and rod mill

BOND test machines FAQ (Frequently Asked Questions)

A Bond test evaluates the ability of a material to withstand abrasion, impact and grindability by measuring the energy, force or wear it takes to break or deform the sample.

Bond Test Machines typically follow F.C. Bond’s established protocols for abrasion and crushing work index testing used widely in mining and mineral processing.

These machines handle ores, coal, slags, ceramics, soil, chemicals and a range of industrial minerals for material characterization and process control.

Abrasion testing measures wear resistance under rotating action, while impact testing measures material breakability using forces like pendulum strikes.

Mining engineers, research labs, metallurgists, quality control teams and production facilities use Bond Test Machines for process optimization and material qualification.

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