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LTB-6 Microcomputer-Controlled Electronic Rock Direct Shear Tester

Building on existing domestic and international products, this testing machine is a next-generation apparatus for rock and concrete testing, developed using dual‑channel AC servo motor drive technology (a domestic first), advanced sensor technology, microcomputer control, and sophisticated software processing. It is capable of conducting direct shear tests on rock structural planes—such as joint surfaces, bedding planes, foliation planes, and cleavage planes—as well as on the rock itself and on the interface between concrete or mortar and rock. Additionally, it can perform shear‑failure strength tests on the bonding interfaces between concrete and other materials.

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Rock and rock mass testing instrument

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lbt@lbt.ltd

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+86-15102211717

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LTB-6 Microcomputer-Controlled Electronic Rock Direct Shear Tester

Description

Product Introduction

The microcomputer-controlled electronic direct shear apparatus for rock was developed in accordance with the national industry standards SL 264‑2001, “Test Procedures for Rocks in Hydraulic and Hydroelectric Engineering,” and JTGE 41‑2005, “Test Procedures for Rocks in Highway Engineering.” Building on existing domestic and international products, this instrument incorporates a pioneering dual‑channel AC servo motor drive system, advanced sensor technology, microcomputer control, and sophisticated software processing—representing a new generation of testing equipment for rocks and concrete. It is suitable for conducting direct shear tests on rock structural planes (such as joint surfaces, bedding planes, cleavage planes, and fracture surfaces), on the rock itself, and on the interface between concrete or mortar and rock; it can also be used to determine the shear‑failure strength of interfaces between concrete and other materials. This testing device has been carefully designed based on feedback from both engineering application and research communities, addressing the inherent drawbacks of conventional electro‑hydraulic servo systems—namely, instability, oil leakage, and high, difficult‑to‑remedy failure rates. The machine features a compact structure, an aesthetically pleasing design, simple maintenance, and user‑friendly operation. The entire testing process can be fully automated via microcomputer under Windows. With AC servo‑based load application, normal‑force control is more precise, stable, and smooth. Key features include:

Technical Specifications

Project	Parameter
Normal load P	6~300 kN (2~100% FS)
Normal-Direction Overload Protection	2% at full load
Normal working stroke	0~100mm
Lateral load Q	6~300 kN (2~100% FS)
Lateral Overload Protection	2% at full load
Horizontal working stroke S	0~150mm
Normal space	≤450mm
Horizontal space	≤200mm
Force control rate adjustment range	0.005–5% FS/s Force‑control rate control accuracy: when the rate is less than 0.05% FS/s, the accuracy is within ±2% of the setpoint; when the rate is ≥0.05% FS/s, the accuracy is within ±0.5% of the setpoint.
Deformation rate adjustment range	0.005–5% FS/s Strain Rate Control Accuracy: For rates less than 0.05% FS/s, the accuracy is within ±2% of the setpoint; for rates equal to or greater than 0.05% FS/s, the accuracy is within ±0.5% of the setpoint.
Displacement rate adjustment range	0.001–50 mm/min displacement rate control accuracy: for rates < 0.5 mm/min, within ±1% of the setpoint; for rates ≥ 0.5 mm/min, within ±0.2% of the setpoint.
Shear loading rate V	0.01 kN/s to 30 kN/s (adjustable)
Payload indication accuracy	±1%
Load indication resolution	1/500,000 of the maximum test force
Displacement measurement accuracy	±1%
Displacement resolution	0.005 μm
Deformation measurement error	±1%
Deformation resolution	1/500,000 of the maximum deformation
Deformation measurement range	2-100%FS
Loading method	Dual‑channel AC servo motor closed-loop load control
Direct shear box	Φ50×50mm (customizable upon request)
Motor power	1.5KW
Operating voltage	~220V
Overall machine weight	900kg
External dimensions	1100×702×1800mm

Related Product

HC-40 Concrete Multi-functional Strength Tester

The HC-40 concrete multi-functional strength tester is a high-performance testing device integrating multiple advanced technologies, specifically designed for evaluating the strength and quality of concrete.

FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

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It measures heat deflection temperature and Vicat softening temperature of plastics, hard rubber, nylon, insulating materials and fiber-reinforced thermosetting composites. Intelligent temperature control guarantees precise heating rate, ideal for plastic raw material incoming inspection and formula development in plastic factories.

Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

What kinds of pipes fit your ring stiffness tester? Can it do long-term creep testing?

This equipment is designed for HDPE, PVC corrugated pipes, plastic drainage pipes and various plastic tubular products. Apart from ring stiffness, ring flexibility and flattening tests, it supports continuous long-term creep tests up to 1000 hours (42 days) as required by industry specifications, widely used for pipe factories and construction quality inspection institutes.

What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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LTB-6 Microcomputer-Controlled Electronic Rock Direct Shear Tester

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