Splitting Fixtures for Rock and Concrete Testing

Heavy-Duty Splitting Fixtures for Rock and Composite Shear Testing

NextGen Rock shear fixture - NGA206B - Size

NextGen’s category of high-capacity splitting fixtures is engineered for shear and splitting tests on rock, concrete, and composite specimens. These fixtures are purpose-built for use with hydraulic universal testing machines in demanding environments such as geotechnical labs, mining research centers, and structural materials testing facilities. Designed for compatibility with international standards like GB/T 23561.11, they ensure precise and repeatable performance under loads up to 2000 kN or more.

Each fixture in this category features rugged construction, secure mounting systems (including flanges and positioning pins), and flexible specimen accommodation - supporting standard sizes such as Φ50×50 mm and 50×50×50 mm. Whether testing natural rock or engineered composites, these solutions provide the mechanical stability and test consistency required for accurate material analysis.

The line is built around a single fixture rated to 2000 kN. What decides whether it fits your lab is not the load alone but the mounting and the specimen: it hangs from a flange at the top and a positioning pin at the bottom, needs 17.7″ (450 mm) of test space, and takes cylindrical or cubic samples at the sizes given in the table.

Model NGA206B

Rock Shear Fixture

The NGA206B Rock Shear Fixture is a high-capacity splitting system designed specifically for shear strength testing of rock specimens. With a rated capacity of ≤ 2000 kN, it supports both cylindrical and cubic sample formats, for versatility across geological testing laboratories. The fixture conforms to GB/T 23561.11 standards and is built for use under ambient temperature conditions. Its dual-grip system (flange on top and positioning pin on bottom) ensures stability and accuracy throughout each test cycle.

**Table 1.** NGA206B Rock Shear Fixture
Parameter	Specification
Application	Shear test for rocks
Maximum Force	≤2000 kN
Weight	Upper Grip: 57 lbs (26 kg) Lower Grip: 62 lbs (28 kg)
Connection	Upper: Flange Positioning pin
Working Temperature	Ambient
Standard	GB/T 23561.11
Height (A / B)	8.3″ (210 mm) (Upper and Lower)
Width (C / D)	Upper: 12.2″ (310 mm) Lower: 13.8″ (350 mm)
Minimum Test Space	17.7″ (450 mm)
Specimen Size	Φ50 × 50 mm 50 × 50 × 50 mm

NextGen’s splitting fixture line offers trusted performance for advanced shear and splitting applications under high loads. With heavy-duty design, compatibility with hydraulic UTMs, and adherence to global standards, these fixtures are used for laboratories and industries focused on evaluating the structural integrity of tough materials. Contact NextGen Material Testing Inc. to find the right splitting fixture setup for your testing needs.

For Laboratories

Need Additional Quality Control Equipment to Build Your Laboratory?

Gripping and fixturing is only one part of a complete quality control laboratory. NextGen can help you equip your entire lab with impact testers, notching and broaching systems, cooling chambers, tensile testers, hardness testers, specimen preparation equipment, and other supporting solutions, all coordinated as one complete project.

One partner to equip your complete laboratory
Installation, training, calibration
Support for the life of the equipment

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FAQs

What Does the Splitting Fixture Measure on Rock Specimens?

It measures the shear strength of rock. The fixture is a heavy-duty splitting system built for shear testing of rock specimens to GB/T 23561.11, part of the Chinese series of methods for the physical and mechanical properties of coal and rock.

Shear strength describes how much stress rock can carry along a plane before it slides. With the compressive and tensile strength of the same rock, it gives engineers the parameters they use to assess the stability of slopes, tunnels and underground openings.

The fixture is rated to 2000 kN (449,618 lbf) and works at ambient temperature. It is built for geotechnical laboratories and mining research centers as well as structural materials testing facilities, and the rest of a rock laboratory is covered in our rock mechanics testing equipment range.

What Test Space and Mounting Does the Splitting Fixture Need?

It needs a hydraulic universal testing machine with at least 450 mm of test space. The upper half hangs from a flange and the lower half locates on a positioning pin, a dual-grip arrangement that keeps the setup stable through each test.

Both halves are 210 mm high. The upper half is 310 mm wide and weighs 26 kg (57 lbs), and the lower half is 350 mm wide and weighs 28 kg (62 lbs), so plan for a two-person lift or a hoist when you install it.

Name your frame model when you request a quote, and we will confirm that the flange and pin interface fits before the fixture ships.

Which Specimen Sizes Does the Splitting Fixture Accept?

It takes cylinders of Ø50 × 50 mm and cubes of 50 × 50 × 50 mm, the two standard formats for this fixture.

Cylinders are usually cut from drill core and cubes sawn from block samples, and the standard sets how both are prepared and measured. Shear strength is calculated from the failure load and the area of the shear plane, so accurate dimensions matter as much as the force reading, and flat, square faces keep the load from starting on one edge.

We can also supply the specimen preparation equipment for your laboratory, coordinated as one project with the testing machine and the fixture.

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NG-SHM Class D – Servo-Hydraulic Universal Testing Machine

NG-SHM Class D is a servo-hydraulic universal testing machine for high-force mechanical testing of metals and structural components. Available in 600 kN, 1000 kN, and 2000 kN capacities, it uses an upper actuator and single-zone test space for tension, compression, bending, and shearing. Its long-travel cylinder, wedge hydraulic grips, and rigid guidance system make it suitable for extra-long, high-elongation specimens.

NG-SHM Class C – Servo-Hydraulic Universal Testing Machine

NG-SHM Class C is a servo-hydraulic universal testing machine for high-force metal testing, with capacity options of 600 kN and 1000 kN. Its longer jaw face is designed for tensile testing of stranded steel wire, while the 6-column frame, dual-zone test space, hydraulic wedge grips, quick-return valve, and precision load cell support accurate, repeatable testing of rebar, fasteners, chains, welds, and castings.

NG-SHM Class B – Servo-Hydraulic Universal Testing Machine

NG-SHM Class B is a high-force servo-hydraulic universal testing machine for tensile, compression, and flexural testing of metals and other high-strength materials. Available from 300 kN to 3000 kN, it uses a rigid multi-column frame, dual-zone test space, hydraulic wedge grips, and precise load-cell measurement to support reliable testing of fasteners, rebar, chains, welds, castings, and structural components.

GenMark 500 – Automatic Gauge Length Marking Machine

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NG-EML Series A – Single-Column Universal Testing Machine (50 N – 5 kN)

NG-EML Series A is a compact single-column benchtop universal testing machine for low-force tensile, compression, and flexural testing. Covering 50 N to 5 kN capacity options, it is suited for rubber, plastics, adhesives, films, foams, wires, metals, composites, and consumer products. Its electromechanical frame, high-speed servo actuation, GenTest software, and standards support make it practical for R&D and routine QC.

NG-EML Series B – Dual-Column Universal Testing Machine (100 N – 10 kN)

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NG-EML Series D is a heavy-duty floor-standing electromechanical universal testing machine for high-capacity tensile, compression, and flexural testing. Available from 50 kN to 1000 kN, it is built for high-strength steels, advanced composites, alloys, and challenging research materials. Its rigid dual-column frame, servo direct-drive system, closed-loop control, safety protections, and GenTest software support stable, accurate testing.

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These flexure fixtures are designed for precise bending tests on large, brittle, or high-strength specimens, including metals, ceramics, composites, concrete, and construction materials. Compatible with hydraulic universal testing machines, they support single-point, three-point, and four-point bending configurations with adjustable spans and roller supports. Capacities up to 2000 kN help laboratories evaluate flexural strength, deformation behavior, and structural integrity.

GenTest v3.0 Software for Universal Testing Machines

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Standards

Heavy-Duty Splitting Fixtures for Rock and Composite Shear Testing