1. Main Purpose and Features
The NKYS-500 Portable Rock Direct Shear Machine (a remarkable multi-functional portable tester designed for assessing the mechanical properties of rock and soil) has been meticulously developed to align with national standards, SL264 (Specifications for Rock Tests in Hydraulic and Hydropower Engineering) and JTG E41 (Specifications for Highway Engineering Rock Tests). Utilizing the innovative horizontal push method, this machine excels in conducting direct shear tests on various rock blocks, structural planes (including joints, bedding planes, foliation, or cleavage surfaces), and contact surfaces between concrete (or mortar) and rock. It is also highly effective for shear strength testing between concrete and other composite materials.
Standard:
ASTM D5607-16 Standard Test Method for Performing Laboratory Direct Shear Strength Tests of Rock Specimens Under Constant Normal Force
ISO 12957-1:2005 Geosynthetics - Determination of friction characteristics - Part 1: Direct shear test
ISO/TS 17892-10:2018 Geotechnical investigation and testing - Laboratory testing of soil - Part 10: Direct shear tests
ISRM Suggested Method for Determining Shear Strength from the International Society for Rock Mechanics, 2007 Edition
GB/T 50218-2014 Code for Testing of Soil and Rock in Geotechnical Engineering
GB/T 23561.14-2009 Methods for Physical and Mechanical Properties of Coal and Rock Part 14: Direct Shear Test
SL 264-2001 Specifications for Rock Tests in Hydraulic and Hydropower Engineering
JTG E41-2005 Specifications for Highway Engineering Rock Tests
By ingeniously swapping fixtures, this versatile machine can perform the following assessments:
- Rock deformation test
- Uniaxial compressive strength test
- Tensile strength test
- Point load strength test (suitable for small/mid-sized cores and irregular specimens; the testable compressive strength range spans from: 5 MPa (soft rock) to any hard rock)
- Direct shear test on intact rock specimens (compatible with small/mid-size drill cores or 50×50 mm square columns)
- Direct shear test on structural planes and weak rock (irregular samples)
- Direct shear test on soil (accommodating undisturbed core samples with larger shear areas compared to ring cutters)
- Direct shear test on natural or saturated gravelly soil (gravel size ≤ 2.0 cm)
This extraordinary machine boasts a myriad of impressive features, including its robust yet, exquisitely refined machining, notably compact size, effortless light weight, painless assembly, and unmatched field portability., Moreover, its user-friendly interface ensures, swift and efficient test cycles, and cost-effectiveness.It stands as the perfect choice for conducting field tests, catering to the needs of engineering geology teams, testing organizations, prestigious universities, and cutting-edge research institutions with seamless adaptability.
2. Applications
The versatility of this machine allows it to be employed in both field and laboratory settings for a multitude of test types, including:
- Precise rock deformation analysis
- Uniaxial compression assessment
- Tensile (splitting) strength evaluation
- Point load strength measurement
- Direct shear testing on both intact and irregular rock surfaces
- Direct shear analysis on structural planes and weak rock formations
- Comprehensive shear strength testing of soil and gravelly soil.
3. Technical Specifications
Item |
Specification |
Overall dimensions |
770 mm (L) × 430 mm (W) × 670 mm (H) |
Total weight |
300 kg (incl. 2 hand pumps and accessories) |
Vertical jack |
Max force: 500 kN (50 tons), stroke: 60 mm |
Horizontal jack |
Max force: 500 kN (50 tons), stroke: 60 mm |
Sample sizes: |
|
- Rock deformation & compression |
Ø50-56 mm or 50×50 mm; Height: 100-112 mm |
- Tensile test |
Ø50-56 mm; Height: 50-56 mm |
- Point load strength |
40-60 mm in L/W/H; six faces as parallel as possible |
- Direct shear (intact rock) |
Ø50, 56, 71.5, 90 mm cylinders; 50×50 mm square prism |
- Structural plane/weak rock |
L ≤ 160 mm, W ≤ 140 mm, H ≤ 160 mm |
- Soil direct shear |
Ø90 mm, Height: 30 mm |
- Gravelly soil shear test |
Gravel ≤ 2.0 cm; Shear box: 160×140×160 mm (V=35 cm³) |

As a pioneering force in the manufacturing of testing equipment, Jinan Nake Test Equipment Co., Ltd. boasts over 20 years of unparalleled industry expertise. Under the esteemed NAKE Group, we are driven by an exceptional team of over 20 R&D specialists, more than 50 highly skilled production personnel, and a dedicated professional after-sales service team of 10+ members. Our cutting-edge manufacturing and office facilities span over 4,000 square meters, proudly earning us the prestigious certification as a National High-Tech Enterprise in China.
Guided by an ISO 9001:2015-certified quality management system, we implement rigorous control measures across every production stage. By securing approximately 5,000 tons of raw materials annually and harnessing in-house machining and assembly prowess, we enjoy a 3% cost advantage over industry peers, ensuring consistently superior product quality and performance.
In the past five years, Jinan Nake Test Equipment Co., Ltd. has achieved remarkable milestones: an on-time shipment rate of over 98.2%, a product failure rate below a minimal 0.3%, and a rework rate under 0.28%. These statistics highlight our unwavering dedication to precision, reliability, and excellence. Furthermore, our OEM manufacturing services empower over 20 Chinese exporters, with us producing approximately 600 units of mechanical testing equipment annually, solidifying our leadership within the industry.
Our brand, NAKE Test Equipment, is a name synonymous with excellence across China. Our esteemed products are exported to over 30 countries worldwide. As a direct manufacturer equipped with independent R&D and production capabilities, we offer unmatched technical expertise, product customization, and cost efficiency, setting us apart from distributors and intermediaries in the global market.




After-Sales Service Introduction:
1. We proudly offer a comprehensive one-year warranty for our Customized Tensile Testing Machine, ensuring peace of mind and exceptional durability.
2. Enjoy the benefit of permanent, complimentary software updates that keep your tensile testing machine at the forefront of technology, ensuring precision and efficiency.
3. Experience our commitment to excellence with lifetime maintenance services, guaranteeing your equipment remains in peak condition year after year.
4. Take advantage of our innovative remote video guidance service, offering expert assistance and support from anywhere around the globe at your convenience.
1. Is your company a manufacturer or a trading company?
We are a professional manufacturer of materials testing equipment with independent R&D, production, and assembly capabilities. All core components are machined and assembled in-house, ensuring superior quality control, production efficiency, and cost management. Compared to distributors or intermediaries, we offer greater technical expertise, product customization, and competitive pricing.
2. How do you ensure product quality?
We implement strict quality control measures:
ISO 9001:2015-certified quality management system ensures process stability.
In-house machining and assembly of key components guarantee consistency and reliability.
Over the past five years, our product failure rate has remained below 0.3%, with a rework rate under 0.28%, significantly outperforming industry averages.
3. What is your typical lead time?
With an efficient production system, we have achieved an on-time delivery rate exceeding 98.2% over the past five years. Lead times vary based on order volume and product type:
Standard models: 15-30 days
Customized products: Lead time depends on design complexity
4. Do you offer OEM or ODM services?
Yes, we provide OEM manufacturing services for 20+ Chinese exporters, producing approximately 600 units of testing equipment annually. We offer custom branding, software interface modifications, and functional upgrades to meet client requirements while ensuring compliance with international standards.
5. What industries are your testing machines used in?
Our testing equipment is widely applied in various industries, including:
Metals & composites
Rubber & plastics
Construction & civil engineering
Aerospace & automotive manufacturing
Research institutes & university laboratories
6. What after-sales services do you provide?
We offer comprehensive after-sales support, including:
Remote technical assistance: Installation guidance, troubleshooting, and maintenance support via phone, email, or video.
On-site services (available in select regions): Professional engineers can provide installation training and repair services if needed.
Spare parts supply: Long-term availability of original factory parts to ensure stable equipment operation.
Equipment upgrades & software updates: Functional upgrades and software optimizations as per customer needs.
7. How can I request a quote or place an order?
You can contact us through:
Phone/Email Inquiry: Provide your specific requirements, and our sales team will respond within 24 hours.
Custom Solutions: If you have special testing needs, our engineering team can offer tailored solutions and detailed quotations.
8. What are your competitive advantages over industry peers?
Full in-house production for superior quality control: Key components are machined in-house, ensuring consistency and durability.
Manufacturing cost advantage: Our optimized supply chain results in a 3% lower production cost compared to industry averages, providing a cost-effective solution for customers.
Exceptional delivery performance: 98.2%+ on-time delivery rate, ensuring smooth project execution.
Global market experience: Products exported to 30+ countries, meeting multiple international standards.