NKYJZ-500E-1000E-1500E Computer Controlled High Strength Bolt Torque Axial Force Torsion Testing Machine: Experience the pinnacle of precision engineering with our NKYJZ series. This robust and state-of-the-art testing machine is meticulously designed for those who demand unparalleled accuracy and reliability in testing high-strength bolts. Its advanced computer-controlled system ensures seamless operation, providing comprehensive data analysis for torque, axial force, and torsion, making it an indispensable tool for rigorous fastener testing. Elevate your testing capabilities today with the NKYJZ-500E-1000E-1500E.
Standard:
EN 14399-2:2005
High-strength structural bolting assemblies for preloading - Part 2: Suitability test for preloading.
ISO 14399-2
High-strength structural bolting assemblies for preloading - Part 2: Suitability test for preloading.
GB/T 16823.2-1997
General rules for tightening threaded fasteners - Part 2: Preload.
GB/T 50205-2020
Code for acceptance of construction quality of steel structures.
NB/T 31082-2016
High-strength bolting assemblies for wind turbine tower flanges.
GB/T 3098.1-2010
Mechanical properties of fasteners - Part 1: Bolts, screws, and studs.
GB 50205-2020
Standard for construction quality acceptance of steel structures.
This advanced machine excels in testing the axial force, torque, and torque coefficient of large hexagon head high-strength bolt assemblies. It covers sizes from M16, M20, M22, M24, M27, and M30,offering a seamless real-time display and printing option.
As soon as the axial force reaches the designated standard value, the machine smartly pauses for one second and then reverses to release the specimen.
With cutting-edge automation, the tester calculates the torque coefficient effortlessly, leveraging the measured axial force and torque, and presents the result instantaneously.
After completing a batch, the device astutely computes the average axial force, torque, torque coefficient, standard deviation, and coefficient of variation for that group of specimens, ensuring precision and reliability.
The sophisticated control system boasts storage capabilities for 32 sets of test data,which can be retrieved and printed on demand, offering unparalleled convenience.
Optional Function:
Enhance your testing capabilities by equipping the device with an additional torque-shear type electric wrench,enabling comprehensive preload testing on torque-shear type bolts.
Technical Parameters
Parameter |
Specification |
Power Supply Voltage |
Control System: 220V AC; Motor: 380V AC |
Motor Power |
0.37 kW |
Motor Speed |
0.5 r/min |
Axial Force Measurement Range |
20-500 kN |
Torque Measurement Range |
20-2000 N·m |
Bolt Diameter Range |
M16 - M30 |
Bolt Length Range |
55 mm - 280 mm |
Test Accuracy |
Axial Force ±1.0%; Torque ±1.0% |
Weight |
Approx. 500 kg |
Operating Conditions
- Ambient temperature: 10-35°C, with fluctuations maintained under 2°C per hour,
- ensuring consistent operation. Relative humidity:
- ≤80% Voltage fluctuation: held within ±10%
- of the rated voltage; Power supply:380V / 50Hz, three-phase five-wire system, with a power consumption of merely 1.5 kW.
- Free from any significant electromagnetic interference,
- and devoid of surrounding vibrations or corrosive media,
- ensuring operational excellence. Maintain at least 0.7 m of clearance around the machine; keep the workspace pristine, clean, and dust-free,

As a premier leader in the realm of testing equipment, Jinan Nake Test Equipment Co., Ltd. brings over two decades of unparalleled industry expertise. Our esteemed NAKE Group is propelled by a team of more than 20 dedicated R&D specialists, over 50 adept production personnel, and a professional after-sales service team comprising more than 10 enthusiastic members. Our cutting-edge manufacturing and office facilities, sprawling over 4,000 square meters, reflect our commitment to innovation and excellence. Proudly recognized as a National High-Tech Enterprise in China, we stand at the forefront of technological advancement.
With the prestigious ISO 9001:2015-certified quality management system, we exercise meticulous control over each phase of production. By sourcing approximately 5,000 tons of premium raw materials annually and harnessing our in-house machining and assembly prowess, we secure a remarkable 3% manufacturing cost advantage over industry peers, all while ensuring exceptional product consistency and reliability.
Over the past five years, our dedication to precision and excellence has been evident in our remarkable achievements: an on-time shipment rate surpassing 98.2%, a product failure rate of less than 0.3%, and a rework rate below 0.28%. These figures are a testament to our unwavering commitment to delivering reliability and superior quality. Moreover, we proudly offer OEM manufacturing services for over 20 Chinese exporters, producing approximately 600 units of mechanical testing equipment annually, thereby solidifying our leadership and expertise in the field.
Our brand, NAKE Test Equipment, commands widespread recognition across China, with our innovative products reaching customers in over 30 countries worldwide. As a direct manufacturer endowed with independent R&D and production prowess, we provide distinct advantages over distributors and intermediaries, offering unparalleled technical expertise, bespoke product customization, and unmatched cost efficiency.




After-Sales Service Introduction: At Jinan Nake Test Equipment Co., Ltd., we pride ourselves on our exemplary after-sales service, ensuring you receive unwavering support and satisfaction with our Customizable Friction Coefficient Testing Machine for Fastener Testing.
1. One Year Product Warranty: Our commitment to quality is backed by a comprehensive one-year warranty, offering you peace of mind and confidence in the durability and performance of your Customizable Friction Coefficient Testing Machine.
2. Permanent Free Software Updates: Stay ahead with our permanent free software updates, ensuring your testing machine is equipped with the latest features and innovations for optimal performance and accuracy.
3. Permanent Maintenance Services: Benefit from our permanent maintenance services, designed to keep your equipment in peak condition, minimizing downtime and maximizing productivity.
4. Remote Video Guidance: Experience convenience with our remote video guidance, providing you with expert assistance and instructions to address any queries or challenges you may face, right at your fingertips.
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.