Model NKYJZ-500E-1000E-1500E: The Pinnacle of Precision - Computer-Controlled High Strength Bolt Torque, Axial Force, and Torsion Testing Machine for Unmatched Accuracy
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
Effortlessly evaluate the axial force, torque, and torque coefficient of extensive hexagon head high-strength bolt assemblies, available in sizes M16, M20, M22, M24, M27, and M30, enhanced by a real-time display and printing feature.
Upon reaching the designated axial force, the machine smartly pauses for a second, then reverses to release the specimen, ensuring precision.
With cutting-edge technology, the tester automatically computes the torque coefficient, utilizing the recorded axial force and torque, and offers instant display of results.
After a batch of tests, the system intelligently calculates the average axial force, average torque, average torque coefficient, standard deviation, and coefficient of variation for the specimens, ensuring thorough analysis.
The sophisticated control system stores and cyclically updates 32 comprehensive sets of test data, available for retrieval and printing at any moment.
Optional Function:
For enhanced functionality, consider an additional torque-shear type electric wrench, allowing the device to adeptly perform 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 carefully regulated to not exceed 2°C per hour
- Relative humidity: ≤80%
- Voltage fluctuation: precisely maintained within ±10% of the rated voltage
- Power supply: 380V / 50Hz, three-phase five-wire system, with power consumption efficiently managed at 1.5 kW
- Immunity from significant electromagnetic interference
- Free from surrounding vibrations or corrosive media
- Requires at least 0.7 m of clearance around the machine; workspace must be clean and dust-free for optimal operation

As a pioneering force in the world of testing equipment, the NAKE Group stands tall with over two decades of unparalleled industry experience. Our formidable team comprises more than 20 innovative R&D specialists, over 50 masterful production professionals, and a dedicated after-sales service crew exceeding 10 members, all driven by a passion for excellence. Situated in expansive state-of-the-art facilities covering over 4,000 square meters, our dedication to cutting-edge technology and quality has earned us the prestigious recognition as a National High-Tech Enterprise in China.
Boasting an ISO 9001:2015-certified quality management system, we rigorously oversee every facet of our production process. Our strategic sourcing of around 5,000 tons of premium raw materials each year, coupled with our in-house machining and assembly prowess, grants us a competitive edge with a 3% cost advantage over industry competitors, all while ensuring our products consistently surpass the highest standards of quality.
In the last five years, we have astounded our clients with an outstanding on-time shipment rate of over 98.2% and a remarkable product failure rate of less than 0.3%. Our rework rate stands impressively below 0.28%, a testament to our unwavering commitment to precision, reliability, and superior quality. Moreover, our OEM manufacturing services cater to over 20 Chinese exporters, with an impressive annual production of approximately 600 units of mechanical testing equipment, solidifying our status as industry leaders.
Our brand, NAKE Test Equipment, enjoys a stellar reputation throughout China, with our innovative products making waves in over 30 countries around the globe. As a direct manufacturer, our independent R&D and production capabilities provide unparalleled advantages in technical acumen, bespoke product customization, and cost-effectiveness, outshining distributors and intermediaries with ease.




After - Sales Service Introduction: At Jinan Nake Test Equipment Co., Ltd., we are dedicated to offering unparalleled support long after your purchase. Our comprehensive after-sales services are designed to ensure your complete satisfaction and the seamless operation of your products.
1. One-Year Product Warranty: Enjoy peace of mind with our robust one-year warranty, which covers any manufacturing defects, ensuring your Customized Torque Testing Machine operates flawlessly.
2. Permanent Free Software Updates: Stay ahead with our lifetime commitment to keeping your software at the cutting edge with complimentary updates, enhancing both functionality and performance.
3. Permanent Maintenance Services: Benefit from our ongoing maintenance services, ensuring your equipment remains in pristine condition and continues to perform at optimal levels throughout its lifespan.
4. Remote Video Guidance: Experience the convenience of tailored assistance with our remote video guidance, providing you with expert support and solutions wherever you are.
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.