Introducing the NKYJZ-500E-1000E-1500E, the cutting-edge Computer Controlled High Strength Bolt Torque Axial Force Torsion Testing Machine. Designed to perfection, this machine offers unparalleled precision and reliability for testing the torque, axial force, and torsional characteristics of high-strength bolts. Elevate your performance evaluation with this state-of-the-art equipment from Jinan Nake Test Equipment Co., Ltd., where innovation meets efficiency.
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 cutting-edge machine is skilled in evaluating axial force, torque, and torque coefficient of substantial hexagon head high-strength bolt assemblies across sizes M16, M20, M22, M24, M27, and M30, featuring a real-time display for instant insights and seamless printing capabilities.
Ingeniously designed, the device pauses automatically for one second once the axial force meets the predetermined standard, then skillfully reverses to release the specimen.
The system brilliantly calculates the torque coefficient, leveraging the measured axial force and torque, and showcases the results instantaneously on the display.
After completing a series of tests, the device efficiently computes the average axial force, average torque, average torque coefficient, standard deviation, and coefficient of variation for the entire batch of specimens, ensuring precision and reliability.
The advanced control system is capable of storing and cyclically refreshing 32 test data sets, which are effortlessly accessible and ready for printing whenever needed.
Optional Function:
With the addition of an optional torque-shear type electric wrench, the device is proficient in conducting preload tests on torque-shear type bolts, expanding its versatility.
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, maintaining stability with fluctuations not surpassing 2°C per hour
- Relative humidity: ≤80%
- Voltage fluctuation is maintained within ±10% of the rated voltage, ensuring consistent performance
- Power supply: 380V / 50Hz, featuring a robust three-phase five-wire system, with a power consumption of 1.5 kW for efficient energy usage
- The environment must be free from significant electromagnetic interference
- Ensure absence of vibrations or corrosive media in the surrounding area
- Maintain at least 0.7 m of clearance around the machine; the work area should be meticulously clean and dust-free for optimal operation

As a foremost leader in the world of testing equipment, Jinan Nake Test Equipment Co., Ltd. shines with over two decades of unparalleled industry expertise. Our esteemed NAKE Group thrives with a dedicated team of more than 20 seasoned R&D specialists, 50+ highly skilled production experts, and a top-tier professional after-sales service team exceeding 10 members. Our cutting-edge facilities, sprawling over 4,000 square meters, anchor us as a National High-Tech Enterprise in China, embodying our commitment to innovation and excellence.
With the prestigious ISO 9001:2015 certification under our belt, we enforce rigorous quality control across every production phase. Procuring approximately 5,000 tons of raw materials annually, we maintain robust in-house machining and assembly capabilities. This strategic advantage grants us a remarkable 3% manufacturing cost edge over competitors, while ensuring our products are of unmatched consistency and quality.
In the last five years, our dedication to precision, reliability, and excellence is evident in our impressive metrics: an on-time shipment rate soaring above 98.2%, a product failure rate plummeting below 0.3%, and a rework rate dwindling under 0.28%. Additionally, we bolster over 20 Chinese exporters with superior OEM manufacturing services, yielding approximately 600 units of mechanical testing equipment each year, fortifying our position as a vanguard in the industry.
Our esteemed brand, NAKE Test Equipment, is celebrated across the vast expanse of China and beyond, with an export reach extending to over 30 countries worldwide. As a direct manufacturer boasting independent R&D and production prowess, we offer unparalleled advantages over distributors and intermediaries, providing technical expertise, bespoke product customization, and exceptional cost efficiency.




After - Sales Service introduction:
1. Enjoy peace of mind with our one-year comprehensive product warranty, ensuring your investment is protected.
2. Benefit from our commitment to continuous improvement with permanent free software updates, keeping your equipment ahead of the curve.
3. Experience uninterrupted performance with our permanent maintenance services, dedicated to ensuring your machine operates at its best, always.
4. Leverage our cutting-edge remote video guidance for real-time support and solutions, from installation to troubleshooting.
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.