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The shear test (KRL) for tapered roller bearings is one of the widely used shear test methods in domestic and foreign standards. Compared with other shear tests, this method has the characteristics of more obvious shear effect and higher test severity, making it an ideal test method for evaluating the shear stability of heavy-duty oil products. This experiment was conducted under extreme pressure conditions of 5000N, and the tested oil was subjected to 20 hours of shear using SKF32008XQ tapered roller bearings at a speed of 1475 rpm. The shear stability of the oil was evaluated by measuring the viscosity loss of the oil before and after shear.
(2). Test method
NB/SH/T 0845-2010
Measurement of viscosity and shear stability of transmission lubricants - Cone roller bearing testing machine method
CEC L-45-A-99
Sensitivity Shear Stability of Transmission Lubricants
DIN 51350-6
Testing of lubricants - Testing in the Shell four ball tester - Part 6: Determination of shear stability of lubricating oil containing polymers
In the KRL test with a load of 5000N, the actual load fluctuation does not exceed 50N, which meets the standard requirements of NB/SH/T 0845-2010 Measurement of viscosity shear stability of transmission lubricants - Cone roller bearing testing machine method, and also meets the design requirements of the force application structure of the four ball machine.
Main technical parameters
| NO | Technical projects | function |
| 1 | Driving method | direct drive |
| 2 | Loading method | Fully automatic loading |
| 3 | Test load | 98~9800 [N] |
| 4 | Spindle radial runout | ≤ 0.01 [mm] |
| 5 | power | servo motor |
| 6 | Motor power | 2 [KW] |
| 7 | Spindle speed | 50-3000 [rpm] ; |
| 8 | Axis operation control mode | Manual control, time control, limited friction force, limited friction coefficient |
| 9 | Heating and cooling circulation temperature control system equipment | Thermostatic equipment, temperature controlled at 0.02 ºC |
| 10 | KRL oil cup heating range | -10~120 ºC |
Jinan HengXu Testing Machine Technology Co., Ltd., established in 2007, is a prominent hightech enterprise specializing in the research, development, and production of testing machines. With a focus on friction wear testing and mechanical testing for advanced materials, the company has become a leading player in China's testing industry. HengXu stands out due to its advanced testing technologies and strong customer trust, achieving over 100 million RMB in sales in last year.
Q: Are you a manufacturer?
A: Yes, we are a professional manufacturer with many years of manufacturing experience. Our factory is equipped with advanced production equipment and a skilled team, committed to providing customers with high-quality products and services. At the same time, we also welcome you to visit our factory at any time to better understand our production process and capabilities.
Q: How long does it take to produce and deliver?
A: The production and delivery cycle of the equipment is generally 10-20 days, depending on the equipment model and customization requirements you choose. If your order requires customized functions, the delivery time may need to be extended to about 4 weeks. We can provide a detailed delivery plan after confirming your complete requirements. If you have urgent order requirements, please let us know at any time, we will try our best to arrange a priority production plan for you!
Q: How is the equipment transported and protected?
A: To ensure the safety of equipment transportation, we use shock-proof and moisture-proof export-grade wooden boxes for packaging, and all precision parts will be properly handled with foam and protective film.
In terms of transportation methods, we can arrange sea or air transportation, and provide various documents (such as invoices, packing lists, certificates of origin, CE certificates). Before the equipment is packaged, we will complete all debugging procedures to ensure that it can be used after installation.
Q: How long is the equipment warranty period? How about after-sales support?
A: We provide a 1-year warranty service for all friction and wear testers, and provide free technical support and maintenance services (non-artificial damage) during the warranty period. In addition:
Remote technical guidance (such as installation and operation) can be provided;
Support on-site installation and commissioning and operation training when necessary (negotiable fees);
Provide lifetime paid equipment maintenance and supply wearing parts and accessories.
If you need to extend the warranty period or other after-sales service arrangements, please feel free to contact us!
Q: Can the test effect be verified before the equipment is delivered?
A: Of course! After the equipment is produced, you can choose the following methods:
Remote video acceptance: We will show you the equipment test operation and performance;
On-site acceptance: You are welcome to visit our factory for equipment function acceptance;
Provide sample testing: You can send samples to our company, we will shoot test videos for you, and provide detailed reports.
I hope the acceptance method can meet your expectations, and welcome further communication!
Q: We are using this equipment for the first time, can you provide training?
A: We provide detailed technical guidance and training support for all customers who purchase equipment, including:
The operating manual and operation guidance video that comes with the equipment;
Remote installation guidance: Demonstrate the operation steps through online videos;
On-site training (negotiable): If necessary, we can arrange for technicians to come to your factory for installation guidance and training (extra charge).
After the training, we guarantee that your team can operate the equipment proficiently and complete related testing work. Any follow-up questions also support lifelong technical consultation!
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