Rotating Bending Fatigue Testing Machine@[Japan]
YAMAMOTO METAL TECHNOS CO., LTD.
Japanese
Top Company Info News Products Site Map contact
TOP
GIGA QUAD Line up
YRB200
YRB300L
Corrosion environmental testing unit YRB200-010
High temperature environmental testing unit(Halogen Lamp)
2-step variable loading unit
Q&A
Libcy
Technical information



papers
Products

For dual-spindle rotating bending fatigue testing machine


2-step variable loading unit
GIGA QUAD series 2-step variable loading unit
Contact

A special loading unit has been developed to perform the rotating bending fatigue test under the condition of 2-step variable loading.
Stress applied to the specimen is provided by suspending the appropriate weight in the structure of the machine.
In this unit, 2-step loading is applied by lifting a part of weight with air cylinder periodically in testing.
There are a couple of weights to provide the appropriate load in both upper side and lower side in this unit.
2-step loading is applied by lifting only the lower side weight by an air cylinder.
In this picture, you can see the situation where the lower side weight is released by the air cylinder.
By setting any value of the weight and the lifting period, one can perform fatigue tests in a wide variety of the testing environments close to real machines in the practical use.

Specification

Road ratio can be set manually by hand, and the cycle ratio can be set by using a software given in advance.
In the case of the diameter of the critical section is 6mm,Upper side load is from 173MPa to 2491MPa and lower side load is from 111MPa to 2274MPa.
In the case of the diameter of the critical section is 8mm, like this.
(refer to the following figure)
Maxmum load Range of variable load
Diameter of the critical section Upper side load
(MPa) 
 Lower side load
(MPa)
80kg~4points 6mm 173`2491 111`2274
8mm 73`1050 47`959
When you change the load, the cylinder needs about 5 seconds to stroke, and then the unit lowers the rotating speed of the spindle to 100rpm until the cylinder stops to move.
TECHNICAL INFORMATION
>> PageTop



YAMAMOTO METAL TECHNOS CO., LTD.
Rotating Bending Fatigue Testing Machine@[Japan]

4-7, Setoguchi 2-chome, Hirano-ku, 547-0034 Osaka Japan
TEL: 81-6-6704-1800@E-mail: info@yama-kin.co.jp


Top | Company Info | News | Products | Site Map | Contact