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当前位置: 誉荣电子 (Famouset) > 疲劳试验机 > 滚动轴承疲劳试验机

滚动轴承疲劳试验机

产地: 香港
型号: CM - 9053
样本: 下载
报价: ¥50万 - 100万
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核心参数

仪器种类: 其它疲劳试验机

产地类别: 进口

最大试验力: 详见参数

频率范围: 详见参数

主机重量: 详见参数

产品介绍


ROLLING ELEMENT BEARING FATIUGE LIFE TESTER CM - 9053


PURPOSE

The life of an individual rolling bearing is defined as the number of revolutions bearing endures before the first sign of fatigue (flaking, spalling) occurs on one of its rings or rolling elements. Purpose of this rig is to determine life of a loaded bearing. Dynamic load rating of a bearing is based on the fatigue life L10. This is the life which 90% of the bearings in a sufficiently large group can be expected to attain or exceed. When large number of identical bearings have been tested, L10 and hence, dynamic load rating can be estimated.

Any bearing which is amicable with the mounting and loading arrangement of the rig can be tested. This includes deep groove, angular contact, taper roller and cylindrical roller bearings.


DESCRIPTION

Schematic diagram of the test rig is shown in figure. Four identical bearings are mounted on a shaft. Axial and radial loads are applied when bearings are running. Failure of a bearing is sensed by abnormal increase of either vibration or temperature. At this point, the rig stops. Number of revolutions to fail are recorded.


The test rig consists of following sub-systems:

1. MECHANICAL ASSEMBLY

Each bearing size will require a matching shaft, set of spacers and adaptor rings (not shown in figure), so that they can be mounted in the housing for conducting tests. The housing is split for convenient assembly. Temperature sensors are mounted on the adaptor rings so that they touch the outer race. Vibration sensor is mounted on the housing. The ratio of the maximum to minimum bearing diameter, which can be accommodated in a test station, is 2. This is due to the load-speed requirement and dimensional constraints. Hence, the test requirements are covered in multiple test stations. Num-ber of test stations required depends on the span of test parameters. Each test station is a stand alone, independent unit.


2. LUBRICATION SYSTEM

Test bearings can be lubricated in any of the following ways:

1. Pre-packed with grease for life

2. Partial submersion in oil sump

3. Oil jet with recirculation system consisting of lubricant tank, pump, filters and delivery nozzles


3. LOADING SYSTEM

Test loads are axial and radial. Axial load is applied to the outer ring of outermost bearing on non-driven end of the shaft. This load is transmitted to the inner ring through the rolling elements. It is then transferred to the next bearing by a spac-er, and in this manner all the bearings are loaded in series. Once axial load has been applied, radial loading starts. This procedure minimizes non-uniformity in axial loading which may arise because of frictional force due to radial load.


4. DRIVE

One end of shaft is coupled to an induction motor. Test speed is set by a variable frequency inverter. Motor and coupling are balanced to minimize ambient vibration level of the system.


5. INSTRUMENTATION

The following sensors monitor various parameters:

? Load sensor for the measurement of axial load

? Load sensor for the measurement of radial load

? RPM sensor for test speed

? Four temperature sensors for bearing temperature at the outer ring

? Vibration sensor mounted on the housing

? Elapsed time meter

? Lube oil filter clog switch


6. MACHINE CONTROL SOFTWARE

Test rig is controlled through a PC. Machine control software facilitates preprogramming of test schedule. Test speed and radial load schedule are entered before the start of test. Speed and load can be either held constant or vary in steps or ramped when any of the bearing temperature exceeds user defined limit. Similarly, when RMS level of vibration ex-ceeds, set limit and stays continuously higher for more than one minute, a bearing is deemed to have failed, and test ter-minates. Whenever test stops, a message indicating its cause is displayed.


7. DATA ACQUISITION

Data acquisition is based on Labview 7.1. It records the following parameters:

? Axial and radial test loads

? Four channels of bearing temperature

? RMS Vibration level

Acquired data is displayed graphically online. It also monitors status of safety interlocks related to lubricating oil and loading system. When any parameters go beyond preset limit, commensurate action will be taken to ensure safety of the rig, sample and operator.

Post processing module allows viewing of the acquired data in several ways. Test results of a test can be viewed as graph. Results of several tests can be viewed together for comparison. Span of viewing can be selected and zoomed. Test results can be printed. They can also be exported to other software. The software is customized to include user’s logo, identification, address and similar information.


8. SAFETY INTERLOCKS

? Over voltage

? Under voltage

? Single phasing

? Motor over current

? Test load beyond preset limit.

? Lube oil filter clog.

? Bearing temperature exceeding preset limit.

? Vibration level exceeding preset limit.

? Safety guards

? ELCB


SPECIFICATIONS

It may not be possible to meet target specifications in one test station. Following table depicts a set of three test stations to cover 10 to 100 mm shaft diameter range. Test stations to meet your requirements may differ in number and specifica-tions.


工商信息

企业名称

誉荣电子科技有限公司

企业信息已认证

企业类型

个人独资

信用代码

5293969700007227

成立日期

2009-09-08

注册资本

150

经营范围

扭矩测试仪,扭转试验机,轮廓仪,形貌仪,泥浆试验机,激光雷达,激光测距仪 非接触式,腐蚀,摩擦磨损,瓶盖,材料性能,润滑,轴承,多功能摩擦磨损,电机,气流射流冲蚀,扭矩,其他,传感器,表面形貌,接触式,冲蚀试验机,泥浆冲蚀,各类试验机

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誉荣电子科技有限公司为您提供誉荣电子科技滚动轴承疲劳试验机CM - 9053,誉荣电子科技CM - 9053产地为香港,属于进口疲劳试验机,除了滚动轴承疲劳试验机的参数、价格、型号、原理等信息外,还可为您提供更多疲劳试验机,誉荣电子 (Famouset)客服电话,售前、售后均可联系。

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