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Koehler K94800 Grease Test Rig RHF 1

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Update Terakhir
21 Sep 2021
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1 unit

Spesifikasi Koehler K94800 Grease Test Rig RHF 1

Test Method


The purpose of the test is to measure the ability of a grease to lubricate at various high speeds, temperatures and axial loads. The grease quality is measured by recording the number of running hours before the grease ceases to lubricate and, as a consequence, the bearings fail. The longer the number of running hours in the test unit, the more effectively the grease lubricates under those conditions. In this way the maximum operating speed, temperature and load for a particular grease can be determined.


Specifications


Spindle Speed:


K94800/K94890: 60,000 RPM

K94801/K94891: 75,000 RPM


Test temperature: Up to 230 °C


Axial test load: 50 to 1 100 N/bearing


Drive: high-speed spindle


Operating system: Windows 7


Evaluation system: Industrial panel PC


Test bearings

For pure high-speed grease testing (synthetic cage):7005

For high-temperature/speed testing (metal cage): 6204 shields delivered separately in the package


Grease filling grades

For pure high-speed grease testing: 10 to 15% of the free volume 0,71 to 1,06 cm3

For high-temperature/speed testing: 20 to 30% of the free volume, 1,4 g corresponds to 30% when the specific weight is in a range of 0,9 to 1,0 g/cm3


Test parameters

For pure high-speed grease testing:

Speed rating for grease acc. 50,000 RPM = 1,8 mill. n × Dm

Maximum spindle speed possible 60,000 RPM = 2,16 mill. n × Dm

Maximum spindle speed possible 75,000 RPM = 2,7 mill. n × Dm

Axial load 50 to 350 N load applied pneumatically

Ambient temperature

Speeds and loads freely selectable and changeable during test duration


For high-temperature/speed testing:

Test bearing with shields or without shields

Speed rating for grease acc. 32,000 RPM = 1,072 mill. n × Dm

Maximum spindle speed possible 60,000 RPM = 2,01 mill. n × Dm

Maximum spindle speed possible 75,000 RPM = 2,7 mill. n × Dm

Axial load 50 ... 1,100 N load applied pneumatically

Temperature up to 230 °C

Speeds, temperature and loads freely selectable and changeable during test duration


Alat Laboratorium Umum


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