軸承吹塵吹砂試驗箱

軸承吹塵吹砂試驗箱

參照標準：MIL-STD-810G

 



 

 



 

the DUT is operated with a scoop. Heat exchangers and baffle plates must not be used

 

Figure 14: Schematic setup of the sand test bed (M:drive for external fan)

 

The test chamber must be designed in such a way that no sand is deposited in the testing space.

 

The volume of the test chamber upstream of the DUT must be at least 900 liters; a distance of at least 1000 mm must be adhered to between the air intake and the DUT.

 

Operating variable     Value unit specification

 

Piping cross section     Diameter 250 mm

 

Flow rate (without sand)   

 

Center of test chamber upstream of the DUT at least 60 km/h with the fan at a standstill (or 65 km/h at Nmax)

 

Sand grain size         0.4~0.8 mm as per DIN EN 12904

 

Sand mass            10 kg

 

Table 11: Operating variables/parameters for sand test bed