# Hydraulic motor 410.56, test bench — NII Gidroprivod JSC, Kharkiv

**IE A092**  
NII Gidroprivod JSC, Kharkiv · Ukraine · 2001

Pressure differential dropped, working fluid leakage decreased, scoring marks on the valve disappeared. Ukraine · 2001. A hydraulic drive research institute…

## Measured

- pressure drop across the hydraulic motor, 12 → 3.5 kgf/cm² — **3.4×**
- external leakage of the working fluid, 500 → 370 cm³/min — **26 %**

## Conclusion

Pressure differential dropped, working fluid leakage decreased, scoring marks on the valve disappeared

Page: https://industry.xado.com/case/akt_zao_nii_gidroprivod_g
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Original scan: https://industry.xado.com/scans/akt_zao_nii_gidroprivod_g.pdf