A: High case drain pressure points to internal wear in the piston-to-cylinder block clearances. This allows excessive oil bypass, which can distort the shaft seal and lead to external oil leaks.
A: Every unit runs through a full hydraulic simulation test bench. We monitor torque output, speed transitions, and case drain leakage under maximum load to ensure OEM performance.
A: Yes, the integrated displacement valve connects directly to your machine's factory pilot system. This ensures smooth, responsive automatic or manual speed shifting.
A: Our heavy-duty floating seals use tempered alloy rings paired with resilient fluororubber O-rings. This assembly maintains its seal from -40°C to 120°C, blocking out fine rock dust.






















