SK80SR:
Operating weight: 8,300 kg
Engine power: 49.7 kW
Max digging reach: 7,930 mm
Max digging depth: 4,815 mm
Max digging height: 7,310 mm
Bucket capacity: 0.26 - 0.35 m³
SK60:
Operating weight: 5,910 kg
Engine power: 40.5 kW
Max digging reach: 6,450 mm
Max digging depth: 3,915 mm
Max digging height: 6,320 mm
Bucket capacity: 0.16 - 0.24 m³
As for the K3SP36B-101R-2001 hydraulic pump, here are some specifications:
Displacement: 35.7 cc/rev
Max pressure: 31.5 MPa
Max speed: 3,000 rpm
Input shaft: Keyed shaft
Mounting flange: 4-bolt flange
Port type: SAE O-ring