Construction Machinery: Medium-Sized Excavator Hyundai

Model	Shoe dimensions	Track width	Specific ground pressure	Maximum travel speed	Support rollers number on either side	Rolling bearings number on either side
R80-7	450 mm - 17.7 inch	1750 mm - 5.7 ft.	32.3 kPa - 4.7 lb / sq. inch	4.8 km/h - 3 mile / h	1	5
R75-7	450 mm - 17.7 inch	1700 mm - 5.6 ft.	34 kPa - 4.9 lb / sq. inch	4.8 km/h - 3 mile / h
R55-7	400 mm - 15.7 inch	1500 mm - 4.9 ft.	32.3 kPa - 4.7 lb / sq. inch	4.1 km/h - 2.5 mile / h	1	5