Construction Machinery: Medium-Sized Excavator Caterpillar

Model	Maximum vertical wall digging depth	Maximum vertical wall digging depth
E70B	3965 mm - 13 ft.
308D CR SB	3580 mm - 11.7 ft.
308D CR	4160 mm - 13.6 ft.
308C CR	4120 mm - 13.5 ft.
307D	4170 mm - 13.7 ft.
307C SB	3580 mm - 11.7 ft.
307C	3630 mm - 11.9 ft.	3200 mm - 10.5 ft.
307B SB	3580 mm - 11.7 ft.
307B	4160 mm - 13.6 ft.
305C CR	2940 mm - 9.6 ft.
304C CR	3690 mm - 9.1 ft.