John Deere 3975

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Manufacturer	John Deere
Model	3975
Cutterhead
Diameter	45.7 cm 18 in.
Width	57.7 cm 22.7 in.
Number of knives	48
Knife type	Small, straight, helical
Knife size	14.8x8.5 cm 5.8x3.4 in.
Speed	850 rpm
Powertrain
PTO speed	---
Horsepower rating	Category 5 up to 112 kW 150 hp Category 6 up to 175 kW 235 hp
Overload protection	---
Feedrolls and housing
Housing width	55.9 cm 22 in.
Feedroll rise	15.2 cm 6 in.
Feedroll opening	852 cm² 132 sq in.
Upper feedroll protection	Shearbolt Slip clutch optional
Lower feedroll protection	Slip clutch Direct drive optional
Length of cut	6-13 mm 0.25-0.5 in.
Kernel processor
Roll width	61 cm 24 in.
Roll diameter	20 cm 8 in.
Roll gap	1-8 mm 0.1-0.8 in.
Upper roll speed	1,940 rpm
Lower roll speed	2,830 rpm
Blower fan
Number of blades	4
Diameter	81.3 cm 32 in.
Speed	722 or 1,000 rpm
Auger
Diameter	27.9 cm 11 in.
Speed	392 or 540 rpm
Feedroll drive
Gearcase	Enclosed
Shift	Hydraulic, forward, reverse, neutral
Controls
Height
Tire size
Weight
Date collected