Operating Speeds (S780 and S790)

Speeds shown are average and can vary from machine to machine.

Operating speed specifications and design subject to change without notice.

Engine Speeds	(13.5 L Tier 2/Stage II and Tier 3/Stage IIIA) Engine	(13.5 L Final Tier 4/Stage IV) Engine
Slow Idle (Separator Off)	1200 rpm	1200 rpm
Mid Speed (Separator Off)	1690 rpm	1690 rpm
Fast Idle (Separator Off)	2240 rpm	2240 rpm
Full Load Rated Speed	2100 rpm	2100 rpm

Separator Drive Shaft Speed

1466 rpm

Main Countershaft Speed

1466 rpm

Separator Speeds
High Range	400—1000 rpm
Low Range	210—530 rpm

Tailings System Speed

880 rpm

Feeder House Lower Shaft Speeds
Fixed Speed	490 rpm
Multi-Speed	First Gear: 480 rpm Second Gear: 535 rpm Third Gear: 590 rpm Fourth Gear: 665 rpm Fifth Gear: 735 rpm

Feed Accelerator Speeds
Feed Accelerator (Standard Speed)	430/780 rpm
Feed Accelerator (Optional Slow Speed)	310/770 rpm
Feed Accelerator (High-Speed High Capacity)	520/970 rpm

Discharge Beater Speed

995 rpm

Jackshaft Speeds
Front Right-Hand Jackshaft	520 rpm
Rear Right-Hand Jackshaft	520 rpm

Cleaning Fan Speeds
Standard Speed	620—1350 rpm
Special Slow Speed	250—500 rpm

Elevator Speeds	S780	S790
Clean Grain Elevator	415 rpm	460 rpm
Clean Grain Loading Auger	450 rpm	500 rpm
Tailings Elevator, Lower Auger	490 rpm
Tailings Elevator, Upper Auger	580 rpm
Shoe Drive	300 rpm
Conveyor Augers	425 rpm

Unloading System Speeds (Separator Engaged)
Unloading System Countershaft	1005 rpm
Unloading Auger Gearbox, Input Shaft	460 rpm 134 L/s (3.8 bu/s) Unload Rate
Unloading Vertical Auger	460 rpm 134 L/s (3.8 bu/s) Unload Rate
Unloading Outer Auger	460 rpm 134 L/s (3.8 bu/s) Unload Rate
Grain Tank Horizontal Augers (Front and Rear)	450 rpm 134 L/s (3.8 bu/s) Unload Rate

Chopper Speeds		Deluxe Residue	Premium Residue
Chopper/Discharge Beater Jackshaft		1880 rpm	2045 rpm
Chopper (Two Speeds)		1505/2350 rpm	1400/2995 rpm
Overshot Beater		Not Applicable	995 rpm