214683 90 Revision A
Table 3.14 Optional Reel Drive Sprockets
Machine Hydraulics
Combine
Application
Optional Drive
Sprocket
13.79–14.48 MPa
(2000–2100 psi)
Gleaner Transverse Rotary Combining down rice
10 tooth
17.24 MPa
(2500 psi)
CLAAS 500, 700 Series,
Challenger Axial Rotary
Combining down rice
12 tooth
20.68 MPa
(3000 psi)
NH CR, CX, Case IH 7010,
8010, 7120, 8120, 88 Series
Combining down rice 14 tooth
Low flow
(under 42 L/min [11 gpm])
—
Combining light crops
above 16 km/h
(10 mph)
21 tooth
For installation details, refer to 5.16.3 Reel Drive Sprocket, page 530.
3.7.7 Ground Speed
Operating at the proper ground speed will result in cleanly cut crops and evenly distributed material into the
combine.
Reduce ground speed in difficult cutting conditions to reduce loads on cutting components and drives.
Use lower ground speeds in very light crops (e.g., short soybeans) to allow the reel to pull in short plants. Start at
4.8–5.8 km/h (3.0–3.5 mph) and adjust as required.
Higher ground speeds may require heavier float settings to prevent excessive bouncing that causes uneven cutting
and possible damage to the cutting components. If ground speed is increased, draper and reel speeds should
generally be increased to handle the extra material.
Figure 3.92, page 91 illustrates the relationship between ground speed and area cut for the various sized headers.
OPERATION
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