Knife Speed Data - MacDon FlexDraper FD1 Series Operator's Manual

3.7.9 Knife Speed Data

The header knife drive is powered by the FM100 hydraulic pump, which is driven by the combine feeder house.
There is no separate adjustment to control the knife speed.
IMPORTANT:
For variable speed feeder houses, the rpm values shown at
right represent the MINIMUM feeder house speeds.
IMPORTANT:
Ensure the knife speed is within the range of rpm values in
Table 3.16, page 94. Refer to
95.
IMPORTANT:
Under normal cutting conditions, knife speed taken at the
knife drive pulley should be set between 600–640 rpm
(1200–1280 spm). If set to low side of chart, you could
experience knife stalling.
44. The rear shaft speed on CLAAS combines is 420 rpm (speed shown on cab display monitor also will be 420).
The output shaft speed is actually 750 rpm.
214683
OPERATION
Checking Knife Speed, page
Table 3.15 Feeder House Speed
Combine
John Deere
Case IH
Gleaner
Massey Ferguson
Challenger
New Holland
CLAAS 44
Table 3.16 FD1 Series Header Knife Speed
Header Size
m (ft.)
9.1 m (30 ft.)
12.1 m (35 ft.)
12.2 m (40 ft.)
13.7 m (45 ft.)
94
Feeder House Speed
(rpm)
490
580
625
625
625
580
420
Recommended Knife Drive
Speed Range (rpm)
Single-Knife Double-Knife
Drive Drive
—
600–700
—
550–650
525–600 550–700
—
550–700
Revision A