Operating the Rotary Harvesting Unit
Continued on next page KM00321,0000317 -19-16JUN10-1/6
Length of Cut and Drum Speeds with CLAAS
Forage Harvester 830-900 (Type 493)
2-Speed Gear Box
The two-speed gear box of the rotary harvesting unit is
available in two versions:
•
Speed increase for normal to long length of cut
(standard)
•
Speed reduction for short length of cut (option)
See tables below to determine length-of-cut adjustment.
Cutterhead with 28 knives (type 493)
Two-speed gear box (III) for normal to long length of
cut (standard)
KM1001220 —UN—16JUN10
I—Length of cut, number of knives II—Length-of-cut
transmission, forage
harvester
III—Rotary harvesting
unit drive
IV—Gathering drum
speed
2x14 knives 2x7 knives
Gear Gear
rpm
5.1 mm (0.20 in.) 10.2 mm (0.40 in.)
1 51
6.0 mm (0.24 in.) 12.0 mm (0.47 in.)
1 51
6.9 mm (0.27 in.) 13.8 mm (0.54 in.)
1 51
7.7 mm (0.30 in.) 15.4 mm (0.60 in.)
1 51
8.6 mm (0.34 in.) 17.2 mm (0.68 in.)
1
2 64
6.9 mm (0.27 in.) 13.8 mm (0.54 in.)
1 51
7.7 mm (0.30 in.) 15.4 mm (0.60 in.)
1 51
8.6 mm (0.34 in.) 17.2 mm (0.68 in.)
2 64
9.4 mm (0.37 in.) 18.8 mm (0.74 in.)
2 64
10.3 mm (0.41 in.) 20.6 mm (0.81 in.)
2 64
11.1 mm (0.44 in.) 22.2 mm (0.87 in.)
2 64
12.0 mm (0.47 in.) 24.0 mm (0.94 in.)
2
2 64
35-5
031519
PN=79
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