3990 Series
"Flex-Wing" Tandem Disc Harrow
Specifications, Standard Equipment & Options
Model 3994 WR shown (34 ft. width)
3-Section,
31 - 34 ft.
3990 Series Specifications
Model
Total No.
Disc
Blades
Disc
Blade
Spacing
Cutting
Width
Road
Width
Road
Height
Number
Bearing
Arms
Approx.
Wt.
STANDARD MODELS
3991N
102
7 3/4"
31'8"
16'4"
14'2"
26
11746#
3994N
106
7 3/4"
34'1"
16'4"
15'6"
26
12187#
3991W
90
9 1/8"
31'1"
16'4"
14'2"
24
11247#
3994W
94
9 1/8
34'0"
16'4"
15'6"
26
11745#
ROCK-FLEX
3991NR
102
7 3/4"
31'8"
16'4"
14'2"
26
12667#
3994NR
106
7 3/4"
34'1"
16'4"
15'6"
26
13196#
3991WR
90
9 1/8"
31'1"
16'4"
14'2"
24
12098#
3994WR
94
9 1/8"
34'0"
16'4"
15'6"
26
12647#
Standard Equipment and Options
Continued on Next Page
STANDARD EQUIPMENT
Ductile Hitch Clevis
Tongue type for 2" pin
Disc Blades
Rock-Flex Models: 22" 6 gauge
Standard Models: 22" 7 gauge
Blade Spacing
7 3/4" or 9 1/8"
Disc Gang Angle
17° front and rear
Tie-Rods
1 1/2" diameter alloy
Scrapers
3 1/2" rigid, adjustable
Hydraulics
All cylinders and hoses
Depth Control
(2) 4" x 10", (2) 3 3/4" x 10"
Wing Lift Cylinders
(2) 4" x 40"
Single Location Remote Depth Control
Self-Leveling Tongue
Tires
(4) 11L x 15" 10-ply center
(4) 9.5 x 15" 8-ply wings
Safety Chain
Transport Light Kit
OPTIONAL EQUIPMENT
Packer Hitch
Rear Jack Stand
Scrapers
3 1/2" rigid front, spring loaded rear, or
5" rigid front and rear
Tine Harrow
3-Row 11" tines or
3-Row 16" tines
Wing Gauge Wheels (2)
Krause Corporation, 305 S. Monroe, Hutchinson, KS 67501
Copyright 1997-2008 Kuhn Krause Inc., All rights reserved
