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2017 SUNFLOWER 1550 at www.binkleyhurst.com2017 SUNFLOWER 1550 at www.binkleyhurst.com
2017 SUNFLOWER 1550 at www.binkleyhurst.com2017 SUNFLOWER 1550 at www.binkleyhurst.com
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Description

The 1550 Series Tandem Disc Harrow is available in working widths of 47’ and 50’.

The Sunflower exclusive “Duplex Wing Hinge” provides the 1550 with unsurpassed flexibility in the field. Dual pivots designed into the hinge means a lower wing flex point when working. This lower pivot position gives the 1550 more downward flex than the competitors’ disc and enables the 1550 to hug the ground without gouging or ridging the field. The upper wing pivot position of the duplex hinge allows the 1550 to fold compactly for transport.

Safe transport of the 1550 is further augmented by another Sunflower exclusive: “Walking Triples”. This revolutionary design puts three tires in a walk-over tandem set rather than two. The Walking Triple design increases the load capacity fifty percent over a two tire carriage and provides excellent stability on the road. Center section Walking Triples are standard equipment on all models of the SF1550 series.

Aggressive gang angles (18°), exceptional weight of 665 pounds per foot, and full concavity (24”) disc blades equip the SF1550 to work through the toughest crop residue and hard soils to manage crop residue or build a seedbed at thirty acres per hour.

Staggered Overlapping Disc Gangs
With the exception of the 1300, 1700 and 1800 series, every Sunflower disc features staggered overlapping disc gangs - one of the keys to level discing. The overlapped placement of the front gangs cuts all of the ground cleanly while the staggered rear gangs throw the soil back in a criss-cross pattern. This arrangement eliminates the need for a chisel shank or bulk buster typically required in the center and behind the front gangs of conventional tandems. Even more importantly - the Sunflower combination eliminates ridging in the center - another problem common with conventional tandem discs. Sunflower also makes sure the tires are placed close to the hinge line on the center section and the outside of each wing. This assures the disc will perform properly, without gouging, in rough or terraced ground. Some manufactures save money by simply extending the gang bars on the wings to make the next large size. This leaves the wing wheels too far inside and they cannot control the wings in rough or terraced ground.
- Featured on all except: 1300, 1700 & 1800 series disc

Trunnion Mounted Bearings
Sunflower's trunnion bearings provide positive alignment, eliminate wear between the bearings and the housing and ensure positive lubrication. As the C-Flex™ bearing standards move, the gang bearings have to constantly realign. On conventional bearing systems the bearing moves within the housing. This eventually leads to wear between the bearing and the housing... then bearing failure, because grease cannot get into the bearing. With the trunnion bearing there is never any wear between the bearing and the housing and there is always positive lubrication. The trunnion bearing features triple lip seals that cannot be damaged by daily greasing and metal washers that protect the seals from being damaged by stocks or material wrapping around the gang shaft.
- Featured on all except: 1700 & 1800 series disc

C-Flex™ Bearing Standards
Standard equipment on every Sunflower disc, the C-Flex™ bearing standards absorb disc gang shock created by stumps, rocks and normal discing. This extends the bearing, spool and disc blade life. A bonus feature is the C-Flex's™ ability to clear residue better than conventional rigid standards. The C-Flex™ bearing standards also allow for easy maintenance of the disc gang assembly. Just remove one bolt and loosen another bolt at each C-Flex™ location and the entire gang can be dropped. All C-Flex™ standards remain in place to assure the gang will be in the correct position when replaced. Unlike competitive machines the scraper bars are mounted to the back of the C-Flex™ Standards. This allows the scrapers to react with the gang and not come into contact with the spools or blades.
- Featured on all except: 1700 & 1800 series disc

Spring Cushion Gang Assembly
The entire gang assembly pivots upwards when an obstruction is encountered. The heavy coil springs compress allowing the gang assembly to pass over the obstruction then expands to return the gangs to their working position.
- Optional on 1700 & 1800 series

Rigid Gang Assembly
Standard equipment on 1700 & 1800 series

Self-leveling Hitch
Level the disc frame from front to rear with Sunflower's unique self-leveling hitch. This positive adjustment maintains a pre-selected setting regardless of the tillage depth. It features heavy-duty compression springs on each side of the pivot to cushion both front and rear gangs, important when crossing ditches or rough terrain. Some disc models offer optional hydraulic adjustment.

Working width ft. in. (m)

1550-47
46’ 9”
1550-50
49’ 6”

Transport width ft. in. (m)

1550-47
18’ 2” (5.5)
1550-50
18’ 2” (5.5)

Transport height ft. in. (m)

1550-47
13’ 11” (4)
1550-50
13’ 11” (4)

Est. weight lbs. (kg.)

1550-47
31,302 (14,198)
1550-50
33,300 (15,105)

Weight per ft. of cut lbs. (kg.)

1550-47
666 (302)
1550-50
666 (302)

HP requirements

HP/FT
10 to 12 hp/ft

General Comments

Note: Specifications may vary based on tires, hydraulic system, attachments or other possible variances.