With dual track spiral conveyors, tracks operate independently within a single spiral tower. Tracks can raise or lower the load, and can optionally be reversible.
A single drive motor is required for each track, resulting in substantial savings in energy, controls and systems integration. Since you can conveyor twice the load in the same footprint, the dual track systems require even less floor space than a single track spiral.
The dual spirals are available in 4 basic standard configurations (A, B, C and D) and will accommodate most requirements relating to the location of the in and out feed tangents. All configurations can operate up or down in a clockwise or counterclockwise rotation.
Models with dual 8", 12", 16" or 20" wide slats are available. Some site assembly is required for models with 16" and 20" wide slats.
Conveyor Type |
Outside Diameter |
Centerline Diameter 1 |
Centerline Diameter 2 |
Slat Width |
Centerline Distance |
1200-200/1800-200 | 6'11" | 5'11" | 3'11" | 8" | 1'0" |
1200-300/2000-300 | 7'11" | 6'6" | 3'11" | 12" | 1'4" |
1300-400/2300-400 | 9'3" | 7'7" | 4'3" | 16" | 1'8" |
1600-500/2800-500 | 11'2" | 9'2" | 5'3" | 20" | 2'0" |
An innovative modular design allows easy customization and field modification to accommodate emerging needs. All spirals are made to order and are available in 4 basic configurations ( A, B, C and D), accommodating most requirements relating to the location of the in and out feed tangents. All configurations can operate up or down in a clockwise or counterclockwise rotation and custom configurations are available. The two tracks do not have to feed in and out of the spiral at the same elevations.
Most spirals are shipped without controls because they are normally integrated into an overall conveyor control system.
Spirals always include an inverter duty gear motor and two proximity sensors, one for the automatic chain tensioner and the other for the overload protection device. A Variable Frequency Drive (VFD) is required for the proper operation of the spiral. Ryson offers several controls options including :
Ryson Spirals are shop tested prior to shipment, but optimal performance depends on proper integration with the overall conveyor system.