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FB
RONWIN
Gravity flexible expandable double-roller conveyor is designed specially for handling of carton package with flat bottom. Complete steel structure is used for this conveyor. When laying out according to complete expansion of single curve or composite curve, its structure remains integrated.
This conveyor is defined by a set of unique physical and operational traits.
Constructed from lightweight, interlocking sections (typically aluminum or steel).
Can be compressed to a fraction of its extended length for compact storage and transport. Many models include handles or wheels for easy mobility.
The "expandable" nature means a single 10-foot conveyor might extend to 15 feet, allowing one unit to service multiple dock doors or truck beds.
This is a key feature. Two parallel rows of rollers create a stable, wide track.
Benefits
Prevents smaller or sagging cartons from getting stuck in the center.
Provides better support and stability for a wide range of box sizes.
Allows for smoother movement of irregularly shaped items compared to a single roller line.
It has no motors, chains, or belts. Operation is silent and has zero energy cost.
Movement is entirely dependent on gravity, requiring a consistent downward slope (typically achieved by adjusting the height of the support legs).
The conveyor's spine is designed to flex, allowing operators to bend it into straight lines, "S" curves, or "U" shapes to navigate around corners, pillars, and other obstacles in real-time.
While robust, these conveyors are engineered for cartons, parcels, and totes—not for pallets or extremely heavy industrial parts. Load capacity is a critical specification to check.
With no electrical components and simple bearing-based rollers, maintenance is minimal, usually involving occasional cleaning and bearing lubrication.
This conveyor excels in dynamic environments where permanence and fixed paths are limitations. Its primary applications include.
This is its most common use. The conveyor can be extended from a warehouse dock directly into a truck trailer, bent to follow the contour of the trailer walls, maximizing access and efficiency.
Ubiquitous in the shipping industry (e.g., FedEx, UPS) for sorting and moving packages from sorting lines into delivery vehicles quickly.
Ideal for creating temporary sortation lines, moving received goods to staging areas, or consolidating outbound orders.
Perfect for loading and unloading household goods, office equipment, and general freight from trucks.
Excellent for temporary operations like pop-up distribution centers, holiday season peaks, or special projects where a permanent conveyor is not justified.
Used to bring components from storage to assembly stations and can be easily reconfigured or moved as production needs change.
| Model No. | Units | Length | Width | Height | Load/unit | Rollers/unit | Qty of Legs | Weight |
|---|---|---|---|---|---|---|---|---|
| FB-50-450×1 | 1 | 450-1250 | 450 | 800-1000 | 100 | 18 | 2 | 56 |
| FB-50-450×2 | 2 | 900-2500 | 3 | 91 | ||||
| FB-50-450×3 | 3 | 1350-3750 | 4 | 126 | ||||
| FB-50-450×4 | 4 | 1800-5000 | 5 | 160 | ||||
| FB-50-450×5 | 5 | 2250-6250 | 6 | 197 | ||||
| FB-50-450×6 | 6 | 2700-7500 | 7 | 232 | ||||
| FB-50-500×1 | 1 | 450-1250 | 500 | 800-1000 | 100 | 18 | 2 | 59 |
| FB-50-500×2 | 2 | 900-2500 | 3 | 95 | ||||
| FB-50-500×3 | 3 | 1350-3750 | 4 | 132 | ||||
| FB-50-500×4 | 4 | 1800-5000 | 5 | 169 | ||||
| FB-50-500×5 | 5 | 2250-6250 | 6 | 204 | ||||
| FB-50-500×6 | 6 | 2700-7500 | 7 | 243 | ||||
| FB-50-600×1 | 1 | 450-1250 | 600 | 800-1000 | 100 | 18 | 2 | 64 |
| FB-50-600×2 | 2 | 900-2500 | 3 | 103 | ||||
| FB-50-600×3 | 3 | 1350-3750 | 4 | 142 | ||||
| FB-50-600×4 | 4 | 1800-5000 | 5 | 182 | ||||
| FB-50-600×5 | 5 | 2250-6250 | 6 | 220 | ||||
| FB-50-600×6 | 6 | 2700-7500 | 7 | 262 | ||||
FB-series
50-roller diameter
500-transportation surface width
×5-five units
It is crucial to understand how this conveyor creates a curve compared to the Gravity Tapered Steel Roller discussed previously.
Flexible Expandable Conveyor: The curve is created by physically bending the entire conveyor frame. The rollers themselves are straight and remain parallel to each other. The curve is a result of the flexible spine, and the outer path is simply longer than the inner path. This works well for lightweight loads but can cause larger, rigid items to bind if the curve is too tight.
Gravity Tapered Roller Conveyor: The conveyor frame is rigid and fixed. The curve is achieved mechanically because each individual roller is tapered. The difference in diameter from one end to the other forces the load to turn. This provides a positive, controlled turn for very heavy loads like pallets.
In summary, the Flexible Expandable Gravity Double Roller Conveyor is the epitome of logistical agility. It is an unpowered, portable, and adaptable workhorse that solves the "last-mile" problem inside warehouses and loading docks. Its value is not in handling immense weight or serving as a permanent fixture, but in its ability to be instantly deployed, reconfigured, and stored, making material handling more efficient and ergonomic in ever-changing environments
Gravity flexible expandable double-roller conveyor is designed specially for handling of carton package with flat bottom. Complete steel structure is used for this conveyor. When laying out according to complete expansion of single curve or composite curve, its structure remains integrated.
This conveyor is defined by a set of unique physical and operational traits.
Constructed from lightweight, interlocking sections (typically aluminum or steel).
Can be compressed to a fraction of its extended length for compact storage and transport. Many models include handles or wheels for easy mobility.
The "expandable" nature means a single 10-foot conveyor might extend to 15 feet, allowing one unit to service multiple dock doors or truck beds.
This is a key feature. Two parallel rows of rollers create a stable, wide track.
Benefits
Prevents smaller or sagging cartons from getting stuck in the center.
Provides better support and stability for a wide range of box sizes.
Allows for smoother movement of irregularly shaped items compared to a single roller line.
It has no motors, chains, or belts. Operation is silent and has zero energy cost.
Movement is entirely dependent on gravity, requiring a consistent downward slope (typically achieved by adjusting the height of the support legs).
The conveyor's spine is designed to flex, allowing operators to bend it into straight lines, "S" curves, or "U" shapes to navigate around corners, pillars, and other obstacles in real-time.
While robust, these conveyors are engineered for cartons, parcels, and totes—not for pallets or extremely heavy industrial parts. Load capacity is a critical specification to check.
With no electrical components and simple bearing-based rollers, maintenance is minimal, usually involving occasional cleaning and bearing lubrication.
This conveyor excels in dynamic environments where permanence and fixed paths are limitations. Its primary applications include.
This is its most common use. The conveyor can be extended from a warehouse dock directly into a truck trailer, bent to follow the contour of the trailer walls, maximizing access and efficiency.
Ubiquitous in the shipping industry (e.g., FedEx, UPS) for sorting and moving packages from sorting lines into delivery vehicles quickly.
Ideal for creating temporary sortation lines, moving received goods to staging areas, or consolidating outbound orders.
Perfect for loading and unloading household goods, office equipment, and general freight from trucks.
Excellent for temporary operations like pop-up distribution centers, holiday season peaks, or special projects where a permanent conveyor is not justified.
Used to bring components from storage to assembly stations and can be easily reconfigured or moved as production needs change.
| Model No. | Units | Length | Width | Height | Load/unit | Rollers/unit | Qty of Legs | Weight |
|---|---|---|---|---|---|---|---|---|
| FB-50-450×1 | 1 | 450-1250 | 450 | 800-1000 | 100 | 18 | 2 | 56 |
| FB-50-450×2 | 2 | 900-2500 | 3 | 91 | ||||
| FB-50-450×3 | 3 | 1350-3750 | 4 | 126 | ||||
| FB-50-450×4 | 4 | 1800-5000 | 5 | 160 | ||||
| FB-50-450×5 | 5 | 2250-6250 | 6 | 197 | ||||
| FB-50-450×6 | 6 | 2700-7500 | 7 | 232 | ||||
| FB-50-500×1 | 1 | 450-1250 | 500 | 800-1000 | 100 | 18 | 2 | 59 |
| FB-50-500×2 | 2 | 900-2500 | 3 | 95 | ||||
| FB-50-500×3 | 3 | 1350-3750 | 4 | 132 | ||||
| FB-50-500×4 | 4 | 1800-5000 | 5 | 169 | ||||
| FB-50-500×5 | 5 | 2250-6250 | 6 | 204 | ||||
| FB-50-500×6 | 6 | 2700-7500 | 7 | 243 | ||||
| FB-50-600×1 | 1 | 450-1250 | 600 | 800-1000 | 100 | 18 | 2 | 64 |
| FB-50-600×2 | 2 | 900-2500 | 3 | 103 | ||||
| FB-50-600×3 | 3 | 1350-3750 | 4 | 142 | ||||
| FB-50-600×4 | 4 | 1800-5000 | 5 | 182 | ||||
| FB-50-600×5 | 5 | 2250-6250 | 6 | 220 | ||||
| FB-50-600×6 | 6 | 2700-7500 | 7 | 262 | ||||
FB-series
50-roller diameter
500-transportation surface width
×5-five units
It is crucial to understand how this conveyor creates a curve compared to the Gravity Tapered Steel Roller discussed previously.
Flexible Expandable Conveyor: The curve is created by physically bending the entire conveyor frame. The rollers themselves are straight and remain parallel to each other. The curve is a result of the flexible spine, and the outer path is simply longer than the inner path. This works well for lightweight loads but can cause larger, rigid items to bind if the curve is too tight.
Gravity Tapered Roller Conveyor: The conveyor frame is rigid and fixed. The curve is achieved mechanically because each individual roller is tapered. The difference in diameter from one end to the other forces the load to turn. This provides a positive, controlled turn for very heavy loads like pallets.
In summary, the Flexible Expandable Gravity Double Roller Conveyor is the epitome of logistical agility. It is an unpowered, portable, and adaptable workhorse that solves the "last-mile" problem inside warehouses and loading docks. Its value is not in handling immense weight or serving as a permanent fixture, but in its ability to be instantly deployed, reconfigured, and stored, making material handling more efficient and ergonomic in ever-changing environments
