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FD
RONWIN
Expandable flexible roller conveyors are motorized roller conveyors with the ability to expand and compact freely within a defined range of length. Along with being adjustable in height, it's also able to expand, angle, or curve its conveying surface.
They're usually used in warehouses and stockyards for loading and unloading. It can handle packaging lines, transit conveyor lines, and physical distribution, in addition to receiving and delivering. The flat-bottomed carton is especially suitable for transportation. Therefore, it can handle items between two interfaces quickly and safely, reducing labor requirements.
Flexible expandable roller conveyors offer several advantages over fixed roller conveyors, making them ideal for dynamic and adaptable material handling environments. Here are the key benefits.
- Expandable Design: Can be extended or retracted to fit different workspace layouts or transport distances.
- Space Efficiency: Saves space when not in use by collapsing to a shorter length.
- Wheeled Bases: Often equipped with casters for easy relocation.
- Temporary Setups: Ideal for loading/unloading trucks, temporary production lines, or seasonal workflows.
- Multi-Directional Use: Can be curved or adjusted to route around obstacles.
- Handles Various Loads: Suitable for boxes, cartons, and light to medium industrial goods.
- Ergonomic Benefits: Reduces strain from lifting or carrying items over distances.
- No Permanent Installation: Lower infrastructure costs compared to fixed systems.
- Scalable: Can be reconfigured as workflow demands change.
- No Heavy Installation: Unlike fixed conveyors, they don’t require bolting or structural changes.
- On-the-Fly Adjustments: Easily adapted to different production or shipping layouts.
| Feature | Flexible Expandable Conveyor | Fixed Roller Conveyor |
|---|---|---|
| Length Adjustability | Yes (expandable/collapsible) | No (fixed length) |
| Mobility | Portable with wheels | Stationary |
| Installation | Plug-and-play, no setup needed | Requires permanent mounting |
| Space Efficiency | High (adjustable footprint) | Low (fixed space usage) |
| Best For | Dynamic, temporary workflows | High-volume, fixed layouts |
Ideal Use Cases for Flexible Expandable Conveyors*
✔ Warehouse Loading/Unloading – Adjusts to truck bed lengths.
✔ E-Commerce & Distribution Centers – Handles fluctuating order volumes.
✔ Production Line Flexibility – Easily repositioned for different assembly stages.
✔ Retail & Parcel Services – Quick setup for seasonal demand.
There are usually three types of standard rollers you can choose from.
Poly-v pulley driven roller
Toothed pulley driven roller
Grooved belt driven roller
Synchronous belt-driven rollers offer several distinct features and advantages compared to poly-V belt-driven rollers and O-belt (round belt)-driven rollers. Below is a detailed comparison.
- Uses toothed belts (timing belts) that mesh with matching pulleys, eliminating slip and ensuring precise speed synchronization.
- Unlike poly-V belts (which rely on friction) and O-belts (which can slip under load), synchronous belts maintain consistent speed ratios.
Minimal energy loss (efficiency ~98%) due to no slippage, whereas **poly-V belts** lose some efficiency (~95%) due to friction, and **O-belts** are less efficient (~90-93%) and prone to stretching.
Ideal for applications requiring exact positioning (e.g., conveyor indexing, robotics), whereas poly-V and O-belts are less precise due to potential creep/slip.
No tension adjustments needed frequently (unlike O-belts, which stretch and require retensioning).
Resists wear better than poly-V belts, which can develop grooves over time.
Can transmit higher torque in a smaller space compared to O-belts and even poly-V belts (which require larger pulleys for equivalent power).
Less vibration than poly-V belts (which can produce noise due to multiple ribs) and more stable than O-belts (which may whip at high speeds).
Advantages Over Poly-V Belt & O-Belt Driven Rollers
| Feature | Synchronous Belt | Poly-V Belt | O-Belt (Round Belt) |
|---|---|---|---|
| Slip Resistance | ✅ No slip (positive drive) | ❌ Prone to slip under overload | ❌ High slip tendency |
| Precision | ✅ High (exact positioning) | ❌ Moderate (some creep) | ❌ Low (stretches/slips) |
| Efficiency | ✅ ~98% | ~95% | ~90-93% |
| Maintenance | ✅ Low (no retensioning) | ⚠ Moderate (wear on ribs) | ❌ High (frequent retensioning) |
| Load Capacity | ✅ High torque capability | ⚠ Good, but limited by friction | ❌ Low (suited for light loads) |
| Durability | ✅ Long lifespan (no stretch) | ⚠ Ribs wear over time | ❌ Prone to wear/stretch |
| Noise/Vibration | ✅ Low noise & smooth | ⚠ Can be noisy at high speeds | ❌ Whipping noise possible |
Each unit is powered by a micro motor and is available in two speed configurations.
- Fixed Speed: Operates at a constant linear speed of 25 m/min. No electric control cabinet is included.
- Adjustable Speed: Offers variable speed control within a range of 10–35 m/min, complete with an electric control cabinet.
For ease of operation, a start switch and an emergency stop (E-stop) switch are installed at the end of the conveyor.
| Model No. | Units | Length | Width | Height | Load/unit | Rollers/unit | Qty of Legs | Weight |
|---|---|---|---|---|---|---|---|---|
| FD-50-450×1 | 1 | 450-1250 | 450 | 800-1000 | 100 | 9 | 2 | 68 |
| FD-50-450×2 | 2 | 900-2500 | 3 | 110 | ||||
| FD-50-450×3 | 3 | 1350-3750 | 4 | 150 | ||||
| FD-50-450×4 | 4 | 1800-5000 | 5 | 190 | ||||
| FD-50-450×5 | 5 | 2250-6250 | 6 | 230 | ||||
| FD-50-450×6 | 6 | 2700-7500 | 7 | 270 | ||||
| FD-50-500×1 | 1 | 450-1250 | 500 | 800-1000 | 100 | 9 | 2 | 71 |
| FD-50-500×2 | 2 | 900-2500 | 3 | 115 | ||||
| FD-50-500×3 | 3 | 1350-3750 | 4 | 157 | ||||
| FD-50-500×4 | 4 | 1800-5000 | 5 | 199 | ||||
| FD-50-500×5 | 5 | 2250-6250 | 6 | 241 | ||||
| FD-50-500×6 | 6 | 2700-7500 | 7 | 283 | ||||
| FD-50-600×1 | 1 | 450-1250 | 600 | 800-1000 | 100 | 9 | 2 | 76 |
| FD-50-600×2 | 2 | 900-2500 | 3 | 122 | ||||
| FD-50-600×3 | 3 | 1350-3750 | 4 | 166 | ||||
| FD-50-600×4 | 4 | 1800-5000 | 5 | 210 | ||||
| FD-50-600×5 | 5 | 2250-6250 | 6 | 255 | ||||
| FD-50-600×6 | 6 | 2700-7500 | 7 | 298 | ||||
FD-series
50-roller diameter
500-transportation surface width
×4-four units
The flexible expandable roller conveyor is designed to handle a wide range of box-shaped goods. When fully extended, the maximum load capacity per unit (measured between support legs) should not exceed 100 kg, assuming no impact loads are applied.
Heavy-duty swivel castors with brake are used for stable positioning during package handling.
For longer conveying distances, joint hooks can be used to connect multiple flexible expandable conveyors end-to-end.
Expandable flexible roller conveyors are motorized roller conveyors with the ability to expand and compact freely within a defined range of length. Along with being adjustable in height, it's also able to expand, angle, or curve its conveying surface.
They're usually used in warehouses and stockyards for loading and unloading. It can handle packaging lines, transit conveyor lines, and physical distribution, in addition to receiving and delivering. The flat-bottomed carton is especially suitable for transportation. Therefore, it can handle items between two interfaces quickly and safely, reducing labor requirements.
Flexible expandable roller conveyors offer several advantages over fixed roller conveyors, making them ideal for dynamic and adaptable material handling environments. Here are the key benefits.
- Expandable Design: Can be extended or retracted to fit different workspace layouts or transport distances.
- Space Efficiency: Saves space when not in use by collapsing to a shorter length.
- Wheeled Bases: Often equipped with casters for easy relocation.
- Temporary Setups: Ideal for loading/unloading trucks, temporary production lines, or seasonal workflows.
- Multi-Directional Use: Can be curved or adjusted to route around obstacles.
- Handles Various Loads: Suitable for boxes, cartons, and light to medium industrial goods.
- Ergonomic Benefits: Reduces strain from lifting or carrying items over distances.
- No Permanent Installation: Lower infrastructure costs compared to fixed systems.
- Scalable: Can be reconfigured as workflow demands change.
- No Heavy Installation: Unlike fixed conveyors, they don’t require bolting or structural changes.
- On-the-Fly Adjustments: Easily adapted to different production or shipping layouts.
| Feature | Flexible Expandable Conveyor | Fixed Roller Conveyor |
|---|---|---|
| Length Adjustability | Yes (expandable/collapsible) | No (fixed length) |
| Mobility | Portable with wheels | Stationary |
| Installation | Plug-and-play, no setup needed | Requires permanent mounting |
| Space Efficiency | High (adjustable footprint) | Low (fixed space usage) |
| Best For | Dynamic, temporary workflows | High-volume, fixed layouts |
Ideal Use Cases for Flexible Expandable Conveyors*
✔ Warehouse Loading/Unloading – Adjusts to truck bed lengths.
✔ E-Commerce & Distribution Centers – Handles fluctuating order volumes.
✔ Production Line Flexibility – Easily repositioned for different assembly stages.
✔ Retail & Parcel Services – Quick setup for seasonal demand.
There are usually three types of standard rollers you can choose from.
Poly-v pulley driven roller
Toothed pulley driven roller
Grooved belt driven roller
Synchronous belt-driven rollers offer several distinct features and advantages compared to poly-V belt-driven rollers and O-belt (round belt)-driven rollers. Below is a detailed comparison.
- Uses toothed belts (timing belts) that mesh with matching pulleys, eliminating slip and ensuring precise speed synchronization.
- Unlike poly-V belts (which rely on friction) and O-belts (which can slip under load), synchronous belts maintain consistent speed ratios.
Minimal energy loss (efficiency ~98%) due to no slippage, whereas **poly-V belts** lose some efficiency (~95%) due to friction, and **O-belts** are less efficient (~90-93%) and prone to stretching.
Ideal for applications requiring exact positioning (e.g., conveyor indexing, robotics), whereas poly-V and O-belts are less precise due to potential creep/slip.
No tension adjustments needed frequently (unlike O-belts, which stretch and require retensioning).
Resists wear better than poly-V belts, which can develop grooves over time.
Can transmit higher torque in a smaller space compared to O-belts and even poly-V belts (which require larger pulleys for equivalent power).
Less vibration than poly-V belts (which can produce noise due to multiple ribs) and more stable than O-belts (which may whip at high speeds).
Advantages Over Poly-V Belt & O-Belt Driven Rollers
| Feature | Synchronous Belt | Poly-V Belt | O-Belt (Round Belt) |
|---|---|---|---|
| Slip Resistance | ✅ No slip (positive drive) | ❌ Prone to slip under overload | ❌ High slip tendency |
| Precision | ✅ High (exact positioning) | ❌ Moderate (some creep) | ❌ Low (stretches/slips) |
| Efficiency | ✅ ~98% | ~95% | ~90-93% |
| Maintenance | ✅ Low (no retensioning) | ⚠ Moderate (wear on ribs) | ❌ High (frequent retensioning) |
| Load Capacity | ✅ High torque capability | ⚠ Good, but limited by friction | ❌ Low (suited for light loads) |
| Durability | ✅ Long lifespan (no stretch) | ⚠ Ribs wear over time | ❌ Prone to wear/stretch |
| Noise/Vibration | ✅ Low noise & smooth | ⚠ Can be noisy at high speeds | ❌ Whipping noise possible |
Each unit is powered by a micro motor and is available in two speed configurations.
- Fixed Speed: Operates at a constant linear speed of 25 m/min. No electric control cabinet is included.
- Adjustable Speed: Offers variable speed control within a range of 10–35 m/min, complete with an electric control cabinet.
For ease of operation, a start switch and an emergency stop (E-stop) switch are installed at the end of the conveyor.
| Model No. | Units | Length | Width | Height | Load/unit | Rollers/unit | Qty of Legs | Weight |
|---|---|---|---|---|---|---|---|---|
| FD-50-450×1 | 1 | 450-1250 | 450 | 800-1000 | 100 | 9 | 2 | 68 |
| FD-50-450×2 | 2 | 900-2500 | 3 | 110 | ||||
| FD-50-450×3 | 3 | 1350-3750 | 4 | 150 | ||||
| FD-50-450×4 | 4 | 1800-5000 | 5 | 190 | ||||
| FD-50-450×5 | 5 | 2250-6250 | 6 | 230 | ||||
| FD-50-450×6 | 6 | 2700-7500 | 7 | 270 | ||||
| FD-50-500×1 | 1 | 450-1250 | 500 | 800-1000 | 100 | 9 | 2 | 71 |
| FD-50-500×2 | 2 | 900-2500 | 3 | 115 | ||||
| FD-50-500×3 | 3 | 1350-3750 | 4 | 157 | ||||
| FD-50-500×4 | 4 | 1800-5000 | 5 | 199 | ||||
| FD-50-500×5 | 5 | 2250-6250 | 6 | 241 | ||||
| FD-50-500×6 | 6 | 2700-7500 | 7 | 283 | ||||
| FD-50-600×1 | 1 | 450-1250 | 600 | 800-1000 | 100 | 9 | 2 | 76 |
| FD-50-600×2 | 2 | 900-2500 | 3 | 122 | ||||
| FD-50-600×3 | 3 | 1350-3750 | 4 | 166 | ||||
| FD-50-600×4 | 4 | 1800-5000 | 5 | 210 | ||||
| FD-50-600×5 | 5 | 2250-6250 | 6 | 255 | ||||
| FD-50-600×6 | 6 | 2700-7500 | 7 | 298 | ||||
FD-series
50-roller diameter
500-transportation surface width
×4-four units
The flexible expandable roller conveyor is designed to handle a wide range of box-shaped goods. When fully extended, the maximum load capacity per unit (measured between support legs) should not exceed 100 kg, assuming no impact loads are applied.
Heavy-duty swivel castors with brake are used for stable positioning during package handling.
For longer conveying distances, joint hooks can be used to connect multiple flexible expandable conveyors end-to-end.
