Expandable scissor frame
Linked side frames let the route extend and curve, then contract for storage. Roller spacing changes with expansion, so check goods support at the longest working position.
Powered flexible roller conveyors for carton handling
Custom-made powered flexible roller conveyors for changing packing and dispatch routes. Choose working and retracted lengths, width, height and drive controls together.
Made to order for your goods and layout
Every conveyor is custom made for the client. Define the length, width, heights, conveying surface and controls around your operation, with the selected configuration and project scope set out in writing.
- Legal seller
- Krona Robotics UAB
- Company registration
- Lithuania
- Estimated delivery
- 60 days
- All products
- CE certified
- Company certification
- ISO 9001
- Warranty
- 2 years
Estimated delivery: 60 days. Your written quotation confirms the delivery schedule, freight arrangements and responsibilities for installation and support. Two-year warranty. The written quotation specifies coverage, the commencement date, exclusions, spare parts and service arrangements.
Request a written quote ↗Product gallery
Illustrations show the working concept. Equipment dimensions, finishes, guarding and options are confirmed in your quotation.
How the equipment works
Powered full-width rollers
The carrying surface uses full-width driven rollers rather than passive small wheels. Confirm the drive arrangement, usable width and carton base together.
Mobile height-adjustable supports
Castors and adjustable legs help position the line at changing work areas. Floor condition, parked stability, working height and cable routing belong in the configuration brief.
Application & fit
Configure the expandable route around the goods, operating positions and storage space. Extension and curvature change the roller spacing and the support beneath the load. The smallest base must remain stable throughout the intended working envelope, with mobile supports, cables and operator controls included in the layout.
Plan the application and handover points
Illustrative workflow for discussing your project. This is not a dimensioned installation drawing or a completed customer project.
- Dispatch position
- Powered flexible roller conveyors
- Changing receiving point
Check before selecting the configuration
Mark the longest route, tightest curve and storage position. Check carton support in all three positions, plus braked castors, cable reach and handover height.
For a permanent route with defined machine interfaces: Powered roller conveyors ↗
Configuration choices
Made to order for your operation
Each powered flexible conveyor is made to order around its working envelope. The frame geometry, roller pitch and drive must suit the same goods and operating positions.
Layout and operating choices
Working route and storage envelope
Choose the required extended and retracted lengths, usable width, curves and space for moving and parking the conveyor. Check carton support at the longest operating position.
Powered movement and connections
Define working heights, goods flow, drive speed and stop/start behaviour. Position supports and controls around the adjoining line, floor and operator access.
Reference dimensions for custom configurations
Every conveyor is made to order. These dimensions are configuration references, not a limit on the width, length or working height you can request. We select the final dimensions and options together for your goods and layout.
Powered expandable roller conveyor
- Reference widths (mm)
- 500
- 600
- 800
- 1,000
- Reference height ranges (mm)
- 450–550
- 600–850
- 650–950
- 700–1,100
- 950–1,550
- 1,300–2,250
- Length
- To suit your requirements
- Contracted vs. extended length
- 0.75:2Contracts to 37.5% of its fully extended length.
Carbon-steel rollers are the standard reference. Alternative materials and additional options are quoted separately.
Send your required length, usable width, inlet and outlet heights, and goods dimensions and weight. Include any requirements outside these reference sizes for configuration review.
Configuration information
These application details define the made-to-order conveyor. Include the dimensions and operating requirements you know; the remaining choices can be developed from your handling task.
- Contracted and expanded length (mm), permitted curve and storage space
- Goods base dimensions (mm) and weight (kg/item)
- Effective width, roller pitch and adjustable height range (mm)
- Drive/supply, operating speed and line connection controls
Powered expandable Poly-V: reference configuration
A starting configuration for quotation, with dimensions and equipment selected to suit your project. The figures below apply to this reference arrangement.
Retracted length is 37.5% of extended length. These bars compare the reference unit lengths; allow additional space for supports, controls and operator access when planning the complete installation.
Extended reference unit2,000 mm
Retracted reference unit750 mm
- Extended unit length
- 2,000 mm
- Contracted / extended length
- 750 / 2,000 mm · 37.5%
- Roller width in the reference
- 800 mm option; usable width confirmed in the layout
- Roller diameter / pitch
- 50 / 150 mm
- Rollers per reference unit
- 14
- Conveying speed
- 10–30 m/min
- Motor power
- 120 W per 2 m
- Inverter capacity options
- 0.75 / 1.5 / 2.2 kW
- Listed supply voltage
- 220–380 V
- Drive / direction
- Poly-V belt · forward and reverse
- Frame / roller surface
- Carbon-steel frame / galvanized carbon-steel rollers
- Reference unit weight
- 35–80 kg/unit, depending on configuration
Roller pitch changes as the frame extends and curves. The 150 mm reference does not establish support for every carton. Check the smallest base at full working extension and through each curve.
Motor power is stated per 2 m; inverter capacity is a separate selection. Phase, frequency, installed motor count, connected load, controls and permissible goods load are confirmed for the selected machine.
Download configuration reference (HTML) ↓Reference updated 24 October 2026
Delivery and line connections
The selected conveyor is configured to connect with your equipment and site. Include the destination, transfer levels, power supply and control signals. The quotation defines the delivery schedule and installation, connection and commissioning responsibilities.
Powered flexible roller conveyors: Configuration and ordering questions
Explore the configuration, integration and ordering decisions for this equipment. Send your load details and layout to discuss your own project.
Can working length, stored length, width and height be customized?
Yes. These dimensions are set around your operating route, storage area and goods. The selected geometry must work as a complete frame; changing extension or width also changes support and stability requirements.
Is there one fixed extension ratio for every conveyor?
No single ratio defines every custom project. Provide the working and retracted lengths you need so the frame, supports and roller spacing can be selected together; published reference dimensions do not define every made-to-order configuration.
What happens to roller spacing when the conveyor extends?
The spacing increases as the scissor frame opens. The smallest carton base must remain supported at the intended maximum extension and through the required curves.
Can a flexible powered conveyor follow a curved route?
The working layout can include suitable curves selected for the frame and goods. Send a plan of the intended positions and available space; do not assume that any bend radius will preserve carton support.
Can it run continuously or stop at selected positions?
Specify the required flow, hours of operation, stops and receiving sequence. Drive speed, sensing and controls are selected around those conditions and the adjoining equipment.
How is this different from a gravity flexible conveyor?
This version uses driven rollers to move goods. A gravity roller or skatewheel conveyor relies on a suitable slope or manual push and uses a different movement and stopping arrangement.
What must be considered when moving or parking it?
Allow for the retracted envelope, movement path, floor condition and stable support at the operating positions. Cable routing, control access and the repeatable connection to other machines belong in the layout.
What affects the price of a powered flexible conveyor?
Working and retracted lengths, width, height range, roller support, drive and controls affect the cost. Required curves, supports, mobility and connection details also shape the quotation.
What delivery estimate applies to a custom flexible conveyor?
Estimated delivery: 60 days. The written quotation confirms the selected dimensions, options, delivery schedule and installation responsibilities. All products are CE certified.
How much space does the reference unit need when retracted?
The reference unit is 2,000 mm extended and 750 mm retracted. This is the reference unit length, rather than the complete installation footprint. Include supports, the control cabinet, cables and operator access in the installation and storage layout; confirm the final envelope for your selected configuration.
Does the inverter rating describe total electrical consumption?
No. The sheet lists a 120 W drive per 2 m and separate inverter capacity choices of 0.75, 1.5 or 2.2 kW. Inverter capacity is not measured electricity consumption or a whole-machine power rating. The quotation specifies the selected drives, supply and connected load.
Tell us what you need to move.
Send your name, email and handling task. If known, add the goods, desired length, usable width and inlet/outlet heights to your message. These technical details are optional.
Consider the alternatives
Powered roller conveyors
Custom-made powered roller conveyors for cartons and rigid totes. Configure the length, usable width, transfer heights, roller support and controls around your line.
Gravity roller conveyors
Custom-made expandable gravity roller conveyors for cartons and rigid totes. Configure working and stored lengths, width, heights and roller spacing around your handling route.
Skatewheel conveyors
Custom-made gravity skatewheel conveyors for flat-bottom cartons. Configure the expandable frame, working width, heights and small-wheel support around the manual or gravity route.
Truck loading & unloading conveyors
Custom-made truck loading and unloading conveyors combining an inclined belt and supported roller extension. Set width, heights, reach and controls around your cargo and vehicle access.