• Expandable Gravity Roller Conveyor Belt System
  • Expandable Gravity Roller Conveyor Belt System
  • Expandable Gravity Roller Conveyor Belt System
  • Expandable Gravity Roller Conveyor Belt System
  • video

Expandable Gravity Roller Conveyor Belt System

  • Duffy
  • China
  • 15-20 days
  • 5000m per month
  • BZD110
  • 10 meter
A​‍​‌‍​‍‌ roller conveyor that can be flexibly adjusted in terms of height and flexibly connected with different equipment.


Packaging conveying roller


gravity rollers

Rollers of different materials

Since‍‌‍‍‌ they are designed for automated assembly and warehouse logistics, motorized extendable roller conveyors can be considered as multifunctional materials handling solutions.

Based on a heavy-duty frame, high-performance rollers, motor unit and complete drive assembly, this equipment makes possible item transportation through motor-driven roller rotation at a very efficient level. Besides that, it allows production requirements to be met very well. The features of the equipment are a space-saving design, excellent telescopic function, flexible routing control, turning avoiding obstacles, strong impact resistance, simple construction, easy maintenance and stable operation over the long term.

The frame of the unit is made from standard carbon steel tubing (square or round) and equipped with first-class lockable casters, while the surface is durable and powder-coated. Various drive systems are offered such as O-belt, multi-ribbed belt and synchronous belt, with customization available to meet customer's unique requirements.


Expansion ratio:  530:1000/ 530:1250/ 740:2000

Transmission speed:  10 - 30 m/min

Product Specifications Table

No.ParameterUnitSpecification
1Frame Color-Black
2Equipment Material-Carbon Steel
3Overall HeightmmDual Rods: 600–850
4Total Weightkg/unit35-80
5Unit Lengthmm1000/1250/2000
6Extension Ratio:530:1000/530:1250/740:2000
7Drive Direction-Bidirectional
8Conveying Speed-10-30m/min
9Dynamic Loadkg/80
10Static Loadkg/120
11Minimum Turning Radiusmm1200
12Roller LengthmmStandard 600, 800
13Roller Spacingmm50/75/100
14Number of Rollerspcs10/10/14
15Roller Diametermm50
16Roller Shaft Coremm12
17Roller Wall Thicknessmm≥1.5
18Drive Roller Link Plate Thicknessmm≥3.5 (reinforced stamped, galvanized)
19Drive Roller Surface Treatment-Carbon steel galvanized
20Roller Poly-V Belt Sprocket Material-Steel 45#
21Motor Wheel Material-Steel 45#
22Guide Wheel Material-Steel 45#
23Guide Wheel Mounting-Through Shaft
24Frame Square Tube Steel-35*35+30*30
25Frame Square Tube Wall Thicknessmm≥1.5 (black electrophoretic coating)
26Side Cover-Not included
27Support Legs-Square tube design / height adjustable
28Casters-Lockable swivel casters (front, middle, rear); non-braked casters for other positions
29Caster Size Modeldiameter/mmStandard 4-inch
30Drive Type-Poly-V Belt
31Drive Belt Model-3PJ
32Emergency Stop Button-1
33Rated VoltageV220/380
34Reducer Brand / PowerW/unitBrand: Dafei; Power: 120
35Inverter Model Speckw0.75/1.5/2.2
36Control Box-Safe and compliant wiring; insulated entry/exit ports
37Control Box Components-Chint and other top domestic brands
38Cable-Straight line
39Equipment Wiring-Standard-compliant wiring; power cable with earth leakage protection
40Packaging Material-PE stretch film wrapping
41Whole Machine Warrantymonths12


   Factory Introduction

Optimize your warehouse and distribution efficiency with tailored intelligent logistics solutions from Duffy Machinery, a leading material handling specialist based in Fujian, China.Since our establishment in 2007, we have spent more than 10 years refining intelligent operational systems, with our core team offering 14 years of professional manufacturing experience for each customized project.

With a 35,000㎡ factory and 100+ skilled staff, Our factory is capable of producing 73,000 meters of roller conveyor lines and 2,000 incline conveyors annually; with a total of seven complete production lines, we ensure stable production and on-time delivery. We have obtained over 40 professional certifications and patents, including ISO9001, CE, EACC and national high-tech enterprise certification, which fully demonstrate our quality strength. Our solutions are widely recognized by global customers in the Middle East, South America, North America, Southeast Asia and other regions, supported by comprehensive after-sales service to ensure stable and efficient operation.



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gravity rollers

   Factory Certificate

conveyor rollers for sale

conveyor belt rollers

gravity rollers

Company Strength & Certification

We have 42 authoritative industry certifications to our name, including ISO 9001, CE, and EACC, which comprehensively meet international safety and quality standards. Our expert

engineering team, comprising 18 members, is experienced in research and development, design, installation on site, and after-sales support. We offer end-to-end one-stop

services, from the first blueprint design to long-term post-project maintenance, drastically easing customer's workflow and reducing Voperational burdens.


Case Study

A major fire door manufacturer in Jinhua, Zhejiang, was facing significant material transportation problems due to the increase in their order volume. The production process

requires heavy materials like metal sheets and fireproof fillers, but the old transportation methods were not capable of meeting the production speed resulting in material backlogs, production line stoppages, and delivery delays.

To counter these challenges, the company decided to install our reciprocating vertical conveyor. This machine comes with a robust frame design and high load-bearing capacity,

allowing the company to link the cutting, assembly, and inspection processes closely. Also, the frequency of conveying is adjusted automatically according to production needs,

thus, eliminating the transportation bottlenecks effectively.

With these measures, the production heavy material transportation efficiency was raised almost 30%, and the production stoppage due to material stockouts was reduced by more

than 80%. The model of material transfer with "zero waiting" was realized completely, on basis of which the company was prepared to increase capacity with ease and they have

also effectively showcased our ability to optimize production workflows as well as industrial upgrading.


   Customer concerns (FAQ)

1.What’s the maximum load rating for your rollers and full conveyor systems?

The normal configurations can carry a load of 100kg per square meter, whereas the heavy-duty variations (1.5mm wall thickness) can handle loads as high as 150kg/㎡. Each

roller is subjected to a 72-hour continuous full-load fatigue test in order to ensure performance stability.


2.Can you customize the conveyor dimensions? Is on-site assembly straightforward?

Both width (300–1500mm) and modular length are fully customizable. Systems arrive pre-packaged as complete assembly kits, enabling two workers to finish on-site set-up within hours—no specialized welding required.


3.What factors determine pricing? Are there bulk order incentives?

We base our prices on factors such as the chosen material, load capacity level, custom dimensions, and the inclusion of optional accessories. For large orders exceeding 100 meters,

we provide volume discounts (5–15%) and also offer layout design and load verification assistance free of ‍‌‍‍‌charge.


4.What’s‍‌‍‍‌ the minimum order quantity for your conveyors?

The minimum order quantity for roller conveyor systems is 10 meters.


5.What shipping methods are available for international orders?

We provide shipping methods are sea freight (FCL/LCL) for complete systems, land transport for close countries, and air express for urgent spare parts or small components.


6.How do you package equipment for secure global delivery?

Multiple-layer protective packaging: first, PE stretch film inside for moisture/dust protection, next, reinforced metal/wood support frames for stability, and finally, ISPM-15 compliant fumigation-free wooden crates for maximum impact protection.


7.Which payment methods do you support?

We authorize secure T/T (Telegraphic Transfer) and UnionPay for all international ‍‌‍‍‌transactions.


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