Synergy Automatics, we manufacture and supply high-quality gravity rollers that are essential components in gravity roller conveyors. Our rollers are designed to deliver smooth, low-friction performance in non-powered conveyor systems used across packaging, warehousing, logistics, and industrial automation environments.
Gravity rollers are unpowered rollers that rely on gravity or manual force to move goods across a conveyor frame. They are a cost-effective and efficient choice for low-complexity material handling.
Technical Specification
- Materials: Carbon Steel / Stainless Steel
- Bearing Housing: Polymide Molded
- Roller Size: Diameter and shaft combinations as per standard chart
- Length: Custom-made to order
- Load Capacity: Refer to table below
- Surface Treatments:
o Zinc Plated (for carbon steel)
o Chrome Plated (for carbon steel)
o Mirror Polished (for stainless steel) - Coatings (Optional):
o PU Coated
o PVC Sleeve
Load Capacity
Load capacity depends on diameter and roller length. Capacity decreases as roller length increases. Capacities are indicative and depend on material and usage.
| Roller Dia | 200mm | 300mm | 400mm | 600mm | 800mm | 1000mm | 1300mm | 1600mm |
| 31.75 x 1.6 | 100kg | 80kg | 50kg | 30kg | x | x | x | x |
| 38.1 x 1.6 | 150kg | 120kg | 90kg | 60kg | 30kg | x | x | x |
| 50.8 x 1.6 | 170kg | 170kg | 150kg | 120kg | 100kg | 80kg | x | x |
| 60.3 x 1.6 | 200kg | 180kg | 160kg | 150kg | 130kg | 100kg | 80kg | x |
| 76.2 x 3 | 500kg | 450kg | 450kg | 450kg | 450kg | 400kg | 300kg | 300kg |
Note: Load-carrying capacity is distributive, not concentrated. Wider rollers require larger diameters for strength.
Design Considerations of Gravity Rollers
- Product Shape: Best for items with flat, even bases. Irregular bases may not roll smoothly.
- Weight Distribution: Eccentric loads may shift or cause instability.
- Roller Pitch: Use smaller pitch for small or unstable items.
- For items like boxes with shifting loads (e.g. half-full), smaller roller pitch prevents tipping or falling.
Limitations
- Not suitable for high-speed or heavy loads without brake rollersLighter items may not roll witho
- ut sufficient slope
- Speed is uncontrolled and varies by weight/incline
- Conveyor length is limited due to required gradient
- Use brake rollers or powered systems for better control
Advantages of Gravity Rollers
Ideal for warehouses, picking lines, and manual operations
Fast installation
Safe and easy to use
Low maintenance
Simple, cost-effective solution
No power required
Why Choose Synergy Automatics for Gravity Rollers?
Specialized in Gravity Conveyor Rollers – We focus on designing and manufacturing industrial gravity rollers built for reliability and long service life.
Custom Engineering – From shaft type and roller pitch to surface coatings, every gravity roller can be tailored to your conveyor design.
High-Precision Manufacturing – Produced with CNC technology and strict QC for consistent performance.
Trusted Across Industries – Our gravity conveyor rollers are used in warehouses, logistics, manufacturing, and food processing facilities.
Quick Supply & Installation – Fast lead times, on-site installation, and full technical support.
Expert Support Team – Dedicated engineers help you select the right gravity rollers for your conveyor system.
Frequently Asked Questions
What are gravity rollers used for?
Gravity rollers are unpowered components used in gravity roller conveyors. They allow goods to move smoothly along a conveyor line using gravity or manual push, making them ideal for warehouses, assembly lines, and packaging systems.
What is the difference between light-duty and heavy-duty gravity rollers?
• Light-duty gravity rollers (Ø31.75–38.1 mm) are best for cartons and lightweight goods.
• Heavy-duty gravity rollers (Ø60.3–76.2 mm) handle industrial loads such as pallets and machinery parts.
Are stainless steel gravity rollers available?
Yes. We supply stainless steel gravity rollers with mirror-polished finishes, perfect for food, pharmaceutical, and cleanroom applications where corrosion resistance and hygiene are critical.
How do I calculate the load capacity of gravity rollers?
Load capacity depends on roller diameter, wall thickness, and roller length. Wider rollers support less weight, while larger diameters handle heavier loads. Refer to our load capacity chart or consult our engineers for accurate recommendations.
What mounting options are available for gravity rollers?
We offer multiple shaft configurations including spring-loaded shafts, female-tapped shafts, and across-flat shafts. The right choice depends on your gravity roller conveyor design and maintenance needs.
Do gravity rollers require power?
No. Gravity conveyor rollers work without electricity, making them low-cost, energy-efficient, and easy to maintain.