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Kuppa Roller / Dumru Roller

The Kuppa Roller, also known as the Dumru Roller, is a specially contoured return roller used in conveyor systems to support and guide the return side of the belt. Its unique hourglass (barrel or drum-like) shape ensures automatic centering of the belt while minimizing belt sway, edge wear, and spillage. Ideal for long or misaligned conveyor runs, it is a self-aligning return roller that also offers partial self-cleaning functionality.

Benefits:

  • Automatically centers the return belt

  • Reduces spillage, belt wear, and misalignment

  • Self-cleaning design reduces carryback and clogging

  • Extends belt and roller life

  • Suitable for dusty, sticky, or abrasive environments

Description

Key Features:

  • Hourglass Shape: Tapered ends with a raised center promote natural belt centering without the need for external guide rollers.

  • Self-Cleaning Action: The contoured surface discourages material buildup and reduces carryback.

  • Robust Construction: Manufactured using heavy-duty steel, HDPE, or a combination of both for long-lasting performance.

  • Low Maintenance: Fewer moving parts, with sealed-for-life bearings, minimize maintenance requirements.

  • Versatile Installation: Can be mounted on standard return brackets or special cradles as required.


Specifications:

  • Roller Diameter (Center): 108mm to 159mm

  • Roller Diameter (Ends): 89mm to 133mm (varies by design)

  • Roller Length: Based on belt width (400mm to 2200mm)

  • Material: Mild Steel, HDPE, or Composite

  • Bearing Type: 2RS sealed deep groove ball bearings

  • Finish: Painted, powder-coated, or galvanized (for steel type)


Applications:

  • Mining and Quarry Conveyor Systems

  • Cement and Aggregate Plants

  • Fertilizer and Chemical Industries

  • Bulk Handling Facilities

  • Coal, Sugar, Salt, and Sticky Material Conveyors

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