Nihot - Debris Roll Screen

The BHS Debris Roll Screen® is a disc screener, using patented screening technology. This proven, patented technology is the premiere sizing tool for Single Stream, Municipal Solid Waste (MSW), Construction and Demolition (C&D) waste, wood waste, compost, green waste, plastics, glass, tires and various other materials. The unique Tri-Discs™ are in-line from shaft-to-shaft, creating a precise opening for highly-accurate material sizing. Their hardened steel, triangular shape provides superior material agitation and true sizing in a small footprint.

The compound disc design provides precise sizing far superior to other disc or “star” screens. Patented gear timing paired with variable speed drives allows for fine tuning for varying material conditions.


  • MSW (Municipal Solid Waste)
  • C&D (Construction and Demolition) Waste
  • Compost
  • Biomass / Wood Recycling
  • RDF (Refuse Derived Fuel)
  • Incinerator Bottom Ash
  • Glass

Key Features

  • Excellent material agitation and separation

  • Sizing: Patented in-line discs provide accurate sizing of material, reducing product loss. 

  • Design: Disc and shaft design reduces material wrap, increasing uptime. 

  • Low Maintenance: Heavy-duty discs ensure long disc lift and reduced maintenance. 

Technical Specification

  • Screen Width: Varies according to the application.

  • Inter-face Openings: Varies according to the application.

  • Screen Angles: Varies according to the application.

  • Motors: SEW-EURODRIVE high-efficiency gear motors.

  • Reducers: Shaft mounted

  • Drive Guards: Drive system is enclosed in a solid guard with lift-off door for easy removal and replacement. Grease fittings are plumbed to a common point outside guard for easy bearing maintenance.

  • Bearings: Dodge SC Tapped Base

  • Sprockets: 80Q17 hardened double-single timed sprockets with split taper bushing.

  • Drives: RC 80 chain-driven. Variable frequency drives recommended for operating flexibility, included with controls systems.

  • Auto Lube: Automatic oiler system for the drive chain including reservoir, solenoid, distribution manifold, copper plumbing and adjustable brush applicators.

We are here to help!


Call us today on 01565 723886 to speak to one of our expert team. Alternatively, email us at or fill out the below enquiry form.