Bolt-In Angle Hold-Downs for Troughs
Introduction
Screw conveyors are used throughout lime, limestone, and mineral processing. Most screw conveyors require hanger bearings to support each screw section. Hard iron bearings work well when conveying lime and limestone. However, dolomite is very abrasive and can cause premature wear on hanger bearings. The Maintenance Supervisor at a lime producer wanted to eliminate hanger bearings in several screw conveyors handling dolomite. Working closely with the plant, KWS redesigned the screw conveyors to utilize close-coupled and clocked screws, abrasion-resistant trough liners and bolt-in angle hold-downs.
Screw conveyors are used throughout lime, limestone, and mineral processing. Most screw conveyors require hanger bearings to support each screw section. Hard iron bearings work well when conveying lime and limestone. However, dolomite is very abrasive and can cause premature wear on hanger bearings. The Maintenance Supervisor at a lime producer wanted to eliminate hanger bearings in several screw conveyors handling dolomite. Working closely with the plant, KWS redesigned the screw conveyors to utilize close-coupled and clocked screws, abrasion-resistant trough liners and bolt-in angle hold-downs.
Screw conveyors are used throughout lime, limestone, and mineral processing. Most screw conveyors require hanger bearings to support each screw section. Hard iron bearings work well when conveying lime and limestone. However, dolomite is very abrasive and can cause premature wear on hanger bearings. The Maintenance Supervisor at a lime producer wanted to eliminate hanger bearings in several screw conveyors handling dolomite. Working closely with the plant, KWS redesigned the screw conveyors to utilize close-coupled and clocked screws, abrasion-resistant trough liners and bolt-in angle hold-downs.

Screws are Close-Coupled and Clocked to Eliminate Hanger Bearings
Features
Heavy Duty Construction – Designed to withstand extreme forces inside screw conveyor
Quick Removal – Access and removal can be accomplished in minutes
Cost Effective – Cost of bolt-in style is comparable to weld-in angle hold-downs
Benefits
Reduce Downtime – Bolt-in angle hold-downs can be removed in minutes saving time and improving productivity
Quick Removal – Using abrasion resistant materials, bolt-in angle hold-downs are designed to exceed the life of the screw
Cost Effective – Existing screw conveyors can easily be fitted with bolt-in angle hold-downs
Exploded View Shows How Easily KWS Bolt-In Hold-Downs Can Be Removed
Hold-Downs Bolt to Side of Trough in Multiple Locations
KWS Bolt-In Hold-Down is Reinforced on Outside of Trough