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Technical Information


Adherence to strict standards allows Dorris to offer the warranty of Two Years / 4000 Hours

Features and Benefits

Sizes 107 to 700

Gear Ratios of 5:1 to 250:1

Narrow Design

Quick Release

Tapered Bushings

C Face and Scoop Motor Mount Options

Sizes 107 to 407

Gear Ratios of 5:1 to 40:1

Narrow Design

C Face  Motor Mount Options

Broad Ratios (1.5 to 250:1) - Sizes 900 to 10000

Torque ratings to 240,000 in-lbs output

Multiple shaft arrangements and mounting positions

Unique sizes under 5800

Tapered roller bearings throughout

Standard, modified and custom drives

Selection and Ordering

Engineering Information

Sheave ratio calculation; Minimum Sheave Diameters; Backstop Torque Capacities; Low Speed Thrust Capacities; Gearbox Selector

Trough Ends

Dorris TEF trough ends; Type FE, FL or TU trough ends; Trough End Adaptor

Packing Gland Options: 

Standard Packing Gland, High Performance Packing Gland and Grease/Air Purge Packing Gland.

Installation, Lubrication and Maintenance Instructions

Download CAD Drawings for Dorris Products

General Terms & Conditions of Sale

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