Series G
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(INDUSTRIAL GEARBOX) INDUSTRIAL GEARBOX CONE DRIVE GEARING SOLUTIONS

PRODUCTS IN THE RANGE Serving an entire spectrum of mechanical drive applications from food, energy, mining and metal; to automotive, aerospace and marine propulsion, we are here to make a positive difference to the supply of drive solutions. Series A Worm Gear units and geared motors in single & double reduction types Series B Conex helicoidal gear geometry right angle gearmotors and reducers Series BD Screwjack worm gear unit HTP High torque planetary gear units Series BS Worm gear unit Series C Right angle drive helical worm geared motors & reducers DuoDrive Dual gears on parallel output...

SERIES G General Description 1 Unit Designations 2 Design Features 3-4 Explanation and use of Ratings and Service Factors 5-7 Selection Procedure 8-9 Unit Handings and Shaft Rotations 10 -11 Installation & Maintenance 13 - 17 Fault Diagnosis Lubrication 18 19 - 21 Standard Shaft Sealing Arrangements 22 Input Shaft Options 23 Output Shaft Options 24 Output Bore Options 25 REDUCER Overhung & Axial Loads on Shafts 28 - 29 Agitator Applications 30 - 31 Parallel Shaft Units Moments of Inertia 34 Exact Ratios 35 Mechanical Ratings - Input Power / Output Torque Thermal Ratings Dimension Sheets -...

SERIES G GENERAL DESCRIPTION Series G Series G gear units are available in parallel shaft helical units and right angle shaft bevel/helical units in double, triple and quadruple reduction gear stages. Parallel shaft unit The modular design and construction of the Series G offers many engineering and performance benets including a high degree of interchangeability of parts and sub assemblies. This in turn provides considerable economies of production while maintaining the highest standard of component integrity. Adding to the range of power transmission geared motors this product takes...

SERIES G UNIT DESIGNATIONS 1 2 3 4 5 6 7 8 9 10 G 1 4 3 0 5 0 . H N 11 12 13 14 15 16 17 18 19 20 * THIS PAGE MAY BE PHOTOCOPIED ALLOWING THE CUSTOMER TO ENTER THEIR ORDER * EXAMPLE N - N R L 1 - - - 20 - TORQUE ARM & GEARCASE FINISH 1 - SERIES G RANGE G -T 1 4 THROUGH 2 - STD EXTREME CLIMATIC PAINT F 2 TORQUE ARM + STD PAINT C 2, 3 - SIZE OF UNIT NO TORQUE ARM + STD PAINT - STD EXTREME CLIMATIC PAINT + TORQUE ARM - SPECIAL Z 4 - NO OF REDUCTIONS 2 THROUGH 19- CASE CONSTRUCTION 4 S 5 - REVISION VERSION 0 - CAST IRON - SG (ductile) IRON ETC. 18- OIL LEVEL 6, 7, 8 - - - DIPSTICK G -...

SERIES G DESIGN FEATURES Shaft Mounted Units Shaft mounted units can be mounted on the driven machine shaft extension and connected to the foundation by a torque arm, supplied as an optional extra. Additionally, unit feet are available for mounting on a baseplate with motor and coupling, the complete assembly being mounted on the driven machine shaft extension and connected to the foundation by a torque arm. Shaft mounted units are tted with a 'shrink disc' device to provide positive clamping on the driven machine shaft extension. Shaft mounted units with keyed sleeves may also be supplied...

SERIES G DESIGN FEATURES Gears High quality alloy case hardening materials provide long life wear resistance and fatigue strength. Prole ground single helical gears and hard nished spiral bevel gears ensure high standards of accuracy, Surface nish and quiet running characteristics. Helical gears are tted in parallel shaft units. Units with shafts at right angles incorporate spiral bevel and helical gears. Gearcases Standard gearcases are of rigid cast iron construction with modern styling, special cases can be supplied as SG (ductile) iron or fabricated steel. Horizontal split case design...

SERIES G EXPLANATION AND USE OF RATINGS AND ASSOCIATED RATING FACTORS Gear unit selection is made by comparing actual loads with catalog ratings. Gear ratings are based upon DIN standards. Catalog ratings are based on a standard set of loading conditions, whereas actual load conditions vary according to type of application. Service Factors are therefore used to calculate an equivalent load to compare with catalog ratings. i.e. Equivalent Load = Actual Load x Service Factor Mechanical and Thermal Service Factor must be considered:- Mechanical Service Factors Fm and Fs Thermal Service Factors...

SERIES G EXPLANATION AND USE OF RATINGS AND ASSOCIATED RATING FACTORS Thermal ratings and service factors The Thermal ratings are a measure of the gear units ability to dissipate heat. If they are exceeded the lubricant may overheat and breakdown, resulting in gear failure. Thermal ratings are given on page 40 for parallel shaft units and page 54 for right angle shaft units. The following choices are available: i) No additional cooling ii) Unit tted with fan cooling iii) Unit tted with water cooling coil iv) Unit tted with cooling coil and fan Catalog thermal limitations are based on the...

SERIES G EXPLANATION AND USE OF RATINGS AND ASSOCIATED RATING FACTORS Driven Machine Table 3 Cranes main hoists bridge travel trolley travel U = Uniform load Crusher ore stone sugar M = Moderate shock load H = Heavy shock load = Refer to Application Engineering Driven Machine Agitators pure liquids liquids and solids liquids-variable density Blowers centrifugal lobe vane Brewing and distilling bottling machinery brew kettles-continuous duty cookers-continuous duty mash tubs-continuous duty scale hopper-frequent starts Can lling machines Cane knifes H Car pullers M Clariers U Classiers M...

SERIES G SELECTION PROCEDURE EXAMPLE APPLICATION DETAILS Absorbed power of driven machine = 120 HP Output speed of gearbox or Input speed of machine = 81 rev/min Application = Uniformly loaded belt conveyor operating in a large indoor space Duration of service (hours per day) = 24hrs Motor speed = 3 phase electric motor, 4 pole, 1750 rev/min Mounting position = Horizontal, Right Angle Shaft Ambient temperature = 86oF (30oC) Running time (%) = 100% Altitude = Sea Level 2 DETERMINE MECHANICAL SERVICE FACTOR (Fm) Refer to Load Classication by Application, table 3, page 7 Application 1750 81...