BR-Series-AM.
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Series A Mid Range Worm Gear

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 BD Screwjack worm gear unit Series BS Worm gear unit Series C Right angle drive helical worm geared motors & reducers Series F Parallel shaft helical geared motors & reducers Series G Helical parallel shaft & bevel helical right angle drive gear units Series H Large...

ATEX Compliance Assured Total compliance with the ATEX Directive safeguarding the use of industrial equipment in potentially explosive atmospheres is assured for users of our geared products. Certification is available for standard gearboxes and geared motors with badging displaying the ATEX zone, name and location of the manufacturer, designation of series or type, serial number, year of manufacture, Ex symbol and equipment group/category. ATEX directive 94/9/EC (also known as ATEX 95 or ATEX 100A) enforced in all EC member states. Compliance is compulsory for designers, manufacturers or...

SERIES AM CONTENTS General Description __________________________________________________________________ 3 Unit Designations ____________________________________________________________________ 4 Explanation and use of Ratings and Service Factors _________________________________________ 5 Load Classification by Applications ______________________________________________________ 6 Moments of Inertia ___________________________________________________________________ 7 Lubrication _________________________________________________________________________ 8 Selection Procedure...

SERIES AM GENERAL DESCRIPTION Single Reduction Units (worm) This fully metric range of units of 100, 125, 160 and 200 mm centres is based on a single universal case for each size, giving a high degree of common parts and interchangeability. Under-driven, over-driven and vertical types provide a choice of shaft arrangements in meeting the requirements of a wide variety of applications in the medium power range up to 140 kW. All units are designed with hollow output bore, outputshaft can be fitted allowing handing to be changed without dismantling the unit. Series A Mid Range gives a choice...

- 20 - Additional Features Paint, Lubricant, Double Oil Seal, Hold Back etc e.g. - Motor Enter - For slow speed applications where greater oil quantities are required 6, 7, 8 - Nominal Overall Ratio 15, 16, 17 - Geared Motor Powers Motor Power Required e.g. . W - STD Unit Machined Face On Left** Y - STD Unit Machined Face On Right** - STD Unit With Output Flange On Left** - STD Unit With Output Flange On Right** B - STD Unit Machined Face On Left** With Base Mounted Feet 12 - Motor Adaptor For G or A Type Unit D - STD Unit Machined Face On Right** With Base Mounted Feet For All Other Types...

EXPLANATION & USE OF RATINGS & SERVICE FACTORS Gear unit selection is made by comparing actual loads with catalogue ratings. Catalogue 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 catalogue ratings. i.e. Equivalent Load = Actual Load x Service Factor Two types of Service Factor must be considered:- Mechanical Service Factor Fm and Thermal Service Factors Ft, Fp and Fd Table1. Mechanical Service Factor Fm Mechanical Ratings and...

LOAD CLASSIFICATION BY APPLICATIONS Driven Machine Table 5 U = Uniform load M = Moderate shock load H = Heavy shock load = Refer to Application Engineering Cranes main hoists bridge travel trolley travel Driven Machine log haul-incline log haul-well type log turning device main log conveyor off bearing rolls planer feed chains planer floor chains planer tilting hoist re-saw merry-go-round conveyor roll cases slab conveyor small waste conveyor-belt small waste conveyor-chain sorting table tipple hoist conveyor tipple hoist drive transfer conveyors transfer rolls tray drive trimmer feed waste...

SERIES AM MOMENTS OF INERTIA MOMENTS OF INERTIA (kg cm2 ) Referred to Input Shaft SINGLE REDUCTION RATIO DOUBLE REDUCTION RATIO

SERIES AM LUBRICATION LUBRICANT AND QUANTITY The Series A Mid Range units are despatched without oil. The oil grade is stamped on the name plate and the oil level marked on the dipstick. These are determined from the operating speed of the gear unit and the ambient temperature range, which if not given when ordering will be assumed to be 1450 rev / min input and ambient temperature range 0 to 35°C. Oil grades and oil level should therefore always be checked before installation, instructions are provided with all units despatched. To determine the oil grade refer to the appropriate table 1...

SERIES AM SELECTION PROCEDURE EXAMPLE APPLICATION DETAILS Absorbed power of driven machine = 3.9kW Output speed of gearbox or Input speed of machine = 20rpm Application = Heavy duty, non uniformly fed bucket conveyor Duration of service (hours per day) = 10hrs Motor speed = 3 phase electric motor, 4 pole, 1450rpm Mounting position = 2 Ambient temperature = 20oC Running time (%) = 100% 2 DETERMINE MECHANICAL SERVICE FACTOR (Fm) Refer to Load Classification by Application, table 5, page 7 Application = Conveyors-heavy duty not uniformly fed apron M assembly M belt M bucket M chain M 1...

SERIES AM SELECTION PROCEDURE 7 DETERMINE THERMAL SERVICE FACTOR (Ft) 8 DETERMINE THERMAL SERVICE FACTOR (Fp) Refer to table 2, page 6 Ambient temperature = Refer to table 3, page 6 Mounting position Nominal Output Speed (rev/min) Ambient -30 temperature °C Factor Ft Ft 9 DETERMINE THERMAL SERVICE FACTOR (Fd) Refer to table 4, page 6 & running time = Input shaft speed (Rev/min) 1450 Output Speed (rev/min) % Running time per hour 10 ETERMINE ALLOWABLE OUTPUT TORQUE THERMAL RATING (Tthem) D Thermal output torque capacity (Ttherm) must be equal or more than absorbed output torque to drive...