Foote Jones Gear Box EL301 EL302

Web: www.footejones.comE-mail: [email protected]

Table of Contents F1

F

PRODUCT FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F2 TO F3

APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F4, TO F5

HORSEPOWER RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F6 TO F12

THERMAL HORSEPOWER RATIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F13

ACTUAL RATIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F14

RATIO COMBINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F15

OVERHUNG LOAD CAPACITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F16 TO F17

THRUST LOAD RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F18

DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F19 TO F26

DETAILS OF DRYWELL CONSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F27

HY-POWER Worm Gear Reducers

Phone: (605) 225-0360 Fax: (605) 225-0567

Worm Gear ReducersF2



Application Information F3

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See Page F27 for details on drywell construction for vertical reducers

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Reducer Application InformationF4


RATING TABLES

Foote-Jones reducers are designed in accordance with applicable AGMA stands. Over 100 years of experience andtens of thousands of units successfully operating in the fieldattest to the high industrial quality of Foote-Jones gear drives.Horsepower values listed are at input, torque values at output,and efficiences are shown. When the desired input speed fallsbetween two catalog speeds, interpolate to determine unit rating.

SERVICE FACTORS

The published reducer ratings in this manual allow for infrequent200% momentary overloads and starting loads. For more severeoperating conditions, consult the AGMA application service factor tables on Pages F6 and F7. If the maximum applied powerexceeds 3 times the catalog rating of the unit, divide the maximum power by 3, and with the result select a reducer withequal or greater rating.

Vibratory and impact loads are not covered in the service factortable and are not covered in the warranty.

Where brakes are used with prime movers, the brake torquemay govern the reducer selection as it usually exceeds normalmotor torque.

Also see section K.

THERMAL RATINGS

The thermal horsepower rating is the reducers ability to transmit an actual load continuously without overheating.

Normal operating temperature for a gear drive may be considered to be 100 F (55 C) rise over ambient, to a maximum of 200F (93C) oil sump temperature. In many casesthe operating temperature may be lower, because gear ratio andloading affect the amount of friction and heat. A suitable temperature gauge should be used to determine overheating asnormal operating temperature feels hot to the touch.

When a reducer operates in sunlight, a canopy should bearranged to shade the unit so that solar energy does not causethe oil sump temperature to rise above 200F (93C).Overheating can cause deterioration of the lubricant and severedamage to the reducer. On applications where the cooling fanmust be eliminated, consult factory for thermal rating of reducerwithout fan.

OVERHUNG LOADS

Overhung load and thrust capacities listed in this manual arebased on the least favorable combined conditions of gear load,and direction of external radial load. If combined overhung andthrust loads are applied simultaneously, consult factory givingcomplete application details. Effective overhung load varies withthe type of overhung member. Service factors must be appliedto the actual load values using K factors and load location factors (LLF) for correct application.LLF-Load location factors are listed on Page F17. The center ofthe overhung load should be located as close to the shaft sealas possible to get the maximum bearing life.

Formula for calculating Overhung Load

OHL = HP* x 63000 x K x LLFRPM x Pitch Radius

*Output HP = Motor HP x Reducer EfficiencyOverhung Member K Factor

Sprocket 1.00Spur Pinion 1.25

V-Belt Sheave 1.50Flat Belt Pulley 2.50

The calculated equivalent overhung load should not exceed theoverhung load values included in the rating tables. If the overhung load on either the input or output shaft should exceedthe listed permissible values, either: (a) increase the pitch radiusof the overhung drive member; or (b) use a larger reducer; or (c)provide an outboard bearing. Overhung load ratings as shown inthe tables are based on the load being applied at the midpointof the keyway on a standard shaft extension.

Careful analysis of the application is important in selecting thereducer size.

Foote-Jones Hypower Reducers are designed for 5000 hoursminimum L10 bearing life (25000 average hours). Overhungload capacities are calculated at the least favorable combinationof rating, speed, rotation, and direction of applied load. If one ormore of the above conditions is favorable, the L10 life and overhung load rating will increase.

Additional bearing life may be expected of the full cataloguedreducer rating is not used. In this case, to determine theabsolute minimum L10 bearing life, divide the reducer rating bythe transmitted horsepower to find the service factor and readthe L10 life from the chart below.

Service L10 Bearing Service L10 BearingFactor Life Factor Life

1.0 5000 1.75 322321.1 6868 1.86 40000

1.25 10512 2.0 502811.4 15331 2.11 600001.5 19291 2.25 744281.6 24000 2.46 100000

THRUST LOADS

Some applications have external thrust loads imposed on thereducer bearings (see Page F18 for the thrust load capacities).Consult the factory for applications where both thrust loads andoverhung loads are applied simultaneously.

MOUNTING POSITION

All gear reducers are designed to operate with the base mounted horizontally unless specified otherwise. Refer all otherspecial mountings to your Foote-Jones Sales Representative.Modifications to the lubrication system and seals may berequired.


Reducer Application Information F5

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EFFICIENCIES

Since power transmission by worm gearing is accomplished bythe worm thread rubbing on the worm gear tooth, worm gear drives are generally less efficient than helical gearing that transmits power by rolling action.

Worm gear efficiency can be approximated as follows:

Efficiency = 100 - Ratio2

Actual efficiencies are shown in the rating tables.

Higher worm lead angles and pitch line velocities result in higher efficiences. In some cases the efficiences of worm gearing and helical gearing can be extremely advantageous.Efficiency alone should not be the measure of gear selection

OPERATIONAL CONSIDERATIONS

Foote-Jones reducers will perform satisfactorily for the ratingspecified on the Foote-Jones certified print and nameplate providing each is properly installed and operated within thespeed and torque limits and other load and environmental conditions for which it was sold, and maintained in accordancewith the Foote-Jones Maintenance Manuals.

It is imperative that the drive SYSTEM be free from criticalspeeds, torsional and lateral vibratory loads within the operatingspeeds, torsional and lateral and lateral vibratory loads withinthe operating speed range, no matter how induced.Responsibility for the system analysis rests with the Buyer.Foote-Jones terms and conditions of sale shall supersede anycatalog or sales bulletin data and will prevail in any dispute.

ENVIRONMENT

The standard reducer is designed to operate in a protected location with reasonable ventilation, free from temperatureextremes (below 10F or above 100F for significant periods)or severe dust, toxic, explosive, or other unusual environments.Modifications such as special seals, heaters, heat exchangers,etc., could be required for these unusual conditions. Consultyour Foote-Jones Sales Representative.

SAFETY

It is the purchasers responsibility to determine the applicablelocal and national safety codes related to speed reducers for thespecific installation involved. Shaft guarding and noise levelrequirements particularly should be checked, and any requirements involving the reducer clearly specified.

Applications involving transportation of people, such as passenger or freight elevators, man lifts, escalators, ski lifts orski tows must be referred to the factory with full application data.

STORAGE

All units are coated with a rust-inhibiting oil during the shop test,and shaft extensions are coated with a dry-film preservative.

This treatment will provide adequate protection for normal periods during installation. It is recommended the units be protected during storage, and periodic inspection is recommended and retreatment applied, if necessary.

Long Term Storage for more detailed storage instructions,refer to the Maintenance Manual.

LUBRICATION

The satisfactory operation of Hypower Worm Gear Reducers isdependent on correct lubrication and treatment in full consideration of ambient conditions.

LOW TEMPERATURE OPERATION

When temperatures are below 14 degreesFahrenheit (-10C), please refer to the factory for recommendations giving ambient temperature expected andoperating cycle.

GREASE LUBRICATION - VERTICAL REDUCER

Grease lubricate the upper and lower output shaft bearingsonce a month at the grease fitting. A good grade of antifrictionbearing grease or its equivalent should be used. It should haveneutral and channeling characteristics with a consistency ofNLGI #2. It should not be subject to excessive bleeding or deterioration.

In the food (including animal food) and drugindustry, consult the petroleum supplier for recommendation oflubricants which are acceptable to the Food and DrugAdministration and/or other authoritative bodies having jurisdiction.

For more information on lubrication, refer to maintenance manual.

AmbientTemperature 14 to 50 50 to 122FRange (-10 to +10C) (10 to 50C)

Normal Heavy Duty Normal Heavy DutyService Service Service Service

AGMA 7 8Lubricant # Compounded 7EP Compounded 8EPASTMViscosity S2150/C460 S3150/C680GradeISOViscosity 460 680GradeViscosity mm2/s 414 to 506 612 to 748Range @ cst104F SSU 1919 to 2346 2837 to 3467(40C)

CAUTION

WARNING

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Horsepower RatingsF6


RATINGS IN SHADED AREAS EXCEED THERMAL RATINGS.REFER TO PAGE F13 FOR THERMAL LIMITATIONS.


Horsepower Ratings F7

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Thermal Horsepower Ratings F13

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Actual RatiosF14



Ratio Combinations F15

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Overhung Load Capacities - Output ShaftF16



Overhung Load Capacities - Input Shaft F17

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Thrust Load RatingsF18



Horizontal Gear Reducer Dimensions F19

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Horizontal Gear Reducer DimensionsF20



Vertical Gear Reducer Dimensions F21

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Horizontal Gear Reducer DimensionsF22



Vertical Gear Reducer Dimensions F23

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Phone: (605) 225-0360 Fax: (605) 225-0567

Vertical Gear Reducer DimensionsF24



Horizontal Gear Reducer Dimensions F25

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Phone: (605) 225-0360 Fax: (605) 225-0567

Vertical Gear Reducer DimensionsF26



Dry Well Construction Type V-Vertical Gear Reducers F27

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TYPES V, HV AND DV

The Vertical configuration of HYPOWER worm gear units, sizes 40 through 120,has a dry well construction to provide positive protection against leakage downthe output shaft.

Notice that the low speed bearing retainer (A)extends upward from the bottom of the reducerhousing into the disc-shaped center plate of theworm gear (B). This retainer and the housingwall (C) form the oil reservoir for the reducer.The worm bearings and the gear mesh areproperly lubricated from this oil reservior.

The lower worm gear shaft bearing (D) is notlubricated by the oil bath, but by grease lubrication supplied from an external grease fitting (E). By doing so, the worm gear shaft isnot subjected to a pressure head of liquid lubricant and the possibility of leaking down thisshaft is eliminated.

Phone: (605) 225-0360 Fax: (605) 225-0567

NotesF28


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Foote Jones Gear Box EL301 EL302