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  • A

    MANAGEMENT SERVICE

    ISO 9001

    A

  • A

    High load capacity

    High efficiency ( 0.950.97) thanksto the high performance offeredby the patented hypoid bevel gear pairat output

    Low-noise gearing

  • 1

    3.0 ELECTRIC MOTORS

    1.0 GENERAL INFORMATION

    3.1 GENERAL INFORMATION . . . . . . . . . 120

    3.2 MOTOR ORDERING NUMBERS . . . . 121

    3.3 MECHANICAL CHARACTERISTICS . . 122

    3.4 ELECTRICAL CHARACTERISTICS . . 124

    3.5 BRAKE MOTORS . . . . . . . . . . . . . . . . 127

    3.6 DC BRAKE MOTORS TYPE BN_FD . 128

    3.7 AC BRAKE MOTORS TYPE BN_FA. . 132

    3.8 BRAKE RELEASE SYSTEMS. . . . . . . 134

    3.9 SPECIAL EXECUTIONS . . . . . . . . . . . 135

    3.10 COMPACT MOTOR RATING CHARTS. . 139

    3.11 IEC MOTOR RATING CHARTS . . . . . 142

    3.12 DIMENSIONS . . . . . . . . . . . . . . . . . . . 145

    2.0 BEVEL-HELICAL GEARMOTORS

    2.1 ORDERING NUMBERS . . . . . . . . . . . . 12

    2.2 DESIGN ADVANTAGES . . . . . . . . . . . . 14

    2.3 VERSIONS . . . . . . . . . . . . . . . . . . . . . . 14

    2.4 SPEED REDUCER OPTIONS. . . . . . . . 14

    2.5 SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . 14

    2.6 LUBRICATION. . . . . . . . . . . . . . . . . . . . 15

    2.7 MOUNTING POSITION ANDTERMINAL BOX SPECIFICATION. . . . 16

    2.8 OVERHUNG LOADS. . . . . . . . . . . . . . . 22

    2.9 SHAFT ARRANGEMENT . . . . . . . . . . . 23

    2.10 ANTI-RUN BACK DEVICE . . . . . . . . . . 23

    2.11 INSTALLATION INSTRUCTIONS . . . . . 24

    2.12 GEARMOTOR RATING CHARTS. . . . . 25

    INDEX 2.13 SPEED REDUCER RATING CHARTS . 50

    2.14 MOTOR AVAILABILITY. . . . . . . . . . . . . 64

    2.15 MASS MOMENT OF INERTIA . . . . . . . . 67

    2.16 DIMENSIONS . . . . . . . . . . . . . . . . . . . . 76

    2.17 TORQUE ARM. . . . . . . . . . . . . . . . . . . 1171.1 SYMBOLS AND UNITS . . . . . . . . . . . . . . 2

    1.2 TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . 3

    1.3 POWER . . . . . . . . . . . . . . . . . . . . . . . . . . 3

    1.4 THERMAL CAPACITY. . . . . . . . . . . . . . . 3

    1.5 EFFICIENCY . . . . . . . . . . . . . . . . . . . . . . 4

    1.6 MASS MOMENT OF INERTIA. . . . . . . . . 4

    1.7 SERVICE FACTOR . . . . . . . . . . . . . . . . . 4

    1.8 SELECTION. . . . . . . . . . . . . . . . . . . . . . . 5

    1.9 VERIFICATIONS . . . . . . . . . . . . . . . . . . . 9

    1.10 INSTALLATION . . . . . . . . . . . . . . . . . . . . 9

    1.11 STORAGE . . . . . . . . . . . . . . . . . . . . . . . 10

    1.12 MAINTENANCE. . . . . . . . . . . . . . . . . . . 10

    Revisions

    Refer to page 150 for the catalogue revision index.

    Visit www.bonfiglioli.com to search for catalogues with latest revisionindex.

  • 2

    1.1 SYMBOLS AND UNITS

    1.0 GENERAL INFORMATION

    Symb. U.m. Description Symb. U.m. Description

    Ac [lbs] Calculated thrust load

    An [lbs] Rated thrust load

    fm Adjusting duty factor

    ft Thermal correction factor

    i Gear ratio

    I Intermittence

    Jc [Ibft2] Load moment of inertia

    Jm [Ibft2] Mass moment of inertia for motor

    Jr [Ibft2] Mass moment of inertia for gearbox

    K Acceleration factor of masses

    Kr Transmission element factor

    Tb [lbin] Brake torque

    T [lbin] Torque

    Tc [lbin] Calculated torque

    Tn [lbin] Speed reducer rated torque

    Tr [lbin] Torque required

    n [rpm] Speed

    P [hp] Power

    Pc [hp] Calculated power

    Pn [hp] Motor rated power

    Pn [hp] Rated horsepower

    Pt [hp] Thermal capacity

    Pr [hp] Power required

    Rc [lbs] Calculated radial load

    Rn [lbs] Rated OHL

    Rx [lbs] Radial OHL for load shifted fromshaft midpoint

    S Safety factor

    S.F. Service factor

    ta [C/ F] Ambient temperature

    tf [min] Operating time under constant load

    tr [min] Rest time

    W [ftlb] Brake dissipated energy betweentwo successive air-gap adjustments

    Wmax [ftlb] Maximum energy for each brakingoperation

    x [in] Load application distance from shaftshoulder

    Z [1/h] Number of permitted starts in loadedconditions

    Zr [1/h] Number of starts

    Dynamic efficiency

    d

    Footnotes:

    1 Applies to input shaft

  • 3

    NOMENCLATURE

    1.2 TORQUE

    Nominal output torque Tn2Torque transmitted at output shaft under uniform

    load, referred to input speed n1 and corresponding

    output speed n2.

    It is calculated according to service factor S.F. = 1.

    Application torque Tr2This is torque corresponding to application require-

    ments. It must be equal to or less than rated output

    torque Tn2 for the gearmotor selected.

    Calculated torque Tc2Torque value to be used for selecting the gearbox,

    considering required torque Tr2 and service factor

    S.F., and is obtained by:

    Tc2 = Tr2 x S.F. Tn2

    1.3 POWER

    Rated input horsepower Pn1In the speed reducer selection charts, this is power

    applicable at input shaft referred to speed n1 and

    considering a service factor S.F. = 1.

    Output horsepower Pn2Value represents rated HP as referred to speed reducer

    output shaft.

    Pn2 = Pn1 x d

    Pn2 =T x n

    63025

    n2 2 Pn2 in [hp]; Mn2 in [ibin]

    1.4 THERMAL CAPACITY Pt

    The value indicates the speed reducer thermal limit and

    corresponds to the power transmission capacity under

    continuous duty at an ambient temperature of 20C

    [70F] without using a supplementary cooling system.

    For short operating periods with sufficiently long pauses

    to allow the unit to cool, thermal power is not a factor

    important and it does not need to be taken into consid-

    eration.

    For ambient temperature different from 20C [70F] and

    intermittent duty, Pt value can be adjusted according to

    thermal factor ft listed in table (A1), provided the follow-

    ing condition is satisfied.

    Pr1 Pt x ft

    Gear units A 10 through A 30 are not thermally limited

    and the thermal verification does not apply.

    Pt [hp] [20 C / 70 F]

    n1 = 1750 rpm n1 = 3500 rpm

    A 10 2 6.4 5.4

    A 20 2 8.0 7.2

    A 30 2 10.7 8.9

    A 41 2 13.4 11.7

    A 50 2 27 24.1

    A 60 2 36 31

    A 70 3 42 35

    A 80 3 59 52

    A 90 3 86 76

    (A0)

  • 4

    Acceleration factor of masses K

    Used for establishing the service factor and obtained

    from the following equation:

    K =J

    J

    c

    m

    Where:

    Jc [Ibft2]

    moment of inertia of the driven masses in proportion

    to the speed of the applied motor

    Jm [Ibft2]

    motor moment of inertia

    K1 uniform load

    K 0.25

    K2 moderate shock load

    K 3

    K3 heavy shock load

    K 10

    For values of K > 10, please contact our Technical Service.

    The service factor is the numerical parameter that de-

    scribes the severity of the application. Its value re-

    sults from the combination of the actual duty the gear-

    box is operated at, the number of starts per hour and

    the daily operating hours.

    The graph (A2) here after comes handy when

    calculating the actual value for the service factor:

    1. Enter the chart with the starts per hour [Zr]

    2. Intersect the K_ curve that applies for the appli-

    cation

    3. Read the service factor S.F. from the column

    marked with the applicable hours per day [h/d]

    Intermediate values can be obtained by interpolation.

    (A2)

    ft

    ta max.

    C [F]

    Continuous

    duty

    Intermittent duty

    Intermittence % (I)

    80 60 40 20

    40 [105] 0.8 1.1 1.3 1.5 1.6

    30 [85] 0.85 1.3 1.5 1.6 1.8

    20 [70] 1.0 1.5 1.6 1.8 2.0

    50 [10] 1.15 1.6 1.8 2.0 2.3

    (A1)

    Intermittence (I)% is obtained dividing operating time

    under load [tf] by total time, expressed as a percent-

    age:

    I =t

    t + t

    f

    f r

    x 100

    1.5 EFFICIENCY

    Obtained from the relationship of output power P2 to

    input power P1, according to the following equation:

    =P

    P

    2

    1

    Torque value Mn2 specified in this catalogue takes the

    dynamic efficiency d into account.

    1.6 MASS MOMENT OF INERTIA Jr

    Values for the moment of inertia specified in the cata-

    logue refer to gear unit input shaft.

    They are therefore related to motor speed, in the

    case of direct motor mounting.

    1.7 SERVICE FACTOR S.F.

  • 5

    Application S.F.

    Container

    Main Hoist 3.00Boom Hoist 2.00Trolley DriveGantry Drive 3.00Traction Drive 2.00

    Mill Duty

    Main Hoist 3.50Auxiliary 3.50Bridge Travel 3.00Trolley Travel 3.00

    Industrial Duty

    Main 3.00Auxiliary 3.00Bridge Travel 3.00Trolley Travel 3.00

    CRUSHERS

    Stone or Ore 2.00

    DREDGES

    Cable Reels 1.50Conveyors 1.50Cutter Head Drives 2.00Pumps 2.00Screen Drives 2.00Stackers 1.50Winches 1.50

    ELEVATORS

    Bucket 1.50Centrifugal Discharge 1.25Escalators 1.25Freight 1.50Gravity Discharge 1.25

    EXTRUDERS

    General 1.50

    Plastics

    Variable Speed Drive 1.50Fixed Speed Drive 1.75

    Rubber

    Continuous Screw Operation 1.75Intermittent Screw Operation 1.75

    FANS

    Centrifugal 1.25Cooling Towers 2.00Forced Draft 1.25Induced Draft 1.50Industrial & Mine 1.50

    FEEDERS

    Apron 1.50Belt 1.50Disc 1.25Reciprocating 2.00Screw 1.50

    (A3)

    Application S.F.

    AGITATORS

    Pure Liquids 1.25Liquids & Solids 1.50Liquids - variable density 1.50

    BLOWERS

    Centrifugal 1.25Lobe 1.50Vane 1.50

    BREWING AND DISTILLING

    Bottling Machinery 1.25Brew Kettles - Continuous Duty 1.25Co