GEARBOX RATING CHARTS GEARBOX RATING CHARTS . . . . . . . . . . 32 PERMITTED OVERHUNG LOADS ON OUTPUT SHAFT . . . . . . . . . . . . . . . . . 41 SYMBOLS AND UNITS OF MEASUREMENT . . . . . . . . . . . . . . . . . . 2 PERMITTED THRUST LOAD ON OUTPUT SHAFT . . . . . . . . . . . . . . . . . 50 MASS MOMENT OF INERTIA . . . . . . . . . . 59 SELECTING THE GEAR UNIT SELECTING THE GEAR UNIT . . . . . . . . . . . 8 PRODUCT CONFIGURATIONS INPUT AND OUTPUT CONFIGURATION . . . . . . . . . . . . . . . . . . . 20 Revisions Refer to page 84 for the catalog revision index. Visit www.bonfiglioli.com to search...

BONFIGLIOLI RIDUTTORI 1 - GENERAL INFORMATION 1.1 - SYMBOLS AND UNITS OF MEASUREMENT Description Rated thrust load Gear ratio Intermittence Mass moment of inertia Torque Calculated torque Speed reducer rated torque Torque required Speed Horsepower Description Rated horsepower Horsepower required Calculated radial load Rated overhung load (OHL) Service factor Dynamic efficiency Footnotes: □ i value applies to input shaft D2 value applies to output shaft 1.2 - PRODUCT FEATURES Gear units of the HDP series make optimum use of advanced design features, to offer: • Top torque density. • Superior performance. •...

• Input shaft configurations: - HDP 60 ... HDP 140: solid, single or double-sided shaft with dimensions to UNI/ISO 775-88 (extended length) • Output shaft configurations: - solid, single or double-sided shaft with dimensions to UNI/ISO 775-88 (extended length) - hollow shaft with keyway - hollow shaft with shrink disc • Heavy duty taper roller bearings or extra large self-aligning roller bearings from the premium suppliers brands for unparalleled overhung load capacity. • A wide range of customization options are available upon request, including: - auxiliary cooling/heating devices - forced...

• In case of long-term storage all machined surfaces such as flanges, shafts and couplings must be coated with a suitable rust inhibiting product (Shell Ensis or equivalent). Furthermore gear units must be placed with the fill plug in the highest position and filled up with oil. Before putting the units into operation the appropriate quantity, and type, of oil must be restored. 1.6 - CONDITIONS OF SUPPLY Gear units are supplied as follows: • configured for installation in the mounting position specified when ordering; • tested to manufacturer specifications; • mating machined surfaces come unpainted; •...

1.9-LUBRICATION HDP gearboxes are lubricated with a mixed immersion and splash system. Should the drive speed n be lower than 500 rpm please contact Bonfiglioli Technical Service. In mounting position V5, top bearings of sizes HDP 60 to HDP 90 are grease packed and fitted with Nilos grease retainers, unless the order specifies a forced lubrication system with mechanical pump (optional variants OP1, OP2) or electric pump (option MOP). If HDP 100 to 140 gearboxes have to be installed in mounting position V5, with the output shaft vertical, one of the above mentioned forced lubrication systems must be...

Lubricant must be pre-heated through the appropriate electric resistance (HE option) in the following cases: • operation at ambient temperatures lower than 0 °C / 32 °F. • operation of gear units lubricated by oil immersion and splashing when the minimum ambient temperature exceeds the pour point of lubricant by less than 10 °C / 50 °F. • Upon starting up gear units with forced lubrication systems (options OP1, OP2 or MOP) if the oil viscosity exceeds 1800 cst. Depending on the type of lubricant used, this value may be produced with ambient temperatures between 10 °C / 50 °F and 20 °C / 68 °F...

2.2.4 - CALCULATING THE RESULTING OVERHUNG LOAD External transmissions keyed onto input and/or output shafts generate loads that act radially onto same shaft. Resulting shaft loading must be compatible with both the bearing and the shaft capacity. Namely shaft loading (Rc1 for input shaft, Rc2 for output shaft), must be equal or lower than admissible overhung load capacity for shaft under study (Rx1 for input shaft, Rx2 for output shaft). OHL capability listed in the rating chart section. The procedure described above applies to both the input shaft and the output shaft, but care must be taken...

BONFIGLIOLI RIDUTTORI

1. Overhung loads on output shaft Refer to section 4J_, and verify that both the radial and the axial force acting onto output shaft do not exceed the maximum permitted for the selected product configuration. Only for HDP units size 60 through 90 the HDB option provides higher capacity bearings to cater for particularly heavy external loads. If external loads exceed the capacity of even the heavy-duty bearings, consider providing external support for the drive shafts, reducing external loads or, if necessary, selecting a gear unit of the next size up. When checking the overhung load capacity...

BONFIGLIOLI RIDUTTORI 2.2.7 - THERMAL CAPACITY Thermal capacity PT is the maximum horsepower that the gearbox can transmit mechanically under continuous operation at an ambient temperature of 20 °C / 68 °F, without the internal temperature rising to a value that could damage the gearbox inner parts. Checking the thermal capacity may not be necessary if the gear unit operates continuously for less than 3 hours followed by a rest time sufficient to restore the ambient temperature. Overall thermal capacity can be calculated throuhgh the following equation (A9). Total value obtained must be greater...

BONFIGLIOLI RIDUTTORI

BONFIGLIOLI RIDUTTORI

2.3 - SAMPLE APPLICATIONApplication data a) _ 1100 n2 90 drive speed n1 = 1100 rpm Safety factor S.F. = 2 b) o/p speed n2 = 90 rpm Torque Tr2 = 25,000 lbs-in Operating cycle per hour: 100% ^ f|NT = 1 Pt = (PtB X fTA X fAMB X fALT X f|NT) — (PtO X fi X frh) + (PfAN X frA X fALT) + PsR + PmRCW + PmCRA= 25 hp Option 1 Option 2 - Fan cooling - Cooling coil