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PG Series - Planetary Gearbox

PG Series - Planetary Gearbox
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PG Series - Planetary Gearbox

Product catalog summary
Product Overview
The document details Italgroup's planetary gear units, highlighting their modular construction for various configurations, including bevel gears, worm gears, hydraulic brakes, and different input shafts. These units are designed for compactness, simplicity, and reliability, suitable for industrial machinery and mobile equipment.
Applications
Planetary gear units are versatile, used in marine directional propellers, concrete pumps, cranes, wind power generators, water treatment, and amusement park rides, fitting both stationary and mobile industrial equipment.
Technical Characteristics
Key parameters include:
  • Reduction Ratio: Specific to each drive, indicating input to output speed ratio.
  • Maximum Input Speed: Highest allowable speed under intermittent conditions.
  • Efficiency: Generally high, ranging from 0.97 to 0.98 per reduction stage.
  • Continuous Torque: Defined by ISO 6336, indicating maximum stress for unlimited life.
  • Maximum Torque: Peak torque the unit can handle briefly without damage.
Operating Conditions
Gear units operate within an oil temperature range of -20°C to +90°C. Exceeding this range requires special lubricants and gaskets.
Service Factor and Load Capacities
The service factor is a multiplier for selecting the appropriate gear unit, considering load conditions. Radial and axial load capacities are specified for output and input shafts.
Modifications and Updates
Italgroup reserves the right to make technical and dimensional modifications without prior notice.
Reducer Selection
Key factors for selecting a reducer include load type, rotation speed, power/torque absorption, and work cycle. Understanding the entire transmission system is essential.
Service Factor (fs)
Used in drive selection formulas to account for application load conditions.
Output and Input Shaft Loads (Fr, Fa)
Radial and axial loads are specified for each drive size, based on ISO 281 standards.
Drive Selection
Requires knowledge of the entire transmission system, including driven equipment and prime mover characteristics.
Technical Information
Initial drive selection involves determining reduction ratio, working torque, and loads on drive shafts.
Verification of Torque
Calculate equivalent working torque using the cumulative load principle for variable loads.
Service Factor Calculation
Account for shocks from intermittent motion and overloads using the service factor.
Verification of Shaft Loads
Calculate equivalent working loads using the cumulative load principle for variable loads.
Radial Loads
Determine maximum allowable radial load and bearing service life for input and output shafts.
Specifications and Procedures
Outlines procedures for determining bearing service life based on load position, applied radial load, and shaft speed.
Technical Information
Provides technical specifications for machinery components, emphasizing that data is for product description purposes only.
Verification of Drive According to Thermal Power
Guidelines for verifying that transmitted power does not exceed specified power, especially for high-speed or continuous duty drives.
Load Conditions and Classifications
Lists machinery types and their load classifications, including industries like food, construction, and chemical.
Installation and Maintenance
Ensure efficient coupling between reducer and machine, proper lubrication, and regular oil changes.
Lubrication
Correct lubrication is essential, with specific guidelines for installation and maintenance.
Lubricant Selection
Recommends using EP additive oils with anti-foaming properties and synthetic oils for high-temperature conditions.
Key Recommendations
Ensure proper alignment, avoid vibrations, and regularly check for oil leaks.
Lubrication Specifications
Provides indicative lubricant quantities, emphasizing verification during filling operations.
Expansion Tank Recommendations
For vertical mounting applications, use an expansion tank to accommodate oil expansions.
Oil Plugs and Mounting Positions
Details various oil plugs and their orientations, along with mounting positions for drives.
Product Identification and Ordering
Outlines product identification system and provides examples of order specifications.
Technical Data and Performance
Includes tables with technical data on performance and dimensions for the PG-PGA series planetary gears.
Overview
Technical specifications and performance data for the PG-PGA series of planetary gear reducers.
Specifications
Outlines various models of the PG-PGA series with parameters like torque, maximum speed, and power.
Performance Data
Tables show torque and speed capabilities across different models.
Dimensional Data
Provides measurements for mounting and installation, including diagrams.
Recommendations
Emphasizes adherence to installation guidelines for optimal performance and safety.
Tables and Charts
Contains tables detailing technical specifications of each model.
Conclusion
This technical sheet serves as a comprehensive guide for understanding the capabilities and specifications of the PG-PGA series planetary gear reducers.
Product Specifications
Provides detailed specifications for various products, emphasizing that data is for descriptive purposes only.
Dimensional Data
Includes measurements and dimensions, indicating specific tolerances and fits.
Torque and Load Capacities
Maximum torque values are specified, valid only with shrink discs supplied by Planetary Drives.
Material and Component Codes
Lists materials and components with corresponding codes, indicating standards like DIN and UNI.
Performance Data
Performance metrics such as power, speed, and torque are provided for different product models.
Tables and Graphs
Contains tables and graphs illustrating load capacities and performance metrics.
Overview
Technical catalogue detailing various mechanical components such as splined rods, bushings, flanges, and shrink discs.
Specifications
Provides detailed specifications for components like splined rods and bushings.
Procedures and Standards
References standards such as DIN 5480 for splined connections.
Performance Data
Key performance metrics such as maximum torque are provided.
Recommendations
Italgroup reserves the right to modify specifications without notice.
Graphical Data
Contains tables and graphs illustrating load capacities and performance metrics.
Critical Information
Data is for descriptive purposes only and should not be interpreted as legally binding characteristics.
Specifications
Technical specifications for various mechanical components, including splined bushings, flanges, shrink discs, and planetary gears.
Procedures
Details on assembly and installation of components are implied through specifications.
Standards and Norms
Adheres to international standards like DIN and UNI.
Recommendations
Italgroup reserves the right to modify specifications without notice.
Key Data from Tables and Diagrams
Torque values range from 176 kNm to 236 kNm, with radial and axial load values provided.
Critical Information
Data is for product description purposes only and not legally binding.
Overview
Technical specifications and configurations for worm gearbox adaptors and combined reduction units offered by Comer Industries.
Specifications
Outlines two main configurations for combined reduction units.
Technical Data
Includes tables listing different types of gearboxes with codes and dimensions.
Notes
Numbers refer to the number of stages in the planetary gear unit.
Geographical Availability
Lists countries where products are available.
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Catalog excerpts

PG Series - Planetary Gearbox-1

H YDRA ULIC MO TORS

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PG Series - Planetary Gearbox-3

INDICE / INDEX Il prodotto Caratteristiche tecniche / Technical characteristics Installazione manutenzione / Installation - maintenance Designazione prodotto / Product identification SCHEDE TECNICHE RIDUTTORI / PLANETARY GEARS TECHNICAL SHEETS ACCESSORI ENTRATA / INPUT FITTINGS Freni modulari / Modular brakes Alberi entrata / Input shafts Entrate dirette / Direct inputs Predisposizioni motori idraulici / Hydraulic motor couplings Predisposizioni motori elettrici / Electric motor couplings Predisposizioni per riduttori a vite senza fine / Worm gearbox adaptors The data specified into the catalogue...

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PG Series - Planetary Gearbox-4

L’utilizzo del riduttore epicicloidale per la trasmissione di potenza è una risposta moderna alle esigenze di ingombri limitati, di semplicità costruttiva e di affidabilità per l’utilizzatore. La famiglia di riduttori epicicloidali PG è offerta al mercato in 21 grandezze di base, selezionate in funzione dei momenti torcenti che possono essere trasmessi all’albero di uscita, che vanno da 0.05 kNm fino a 65 kNm. La modularità del prodotto Italgroup permette l’accoppiamento ai riduttori epicicloidali di coppie coniche, riduttori vite senza fine, freni idraulici, diversi tipi di alberi di ingresso,...

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PG Series - Planetary Gearbox-5

CARATTERISTICHE TECNICHE / TECHNICAL INFORMATION La conoscenza e l’esatta interpretazione dei dati riportati sul presente catalogo sono condizione indispensabile per la scelta e l’impiego corretto dei prodotti presentati. È importante quindi definire alcuni parametri caratteristici: RAPPORTO DI TRASMISSIONE i È il valore effettivo del rapporto tra la velocità di entrata n1 e la velocità di uscita n2. Viene indicato per ogni tipo di riduttore nella relativa scheda tecnica. VELOCITÀ MASSIMA IN ENTRATA n1max [min-1] Rappresenta il valore massimo accettabile per ogni grandezza di riduttore, in condizioni...

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PG Series - Planetary Gearbox-6

CARATTERISTICHE TECNICHE / TECHNICAL INFORMATION TEMPERATURA DI FUNZIONAMENTO Le temperature dell’olio a cui i riduttori possono funzionare sono quelle comprese tra -20°C e + 90°C. Temperature al di fuori di questa fascia possono essere accettate se si prevedono particolari accorgimenti relativi ai tipi di lubrificante e di guarnizioni utilizzati. Tali accorgimenti possono essere decisi caso per caso, d’accordo con il Servizio Tecnico-Commerciale Italgroup Industries. POTENZA TERMICA Pt [kW] È la potenza massima trasmissibile dal riduttore in funzionamento continuo con lubrificazione normale...

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PG Series - Planetary Gearbox-7

CARATTERISTICHE TECNICHE / TECHNICAL INFORMATION FATTORE DI SERVIZIO fs È un coefficiente di moltiplicazione che viene inserito nella formula per la scelta del riduttore. Serve per tener conto delle condizioni di carico dell’applicazione, ed è definito dalla Tabella 2 SERVICE FACTOR fs Service factor fs is a multiplication coefficient introduced into the formula for selecting the drive. This factor takes into account the application load conditions. It is defined in Table 2. CARICHI SULL’ALBERO DI USCITA E ENTRATA Fr ; Fa [N] Fr =carico radiale Fa =carico assiale I valori dei carichi applicabili...

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PG Series - Planetary Gearbox-8

CARATTERISTICHE TECNICHE / TECHNICAL INFORMATION Queste informazioni permettono una prima scelta dei riduttori dopo aver determinato: • rapporto di trasmissione i • coppia di lavoro M [kNm] • carichi sull’albero in uscita e in entrata al riduttore Fr; Fa [N] With this information an initial drive selection can be made, determining the following: • reduction ratio i • working torque M [kNm] • loads Fr and Fa [N ] on drive output and input shafts Successivamente si dovrà procedere alle verifiche dei parametri caratteristici dei riduttori come segue: I) velocità in ingresso al riduttore ≤ n1 max...

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PG Series - Planetary Gearbox-9

CARATTERISTICHE TECNICHE / TECHNICAL INFORMATION 10 Determinazione del fattore dl servizio fs L’effetto degli urti derivanti da irregolarità del moto, dai sovraccarichi nei transitori di velocità (avviamenti ed arresti), viene conteggiato introducendo un fattore di servizio fs. La Tabella 2 indica i fattori fs in funzione del tipo di applicazione. Service factor fs calculation The effect of shocks generated by intermittent motion and overloads during starts and stops must be calculated, introducing a service factor fs. Table 2 indicates the service factors fs in relation to the type of operation....

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PG Series - Planetary Gearbox-10

CARATTERISTICHE TECNICHE / TECHNICAL INFORMATION VERIFICA DEL RIDUTTORE IN FUNZIONE DEI CARICHI SULL’ALBERO DI USCITA E DI ENTRATA Calcolo dei carichi equivalenti Fre; Fae [N] Analogamente a quanto fatto per il calcolo della coppia equivalente, quando il carico è variabile nel tempo, si deve determinare il valore del carico medio equivalente. Con il criterio del cumulativo di carico si determina, con la formula sotto indicata, il carico in grado di provocare lo stesso livello di usura sui cuscinetti dopo il numero di cicli (nxh) richiesto dal progetto: 10/ 3 Fattore di servizio fs Il fattore...

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PG Series - Planetary Gearbox-11

CARATTERISTICHE TECNICHE / TECHNICAL INFORMATION To determine the admissible radial load capacity of a selected input or output shaft, based on known parameters, follow the steps described below: 1. Select the bearing service life chart for the selected input or output shaft (radial load curves for output shaft versions are shown on the drive technical sheets, while the curves for input versions can be found on page D-4). 2. Use the curve to find the radial load (Fr) value with reference to the distance E. Per determinare la capacità di carico radiale massimo ammissibile di un albero di entrata...

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PG Series - Planetary Gearbox-12

CARATTERISTICHE TECNICHE / TECHNICAL INFORMATION 10 Esempio di diagramma del coefficiente di correzione del carico radiale 6. Ora potrete definire quale sarà il carico massimo accettabile Frnxh nella posizione E che garantirà la durata di vita dei cuscinetti richiesta applicando la seguente formula: Frnxh = Fr x K Example of radial load correction factor chart for input and/or output shaft versions 6. Now you can determine the acceptable radial load Frnxh at the known position E to meet the bearing service life requirements, applying the following formula Frnxh = Fr x K Come determinare la durata...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.