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K series

Product catalog summary

General Specifications of K Series Gearboxes:
K Series gearboxes are helical-bevel geared monoblock housing gearboxes designed for high efficiency and strength. They feature perpendicular input and output shafts and offer flexible connection options, including IEC B5 or B14 connections. Small sizes are available in 2 and 3 stages, while larger sizes are 3-stage types. They can be configured for high reduction operations up to 6 stages using double housings.

Design Principles:

High technology use
Reliability
High power density
High efficiency
Compatible mounting
Flexible solutions

Important Considerations:

Drawings are illustrative and not binding.
Product changes can occur without notice.
Operating instructions must be followed before commissioning.
Oil quantities are guides; check with oil level plugs.
Incorrect mounting position voids warranty.

Technical Explanations:

Output Torque (M2): Calculated by multiplying motor output torque by transmission ratio and efficiency.
Nominal Torque (Ma): The mechanical torque the gearbox can resist under fs=1 conditions.
Nominal Power (Pe): The power the gearbox can resist under fs=1 condition, detailed in performance tables.
Ratio (i): The ratio between output and input shaft speeds, ranging from 3.5 to 23500.
Equivalent Power and Torque: Calculated for constant speed but variable conditions.
Required Power (PM): Power needed to drive the system.
Required Torque (T): Must be equal or less than the output torque for the selected gearbox.
Permissible Axial and Radial Loads: Defined for output or input shafts.
Service Factor (fs): A safety coefficient for different working conditions, fs=1 for uniform loads.

Technical Specifications:

Noise Level: Below permitted values as per VDI guidelines 2159.

Overview: The document provides technical specifications and classifications for various types of bevel-helical gearboxes and geared motors, focusing on the IEC B5/B14 flanged input configurations. It includes details on motor connections, output shaft types, and flange options.

Specifications: The document outlines different models of gearboxes and geared motors, such as KV..03, KV..04, KV..05, and others, each with specific input and output configurations. These include hollow and solid shafts, double output shafts, and flange options.

Unit Designation: The document provides examples of unit designations, explaining the meaning of each component in the designation code, such as series, motor connection type, gear unit size, revision number, stage number, motor type, and brake type.

Motor Size and Stages: A detailed table lists the geometrically possible combinations of gear ratios according to motor size and stages, ranging from sizes 63 to 280, and stages 2 to 6.

Service Factor: The service factor (fs) is a safety coefficient that accounts for different operating conditions. It depends on operating time, load nature, start-up frequency, and driver type. The document provides guidance on selecting the appropriate service factor based on these parameters.

Load Classification: The document classifies loads for various applications, such as cranes, pumps, stone and clay working machines, and textile machines, into uniform (U), moderate (M), and heavy shock (H) loads.

Specifications and Data Tables: The document provides detailed tables of torque and lifetime data for different gearbox models (KRE673 and KR773) at various output speeds (rpm). The tables list the torque values (in kN) corresponding to different lifetimes (in hours) and speeds.

Equivalent Power Rating Calculation: This section explains how to calculate the equivalent power for gearboxes operating at constant speed but variable torques. The equivalent torque is determined by sorting variable torques from maximum to minimum over a time cycle. If the lowest torque is less than 50% of the equivalent torque, it is excluded from calculations. The equivalent power is then calculated using the formula: P_eq = (T_e * n) / 9550.

Example of Equivalent Power Calculation: An example is provided for a reversing blooming mill with specific torque steps and cycle times. The calculation involves determining the equivalent torque and power, which are then used for gearbox selection.

Gearbox Selection Procedure: The document outlines steps for selecting the appropriate gearbox:

Determine the service factor (fs) based on operating conditions.
Calculate the required output torque (M2) and speed for the driven machine.
Calculate the required power at the gearbox output.
Determine the radial load at the output shaft based on the connection type.

Performance tables are used to select a gearbox that meets the requirements, ensuring the service factor and permissible radial load are adequate. An example is provided for a belt conveyor application, detailing the selection process based on calculated torque, speed, and service factor.

General Information: The document provides technical details about AC motors, specifically three-phase squirrel cage motors, known for their simple construction, reliability, and cost-effectiveness. The operating behavior is described by the torque-speed characteristic curve, which is crucial for understanding motor performance.

Specifications: The document outlines the nominal values and permissible deviations for slip, start-up current, start-up torque, moment of inertia, and efficiency for motors up to 37 kW. It also explains the synchronous speed of the stator's magnetic field and the concept of slip, which affects motor speed and performance.

Modes of Operation: Motors are designed for continuous operation (duty S1), with other duty types like short-time duty (S2), periodic duty (S3-S8), and their respective load characteristics detailed in a table.

Protection and Insulation Classes: Standard motors have an IP54 protection class and F insulation class, with options for higher protection and insulation upon request.

Efficiency Classes: Efficiency measurement methods have been updated according to IEC 60034-2-1:2007, with new IE classes applicable to motors from 0.75 to 375 kW. Efficiency classes differ by country, and specific requirements apply to integrated motors.

AC Frequency Inverters: The document explains the function of electronic converters (inverters) that convert DC to AC, detailing the process of using rectifiers and inverter bridges to control motor speed and voltage. Pulse Width Modulation (PWM) is used to generate the desired motor current.

Specifications and Procedures:
1. DC-Link and Inverter System: The system converts AC to DC using a rectifier, storing energy in capacitors to reduce voltage ripple and provide energy during short power interruptions. The DC voltage is then converted back to AC using Pulse Width Modulation (PWM) through Insulated Gate Bipolar Transistors (IGBTs). The output voltage is a series of square wave pulses, which, combined with motor winding inductance, results in a sinusoidal current.

2. DC Motors:
a. General Specifications: DC drive systems have become more feasible with advancements in electronic components, offering features like guided startup, torque and current monitoring, and overload protection.
b. Operating Principles: DC motors require a DC output converter and include various windings. Voltage and current are supplied via carbon brushes and a commutator, necessitating regular maintenance.
c. Types of DC Motors: Two main types based on winding configuration, affecting torque-speed characteristics.
d. Speed Control: Speed is adjusted by altering DC voltage, with speed dropping as load increases. Speed differences can be compensated by adjusting (I x R) in the converter.

3. Electromagnetic Brakes:
a. Brake Types:
- Without Cooling: Mounted on the motor's back cover, suitable for short cycles.
- Fan Cooled: Includes a fan for long operations in enclosed spaces.
- With Hand Release: Manually operable, useful in power failures or mechanical issues.
b. Working Voltages: Available in 230V AC or 400V AC, with DC coil voltage requiring rectifiers or transformers. Standard delivery is 230V with a half-wave rectifier.

Key Parameters and Recommendations:
- Ensure regular maintenance of DC motors due to wear on carbon brushes.
- Choose appropriate brake type based on operational duration and environment.
- For precise speed control in DC motors, consider using a tachogenerator for actual value measurement.
- Consult Brevini Power Transmission S.p.A. for special brake voltage requirements.

Brake Types and Specifications:
1. Brakes without Cooling: Suitable for short operation times, mounted at the end of the motor shaft.
2. Brakes with Cooling: Designed for long operation times and enclosed spaces, featuring a fan for constant ventilation.
3. Brakes with Lever Arm: Can be used with or without cooling, manually operated, ideal for situations with no power supply.

Operating Voltages:
Electromagnetic brakes can be ordered with 230V AC or 400V AC. The brake coils require DC voltage, necessitating rectifiers or transformers.
1. 230V Supply: Voltage is reduced using half-wave or full-wave rectifiers.
2. 400V Supply: Voltage is reduced using half-wave rectifiers.
3. 24V DC Brakes: Voltage is transformed and rectified to DC.

Connection Types:
1. Delayed Braking: Used for slow and sliding brake systems, preventing shock loadings.
2. Immediate/Fast Braking: Used when short braking times are needed, common in lifting operations.

Brake Selection:
To select a brake, consider total inertia, maximum motor speed, maximum braking time, static torque, and safety coefficient. The necessary braking torque is calculated based on load direction and motor rotation.

Thermal Capacity:
After calculations, check the brake's thermal capacity to ensure it is within limits. Adjust the air-gap periodically to maintain performance.

Selection Example:
For a motor speed of 1400 rpm and a required torque of 50 Nm, a 150 Nm brake is suitable, with a thermal capacity of 1302 Joules, below the 18000 Joule limit.

Overview: This document provides detailed dimensional specifications for motors, focusing on the tapped center hole according to DIN 332, sheet 2. It includes measurements for motors with brakes and outlines terminal box positions.

Key Sections:

Specifications: The document lists dimensions for various motor types, including measurements 'k', 'k1', 'n', and 'n1'. The 'k1' dimension is specifically for motors equipped with brakes.
Terminal Box Positions: Positions are specified for different motor sizes (e.g., 71-80-90-100-112-132), with a note that 'x' indicates if the motor is lower than the foot mounting plane.
Dimensional Tables: Multiple tables provide detailed measurements for different motor types and sizes, including 'k', 'k1', 'n', and 'n1' values. These tables are repeated for various motor configurations.

Critical Information:

Brake Motor Dimensions: The 'k1' dimension is crucial for motors with brakes, indicating specific adjustments needed for these configurations.
Mounting Considerations: The 'x' value in tables indicates whether the motor is positioned below the foot mounting plane, which is important for installation and operational considerations.

Conclusion: This document serves as a comprehensive guide for understanding the dimensional requirements and specifications for various motor types, particularly focusing on those with braking systems and their installation requirements.

Overview: This document provides dimensional specifications for motors with tapped center holes according to DIN 332, sheet 2. It includes measurements for various motor types and positions of terminal boxes.

Specifications:

Dimension 'k1': This measurement is specifically for motors equipped with brakes.
Terminal Box Positions: The document outlines the positions of terminal boxes for different motor sizes, indicating if the motor is lower than the foot mounting plane.

Dimensional Tables: The document contains several tables listing dimensions for different motor types and sizes. Key dimensions include:

k: General dimension for motor size.
k1: Dimension for motors with brakes.
n and n1: Additional dimensions related to motor size and configuration.

Motor Types and Sizes: The document categorizes motors by types such as 71, 80, 90S, 90L, 100L, etc., and provides specific dimensions for each type.

Key Observations:

All dimensions are provided in millimeters.
There are specific notes on the applicability of certain dimensions, particularly 'k1' for motors with brakes.
The document is structured to provide quick reference for engineers and technicians working with these motor types.

Overview: This document provides detailed dimensional specifications for various motor types, focusing on the tapped center hole according to DIN 332, sheet 2. It includes measurements for motors with brakes, terminal box positions, and other critical dimensions.

Specifications: The document lists dimensions for different motor types, including KR675.08, KR676.08, KR773.00, KR773.01, and others. Key dimensions such as 'k', 'k1', 'n', and 'n1' are provided for each motor type, indicating the size and configuration of the motors.

Procedures: The document outlines the positioning of terminal boxes, which are crucial for the installation and maintenance of motors. Positions are indicated as Poz.1, Poz.2, Poz.3, and Poz.4, with specific angles and dimensions for each motor type.

Standards: The document adheres to DIN 332 standards for tapped center holes, ensuring compatibility and standardization across different motor types and applications.

Recommendations: It is recommended to use the specified dimensions for motors equipped with brakes, as indicated by the 'k1' measurement. This ensures proper fitting and functionality of the motors.

Key Data from Tables: The tables provide a comprehensive list of dimensions for various motor types, including measurements for 'k', 'k1', 'n', and 'n1'. These dimensions are critical for ensuring the correct installation and operation of the motors.

Critical Information: The document emphasizes the importance of adhering to the specified dimensions and standards to ensure the proper functioning and longevity of the motors. It also highlights the need for precise positioning of terminal boxes to facilitate maintenance and operation.

Dimension Tables:
This document provides detailed dimensional specifications for various motor types, focusing on the dimensions relevant to motors with brakes. The tables include measurements such as 'k', 'k1', 'n/n1', and 'm1' for different motor configurations (e.g., B5, B14).

Key Specifications:

Dimension 'k1': This dimension is specifically for motors equipped with brakes.
Tapped Center Hole: All motors feature a tapped center hole according to DIN 332, sheet 2.

Motor Types and Dimensions:

For motor types 63/B5, 71/B5, 71/B14, 80/B5, and 80/B14, dimensions are provided for 'k', 'k1', 'n/n1', and 'm1'.
Additional motor types such as 90S/B5, 90S/B14, 90L/B5, 90L/B14, 100L/B5, 100L/B14, 112M/B5, 112M/B14, 132S/B5, 132S/B14, 132M/B5, 132M/B14, 160M/B5, 160L/B5, 180M/B5, and 180L/B5 are also detailed with similar dimensional data.

Terminal Box Positions:

Positions for terminal boxes are indicated as Poz.1, Poz.2, Poz.3, and Poz.4 for various motor sizes.

Additional Notes:

For motors lower than the foot mounting plane, a specific dimension 'x' is noted.
Standard operations and additional specifications are provided for each motor type.

Dimensional Specifications:
The document provides detailed dimensional specifications for various motor types, including measurements such as 'k', 'k1', 'n/n1', and 'm1'. The 'k1' dimension is specifically for motors equipped with brakes. The document references the DIN 332 standard for tapped center holes.

Terminal Box Positions:
Information on terminal box positions is provided, with positions labeled as Poz.1, Poz.2, Poz.3, and Poz.4 for motor types ranging from 100 to 180.

Performance Tables:
The performance tables for the K Series Gear Units include nominal torques, ratios, output speeds, permissible radial loads (both input and output), and weights. The tables also specify nominal power for a service factor of 1.0.

Key Data from Tables:
- Nominal torques and output speeds are provided for various gear unit types.
- Input speeds are listed in rpm, with corresponding output speeds and permissible radial loads.
- The tables include data for different motor types, such as KT002, KT003, KT102, KT103, KT202, and KT203.

Standards and Recommendations:
The document adheres to DIN 332 standards for certain specifications and provides recommendations for motor dimensions when brakes are involved.

Overview: The document provides performance tables for the K Series Gear Units, detailing specifications such as nominal torques, ratios, output speeds, permissible radial loads, and weights. It is structured to offer comprehensive data for various gear unit types and configurations.

Specifications: The tables list nominal torques (Ma) in Nm, ratios (i), and output speeds (n2) in rpm for different input speeds (n1). The data is organized by gear unit type, with specific values for each configuration.

Procedures: The document outlines the nominal power (Pe) in kW for a service factor (fs) of 1.0, indicating the power capacity of each gear unit under standard conditions.

Standards and Norms: The permissible radial loads are specified for both output (Fqam) and input (Fqem) in Newtons, ensuring the gear units operate within safe mechanical limits.

Recommendations: The tables suggest optimal configurations based on input speed and load requirements, aiding in the selection of appropriate gear units for specific applications.

Key Data Interpretation: The tables provide critical insights into the performance capabilities of the gear units, including their efficiency at various speeds and loads. This information is crucial for engineers to design systems that maximize performance while maintaining reliability.

Catalog excerpts

brew ini power iranunittion If SERIES New Edition 2016 brevinigearmotors BREVINI CEARMOTORS Bevel Helical Gearboxes

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Indice Index Inhaltsverzeichnis Info generali General Info. Einfuhrung Motori Motors Motor Significato dei simboli Caratteristiche generali dei riduttori serie K Spiegazioni tecniche Caratteristiche tecniche Accessori Designazione unita Esempi di designazione Combinazioni di rapporti geometricamente possibili, in funzione della grandezza del motore Fattore di servizio Classificazione dei carichi Senso di rotazione Carichi radiali Calcolo dei carichi radiali Carichi assiali ammessi per i tipi di riduttore con estrusore Calcolo della potenza equivalente Esempio di calcolo della potenza equivalente Scelta...

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Indice Index Inhaltsverzeichnis Motori Motors Motor Freni Brakes Bremsen f- Convertitori di frequenza in CA Motori CC a- Caratteristiche generali dei motori CC b- Principi di funzionamento dei motori CC c- Tipi di motori CC d- Controllo della velocita di rotazione dei motori CC Freni elettromagnetici Tipi di freni Tipi di connessione Scelta dei freni Capacita termica dei freni f- AC Frequency Inverters DC Motors a- DC Motors general specifications b- DC Motors operating principles c- Types of DC Motors d- DC motors Speed Control Electromagnetic Brakes Brake Types Connection Types Brake Selection Brake...

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Informazioni generali General Information Einfuhrung qa alberi in entrata [N] F : Carichi radiali sull'albero in ext lato di uscita, ridotto a livello dell'albero motore [kgm2] macchina azionata dal riduttore (per potenze diverse fare riferimento alla potenza equivalente) [kW] input shafts [N] Fq ; Radial loads on output shaft J ; Total outside moment of ext inertia reduced to the motor shaft [kgm2] rotierende Teile von der Aus gangsseite reduziert auf Motor welle [kgm2]

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Informazioni generali General Information Einführung Note / Notes / Notizen

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Informazioni generali General Information Einführung Note / Notes / Notizen

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Informazioni generali General Information Einführung Caratteristiche generali dei riduttori serie K General Specifications of K Series Gearboxes Allgemeine Eigenschaften von K Serie Getrieben I riduttori della serie K sono riduttori ad assi ortogonali monoblocco. Sono progettati per applicazioni che richiedono un più alto rendimento e maggiore resistenza. L'albero in entrata e quello in uscita sono perpendicolari tra loro. K Series gearboxes are helical-bevel geared monoblock housing gearboxes. K Series are designed for higher efficiency and higher strength required operations. Input and output...

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Informazioni generali General Information Einführung Spiegazioni tecniche Technical Explanations Technische Erläuterungen - Coppia trasmessa (M2): [Nm] Moltiplicando la coppia in uscita dal motore per il rapporto di trasmissione e il rendimento si ottiene la coppia trasmessa a livello dell'albero in uscita dal riduttore. - Output Torque (M2): [Nm] Multiplication of motor output torque by transmission ratio and efficiency gives the output torque result at the output shaft of the gear unit. - Ausgangsmoment (M2): [Nm] Multiplikation von Ausgangsmoment des Motors mit Übersetzung und Division das...

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Informazioni generali General Information Einfuhrung - Lubrificazione: I riduttori della serie K utilizzano i tipi di olio riportati nelle tabelle di lubrificazione. Per maggiori informazioni sulla lubrificazione, fare riferimento alla sezione dedicata. - Lubrication: K series gearboxes are filled with oils indicated on the lubrication tables. For lubrication details please refer to the lubrication section. - Schmierung: K Serie Getriebe werden mit Olen entsprechend der Schmierungstabellen, falls nicht anders ver-einbart, geliefert. Fur weitere Schmierungsan-gaben siehe Kapitel Schmierung. -...

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Informazioni generali General Information Einführung

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Informazioni generali General Information Einführung Designazione unità / Unit Designation / Typenbezeichnung K R 3 7 3 . 02 R - M2 T1 - 3 E90S / 4C - L05 Freno / Brake / Bremse L-220 V Con ventola / With Fan / Mit Lüfter P-24 V Con ventola / With Fan / Mit Lüfter S-220 V Senza ventola / Without Fan / Ohne Lüfter Z-24 V Senza ventola / Without Fan / Ohne Lüfter Numero di poli / Number of poles / Anzahl der Polen Grandezza motore / Motor Size / Motorbaugröße Per tipi KV / For KV types / Für typen KV E90 S / 4 Numero di poli / Pole Number / Anzahl der polen Lunghezza corpo / Frame Length / Gehäuselänge...

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Informazioni generali General Information EinfuhrungDesignazione unita / Unit Designation /Typenbezeichnung KR..00..

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Informazioni generali General Information Einführung Designazione unità / Unit Designation / Typenbezeichnungen KR..00

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Informazioni generali General Information Einfuhrung KR..0SR Esempi di designazioneKR273.00-3E90S/4-L05TypenbezeichnungsbeispieleKR273.00-3E90S/4-L05 K : Riduttore serie K 00 : Albero cavo all’uscita T : Albero pieno all’entrata 01 : Albero pieno all’uscita L : Albero cavo in uscita a sinistra R : Albero cavo in uscita a destra

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Informazioni generali General Information Einfuhrung Combinazioni di rapporti geometricamente possibili, in funzione della grandezza del motore Geometrically Possible Ratios Combinations According to Motor Size Geometrisch mogliche Kombinationen von Ubersetzungen nach MotorbaugroUe

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Informazioni generali General Information Einfuhrung Fattore di servizio Il fattore di servizio (fs) e un coefficiente di sicurezza che tiene conto delle diverse condizioni di lavoro della macchina azionata dal riduttore. In presenza di carichi uniformi per 8 ore di funzionamento al giorno e fino a 100 avviamenti all'ora si utilizza il fattore "fs=1". Il fattore di servizio dipende da: - Tempo di funzionamento - Natura del carico - Frequenza di avviamento - Tipo di azionamento - Altre considerazioni Per stabilire quale sia il giusto fattore di servizio per la propria macchina: 2. Selezionare...

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