HC Series

HC Series
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HC Series

Product catalog summary
Introduction and General Information
The HC series motors are radial piston hydraulic motors designed for low speed and high torque applications. They feature a rotating shaft and stationary housing, ensuring high starting torque and mechanical efficiency with minimal maintenance. Suitable for marine equipment, winches, and agricultural machinery.
Product Features
Key features include high volumetric and mechanical efficiencies, smooth low-speed operation, high starting torque, and cavitation resistance. The motors are bi-directional, compact, and support high radial and axial forces, with optional speed sensors and built-in valves.
Technical Data
Specifications for different motor sizes include displacement, theoretical torque, maximum continuous pressure, speed, and power. Adhering to specified parameters is crucial for optimal performance and longevity.
Hydraulic Fluid Recommendations
Use hydraulic oils with a minimum viscosity index of 95 and anti-wear additives. Guidelines for selecting optimal viscosity based on room temperature are provided, emphasizing the importance of maintaining proper fluid conditions.
Drain Recommendations
Proper motor filling with hydraulic fluid before start-up is crucial. Piping arrangements should prevent air bubbles, and leakage line pressure should not exceed 10 bar.
Maintenance and Troubleshooting
Regular maintenance is minimal, with a troubleshooting section for potential issues. Guidelines for motor installation, start-up, handling, and storage are provided to maximize motor life and performance.
Flushing Specifications
Flushing involves the inlet and outlet ports, with the outlet port positioned high. Maximum continuous case pressure is 10 bar, with a peak of 15 bar. Special seals for higher pressures are available. Flushing flow rates vary by motor type, and drain oil viscosity should be at least 20 cSt.
Shaft Seal Features
The standard shaft seal is of type BABSL, made from SIMRIT® materials, suitable for temperatures from -40°C to +160°C, designed for mineral and synthetic oils.
Installation and Start-Up Procedures
Motors must be handled with care using appropriate tools. Check for damage before installation. Use correct screw sizes and ensure a stable, vibration-free supporting structure. Fill the motor with oil before starting, and avoid high-speed operations during cold start-up.
Handling and Storage
Motors should be packed and stored properly to prevent damage. Avoid impacts on the motor shaft during handling. Store motors in stable conditions, ensuring they are not supported by the shaft.
Formulas and Conversions
Formulas for calculating torque, power, speed, displacement, and flow are provided, along with conversion tables for various units.
Storage and Protection
Motors can be stored safely for 4-6 months without performance loss if stored at temperatures between -15°C and +55°C. For storage beyond 6 months, fill the motor case with hydraulic oil and seal it.
Maintenance Operations
Maintenance should be performed by trained personnel when the motor is stopped and depressurized. Minimal maintenance is required if used according to specifications.
Material Specifications
Key motor components are made from steel, cast iron, bronze, PTFE, and elastomer, ensuring durability and performance.
Bearings and Lifetime
Bearing life is influenced by speed, pressure, and fluid viscosity. Theoretical lifetime (L10) and average lifetime (L50) are provided, with L50 being five times L10.
Motor Creep Speed
Creep speed is inherent in hydraulic motors and depends on various factors. Negative brakes can control excessive creep speed.
Special Features
Options like marine painting, speedy-sleeve, high-pressure shaft seals, and counterclockwise rotation are available for specific applications.
Cavitation and Freewheeling
Cavitation should be minimized through proper circuit design. HC series motors handle cavitation efficiently. Freewheeling circuits are described for low and high-speed operations.
Troubleshooting
Common issues such as excessive noise, overheating, and insufficient torque are addressed with potential causes and solutions.
Technical Data
Detailed specifications for the HC05 series, including displacement, torque, pressure, speed, and power ratings, are provided for various models.
Performance Diagrams
Performance diagrams for hydraulic motors with displacements ranging from 200 cc to 650 cc are provided. Continuous operation is possible, but intermittent operation is limited to 15% of the duty cycle for a maximum of 3 minutes.
Bearing Life
Examples illustrate bearing life under different conditions. For instance, at 120 bar and 300 rpm, the average lifetime is 50,000 hours.
Technical Data
The HC2 series motors have specific torque values ranging from 3.06 to 9.92 Nm/bar, with a maximum continuous pressure of 250 bar and a hydrostatic test pressure of 420 bar.
Ordering Code
The document includes an ordering code section detailing various components such as distributors, tachometers, shafts, and special features.
Installation Drawings
Installation drawings for different models within the HC2 series are provided, detailing dimensions and port specifications.
Overview
This document is a technical catalogue from Italgroup S.r.l. detailing the specifications, performance, and ordering information for the HC3 series hydraulic motors.
Specifications
Detailed specifications for various models of the HC3 series, including displacement, specific torque, maximum continuous pressure, and temperature range, are provided.
Performance Diagrams
Performance diagrams for different displacements (350 cc to 1000 cc) illustrate continuous, intermittent, and peak operation conditions.
Lifetime Examples
Examples of bearing lifetime calculations under different conditions are included.
Ordering Code
The ordering code section provides a detailed breakdown of the components and options available for the HC3 series.
Important Notes
Italgroup S.r.l. reserves the right to modify specifications without notice. Adhering to hydraulic fluid recommendations and operational limits is emphasized for optimal performance and longevity.
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Catalog excerpts

HC Series-1

Single displacement hydraulic motors – High Cavitaton

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HC Series-2

All partial or total reproduction and copy without written authorization of Italgroup S.r.l. is strictly forbidden. ©2016 ITALGROUP S.R.L. - ALL RIGHTS RESERVED - COMPANY WITH QUALITY SYSTEM

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HC Series-3

ITALGROUP MOTORS HC SERIES TECHNICAL CATALOGUE GENERAL INDEX INTRODUCTION - GENERAL INFORMATION HC - ORDERING CODE TECHNICAL DATA - STANDARD & HSM VERSION HYDRAULIC FLUID RECOMMENDATIONS DRAIN RECOMMENDATIONS FLUSHING STANDARD SHAFT SEAL FEATURES FORMULAS CONVERSIONS MOTOR INSTALLATION AND START-UP MOTOR HANDLING AND STORAGE MAINTENANCE OPERATION INSTRUCTION AND ADVICES SPECIAL FEATURES CAVITATION AND FREEWHEELING TROUBLESHOOTING HC05 HC1 HC2 HC3 The data specified into the catalogue are for product description purpose only and must not be interpreted as warranted characteristics in legal sense....

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HC Series-4

ITALGROUP MOTORS HC SERIES TECHNICAL CATALOGUE GENERAL INDEX HC5 MOTOR DISTRIBUTORS TACHOMETERS SPLINED BILLETS ADAPTOR FLANGES - SPLINED BARS VALVES CONTACT US - REACH US The data specified into the catalogue are for product description purpose only and must not be interpreted as warranted characteristics in legal sense. Italgroup S.r.l. reserves the right to implement modifications without notice. All partial or total reproduction and copy without written authorization of Italgroup S.r.l. is strictly forbidden.

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HC Series-5

INTRODUCTION - GENERAL INFORMATION Carefully read the use and maintenance manual before start-up the motor. The use and maintenance manual must be placed near to motor installation location in order to guarantee operators easy access to the instruction manual. For further information please contact Italgroup. Motor description HC series motors are radial piston hydraulic motors (generally indicated as LSHT motors, low speed high torque motors) with a rotating shaft (1) and a stationary housing (2). The pistons (3) are located radially and the working fluid provide the mechanical force that push...

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HC Series-6

H YDRA ULtC HO TOPS INTRODUCTION - GENERAL INFORMATION Hydraulic motors of the HC series are single displacement crankshaft radial piston motors. Thanks to great variety of accessories HC series can be used in a wide range of applications • Marine equipments • Offshore equipments • Injection moulding machines • Steel bending machines • Fork lifts trucks • Skid steer loaders • Agricultural and forestry machines • Municipal vehicles • Airport machinery ^ High volumetric and mechanical efficiencies ^ Very smooth running at low speeds •( High starting torque / constant torque •{ High freewheeling...

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HC Series-7

H YDRA ULtC US TOPS SERIE DISPLACEMENT internal code (*) Tachometer predisposition The data specified into the catalogue are for product description purpose only and must not be interpreted as warranted characteristics in legal sense. Italgroup S.r.l. reserves the right to implement modifications without notice. All partial or total reproduction and copy without written authorization of Italgroup S.r.l. is strictly forbidden.

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HC Series-8

HC - MOTOR TECHNICAL DATA Theoretical torque Peak speed (**) Peak power For all motors: - Hydrostatic test pressure: see motor datasheets; - Refer to motor performance diagrams for more information - (*) For motor operation with a continuous duty cycle at maximum continuous power the flushing is usually required. For more information please contact our technical department. - (**) Do not exceed peak power. The data specified into the catalogue are for product description purpose only and must not be interpreted as warranted characteristics in legal sense. Italgroup S.r.l. reserves the right to...

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HC Series-9

HC - MOTOR TECHNICAL DATA Motor Theoretical torque Peak speed (**) Peak power For superior performances please refer to HCD series catalogue. For all motors: - Hydrostatic test pressure: see motor datasheets; - Refer to motor performance diagrams for more information - (*) For motor operation with a continuous duty cycle at maximum continuous power the flushing is usually required. For more information please contact our technical department. - (**) Do not exceed peak power. The data specified into the catalogue are for product description purpose only and must not be interpreted as warranted...

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HC Series-10

HYDRAULIC FLUID RECOMMENDATIONS Fluid selection In general, we recommend the use of hydraulic oils with minimum viscosity index of 95, with anti-wear additives (ISO HM and HV). Once normal working temperature is reached, the drain oil viscosity must be at least 20 cSt, preferably in the range from 30 to 50 cSt. HE oils (ecological fluids) are allowed, but must be used with particular attention, because them can influence the motor seals compatibility, and can reduce motor performances and life. Please contact us in case of HE oils usage. Optimal viscosity selection Referring the first approximated...

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HC Series-11

HYDRAULIC FLUID RECOMMENDATIONS Hydraulic systems oil must always be filtered. The choice of filtration grade derives from needs of service life and money spent. In order to obtain stated service life it is important to follow our recommendations concerning filtration grade. When choosing the filter it is important to consider the amount of dirt particles that filter can absorb and still operate satisfactorily. For that reason we recommend filters showing when you need to substitute filtering cartridge. · 25 μm filtration required in most applications · 10 μm filtration in closed circuit applications...

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HC Series-12

H YDRA ULtC HO TOPS DRAIN RECOMMENDATIONS Motor axis horizontal Leakage line Check valve Leakage line Motor axis vertical, shaft down Leakage line Leakage line Check valve Motor axis vertical, shaft up Leakage line Leakage line Leakage line Check valve Check valve Leakage line connection Always fill the motor with hydraulic fluid before start-up. Arrange piping in a way that the motor cannot drain off and cannot generates air bubbles into the motor case. Under certain conditions may be is necessary to arrange a check valve in order to help avoiding the motor drain off. Always check carefully...

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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.