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Wall Cream

Wall Cream

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Wall Cream

Product catalog summary

Drive Calculation Guidelines

Pulleys: Use maximum diameter pulleys to enhance teeth engagement and belt speed. Zero backlash pulleys are recommended for precision. Ensure high-quality pulleys.
Minimum Pulley Diameter: Depends on belt construction, load, and drive configuration. Consult ELATECH® for smaller pulleys.
Clamping Plates: Must match belt profile, be rigid, and provide uniform force. Minimum 7 teeth in clamp; 12 for HPL cords.
Machine Structure: Ensure rigidity for reliable drive and repeatability.
Angular Drives: For "Twisted" drives, maintain span length > 20 times belt width for 90° twist.
Omega Drive: Maintain span length > 3 times belt width between driver pulleys and idlers.
Belt Life: Follow technical specifications for pulley geometry and belt storage to achieve 3 million reverse bending cycles over 10 years.

Belt Installation

Drive Installation: Ensure belt teeth and pulley grooves match before tensioning.
Breaking Load: Dependent on alignment and clamping. Use safety factors and consult ELATECH® for guaranteed loads.
Belt Drive Tension: Correct tension and alignment optimize belt life and reduce noise.
Drive Alignment: Misalignment causes unequal tension and noise. Use straight edge or laser tool for alignment.
Idlers: Use toothed idlers on slack side. Avoid flat idlers to prevent noise and wear.

Belt Handling and Storage

Store belts in protective containers, away from sunlight, chemicals, and ozone sources. Handle with care to avoid damage.

ELADRIVE Software

Online tool for efficient drive calculation, always up-to-date, covering power transmission, linear, and transport applications.

Calculation Definitions and Formulas

Includes definitions for terms like torque, angular velocity, and safety factors. Provides formulas for calculating forces, tension, and elongation.

Linear Drive Calculation

Ensure total peripheral force satisfies tooth shear strength, tensile load, and flexibility. Consider mass, transmission cycle, and friction forces.
Use large diameter pulleys to optimize performance. Calculate total mass and necessary forces.
Verify belt width, installation pretension, allowable tensile load, and flexibility.
Calculate shaft load and static elongation for linear and "Omega" drives.
Determine positioning accuracy based on stiffness coefficient.

Overview: This document provides detailed technical specifications and procedures for the installation and calculation of power transmission drives using ELATECH® timing belts. It includes methods for drive pre-tensioning, calculation formulas, and guidelines for selecting the appropriate belt and pulley dimensions.

Positioning Accuracy: The accuracy of positioning is influenced by backlash between the belt and pulley. Using zero backlash pulleys can help reduce errors.

Installation and Drive Pre-tensioning: Three methods are suggested for pretensioning a drive: measuring elongation, using span deflection, and measuring frequency. The most accurate method is measuring frequency using a belt tension meter.

Drive Calculation: Key parameters for drive calculation include power to be transmitted, driver rpm, motor starting torque, required center distance, and maximum driver pulley diameter. The document provides formulas for calculating drive ratio, belt length, torque, and safety factors.

Belt Selection: Belt selection is based on constant working load, with safety factors considered for peak loads and vibrations. The document outlines the calculation of teeth in mesh and determination of belt width.

Installation Pretension: Correct tensioning ensures the belt slack side is tensioned under all conditions. The document provides guidelines for tension based on the number of teeth and shafts in the drive.

Tables and Graphs: The document includes tables with dimensions for timing pulleys, providing measurements for various numbers of teeth (z) and corresponding diameters (da and dw).

Overview: This document provides detailed specifications for timing pulleys, including measurements for different models such as AT5, AT10, ATF10, SAT10, AT20, ATF20, ATL5, ATL10, and ATL20. The data includes the number of teeth (z), the outer diameter (da), and the pitch diameter (dw) for each pulley type.

Specifications:

AT5 Timing Pulleys: The document lists measurements for z ranging from 87 to 120, with corresponding da and dw values.
AT10 Timing Pulleys: Measurements are provided for z ranging from 15 to 120, with detailed da and dw values.
ATF10 Timing Pulleys: Similar to AT10, with measurements for z ranging from 15 to 120.
SAT10 Timing Pulleys: Includes data for z ranging from 18 to 120.
AT20 Timing Pulleys: Specifications for z ranging from 18 to 120 are included.
ATF20 Timing Pulleys: Data is provided for z ranging from 18 to 120.
ATL5 Timing Pulleys: Measurements for z ranging from 25 to 120 are detailed.
ATL10 Timing Pulleys: Includes specifications for z ranging from 25 to 120.
ATL20 Timing Pulleys: Data for z ranging from 12 to 29 is provided.

Key Data Points:

The document provides a comprehensive list of diameters for each pulley type, which are critical for selecting the appropriate pulley for specific applications.
The measurements are given in millimeters, ensuring precision in design and application.

Conclusion: This document serves as a technical reference for engineers and designers working with timing pulleys, providing essential measurements needed for accurate pulley selection and application in mechanical systems.

Overview: The document provides detailed specifications for timing pulleys, including measurements for different pulley profiles such as HTD14M, RPD5M, RPD8M, and STD5M. The data is organized in tables showing the number of teeth (z), outer diameter (da), and pitch diameter (dw) for each pulley type.

Specifications: Each pulley type is listed with its corresponding measurements:

HTD14M: Covers a range of teeth from 34 to 120, with da and dw measurements increasing incrementally.
RPD5M: Includes teeth from 18 to 120, with specific da and dw values provided for each tooth count.
RPD8M: Similar structure to RPD5M, with measurements for teeth ranging from 32 to 120.
STD5M: Lists teeth from 18 to 120, with detailed da and dw values.
STD8M: Provides measurements for teeth from 32 to 120.

Procedures and Recommendations: The document notes that special pulley profiles may be required for certain applications, advising contact with Elatech® technical department for further details.

Key Data Insights: The tables illustrate the gradual increase in both outer and pitch diameters as the number of teeth increases, which is critical for selecting the appropriate pulley for specific mechanical requirements.

Overview: The document provides detailed specifications and troubleshooting guidelines for timing pulleys, specifically focusing on various models such as ATK10P K13 SOLID, H K13, T10 TOTAL PROTECTION, and others. It includes measurements for different pulley sizes and offers solutions for common issues encountered during operation.

Specifications: The document lists the diameters (da and dw) for various timing pulley models across different z-values (number of teeth). These measurements are crucial for selecting the appropriate pulley size for specific applications.

Troubleshooting: The document outlines common problems such as belt tooth jumping, abnormal noise levels, belt side abrasion, and belt breakage. For each issue, potential causes are identified, and remedies are suggested. These include adjusting alignment, changing pulley design, increasing belt size, and improving environmental conditions.

Recommendations: The document emphasizes the importance of correct initial tension, proper alignment, and using appropriate materials to prevent pulley and belt damage. It also suggests environmental improvements and design modifications to enhance performance and longevity.

Notes: The document includes a disclaimer stating that the information is for informational purposes only and does not imply any warranty beyond what is provided by the manufacturer. It also mentions that specifications are subject to change without notice.

Trademarks: Several registered trademarks of Elatech S.r.l. are mentioned, including ELATECH®, SYNCRO MAX®, ELA-flex SD®, iSync®, and i-IRON®.

Catalog excerpts

Drive calculation GUIDELINES Pulleys It is recommended to use pulleys with the maximum diameter allowed by the application in order to maximise the number of teeth in mesh and increase the belt peripheral speed. For applications where high positioning precision is required, it might be useful to use zero backlash pulleys. In order to guarantee a reliable drive, it is recommended to use superior quality pulleys. Minimum pulley diameter Minimum pulley diameter depends on belt construction but also on the load and the conﬁguration of the drive. The values reported in the catalogue have been calculated...

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BELT INSTALLATIONDrive installation When installing belts on pulleys, before tensioning the drive, check that the belt teeth and pulley grooves correctly match. Belt breaking load is highly dependent on several factors including pulley alignment, clamping system and others. The data given in the catalogue are average values tested in our laboratory. It is recommended to use adequate safety factors and ask the ELATECH® technical department for minimum guaranteed breaking load in applications where it is needed. Correct belt drive tension and alignment are very important to optimize belt life and...

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online calculation software for quick and reliable drive calculation Elatech online drive calculation support at ↓ ELATECH’s ELADRIVE is a drive calculation program allowing efﬁcient and time saving drive calculation with improved performances. ALWAYS UP TO DATE ELADRIVE online version is always up to date. › RELIABLE SOLUTIONS! FAST AND EASY ELADRIVE offers a step by step drive calculation by an easy to follow menu with improved screen layouts for quicker navigation. › SAVE YOUR TIME! COMPREHENSIVE APPLICATION RANGE Drive Calculation ELADRIVE offers a drive calculation for all application technology...

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LINEAR drives calculation Deﬁnitions and transmission cycle In most cases linear drives may be taken back to one of the two layouts shown, where a speciﬁc system of forces acts. “OMEGA” drive v, a FTzul, FTv mc LINEAR drive A Transmission cycle (rpm/time) v ab Drive Calculation

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[cm] Belt minimum width [N/mm] Belt modulus / spring rate [N] Specific spring rate [mm] Effective centre distance [mm] Outside pulley diameter [mm] Pitch circle diameter [mm] Idler pulley diameter [N] Dynamic shaft load [N] Static shaft load [N] Maximum span force [N] Resisting force of friction [N/cm] Specific tooth shear strength [N] Pretension force for belt side [N] Allowable tensile load [N] Vertical lifting force [mm] Difference of position due to force [mm] Length of tight and slack side [Nm] Torque during acceleration Specific weight Total mass Mass of carriage / slide Pulley mass Pulley...

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Torque Power M _ Fu 'd w _ P' 9550 2000 n M • n FU • v 9550 _ 1000 Peripheral force Linear speed Fu = 60000•v z • t Acceleration time Acceleration travel tab Braking time Braking travel ‘av _ i _ Total travel Sges _ Sab + Sc + Sav Time at constant speed Travel at constant speedsc = v • tc • 1000 v • 1000 Safety factor ELATECH® belts do not need any safety factor. However if there are unknown peaks or shock loads or swings in the peripheral force unknown at design time, which therefore can not be included in the calculation parameters, a suitable safety factor should be considered by the designer....

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Calculation Linear drives are correctly dimensioned when the total peripheral force, necessary for the requested work, satises the 3 technical parameters of the selected belt: ∙ tooth shear strength ∙ allowable tensile load ∙ exibility Determine the belt width with FUspez depending on the rpm of the small pulley (see technical data on tooth shear strength for the selected belt type). The necessary data for the calculation are: the mass to be moved, the transmission cycle, the drive layout with the related forces, the resisting force of friction. Friction force is generally determined by the linear...

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Calculate shaft load The shaft load under static conditions is: Being FU the resulting force on the slide, the positioning deviation generated by belt elongation is: The shaft load under dynamic conditions is: FWdyn = 2 ⋅ FTV + FU Calculate necessary static elongation Installation tension generates a belt elongation “Δl” between the shafts (for linear drives) or the clamping plates (for “Omega” drives). Linear drive L1 Fu ,M Omega” drive v, a FTzul, FTv mc If the resulting elongation is not acceptable for the application, it is possible to reduce it by increasing the belt width or by increasing...

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Power transmission drives ELA-flex SD® and iSync® Definitions lr [cm] Belt minimum width - Number of teeth of the belt [mm] Effective center distance [mm] Pulley bore diameter [mm] Pulley outside diameter [mm] Small pulley outside diameter [mm] Large pulley outside diameter [mm] Pulley pitch diameter [mm] Small pulley pitch circle diameter [mm] Large pulley pitch circle diameter [N] Static shafts load [N] Pretension force per belt side [N] Allowable tensile load Specific Torque Power Specific Power Acceleration time Deceleration time Peripheral speed Number of teeth of the small pulley Number...

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Belt selection is made according to a constant working load. For start up torque and in case of peak loads and vibrations a safety factor c1 must be considered. Calculate teeth in mesh Transmission with steady load c1 = 1,0 Transmission with peak or fluctuating loads: For speed up driver factor c2 must be considered: i = from 0,66 to 1 c2 = 1,1 The resulting total safety factor is: c0 = c1 • c2 with p [°]= wrap angle t-(z9 - zk ) Determine belt width Note: zemax = 12 for belts ELA-Flex SD® or iSync® zemax = 6 for belts ELATECH® V Drive calculation The necessary data for drive calculation are:...

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NoteSpecial pulley profile required.Contact Elatech® technical dept. for details. 183

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NoteSpecial pulley profile required.Contact Elatech® technical dept. for details. 187

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