Ciclo Engineering Software
V-Belt Software

Ciclo VBelt 3.0

Ciclo VBelt is an advanced engineering tool that allows you create V-belt drive designs in a quick, accurate and reliable manner.

Developed according to technical specifications of the major standards organizations, Ciclo VBelt provides complete solutions and detailed reports for all design requirements.

With a wide range of construction options, Ciclo VBelt generates drive designs that are perfectly compatible with the products of practically every V-belt and sheave manufacturer.

Explore a new dimension in V-belt drive designs

With Ciclo VBelt you can easily find the best V-belt transmission system for your machine. Our software delivers comprehensive solutions, detailed reports, and an innovative Dynamic Picker for real-time adjustments.


Like all applications of our company, Ciclo VBelt has been developed by dedicated professionals that hold in high regard the accuracy of engineering calculations and the reliability of technical analyses implemented in the algorithms of the software.

With the same care and commitment, the software interfaces have been designed for simplicity and ease of use without compromising its unmatched range of features and capabilities.

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V-Belt Standards and Cross Sections

Ciclo VBelt specifically covers the three main technical standards of the world.

These standards gave rise to almost all the other dealing with the matter, while maintaining full compatibility.

ISO - International Organization for Standardization
ISO - International Organization for Standardization ISO 4184 - Classical Cross Sections Y Z A B C D E
ISO 4184 - Narrow Cross Sections (metric) SPZ SPA SPB SPC
ISO 8419 - Narrow Cross Sections (imperial) 9N 15N 25N
9NX 15NX
DIN - Deutsches Institut für Normung
DIN - Deutsches Institut für Normung DIN 2215 - Classical Cross Sections Y Z A B C D E
DIN 7753 - Narrow Cross Sections SPZ SPA SPB SPC
RMA - Rubber Manufacturers Association
RMA - Rubber Manufacturers Association RMA IP-20 - Classical Cross Sections A B C D E
RMA IP-22 - Narrow Cross Sections 3V 5V 8V
RMA IP-23 - Light Duty (FHP) Cross Sections 2L 3L 4L 5L

Dynamic Picker

Dynamic Picker

Ciclo VBelt has an innovative feature that allows you perform four simultaneous tasks in real time:

  1. Select the drive components.
  2. Draw the V-belt drive.
  3. Calculate the operational parameters.
  4. Analyze the drive performance.

The tool responsible for this functionality is called Dynamic Picker.

Dynamic Picker provides a clear view of how sizing process takes place and how each design can be optimized.

It is a unique and sophisticated tool that contributes significantly to Ciclo VBelt is widely recognized as the best CAE software in its class.

With an intuitive interface, Dynamic Picker has four sliders that gradually adjust the size of each component of belt drive system and one more that adjusts the relative position of the sheaves.

At each change of any slider, the software automatically and instantly remakes the four tasks mentioned above.

Further increasing the performance and functionality of Dynamic Picker, each slider can be individually configured through its own drop-down menu.

Database of V-Belts and Sheaves

V-Belt Software Database

Dynamic Picker allows you select V-belts and sheaves from:

  • Standard Sizes
  • Commercial Sizes
  • User-Defined Sizes

Evidently, the Standard Sizes database consists of belts and sheaves whose sizes were fixed by ISO, DIN and RMA.

The Commercial Sizes database was created based on products from leading manufacturers around the world:

  • 7560 V-Belts - Wrapped
  • 3680 V-Belts - Raw Edge and Molded Cog
  • 7370 V-Sheaves - Standard or Deep Groove
  • 330 Flat Pulleys

This database structure ensures that the V-belt drive designs generated by the software program are compatible with products of Commercial Brands, such as:

  • Bando
  • Browning
  • Carlisle
  • ContiTech
  • Dayco
  • Gates
  • Goodyear
  • Jason
  • Maska
  • Megadyne
  • Mitsuboshi
  • Optibelt
  • Roulunds
  • TB Wood's
  • Universal

Design Utilities

Since V-belt drive systems are often used in industrial electric motors, Ciclo VBelt has an extensive database containing data of electric motors from around the world.

The software also has other ancillary databases that complement and increase the level of detail in each design, including a database of standardized machine elements intended to make the connection between shafts and sheaves.

Electric Motor
Electric Motor IEC - International Electrotechnical Commission
  • 2880 Electric Motors
  • 11 Types of Degree of Protection
NEMA - National Electrical Manufacturers Association
  • 3240 Electric Motors
  • 11 Types of Enclosure
Driven Machine
Driven Machine Machines × Type of Load
  • 400 Types of Driven Machine
  • 20 Types of Application
Shaft Connection
Shaft Connection ISO R773 - Parallel Key
  • Ø Shaft from 6 to 500 mm
DIN 6885-1 - Parallel Key
  • Ø Shaft from 6 to 500 mm
ANSI B17.1 - Parallel Key
  • Ø Shaft from 5/16 to 30 in

Project File

Software Toolbars

When you start a new project file or open an existing file, the creation and navigation bars become enabled, allowing you to easily manage your V-belt drive designs:

  1. You can create and edit more than one project at the same time.
  2. Each project can contain several V-belt drives.
  3. In each V-belt drive, you can change any input data at any time.
  4. Each change is immediately analyzed.


V-Belt Drive Reports

For each V-belt drive design, the software automatically generates a complete set of technical reports and CAD drawings that can be customized by user, including personal or corporate logo.

The display and printing of reports and drawings use a WYSIWYG (What You See Is What You Get) interface:

  • Report of Design Data
  • Drawing of the V-Belt Drive
  • Detail Drawing of Sheaves and Shafts
  • Tensioning and Assembly Drawing of the V-Belt Drive

The resolution and the scale of drawings are automatically adjusted according to the paper size selected.

You can choose from a range of standard sizes:

  • ISO paper sizes: A0 - A1 - A2 - A3 - A4
  • ANSI paper sizes: A - B - C - D - E
  • JIS paper sizes: B0 - B1 - B2 - B3 - B4
  • Arch paper sizes: A - B - C - D - E - E1 - E2 - E3
  • USA paper sizes: Letter - Legal - Ledger - Tabloid

GUI - Graphical User Interface

Software Tools

In a highly organized, flexible and friendly environment, Ciclo VBelt is built with a multilingual user interface, an advanced unit converter and a number of other tools that enable it to meet the needs and expectations of the most demanding engineering professionals.

Software Tools

  • Multilanguage Support (English - Portuguese - etc.)
  • Units of Measurement and Significant Digits
  • History Input Data
  • Custom Reports
  • Print Preview
  • Design Wizard
  • Software User Tips & Guidelines

Operating System

Operating System

  • Windows 11
  • Windows 10
  • Windows 8
  • Windows 7
  • Windows Vista
  • Windows XP
Windows 11 Compatible
Windows 10 Compatible
Windows 8 Compatible
Compatible with Windows 7
Compatible with Windows Vista
Designed for Windows XP - Windows Vista Capable








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