TECHNICAL HANDBOOK

INDEX Introduction to open-ended belts Technical calculation Linear motion Conveyor belt Calculation parameters Belt installation Fixing plates Positioning and transmission precision Cover properties Special execution feasibility Special execution photos Data sheet MEGALINEAR megadynegroup.com

INTRODUCTION TO OPEN-ENDED BELTS Megadyne started manufacturing moulded transmission belts in 1957 and extruding open-ended belts in 1975. MEGALINEAR open-length belts are manufactured in thermoplastic polyurethane, which gives superior wear and abrasion resistance. Various types of steel cords, offer good running characteristics, even under high tractive loads. Advanced production processes allow the ability to engineer bespoke technical design solutions to meet market demands. By selecting from a range of components and materials, MEGALINEAR belts can be manufactured to perform in even the...

INTRODUCTION TO OPEN-ENDED BELTS MEGALINEAR Adaptable Cleats For Transport - is the most versatile belt ever! Its design with quick and easy interchangeable profiles means you can use the same belt for a wide variety of applications, transporting goods of different shapes on a single transport system with a minimum of downtime! Thanks to their features, MEGALINEAR belts can be successfully used in a wide range of applications such as: • • • • • • • • • • • • • • • • Automatic sliding doors and garage opening system Elevators Automated handling devices Linear drivers Positioning system Wood industry...

CLASSIFICATIONS CLASSIFICATIONS MEGALINEAR timing belts are manufactured in thermoplastic polyurethane, with single parallel steel cords. These types of belt, developed by our Research & Development, offers good running characteristics and high traction loads. They are especially suited for power transmission and conveying with high loads and speeds. The addition of a nylon coating on the teeth during production enhances the running properties for specific applications and reduces the noise thanks to a lower frictional coefficient. An extra thickness of special coating is also possible on the...

CLASSIFICATIONS MECHANICAL AND CHEMICAL CHARACTERISTICS BODY MEGALINEAR belts are manufactured with white thermoplastic polyurethane 92 ShA as standard. Special compounds (different hardness, special properties) are available on request. Special compounds and cords must be tested and homologated on the application. Megadyne is not responsible for the wrong functioning of special products. Here under some PU characteristics: WATER No problem in normal or sea clean water at room temperature. Over 60 ºC, there is a fast decrement of breaking strength. ACIDS In acid-diluted proportions at room temperature,...

CLASSIFICATIONS MECHANICAL AND CHEMICAL CHARACTERISTICS MICROORGANISMS In the presence of grime, containing humidity, Microorganisms can develop. In the case a Microbic attack can produce danger, you have to use a special kind of PU. WEATHER AGENTS Good resistance to atmospheric agents. White colour can change to light yellow under long UV exposure. In any case, this has no influence on mechanical resistance. CORDS STANDARD CORD MEGALINEAR is manufactured with S and Z parallel zinked steel cords as standard. KEVLAR ® • Kevlar ® tension cords are suggested for: • Non-magnetic, for use in drives...

CLASSIFICATIONS COATING MEGALINEAR can be manufactured with special coating on the teeth or on the back. Please check on page 134 and 135. IDENTIFICATION CODE Using the information in the table below, it is possible to identify the correct belt for every application. The code is composed of letters and numbers as the following example: 1 SPECIAL MANUFACTURES Joined belt. MEGALINEAR open-ended belt. This number indicates the width of the requested belt. The value is in mm for a belt with a pitch in mm, and in inches for a belt with a pitch in inches. This code composed of letters indicates the...

LINEAR MOTION BELT TECHNICAL CALCULATION OMEGA LINEAR MOTION BELT LINEAR MOTION BELT CONvEyOR BELT OMEGA LINEAR MOTION BELT LINEAR MOTION AND CONVEYOR BELT z1 n OMEGA LINEAR MOTION BELT c The following pages contain data, formulae and tables that are required to design a new belt drive. Q For critical and difficult drives, it is recommended that you contact your supplier’s Technical Staff for advice. Symbol Unit Definition a Symbol Unit Definition Mt n1 V m m/s T h e f o l l o w i n g p a g e s c o n t a i n d a t a ,a Ff o r m u lm/s a s2 a nacceleration d t a b l e s t h a t a re re q u gi...

TECHNICAL CALCULATION CHOICE OF BELT PITCH AND SPROCKETS For optimum belt pitch see tables on page 12. For optimum choice of sprocket size, it is desirable to have as near to 12 teeth in the mesh as possible. For horizontal & conveying drives Knowing mass (Note: values of μ can be found in table 3 on page 13) Knowing drive torque Knowing drive power BELT WIDTH AND PROFILE ESTIMATION The belt width b should be calculated using the following formula: Cs safety factor from page 11 table 4 from above calculation number of teeth in mesh on driver sprocket [0.5 - (if calculated Zm > = 12 for an OPEN-ENDED...

LINEAR MOTION CALCULATION EXAMPLE (OPEN-ENDED BELT) CHOICE OF THE BELT PITCH AND SPROCKETS According to the belt pitch selection table n.1 on page 12, considering the values of P and n1, we select RPP8 belt. Then, we consider the pulley’s diameter nearest to the requested value and the corresponding n. of teeth (see technical information on page 79). Therefore Z1 = 30 teeth (with a pitch diameter of 76,4 mm). MPLE (OPEN-END BELT) CALCULATION OF THE EFFECTIVE TENSION Since the drive power is known, F u can be calculated: d1 DETERMINATION OF THE BELT WIDTH g the values MACHINE of P and n1,DATA...

CONVEYOR BELT CALCULATION EXAMPLE (JOINED BELT) CHOICE OF BELT PITCH AND SPROCKETS ATION EXAMPLE (JOINED BELT) According to the belt selection table n. 2 on page 12, considering the values of F u (for joined belts enter double of calculated Fu in table 2), we select T 10. Then, we consider the pulley’s diameter nearest to the requested value and the corresponding n. of teeth (see technical information on page 41). Therefore, Z 1 = 32 teeth (with a pitch diameter of 101,86 mm). CALCULATION OF THE EFFECTIVE TENSION Since the mass is known, F u can be calculated: Fu = (m • a) + (m • g • µ) | value...