FREQUENTLY ASKED QUESTIONS

Beltimport is a supplier of conveyor and drive components in Ukraine that helps enterprises improve the efficiency and reliability of their production facilities and equipment. Beltimport has 30 years of experience in the Ukrainian industrial market and cooperation with leading global manufacturers.

Beltimport is a leading Ukrainian supplier of the following components:

• conveyor belts (PVC, PU, rubber, modular)
• gearmotors, motors, gearboxes
• chains and sprockets
• vacuum load handling systems
• belts and pulleys
• rollers and drums
• belt cleaning and conveyor optimization systems

You can find the full range in the "Products" section.

Beltimport offers only high-quality conveyor belts, gearmotors, chains, and other components from trusted leading manufacturers. Our key suppliers and their products have stood the test of time, and product quality is the key criterion for supplier selection.

Beltimport cooperates with leading global manufacturers, including: Forbo, Bonfiglioli, Tsubaki, Rexnord, Optibelt, Polysur, Dertec, Gummilabor, Flexco, MCV, ZMC, Murtfeldt, Schmalz, and others. More detailed information about manufacturers, their products, and areas of cooperation can be found in the “Brands” section on the company website.

Beltimport works with enterprises in various industries:

• agro-industry (grain, elevators)
• food industry
• mining and metallurgy sector
• building materials production
• woodworking and paper industry
• chemical and pharmaceutical industry
• logistics and warehousing

Yes. Beltimport provides individual selection of conveyor belts, gearmotors, chains, and other drive components according to:

• technical specifications
• operating conditions
• loads
• customer expectations

The company’s specialists provide consultations and technical support at all stages.

Yes. Beltimport conducts audits of conveyor and drive components directly at customer facilities.

During the audit, the following are evaluated:

• current condition of components
• compliance of components with operating conditions
• correctness of installation and maintenance

Based on the results, recommendations for optimization and modernization are provided.

Yes. The company provides comprehensive services for its core products:

• joining of conveyor belts
• hot vulcanization of rubber belts
• diagnostics and repair of gearmotors
• lagging of drive drums
• other services

Yes. Upon agreement, Beltimport provides technical training for:

• engineers
• mechanics
• technical personnel
• procurement departments

Both standard and customized training programs are available according to customer needs.

Yes. Beltimport maintains a warehouse program that allows fast delivery of popular items. Beltimport supplies the following from stock:

• polymer belts
• gearmotors
• modular belts
• drive chains
• elevator buckets
• elevator belts
• conveyor chains
• belts
• other products

If an item is out of stock, prompt delivery from the manufacturer is ensured.

Beltimport is one of the Ukrainian companies holding AEO status, which confirms the company’s reliability in international trade. For customers, this means:

• faster customs clearance
• faster deliveries
• supply stability

Beltimport’s head office and service center are located in Kyiv: 34a, Pyrohivskyi shliakh str.

Representative offices:

• Kharkiv
• Lviv
• Odesa
• Dnipro

Yes. Beltimport has implemented projects for more than 1,000 customers across various industries. Examples of solutions are available on the website or upon request.

Beltimport’s success formula:

• only high-quality products ensuring high reliability
• expertise in product selection, installation, and maintenance for maximum service life
• product availability within required timeframes
• service support
• partnership at all stages of customer interaction

This formula has been working for decades and guarantees the satisfaction of our key partners.

Bonfiglioli is one of the world’s leading manufacturers of gearmotors and drive technology from Italy, with more than 70 years of history. The company has its own production facilities within the European Union and a global presence. Its product range includes a wide variety of gearboxes and gearmotors for industry, mobile machinery, and renewable energy.

A drive chain is an articulated mechanical transmission designed to transfer mechanical power and torque between parallel shafts using sprockets. Drive chains are manufactured from high-strength steel and provide positive, slip-free power transmission, making them ideal for conveyors, lifting mechanisms, and industrial equipment operating under heavy loads.

The main types of drive chains include: roller chains (the most common type, with low friction in the joint), bush chains (used for low-speed drives in heavily contaminated environments), silent chains (for quiet operation at high speeds), and leaf chains (plate-type chains used in lifting equipment). The choice of chain type depends on sprocket speed, lubrication conditions, and the required tensile force.

The pitch of a drive chain (P) is the distance between the centers of two adjacent rollers or pins. The most accurate way to measure the pitch is with a caliper. If the chain is worn, it is recommended to measure the total length of a tensioned section containing 10–20 links and divide the measured value by the number of links to determine for operational elongation caused by wear.

Drive chain model numbering is standardized according to European (ISO/DIN) or American (ANSI) systems. In the ISO standard, the numbers (for example, 12B) indicate the pitch in sixteenths of an inch (12/16" or 19.05 mm), while the letter “B” designates the European profile. An additional suffix after a hyphen (for example, -1, -2) indicates the number of strands — respectively simplex or duplex chain.

A drive chain must be replaced if its operational elongation exceeds 1.5% of its standard length. The allowable elongation percentage decreases as the sprocket size increases. Wear is measured using a special chain elongation scale or a vernier caliper on a slightly tensioned chain to eliminate any slack. Immediate replacement is also required if rollers are damaged, excessive joint play appears, or the sprocket teeth are critically worn.

Drive chains should be lubricated using special adhesive chain lubricants or liquid industrial oils capable of penetrating the joint area between the pin and bushing. Lubricant should be applied to the clearances of the slack side before it engages the sprocket. Thick greases (such as solid grease) are ineffective because they do not penetrate the clearances and tend to attract abrasive dust.

The easiest way to connect a drive chain is by using a special connecting link (master link). The master link consists of a plate with two pins, a connecting link plate, and a locking element (spring clip or retaining ring). During installation, it is important that the open end of the spring clip faces opposite to the direction of chain travel to prevent accidental disengagement during operation.

A roller drive chain elongates not because the metal itself stretches, but due to physical wear between the pin and bushing in the chain joints. Rapid wear and excessive elongation are most often caused by insufficient or incorrect lubrication, the ingress of abrasive dirt and dust into the mechanism, and the use of heavily worn sprockets. The quality and precision of chain manufacturing and assembly are also critically important.

Chain failure most commonly occurs due to static overload, when the applied force exceeds the chain’s minimum tensile strength , or due to metal fatigue caused by repeated heavy shock loads. Failures such as cracked plates and broken pins can also result from seized joints caused by operation without lubrication, improper installation, and sprocket misalignment. It should be noted that Tsubaki drive chains have some of the world’s best MAL (Maximum Allowable Load) ratings, guaranteeing chain fatigue strength for at least 10,000,000 cycles.

A drive chain must be cleaned before applying new lubricant in order to remove the abrasive paste formed by dirt and old grease. The best method is to use special industrial chain cleaners, kerosene, or diesel fuel together with a brush. It is strictly prohibited to clean sealed chains with gasoline, solvents, or aggressive acids, as these substances quickly damage the rubber seals.

To select a drive belt by size, it is necessary to determine the main parameters: profile type (cross-section) and standard, working length, width, or the number of ribs/teeth (for timing, ribbed belts, or kraftbands). The most accurate method is to read the belt designation on the old belt. If the designation is worn off, measure the top width and belt height with a caliper, and measure the length using a flexible tape to determine the outside length or inside length of the old belt.

The main difference lies in the principle of power transmission. A V-belt transmits torque through frictional power transmission between its flanks and the pulley grooves, allowing slight slipping under overload conditions. A timing belt (synchronous belt) operates by means of orm-fit engagement of the teeth, ensuring precise shaft synchronization without slippage losses, which is critical for precision mechanisms.

Drive belts should be stored in a dry room at temperatures between +15°C and +25°C, away from direct sunlight, heat sources, and ozone exposure (for example, from welding equipment). Belts should be stored hanging on large-radius hooks (to avoid permanent deformation and damage to the tension cord) or in their original cardboard packaging without excessive bending.

A polyurethane belt is the better choice when high wear resistance, tensile strength, and resistance to aggressive environments (oils, chemicals, temperature) are required. A rubber belt is preferable when budget is critical or when maximum flexibility and smooth operation are needed, as it is less expensive and absorbs vibrations more effectively.

Depending on the type of drive belt, the theoretical service life ranges from 12,000 to 25,000 operating hours in industrial equipment. The actual operational life of drive belts critically depends on correct static belt tension, pulley alignment, operating temperature, and the presence of oil or abrasive dust on the working surfaces.

Drive belt tension can be checked in three ways: mechanically (using the span deflection method), with a tension gauge, or using a frequency tension tester. The simplest method is to apply a force specified in the belt profile chart to the center of the longest free belt span, measure the deflection, and compare it with the recommended value. For precise adjustment of timing and V-belts, special measuring devices such as Optikrik or Optibelt TT are recommended.

A drive belt most often breaks due to excessive initial tension, a jammed drive, or foreign objects entering the drive area. Rapid wear, tooth shearing, and cord delamination occur because of poor pulley alignment, excessive heat, or the use of a belt that does not match the required torque of the equipment.

Classic V-belts, ribbed belts, and timing belts must not be lubricated with standard grease or WD-40, as this causes slippage and chemical degradation of the rubber.

The most common reason is a mismatch between the motor power and the rated capacity of the drive belt. During motor startup, starting torque can exceed the nominal torque by 2.5–3 times, causing belt overload and rupture.

Aramid, also known as Kevlar, is a woven fabric-type material that has virtually no effective stretch and melts at temperatures around 700°C. Drive belts made from this material are extremely strong but also significantly more expensive.

Aramid is an organic polyamide fibre used as a tension cord material that stands out due to its extremely low-stretch properties. Drive belts with aramid tension cords have a tensile strength twice as high as standard fibres, yet remain remarkably flexible to absorb shock loads.

For transporting oilseeds (including sunflower seeds), it is cost-effective to use rubber elevator belts with the highest oil resistance rating. The oil resistance rating (rubber swelling in the most aggressive reference oil, IRM 903, after 72 hours at 70°C) for these belts does not exceed 5%.

Such belts include Polysur™ Type 276, with an operating temperature range of -25°C to +80°C, and Polysur™ Type 278, with an operating temperature range of -25°C to +120°C.

Polysur™ belts are manufactured by Muller Beltex (the Netherlands), a specialist in high-quality rubber belts for elevators.

There are three main standards for rubber textile conveyor belts:

• GOST 20-85 «Rubber Textile Conveyor Belts» – a Soviet/Russian legacy standard, no longer valid in Ukraine.
• DIN 22102 «Conveyor belts with textile plies for bulk goods» – valid in many European countries.
• ISO 14890 «Conveyor belts — Specification for rubber- or plastics-covered conveyor belts of textile construction for general use» – an international standard.

The standards mentioned above are periodically updated. Relevant editions include the year in which the standard came into force. For example, the current 2026 edition of ISO 14890 is designated as ISO 14890:2026.

As of 2026, the current Ukrainian standard is DSTU EN ISO 14890:2022, which is the national-language translation of ISO 14890:2013.

According to ISO 4195:2014, the heat resistance of a belt defined as the permissible changes in three rubber characteristics (hardness, elongation at break, and tensile strength) after exposure to high temperatures.

Based on resistance to a specified test temperature (over a 7-day period), heat-resistant rubber belts (which may be marked with the letter “T” according to DIN 22102) are classified as follows:

• Class 1 (T1) – resistant to test temperatures up to 100°C
• Class 2 (T2) – resistant to test temperatures up to 125°C
• Class 3 (T3) – resistant to test temperatures up to 150°C

Following the 7-day test, the deterioration of characteristics must remain within the following limits:

• IRHD hardness (International Rubber Hardness Degree) may not increase by more than 20 units or exceed 85.
• IRHD hardness is measured only during this specific test. In rubber belt datasheets, hardness is usually specified in Shore A units. Elongation at break may not decrease by more than 50% or fall below 200%.
• Tensile strength may not decrease by more than 25–40% (depending on the heat-resistance class).

Please note the significant allowable deterioration after only 7 days. Obviously, the actual operating temperature of the belt should be considerably lower than the test temperature, and the test temperatures themselves are somewhat arbitrary.

It is also important to consider the different approaches to heat resistance used in various standards:

• According to ISO 4195, the test temperatures of 100°C, 125°C, and 150°C corresponding to rubber Classes 1, 2, and 3 “...generally do not correspond to the temperatures of the conveyed materials. Usually, the temperature of the conveyed materials is lower, allowing the conveyor belt to cool.”
• According to another standard, GOST 20-85, heat-resistance classes 2T1, 2T2, and 2T3 correspond directly to the temperature of the conveyed materials (100°C, 150°C, and 200°C respectively), while the ambient air temperature must not exceed +60°C.

The MPa value in the characteristics of a rubber conveyor belt indicates the tensile strength of the rubber. Together with two other key properties — abrasion resistance and maximum elongation at break — it determines the specific class of the belt’s rubber covers.

The symbol Y in the marking of a rubber conveyor belt refers to the rubber grade according to the DIN 22102 standard and has the following main characteristics:

• Minimum rubber tensile strength — 20 MPa
• Minimum relative elongation at break — 400%
• Maximum volume loss in abrasion wear testing — 150 mm³

Belts made of Y-grade rubber are abrasion-resistant belts designed for “normal” operating conditions and are suitable for transporting most bulk materials at temperatures approximately from -20°C to +70°C.

There are belts with higher abrasion resistance (rubber grades X and W) and lower abrasion resistance (rubber grade Z), but Y-grade belts are the most widely used.

According to the DIN 22102 standard, the rubber grade symbol Y is indicated after the belt width, carcass type and strength, number of fabric plies, and the thickness of the top and bottom covers. Example: 1000 EP800/4 6+2 Y.

The most common rubber types used in conveyor belt manufacturing are:

• IR (Isoprene Rubber) - A synthetic analogue of natural rubber. It has high elasticity, tensile strength, and does not cause allergic reactions. Its high cost and relatively low abrasion resistance limit widespread use. Typically used for transporting pharmaceuticals and, less frequently, food products.

• SBR (Styrene-Butadiene Rubber) - A general-purpose rubber. Most abrasion-resistant belts are made from SBR rubber.

SBR belts may have different abrasion resistance grades:

• Z — lowest abrasion resistance
• Y — normal abrasion resistance
• X — increased abrasion resistance
• W — highest abrasion resistance

Typical operating temperature range: approximately -20°C to +70°C.

• NBR (Nitrile Rubber). In addition to abrasion resistance, NBR rubber provides high oil resistance and temperature resistance up to 100–120°C. The grade of oil resistance is indicated in belt markings by letters or abbreviations such as: G, MOR, OR, etc. These belts are used for transporting grain and oilseed crops. Certain types of NBR belts are also widely used for transportating food products (for example, sugar).

 • EPDM rubber. In addition to abrasion resistance, EPDM rubber offers excellent resistance to acids, alkalis, weather conditions, and has the highest heat resistance among common rubber types — up to 150°C (short-term exposure up to 180°C or even 250°C). Used for transporting hot materials or where resistance to acids and alkalis is important.

 • CR (Chloroprene Rubber / Neoprene). Neoprene rubber has lower abrasion resistance compared to other rubber types but offers high heat resistance, oil resistance, and resistance to acids and alkalis. Among all rubber types, it is distinguished by its flame resistance and is widely used for mining conveyor belts.

Soybeans and rapeseed are oilseeds, so oil-resistant NBR rubber belts are recommended for their transportation. The higher the belt's oil resistance, the longer its service life. The specialized Polysur Type 276 elevator belt from Muller Beltex (Netherlands) is the best choice, offering the best total cost of ownership (TCO).

The rubber swelling of Polysur Type 276 belt, in the most aggressive reference oil IRM 903 after 72 hours at 70°C does not exceed 5%, while the adhesion between the carcass and covers is at least 6 N/mm, exceeding the requirements of the DIN 22102 standard. This combination of high-performance characteristics ensures a long service life and makes Polysur Type 276 the optimal solution for transporting soybeans and rapeseed at temperatures from -25°C to +100°C. If the soybeans or rapeseed have a temperature between 100°C and 120°C, choose the oil- and heat-resistant Polysur Type 278 belt.

Rubber-fabric belts reinforced with BKNL-65-2 fabric plies comply with GOST 20-2018. According to this standard, such belts belong to the lightweight class (2L, 2LM, 2LP) and are used for transporting low-abrasion materials, including agricultural products, non-abrasive, fine, bulk, and packaged materials.

The thickness of the rubber covers: Top cover: 1 to 4 mm. Bottom cover: 0 to 2 mm. The BKNL-65-2 fabric consists of: Polyester longitudinal threads (warp) and Cotton transverse threads (weft). The tensile strength of BKNL-65-2 fabric (warp direction) is 65 N/mm. A rubber-fabric belt usually consists of several reinforcing fabric plies, as well as top and bottom rubber covers. To determine the belt tensile strength, multiply the strength of the reinforcing fabric by the number of fabric plies indicated before the letters “BKNL” in the belt marking.

For example: The strength of belt 2L-800-5-BKNL-65-2-4-2-I GOST 20-2018 is at least: 5 × 65 = 325 N/mm

In this example, the strength contribution of the rubber covers is neglected (typically an additional 2–7% of carcass strength). Belts with BKNL-65-2 reinforcing fabric complying with GOST 20-2018 are mainly used only in Russia and some post-Soviet countries. In the rest of the world, cotton has long ceased to be used in conveyor belt carcass fabrics. Modern lightweight belts are manufactured using EP fabrics (polyester warp and nylon weft) according to ISO 14890 or DIN 22102.

Polysur® specialized elevator belts are designed specifically for the requirements of vertical conveying. They are manufactured by Muller Beltex (Netherlands) and are considered among the best in the world. Polysur® belts differ from other brands/manufacturers due to their combination of advantages:

• Exceptionally high oil resistance
• All Polysur® belts are antistatic
• Contain 33% more fabric in the weft, increasing transverse belt strength by 40%, ensuring better buckets fixation and longer belt life
• Feature exceptionally high adhesion between rubber covers and the carcass, as well as between carcass plies. The adhesion value significantly exceeds the DIN 22102 requirements and is at least 6 N/mm.

Conveyor roller seizures are almost always caused by bearing seizure (possibly more than one bearing) due to the end of their service life. Bearing service life, in turn, depends on the load and operating conditions.

Load refers not only to the magnitude of the static and dynamic loads acting on the bearing, but also to the nature of the dynamic load, which, among other factors, is affected by the accuracy of the bearing seats (alignment with the roller housing and alignment with the second bearing).

Operating conditions include the temperature range, the amount of contaminants entering the bearing, and the presence and quality of lubricant.

A seized roller increases the energy consumption required to move the conveyor belt. Furthermore, if the housing of a seized roller is made of metal, the belt will wear quickly, and the sharp edges of the housing can damage the belt.

Therefore, conveyor rollers require regular inspection, and if a seized roller is detected, it must be replaced immediately. For this reason, spare rollers must always be available in stock.

When selecting buckets for a bucket elevator, the following parameters should be considered:

A. Geometrical dimensions:

• Width
• Projection (offset from the belt)
• Height along the back wall (depth)
• Front edge height

B. Temperature of the conveyed material:

• Above 135°C – only metal buckets are suitable
• Above 70°C – nylon and metal buckets are suitable
• From -40°C to 70°C – polyethylene, polyurethane, nylon, and metal buckets are suitable

C. Abrasiveness of the conveyed material:

• For grain crops and food products, polyethylene buckets are most commonly used
• For soybeans, feed, fertilizers, sand, salt, dry mixes, pellets, cullet, and crushed stone, nylon, polyurethane, or metal buckets are most commonly used
• For food products and chemically aggressive substances, including hot materials, stainless steel buckets are used
• For products prone to sticking, polyurethane buckets are used
• For cement, sand, crushed stone, gravel, coal, fertilizers, salt, limestone, clay, and concrete, welded steel or cast-iron buckets are used

D. Food compatibility requirements

For transporting products intended for direct human consumption, stainless steel buckets or plastic buckets compliant with FDA food-contact requirements are used.

Polymer buckets have the following advantages over steel buckets:

• No sparking. Eliminates the risk of explosion caused by sparks from friction between metal surfaces (due to foreign objects or bent/torn metal buckets).
• Impact absorption. Plastic bends and flexes around obstacles and then returns to its original shape.
• Corrosion resistance. Plastic never oxidizes or rusts.
• Lower weight. Reduces wear on elevator mechanical components and lowers energy consumption.
• Cost savings. The system consumes less energy due to the lower weight of the buckets.
• Each type of plastic (polyethylene, nylon, polyurethane) is suitable for different conveyed materials and operating temperatures.
• No sharp edges. Plastic provides safer handling and eliminates the risk of cuts during elevator maintenance.
• Lower cost. Plastic buckets are cheaper than comparable steel buckets.
• Suitable for food products. Most polyethylene (HDPE) buckets are FDA certified (for nylon and polyurethane, certification depends on the manufacturer).

The price ratio depends on the bucket's application, material, wall thickness, quality, and country of manufacture.

Common types of metal buckets include stamped steel, bent steel, and cast iron buckets. Common plastic buckets include those made of polyethylene, nylon, and polyurethane. All of these can have different wall thicknesses. The quality of the raw materials also significantly affects the cost of plastic buckets. Therefore, comparing metal and plastic buckets without specifying the intended use, material, wall thickness, quality, and country of manufacture is impossible.

If you compare a common type of bucket used in Ukraine for grain transportation from different price segments—a high-quality Tapco high-density polyethylene (HDPE) bucket manufactured in the USA and an inexpensive stamped steel bucket with a thin 1.5 mm wall manufactured in Ukraine—the steel bucket will be 30-50% cheaper. At the same time, it's important to note that polymer buckets have fundamental advantages over metal ones, particularly in terms of operational safety and energy efficiency.

When comparing the total cost of ownership, metal buckets are more expensive than polymer ones due to their greater weight and, consequently, higher energy consumption.

The most wear-resistant elevator buckets are metal buckets made of standard carbon steel or stainless steel.

Stamped or bent steel buckets (used for transporting agricultural products, food products, or mildly abrasive materials) with a thickness of 3 mm or even 1.5–2 mm last longer than polyurethane and nylon buckets, not to mention polyethylene ones. This remains true even when compared with the highest-strength and highest-quality plastic buckets (such as Tapco buckets).

However, the critical disadvantages of steel buckets compared to plastic ones must be taken into account. For this reason, plastic buckets, despite being less durable than steel buckets, have become much more widespread.

A separate category is welded steel buckets for transporting heavy, hot, or highly abrasive materials. Such buckets do not have plastic equivalents, therefore they can be considered the most durable.

Plastic buckets manufactured by Tapco probably are among the most durable in the world. Tapco, Inc. (St. Louis, USA) was one of the first companies to recognize the advantages of plastic buckets and began manufacturing them in the 1970s.

The company manufactures buckets exclusively from premium virgin raw materials using advanced molding technologies.

For cleaning rubber-fabric conveyor belts carrying sticky materials, the best solution is to use a combination of two or three Flexco cleaners — a primary cleaner with a polyurethane blade and a 1-2 secondary cleaners with tungsten carbide blades.

The primary cleaner with a polyurethane blade removes approximately 70–90% of the material from the belt and is installed on the drive pulley. The secondary cleaner is installed nearby after primary cleane  and removes the remaining material.

A drive connection (coupling or clutch) is a mechanical component designed to connect the ends of shafts and transmit torque between them without changing its magnitude or direction. Depending on the type, these devices also accommodate for shaft misalignment during installation, dampen vibrations, and protect mechanisms from critical overloads during operation.

The main types of drive connections are classified according to their operating principle: rigid couplings for perfectly aligned shafts; flexible couplings (such as gear, disc, and roller chain couplings) for reducing misalignment and vibrations; engaging couplings (friction and jaw couplings) for controlled connection and disconnection during operation; and torque limiters for overload protection.

To properly select a coupling, it is necessary to know three key parameters: the system’s nominal torque, the mounting diameters of both shafts, and the operating conditions (rotational speed and presence of shock loads). The type and degree of shaft misalignment must also be considered: a rigid coupling is suitable for aligned shafts, while a flexible coupling is required to accommodate shaft misalignment.

A flexible coupling is used to compensate for dynamic loads, smooth torsional vibrations, and absorb shocks during motor startup or shutdown. Unlike rigid connections, flexible couplings contain an elastic element (such as a rubber spider or polyurethane insert) that deforms under load, protecting bearings from damage.

A torque limiter is a protective mechanism that automatically disconnects the kinematic chain or begins to slip when the torque exceeds the permissible limit. It is activated when equipment jams. Torque limiters may be friction-type (slipping due to friction discs) or shear-pin type (where a special pin breaks under overload).

Shafts of different diameters are best connected using split adapter couplings, pin-and-bush couplings, or bellows couplings with hubs bored to the required dimensions. Manufacturers often supply half-couplings as separate components: one half-coupling is selected for the driving shaft diameter, the other for the driven shaft diameter, and they are connected using a common flexible element.

Proper coupling alignment during installation is necessary to eliminate radial, angular, and axial shaft misalignment. The most accurate method is the use of industrial laser alignment systems, which reduce error to as little as 0.01 mm. Alignment can also be performed using radial-axial brackets and dial indicators by adjusting shaft alignment with calibrated shims placed under the motor feet.

An overrunning clutch (freewheel / cam clutch) is a mechanism that transmits torque in only one direction and automatically disengages when the speed of the driven shaft exceeds the speed of the driving shaft. It is widely used in starters, belt conveyors, and mechatronic packaging and logistics systems to prevent reverse rotation and protect gearboxes from inertial shock loads.

A drive coupling most commonly fails due to critical shaft misalignment (lack of proper alignment), which creates destructive radial loads on flexible elements and bearings. Other causes of premature wear include regular overloads exceeding the maximum allowable torque, severe vibration during equipment startup, and loss of elasticity of polyurethane inserts caused by overheating.

Total Cost of Ownership (TCO) is the complete sum of all direct and indirect costs associated with the purchase, implementation, operation, and disposal of a spare part throughout its entire service life.

The lower the TCO of a particular spare part, the better, as it reduces the financial burden on the enterprise.

To determine the most economically efficient spare part among several options, it is necessary to compare their TCO calculated per one year of operation.

Example of calculating the annual TCO of two rubber conveyor belts:

Please note that Belt No. 1, despite having a lower purchase cost, is less economically efficient for the enterprise than Belt No. 2 because Belt No. 1 operated for only 3 years (compared to 5 years for Belt No. 2), required unscheduled repairs, and caused production losses.

This example demonstrates a typical situation: using high-quality, more expensive spare parts is often more economically beneficial than using cheaper, lower-quality alternatives.