Elevator tape 600x3 0/0 BKNL-65 GOST 20-85

Elevator Belting

Elevator belting is the primary traction element in the design of vertical bucket elevators (grain legs), ensuring the continuous lifting of bulk materials. Structurally, it is a reinforced rubber-textile canvas that performs two tasks: transmitting torque from the drive and securely fixing the attached equipment (buckets). The specifics of operating in a vertical plane impose special requirements on this product, distinct from standard conveyor lines: the belt must withstand significant static and dynamic tensile loads, as well as ensure rigid retention of bolted connections without tearing the fabric.

The geography of elevator belting use covers all stages of handling grain and technical cargoes. It is an indispensable component at silos, threshing floors, feed mills, flour and oil production lines, as well as in port infrastructure. The product is designed to transport a wide range of products—from light crops (sunflower, bran) to heavy grain (corn, wheat) and abrasive mineral mixtures.

The stability and productivity of an elevator directly correlate with the quality of the installed traction component. Reliable elevator belting is characterized by a minimal relative elongation index during operation, which avoids frequent stops to re-tension the belt. In addition, critical parameters include resistance to ply delamination (adhesion) and transverse rigidity, which is necessary to stabilize the bucket during scooping and discharging. Belt selection is carried out individually, based on the shaft height, drive power, and environmental aggressiveness.

Construction and Materials of Elevator Belting

The mechanical endurance and service life of any elevator belt are determined by its internal architecture—the traction carcass. It is formed from a package of fabric plies separated by cushioning rubber skims. It is the combination of the type and quantity of these layers that dictates the final characteristics of the product: ultimate breaking load, longitudinal flexibility, and the reliability of hardware seating.

Types of Elevator Belt Fabrics: BKNL, TK, and Polyurethane

In the standard capacity equipment segment, the undisputed leader remains elevator belting based on BKNL-65 fabric. This is a classic belting canvas made from a blend of polyester (Lavsan) and cotton threads. Such a combination ensures a breaking load of 55 N/mm with a layer thickness of about 1.2 mm. The popularity of BKNL is due to its versatility—it works ideally on most domestic elevators, ensuring predictable operation. An important engineering advantage of this material is its ability to dampen vibrations and tightly compress the shank of the elevator bolt, minimizing the risk of the bucket tearing out under load.

For high-load terminals, high-rise elevators, and operation in humid environments, the technical standard is the use of synthetic TK-200 fabric (Polyamide). The main difference of this carcass is its complete inertness to moisture. Unlike cotton, polyamide is not subject to rotting when transporting damp grain and similar products. The strength characteristic of such fabric reaches 200 N/mm per single ply, which is 4 times higher than BKNL figures. Furthermore, synthetic elevator belting has an extremely low elongation coefficient, which significantly reduces the number of technical stops for belt tensioning during the season.

For specific tasks in the food and seed industries, we offer polyurethane products. This is a modern alternative to rubber that solves the problem of product purity and chemical resistance. Polyurethane is critical when transporting oilseeds (sunflower, rapeseed, soy), as it does not degrade under the influence of vegetable fats. Despite the higher cost, the service life of such elevator belting is 3-4 times longer than that of rubber-textile analogs.

We have adapted our warehouse stock to the needs of the entire market spectrum—from farm enterprises to port elevators. We always have elevator belting in stock in a width range from 125 mm to 800 mm, with a variety of ply counts from 2 to 8. We have also moved away from selling exclusively in standard rolls—you can order an exact cut of the belt to the required length, allowing you to equip your machinery without unnecessary costs for remnants that cannot be used.

Elevator Belt Width Selection and Equipment Compatibility

Correct traction component parameters are the guarantee of the entire structure's durability. When choosing the width of the elevator belt, an engineering rule applies: the belt must be wider than the bucket (technological overhang of 10-25 mm on each side), but narrower than the internal space of the casing (leg) and the drive pulley. Failure to observe these clearances leads to friction against the casing walls, heating, and emergency tearing of the edges.

We have structured our warehouse program based on the types of equipment operated in Ukraine:

1. Small Capacity Segment and Seed Lines For low-speed, small elevators (capacity 5-10 t/h) and high-precision grain calibration lines, elevator belting with a width of 125 mm and 150 mm is used. It is compatible with grain cleaning machines and N-5, N-10 type elevators, intended for use with buckets of 110 mm width or modernized variants with increased capacity.

2. Farm Standard (ZAV Complexes) This is the most popular segment for private farms, and here the alternative-free leader is the 175 mm width, installed on classic N-20, N-25 elevators and their modern analogs in ZAV-20/40 complexes. Less frequently, for reinforced versions or imported dryers, a width of 200 mm is applied. The belt is compatible with N-20, 2-20, farm dryers, and typically uses buckets with a width of 160 mm and 180 mm.

3. Linear Elevators and Grain Reception Enterprises (HPP) For the industrial standard of enterprises with a grain flow of 50-100 tons per hour, belts with widths of 300 mm (for N-50, BC-50 elevators) and 400 mm (for high-capacity N-100, BC-100 units) are used. This is the foundation of the equipment park in these industries, requiring high carcass strength and compatibility with buckets 260 mm and 360-370 mm wide.

4. Port Transshipment and Terminals For route elevators where loading speed is critical (175 t/h and above), powerful elevator belting with a width of 450 mm is applied. Even wider belts (500-800 mm) are often found on horizontal galleries, railcar unloading stations, and ship loaders (compatible with UKZ-175, N-175 series, and others).

Recommended Elevator Belt Configurations for Tasks

Depending on the operating conditions, we offer various execution options for elevator belting, which have become the standard for both repair kits and the assembly of new elevator equipment:

• "Economy" Series (0/0) - Lightweight belts based on BKNL-65 fabric without external rubber covers. The ideal solution for enclosed spaces and dry grain. We stock all standard models, including the most common sizes: 125x3, 150x3, 150x4, 175x4, 300x5.
• "Standard" Series (with rubber covers) - These are classic wear-resistant BKNL belts with a protective rubber layer (type 2/0, 3/1), most often found in sizes 175x4, 300x5, 450x6.
• "Pro" Series (TK-200) - High-strength synthetic belts for wet conditions, high-rise elevators, and heavy loads. Also available in oil-resistant execution (for soy and sunflower) in popular configurations: 200x3, 300x4, 400x5, 500x6.

Thus, the warehouse program of Zavod Moroza is not limited only to the listed items—we support a full assortment range allowing us to satisfy any request, including non-standard widths, specific thicknesses (ply counts), and various rubber cover combinations. Regardless of whether you need a narrow belt for a seed line or a powerful belt for a port terminal, we will promptly ship exactly the variant provided for in your equipment's technical passport.

Characteristics of Elevator Belting 600x3 0/0 BKNL-65 (GOST 20-85)

This elevator belt is a classic example of a lightweight composite product designed for operation in conditions where flexibility and reliable fixation of attached equipment are critical factors. The design is based on a BKNL-65 fabric carcass with a width of 600 mm, and the marking "3" indicates the number of fabric plies (layers) forming the core. Such a number of plies is optimal for ensuring sufficient tensile strength while maintaining high belt elasticity; this allows the belt to be used on pulleys of smaller diameter without the risk of internal stresses and delamination during bending.

The main distinction of this model is the index 0/0 in the marking. This means that the elevator belt has no additional rubber layers over the fabric carcass, and its surface has the characteristic texture of the fabric (belting). This engineering solution gives the product several operational advantages:

1. Joint Rigidity The absence of an elastic rubber layer eliminates the effect of "settling" or cushioning under the washers. This allows elevator bolts to be tightened "dead tight," ensuring monolithic fixation of the buckets, which is especially important given the significant width of the belt (600 mm).

2. Grip with the Drive On modern elevators, drive pulleys are usually lagged (rubberized). The rough fabric surface of the 0/0 type belt creates ideal frictional contact with the pulley rubber, guaranteeing the absence of slippage even without additional covers.

3. Economic Efficiency The product is significantly lighter, which reduces the starting and operating load on the motor-reducer and bearing units, and also makes such a belt significantly more budget-friendly compared to heavier rubberized analogs.

It should be borne in mind that since the fabric carcass in 0/0 type belts is open, this type of belt is recommended for use primarily in enclosed transport galleries and elevators working with dry, non-aggressive products to avoid direct atmospheric moisture impact on the fabric. However, since the overwhelming majority of technological processes for grain processing and storage occur in exactly such conditions, the 0/0 belt remains the most rational and economically justified choice for a standard elevator.

Buy Elevator Belting at "Zavod Moroza" with Additional Services

Purchasing components from a manufacturer of agricultural machinery is a guarantee of price and access to professional technical support. Cooperation with Zavod Moroza implies ensuring full operational compatibility of the product with your equipment. If necessary, specialists from our design bureau can also perform an individual selection of belt parameters and components, guaranteeing their adaptation to the technical conditions of a specific elevator unit. Regarding the precise calculation of parameters depending on the splicing technology, a critical stage of the order is determining the correct belt length. Here it is important to consider the type of future connection:

• Traditional "Overlap" Method: This is quite common when a classic bolted connection of the ends is planned. Here, 1.5-2.0 meters for the overlap must be added to the total calculated length of the belt.
• Mechanical Fasteners (Recommended): We offer a modern alternative, referring to specialized elevator belt clamps. They allow splicing the belt without thickening, which ensures smooth running over pulleys and savings on the material itself (no extra footage needed for the overlap).

Factory perforation and appropriate attachment equipment will also come in handy, as drilling holes "on-site" often leads to misalignment and bucket skew. We offer a machine perforation service, where holes are punched on a coordinate machine with ideal pitch adherence—this guarantees fast installation and uniform load distribution. Also, replacing the elevator belt is the ideal moment to resolve the issue of updating the bucket fleet. We will help complete the order with metal (welded, pressed/seamless, or folded) or polymer products, as well as special fasteners, which will significantly simplify the installation process and reduce equipment downtime.

It is also advisable to use the replacement of the elevator belt as a stage for technical re-equipment (re-engineering) of the elevator to increase its throughput capacity. Our engineers can calculate modernization options, for example, switching to a thinner but stronger synthetic TK-200 belt. This reduces the weight of moving parts and unloads the drive, opening up the possibility of installing larger capacity buckets or applying a "bottomless bucket" system. Such a solution forms a significantly larger or almost continuous stream of grain, ensuring a productivity increase of 20-30% without capital investments in replacing shafts or the motor-reducer.

It is thanks to this deep engineering approach that over years of work in the agricultural machinery market, Zavod Moroza has earned the reputation of a reliable partner who always fulfills their obligations. We ensure a full support cycle—from professional material selection to operational delivery to any corner of the country. Therefore, if you are looking for ways to improve efficiency or need an urgent replacement of elevator belting—contact us. We are always in touch for consultations, as well as for the operational resolution of your task and rapid shipment of necessary components.