---
title: "Elevator Buckets for Pipe Rolling Production: Polyurethane vs. Steel and Rubber"
description: "Why polyurethane elevator buckets last 10 times longer than rubber and are more effective than steel in pipe rolling production. Comparative analysis, advice, custom orders."
lang: "en"
date: "2026-08-12"
canonical_url: "https://timol.com.ua/en/statti/shneki-pogruzochnye-dlya-truboprokatnoye-proizvodstvo"
---
# Elevator Buckets for Pipe Rolling Production: Polyurethane vs. Steel and Rubber

Downtime in the transport line due to elevator bucket wear is a common headache for a pipe rolling plant technologist: the bucket wears out, loses shape, or breaks under the flow of scale, halting the transportation of sludge or pipe shavings. Metal buckets are often replaced quarterly due to corrosion and abrasive wear, while rubber ones even more frequently. Switching to polyurethane allows you to avoid this problem for years: the material is 10 times more wear-resistant than rubber, resistant to impact and chemicals. In this article, I will discuss why polyurethane buckets are optimal for pipe rolling production, which components are worth replacing, and how this affects the operation and economy of the plant.

## Why are polyurethane buckets more effective specifically for pipe rolling production?
Polyurethane elevator buckets provide 10 times higher wear resistance compared to rubber counterparts and absorb impacts and vibrations more effectively than steel. In pipe rolling production, elevators face aggressive flows of hot sludge, scale, scrap, and technological dust. The abrasive action is maximal here: particles destroy the bucket edge and walls, especially at loading and unloading points. Polyurethane retains its shape, does not crack from temperature fluctuations, and does not lose properties when in contact with oils, technological waters, and aggressive additives.

Practice shows that polyurethane operates in a temperature range from -60 to +100 °C, so buckets remain elastic in both cold and hot workshops. High resilience (rebound elasticity of 35-65%) provides a cushioning effect when capturing and transporting abrasive or bulky material. This reduces dynamic loads on the elevator body, decreases noise, and extends the service life not only of the bucket but also of the entire transport line. This property is critical when lifting bulky metal, where each impact on the buckets multiplies over thousands of cycles per shift.

Another important aspect: polyurethane does not corrode, is not destroyed by moisture, condensate, or the influence of technological fluids in pipe rolling production. This is especially valuable in areas with unstable ventilation and temperature fluctuations, where steel and rubber buckets quickly fail. As a result, replacing with polyurethane buckets helps avoid unscheduled stops and frequent repairs in the most loaded transport zones.

## What are the advantages of polyurethane compared to rubber, steel, and caprolon in elevator components?
Polyurethane demonstrates the lowest wear among elastomers (20-45 mm³ according to DIN 53516), which is 2-10 times better than rubber (NBR: 80-150 mm³; SBR: 100-200 mm³) and comparable to caprolon (30-90 mm³), but with much better impact resistance. Caprolon is rigid and brittle under local impacts, which often occur in pipe rolling elevators when metal fragments enter. Steel buckets are significantly heavier, noisier, and transmit impacts to the frame, accelerating bearing and support wear, complicating maintenance, and increasing the risk of accidents.

Rubber, even oil-resistant NBR, wears quickly under abrasives and loses strength when in contact with technological oils. Polyurethane, on the other hand, maintains its characteristics over a wide temperature range and is resistant to most technological fluids. Thanks to this, polyurethane buckets can be used in conditions where rubber or plastic ones fail within months. The table below provides key numerical indicators for comparison:

| Bucket Material | Wear (DIN 53516) | Working Temperature | Density | Tensile Strength | Rebound Elasticity |
|-------------------------|----------------------|-------------------|-----------------|-------------------|----------------------|
| **Polyurethane (TIMOL)** | 20-45 mm³ | -60...+100 °C | 1.05-1.25 g/cm³ | 25-60 MPa | 35-65% |
| Rubber NBR | 80-150 mm³ | -30...+100 °C | 1-1.3 g/cm³ | 10-25 MPa | 20-45% |
| Rubber SBR | 100-200 mm³ | -40...+80 °C | 0.94-1.1 g/cm³ | 8-20 MPa | 30-55% |
| Caprolon (PA6/PA66) | 30-90 mm³ | -40...+100 °C | 1.13-1.15 g/cm³ | 60-85 MPa | 5-15% |
| Structural Steel |, | -40...+500 °C | 7.7-7.9 g/cm³ | 370-700 MPa |, |

Polyurethane wear according to DIN 53516 is 20-45 mm³, while for rubbers, it ranges from 80 to 200 mm³. This means even the best oil-resistant NBR rubber wears out 2-5 times faster, and SBR up to 10 times faster. Caprolon is closer in wear but cannot withstand impact loads and vibrations typical for pipe rolling elevators. Steel excels in tensile strength but loses due to weight, noise, and corrosion. Polyurethane combines wear resistance, resilience, and chemical inertness.

## Which components and parts should be replaced with polyurethane in pipe rolling plant elevators?
The greatest effect comes from replacing metal, rubber, or plastic buckets with polyurethane ones, as well as lining feed lines, scrapers, seals, and support rollers. In areas where the main wear and impact loads occur, such as material capture, transfer, and unloading points, polyurethane provides maximum resource. For pipe rolling lines, this is especially critical since scale, sludge, technological dust, and crushed metal are transported here, all of which sharply reduce the service life of traditional materials.

Polyurethane elevator buckets easily adapt to standard belt and fastening sizes, manufactured according to customer drawings or samples. The finished product is mounted with standard bolt connections, requiring no special tools or elevator modifications. Additionally, bolt holes, stiffening ribs, or lining of the belt body with polyurethane sheets can be ordered. Importantly, polyurethane is resistant to technological oils, moisture, acidic or alkaline additives, so components operate stably even in the most aggressive conditions.

By replacing components most prone to wear, the service life of buckets and transport systems increases significantly. This reduces the number of stops for repairs and planned replacements, decreases maintenance costs and spare parts inventory. Switching to polyurethane is especially justified in areas where frequent maintenance is impossible or components operate continuously.

## What effect does a company achieve after switching to polyurethane buckets?
Replacing traditional materials with polyurethane yields a noticeable economic and technological effect. Firstly, downtime frequency decreases: buckets last longer due to wear resistance 10 times higher than rubber, and component repairs are needed less often. Secondly, the mass of a polyurethane bucket is 6-7 times less than a steel one, reducing loads on electric drives, bearings, decreasing energy consumption costs, and slowing the wear of other components.

The thermal range of -60 to +100 °C allows buckets to be used in both hot and cold workshops without the risk of cracking or losing elasticity. Noise and vibration from polyurethane bucket operation are significantly lower, positively affecting operator safety and comfort, especially noticeable on lines where the elevator operates near workstations. The material is not afraid of moisture, oils, and many aggressive additives from the technological environment of pipe rolling production.

The service life increases significantly, and line productivity remains stable: instead of unscheduled stops and urgent repairs, you get a predictable maintenance schedule and minimized emergency situations. This is especially valuable at large pipe rolling plants, where even an hour of transport downtime leads to significant production losses.

> **Engineer’s Tip:** For elevator buckets in pipe rolling workshops, I recommend choosing polyurethane hardness in the range of 80-95 Shore A. This is the optimal balance of hardness and resilience for absorbing abrasive impacts and preventing chipping. Before installation, ensure the mounting surface is clean, free of burrs and old material residues, as this significantly increases the fastening resource and minimizes the risk of local defects.

## How to choose the hardness of polyurethane buckets and what to consider when ordering?
The choice of polyurethane hardness for buckets depends on the nature of the load, transport speed, and type of fastening. For transporting scale, sludge, and crushed metal, the optimal hardness is 80-95 Shore A: this provides sufficient resilience for impact absorption, but the material does not deform under load. If transportation is carried out at high speed or with a high content of sharp particles, it is worth choosing the upper hardness range.

The production of buckets by the free casting method allows changing wall thickness, size, and shape for specific tasks. The TIMOL factory manufactures buckets according to drawings, samples, or standard sizes, with the possibility of bolt holes, stiffening ribs, and lining. The technologist calculates the load in detail and selects the optimal configuration for your line. It is important to consider the technological scheme of the elevator, the type of material being transported, and the nature of wear. If consultation is needed, [reference information](/informatsiya) can help guide your choice.

## Manufacturing technology and installation features of polyurethane buckets
The production of elevator buckets is carried out by the free casting method: liquid polyurethane with the specified hardness is poured into a prepared mold, and after polymerization, the product is ready for installation. This allows the production of buckets of any complexity, with holes, stiffening ribs, and variable wall thickness. The advantage of the technology is the ability to quickly adapt to changes in drawings or size, produce a trial batch or single units for line modernization.

Installation of polyurethane buckets is carried out with standard bolt connections: the bucket is attached to the belt or chain, matching existing mounting holes. Before installation, it is advisable to clean the mounting surface of metal residues, old rubber, or contaminants, ensuring quality adhesion and minimizing local defects. If necessary, buckets can be removed for inspection or replacement without damaging the belt. Maintenance is limited to visual inspection and periodic cleaning of adhered material.

## Where to learn more, get consultation, and order custom products?
The TIMOL factory has real experience supplying polyurethane buckets for pipe rolling plants in Ukraine, manufacturing products according to customer drawings or samples, selecting hardness and type of polyurethane for specific components. Detailed information about polyurethane buckets can be found on the [catalog page](/katalog). For application features in pipe rolling production, visit the [industries section](/galuzi/truboprokatnoye_proizvodstvo). For drawing calculations or quick orders, contact us through [contacts](/contacts): a factory engineer will help select the material, develop a solution for your task, and organize production.