---
title: "Polyurethane Lining for Industrial Equipment: Extending Component Lifespan"
description: "How polyurethane lining extends equipment lifespan by 10 times. Comparison with rubber, steel, and caprolon. Custom orders at TIMOL."
lang: "en"
date: "2026-09-09"
canonical_url: "https://timol.com.ua/en/statti/futeruvannya-promyslovogo-obladnannya-zbilshennya-resursu"
---
# Polyurethane Lining for Industrial Equipment: Extending Component Lifespan

A steel chute or hopper wears out in 2-3 months, a rubber scraper is worn down by abrasives in a season, and another repair halts the entire line. Polyurethane lining extends the replacement interval by 10 times and significantly reduces component failure. Below, we explore how polyurethane protection works, its applications, how to choose the right hardness, and how it compares to rubber, steel, or caprolon.

## What is Polyurethane Lining and Why It Works

Lining involves applying a protective layer to the internal or external surface of a component to resist abrasive wear, impacts, and chemical exposure. TIMOL polyurethane combines high elasticity with sufficient hardness, allowing it to not only absorb abrasive impacts but also "return" them, preventing wear from cutting grooves. This wear physics makes polyurethane 10 times more wear-resistant than rubber, as confirmed by an abrasion index of 20-45 mm3 (DIN 53516) compared to 100-200 mm3 for SBR rubber.

In the optimal hardness range for lining, **80-95 Shore A**, polyurethane maintains elasticity, does not lose flexibility, and does not crack even under extreme abrasives. This makes it suitable for lining components in the mining, metallurgical, pipe rolling, pulp and paper industries, and transport systems. High reparability and ease of installation make it a universal choice for wear protection.

## Where Polyurethane Lining is Used: Components, Types of Parts, Installation Features

Polyurethane lining is used on the most heavily loaded components: chutes, gravity pipes, hoppers, screens, sieves, concrete mixer scrapers, support plates, and transport systems. These components are subject to constant impacts from hard particles, abrasive friction, temperature fluctuations, and vibrations. Here, metal or rubber quickly fail, while polyurethane maintains the integrity of the layer even under intense cycles.

Components where polyurethane is most effective:
- Internal surfaces of hoppers and chutes for bulk materials
- Gravity equipment in mining and metallurgical sectors
- Working parts of screens and sieves, belt conveyor scrapers
- Belt cleaners, lining of support plates

Polyurethane installation is carried out by free casting directly onto the component surface or through ready-made sheets and plates, which are mechanically or adhesively attached. The choice of method depends on the complexity of the geometry, access to the component, and expected load. When ordering to a drawing, the TIMOL factory manufactures elements precisely to customer dimensions, minimizing on-site adjustments. More about product types in the [polyurethane product catalog](/katalog).

## How Equipment Lifespan Changes with Polyurethane Lining

Using polyurethane extends the interval between lining replacements by 10 times compared to rubber or steel counterparts. This is achieved not only by a low abrasion index (20-45 mm3) but also by stable performance in extreme conditions: temperatures from -60 to +100 °C, dynamic loads, and contact with chemically aggressive substances. Metal linings are destroyed by local impacts, rubber ones quickly wear out or crack with temperature fluctuations. Polyurethane, due to its elasticity, dampens impulses and prevents abrasives from "biting" into the surface.

For components with high abrasiveness, transfer lines, screens, chutes, gravity systems, polyurethane lining means fewer emergency stops, longer planned cycles, and controlled repair costs. This is especially important for facilities with extensive transport systems or where equipment downtime critically affects the production schedule.

## Choosing Hardness and Design: How to Select Polyurethane for the Task

For abrasive components, the optimal hardness of polyurethane is **80-95 Shore A**. This material remains hard enough to resist wear but does not lose the elasticity critical for impact damping and abrasive cushioning. Products with lower hardness (70-80 Shore A) are used for seals where greater elasticity is needed, while harder grades (above 95 Shore A or Shore D) are not recommended for lining abrasive components due to reduced elasticity and risk of chipping. For non-standard components, the TIMOL factory selects the hardness and shape of the product according to the customer's drawing, considering the type of abrasive, fastening conditions, and mechanics of operation.

Lining can be done as a monolithic layer on the surface or as sectional plates, which simplifies maintenance and reduces downtime during repairs. When ordering, it is recommended to provide a drawing of the component and describe the nature of the load, which will allow for optimal selection of thickness and protection configuration.

> **Practical Tip:** For lining abrasive components, it is best to choose polyurethane with a hardness of 80-95 Shore A. This range provides maximum wear resistance and impact cushioning. Do not increase hardness to Shore D, as the material will become brittle and less resistant to abrasives.

## Comparison of Polyurethane with Rubber, Steel, and Caprolon: Numbers and Facts

TIMOL polyurethane significantly outperforms rubber, steel, and caprolon in wear resistance and versatility. According to DIN 53516, polyurethane has an abrasion of 20-45 mm3, while SBR rubber has 100-200 mm3, NBR 80-150 mm3, natural rubber 60-130 mm3, and caprolon 30-90 mm3. Steel is not subject to standard abrasion testing but quickly wears out in high-abrasive components, especially in areas of local impact, and weighs 6-7 times more than polyurethane.

| Material | Abrasion DIN 53516 (mm3) | Working t (°C) | Density (g/cm³) | Tensile Strength (MPa) |
|--------------------------|-------------------------|--------------------|------------------|--------------------------|
| TIMOL Polyurethane | 20-45 | -60...+100 | 1.05-1.25 | 25-60 |
| SBR Rubber | 100-200 | -40...80 | 0.94-1.1 | 8-20 |
| NBR Rubber | 80-150 | -30...100 | 1-1.3 | 10-25 |
| Natural Rubber | 60-130 | -50...70 | 0.92-1 | 20-30 |
| Steel (structural) |, | -40...500 | 7.7-7.9 | 370-700 |
| Caprolon (PA6/PA66) | 30-90 | -40...100 | 1.13-1.15 | 60-85 |

Importantly, polyurethane retains functionality over a wide temperature range, from -60 to +100 °C, when standard rubbers already lose elasticity or crack. Steel linings do not dampen impacts and amplify noise, while caprolon can crack upon impact. The polyurethane layer is easier to install: it can be cast in place or secured with sheets, fitting any complex geometry.

## Manufacturing Technology and Advantages of TIMOL Polyurethane

TIMOL polyurethane linings are produced by free casting, ensuring accurate replication of complex component geometry, including holes, grooves, seats, and fastenings. The material has a density of 1.05-1.25 g/cm³, tensile strength of 25-60 MPa, and rebound elasticity of 35-65%. The working temperature from -60 to +100 °C allows the lining to be used in both freezing and hot production areas.

Free casting allows for the production of thick protective layers, high-strength sheets, complex inserts, and even small series for non-standard components. All parts are made to customer dimensions, eliminating the need for on-site modifications. An advantage is that polyurethane is easily repairable, and a damaged section can be replaced or recast without dismantling the entire component. See the properties overview and application examples in the [reference information](/informatsiya).

## Installation, Maintenance, and Custom Orders

Polyurethane lining installation is carried out on a clean, degreased surface, often with prior abrasive treatment for better adhesion. Sheets or plates are fastened with bolts, clamps, or special adhesives, depending on the component design and load type. In the case of on-site free casting, complex shapes can be poured directly into the component. Maintenance involves periodic inspection and, if necessary, local replacement or repair of the damaged area.

When ordering custom lining, it is advisable to provide a detailed component diagram, specify operating conditions, temperature, and abrasive nature. TIMOL factory engineers will select the optimal hardness, layer thickness, and fastening type. Preparation for installation can also be ordered under factory conditions. The list of options is in the [polyurethane product catalog](/katalog).

## Practical Conclusion: Why Polyurethane Lining is a Long-Term Solution

Polyurethane lining for industrial equipment is a proven way to significantly increase component lifespan, reduce emergency stops, and make maintenance predictable. With high wear resistance, elasticity, reparability, and the ability to manufacture to drawings, TIMOL polyurethane is suitable for protection in 12 industries. Contact [TIMOL factory](/contacts) for consultation, hardness selection, and lining calculation for your equipment.