Hydraulic Wear Rings & Guide Rings

Wear rings or guide rings provide a bearing surface to center the piston and rod dynamic surfaces in a reciprocating cylinder application. The guide ring prevents metal-to-metal contact and improves seal life performance. 

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Hydraulic Wear Rings & Guide Ring Applications

Hydraulic Wear Ring Benefits

• Provide a bearing surface 

• Prevents metal-to-metal contact 

• Provide guidance and alignment

• Improves seal life performance 

 What Are Guide Rings?

Wear rings and guide rings are available in many different Duron® materials and are specified based on your conditions and parameters. For a complete proposal, submit a request for quote and we will respond, immediately.     

Non-cut Wear / Guide Ring Used primarily in piston and rod application under .500 inches in diameter. RFQ Angled Wear / Guide Ring Standard design for most guide ring applications for Piston and Shaft guidance.
Used for improving bearing stress at the gap RFQ Butt Wear / Guide Ring Used in applications not requiring an angle cut design. RFQ Step Joint Wear / Guide Ring Use to help provide piston guidance and help reduce pressure pluses on the piston seal RFQ

Contact our technical sales staff today to discuss your application's operating, hardware, and commercial conditions to develop the best-performing seal solution.

Hydraulic cylinders are designed to generate longitudinal force and handle the longitudinal load. But many of these cylinders are also impacted severely by the transverse load. The engineering rule of thumb says that about 10-15% of the hydraulic force is always applied as transverse load, even in the most ideal situation.

The mechanical impact of this load can be reduced by using a variety of techniques but radial load still exists and occurs, causing excessive wear of internal guide components (bearing components) in the glands and on the piston heads of the cylinders.

Enter: Hydraulic Wear Rings

The use of internal guiding components or &#;wear rings&#; can dramatically reduce the impact of radial load, especially in horizontal and long-stroke applications. These rings can ensure that sliding components of the cylinders are properly supported against radial loads and move properly guided in a longitudinal direction.
A correctly designed bearing system in combination with the proper non-metallic wear ring material can prolong the lifetime of the seal components, improving both the reliability and service life of the cylinders.

The company is the world’s best Piston Wear Ring supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

The functions of guide components in hydraulic cylinders include:

1. Act as a linear (longitudinal) guide for the moving metallic components in the cylinders
2. Provide radial support of the metallic components
3. Protect seal components against excessive mechanical radial force/load and deformation
4. Protect seal components against uneven wear out
5. Position moving metallic components in a concentric location, maintaining clearances/radial gaps
6. Protect seal components against the radial load-caused momentum

Wear Ring Choices

Traditionally ferrous and non-ferrous metallic guide components were used as bushings for rods/rams and piston heads. The typical ferrous bearing material was gray cast iron (various grades), while non-ferrous was bearing bronze (various grades). However, these guide types have been found to be problematic and costly over the long term.

High-performance non-metallic wear rings such as Chesterton 16K and 17K are the best choice to protect seal components against excessive radial force, mechanical damage, and transverse load momentum in the cylinders.

To learn more about techniques for reducing cylinder load, the benefits of non-metallic bearing bands, and the strength and weaknesses of various bearing band materials, download our free ebook:

Istvan Hajzer

Istvan R. Hajzer is the Global Product Line Manager for Engineered Polymer Solutions of A.W. Chesterton Company. He holds an MSc degree in Marine Engineering (with special studies in hydraulic driving and control systems) and an MBA. He has over 18 years' experience in the areas of heavy duty hydraulic/pneumatic and press machine applications. Istvan has helped customers from diverse industries upgrade critical fluid power equipment.

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