Inner Bush Outer Bush 20Crmo 42Crmo for 18-26 tons Excavator

Meta Description: Guchuan Machinery specializes in high-quality, durable inner bush and outer bush for hydraulic breakers. Compatible with models like SB, GCB, MS, HB series & major brands.Enhance performance, reduce downtime & maintenance costs. B2B OEM/ODM available.

Introduction: 

Bushings in hydraulic breakers serve as protective sleeves and alignment components that:

• Guide the piston during its reciprocating motion

• Absorb lateral forces and vibrations

• Maintain proper alignment between moving parts

• Reduce metal-to-metal contact and wear

• Distribute impact forces evenly throughout the breaker structure

Without precisely engineered bushings, even the most powerful hydraulic breakers would experience rapid wear, misalignment, decreased efficiency, and catastrophic failure.

The Consequences of Inferior Bushings

Substandard bushings lead to:

• Accelerated wear of pistons and cylinders

• Loss of impact energy through misalignment

• Increased hydraulic fluid contamination

• Frequent downtime and maintenance costs

• Reduced breaker lifespan by up to 60%

Guchuan Machinery: Expertise You Can Build Upon

Guchuan Machinery has established itself as a trusted B2B manufacturer and global supplier of high-performance engineering machinery components. Our deep-rooted collaborations with world-renowned brands in the hydraulic breaker industry have provided us with unparalleled insights into material science, precise engineering tolerances, and real-world performance requirements.

We don't just follow specifications; we understand the physics of impact. This expertise is poured into every bush we produce, ensuring they meet the rigorous demands of professional applications worldwide.

Product-Specific Applications Across Our Breaker Series

SB/GCB Series Bushings

Our comprehensive SB/GCB series (from SB10/GCB30 to SB151/GCB400) utilizes progressively engineered bushings:

Light to Medium Range (SB10-GCB30 to SB40-GCB60)

• Primarily 20CrMo construction

• Optimized for frequent, moderate impacts

• Balanced cost-performance ratio for general construction

Heavy to Super-Heavy Range (SB43-GCB75 to SB151-GCB400)

• 42CrMo with enhanced heat treatment

• Multi-stage tempering for extreme applications

• Special attention to impact zone reinforcement

MS Series Applications

Our MS series (MS550 to MS800) features:

• Progressive wall thickness design

• Integrated lubrication channels

• Asymmetric hardening for directional stress patterns

HB/GCB and MB/NB Series Specialization

For the HB-GCB and MB-NB series, we've developed:

• Composite bushing designs in certain models

• Hybrid material applications where appropriate

• Custom hardening patterns based on piston dynamics

The Guchuan Advantage: Why Our Bushes Stand Out

Premium Material Formulation: We use advanced, wear-resistant rubber compounds and polyurethane materials engineered for exceptional elasticity, tensile strength, and resistance to oil, weathering, and compression set. This ensures consistent performance over a longer lifespan.

Precision Manufacturing: State-of-the-art molding and machining processes guarantee exact dimensional accuracy and consistent density. A perfect fit eliminates slippage and ensures optimal force distribution.

Rigorous Quality Control: Every batch undergoes strict testing for durability, hardness, and resilience. We adhere to international standards to deliver reliability you can count on.

Direct Cost Efficiency: As a factory-direct B2B partner, we eliminate middleman markups, offering you superior quality at highly competitive prices, maximizing your return on investment.