Epiroc EC Series Inner Bush Outer Bush For Hydraulic Breaker Guide Repair

Product Introduction

The Epiroc EC Series Inner Bush Outer Bush For Hydraulic Breaker Guide Repair is designed for excavator-mounted hydraulic breaker hammers used in demolition, quarrying, mining, road construction, trenching, concrete breaking, and heavy-duty rock breaking applications. It is suitable for Epiroc EC Series hydraulic breakers, including common models such as EC40T, EC60T, EC70T, EC80T, EC90T, EC100T, EC120T, EC135T, EC140T, EC150T, EC155T, EC165T, and EC180T.

The inner bush and outer bush are important wear parts in the hydraulic breaker front head system. They guide the breaker chisel during operation, reduce abnormal tool movement, protect the front head, and help maintain stable impact energy transfer. During rock breaking and concrete demolition, the chisel moves repeatedly under high impact force. If the bushing clearance becomes too large, the chisel may shake, tilt, or wear unevenly, causing damage to related breaker parts.

A worn inner bush or outer bush may lead to weak impact, abnormal noise, faster chisel wear, retaining pin damage, front head wear, piston impact problems, and higher repair cost. For hydraulic breaker repair workshops, spare parts dealers, equipment rental companies, demolition contractors, quarry operators, and mining customers, replacing worn bushings in time is an important part of regular breaker maintenance.

This product is an aftermarket replacement inner bush and outer bush compatible with Epiroc EC Series hydraulic breakers. The Epiroc brand name and EC model references are used only for compatibility identification.

Material

Our Epiroc EC Series inner bush and outer bush are commonly produced from selected wear-resistant alloy steel according to model size and customer requirements. The material should have good wear resistance, impact resistance, structural strength, and dimensional stability.

For hydraulic breaker bushings, material performance is very important because the bushing is in close contact with the breaker chisel. The part must resist friction, impact vibration, dust, stone particles, and heavy working pressure. If the material is too soft, the inner diameter may wear quickly. If the material is too brittle, the bushing may crack during strong impact operation.

Depending on the working condition and order requirements, material, hardness, surface treatment, and machining tolerance can be adjusted. Heat treatment is usually applied to improve surface hardness and wear resistance while keeping enough toughness for repeated impact conditions.

Product Features

The Epiroc EC Series hydraulic breaker bushing set is designed for accurate fitting and stable chisel guidance. The inner bush and outer bush must match the chisel diameter, front head structure, retaining pin position, and lower breaker body. Accurate inner diameter, outer diameter, length, groove position, and fitting tolerance are key factors for reliable performance.

A properly matched inner bush can guide the chisel more smoothly and reduce side movement during impact. The outer bush supports the tool guide system and helps protect the front head from direct wear. When both parts work together correctly, the hydraulic breaker can maintain better impact direction and reduce unnecessary stress on the piston, rod pin, front head, and chisel.

The production process may include material cutting, CNC machining, heat treatment, grinding, boring, and surface finishing. Precision machining helps improve installation accuracy and working stability. Good surface finish can also help reduce abnormal friction between the chisel and bushing.

These bushings are suitable for regular maintenance, emergency repair, hydraulic hammer rebuild projects, and spare parts stock. They can be supplied as single parts, as a bushing set, or together with chisels, pistons, seal kits, diaphragms, rod pins, through bolts, side bolts, front heads, back heads, cylinders, buffers, and wear plates.

Main Advantages

The main advantage of the Epiroc EC Series inner bush and outer bush is that they help restore the correct tool guide clearance inside the breaker front head. Correct clearance is important for stable chisel movement and efficient impact energy transfer.

If the clearance is too large, the chisel may shake during operation. This can reduce breaking efficiency and accelerate wear on the chisel, retaining pin, front head, and piston impact surface. If the clearance is too tight, the chisel may not move smoothly, installation may become difficult, and heat or friction may increase. A correctly matched bushing set helps the breaker work more smoothly and safely.

For demolition contractors, reliable bushings are important when breaking reinforced concrete, foundations, bridge structures, and pavement. For quarry and mining customers, strong bushings are needed for secondary rock breaking, stone splitting, and hard material reduction. For repair shops and distributors, bushing parts are regular replacement items with stable demand.

Replacing worn bushings in time can reduce the risk of larger repairs. Instead of allowing worn bushings to damage the front head, rod pin, chisel, or piston, regular inspection and timely replacement can help lower total maintenance cost.

Why Choose Us

Customers choose us because we focus on hydraulic breaker aftermarket tools and spare parts. We supply inner bushes, outer bushes, breaker chisels, pistons, seal kits, diaphragms, rod pins, through bolts, side bolts, front heads, back heads, cylinders, buffer parts, wear plates, and other hydraulic breaker repair components.

For Epiroc EC Series inner bush and outer bush, we support model confirmation before production or shipment. If the customer is not sure about the correct bushing, they can provide the breaker model, chisel diameter, old bushing dimensions, photos, drawings, samples, or part numbers. We can help check the matching details to reduce wrong orders.

We also support customized production, including size adjustment, material selection, hardness requirements, groove position, surface treatment, marking, labels, neutral packaging, and export packaging. Whether you are a hydraulic breaker repair workshop, machinery parts distributor, construction contractor, equipment rental company, quarry operator, or mining service supplier, we can provide flexible support for regular stock orders and urgent replacement needs.

Applications

The Epiroc EC Series inner bush and outer bush are widely used in:

• Hydraulic breaker front head repair

• Excavator rock breaker maintenance

• Chisel guide system replacement

• Demolition hammer service and rebuild

• Quarry and mining breaker maintenance

• Road construction and concrete breaking equipment repair

• Hydraulic hammer spare parts stock

• Machinery repair workshop replacement projects

Parameter Table

FAQ

Q1: Are these inner bushes and outer bushes original Epiroc parts?
No. These are aftermarket replacement bushings compatible with Epiroc EC Series hydraulic breakers. The Epiroc name and model references are used only for compatibility identification.

Q2: What is the function of the inner bush and outer bush?
The inner bush and outer bush guide the breaker chisel, reduce abnormal tool shaking, protect the front head, and support stable impact energy transfer.

Q3: When should I replace the breaker bushings?
They should be inspected and replaced when the chisel shakes too much, the bushing inner diameter is worn, the breaker has weak impact, the retaining pin wears quickly, or the front head shows abnormal wear.

Q4: What material is used for the bushings?
The bushings are commonly made from wear-resistant alloy steel. Material, hardness, and surface treatment can be adjusted according to model and customer requirements.

Q5: How can I confirm the correct bushing size?
You can provide the breaker model, chisel diameter, old bushing dimensions, photos, drawings, samples, or part numbers. We can help confirm before production or shipment.

Q6: Can I order bushings with other hydraulic breaker parts?
Yes. Inner bushes and outer bushes can be supplied together with chisels, pistons, seal kits, diaphragms, rod pins, through bolts, side bolts, cylinders, front heads, back heads, buffers, and wear plates.