Daemo DMB Standard Series Inner Bush / Outer Bush / Thrust Ring

Product Introduction

The Daemo DMB Standard Series Inner Bush / Outer Bush / Thrust Ring is a hydraulic breaker wear parts set designed for excavator-mounted rock breaking hammers. It is suitable for Daemo DMB Standard Series hydraulic breakers, including common models such as DMB50, DMB70, DMB90, DMB140, DMB180, DMB210, DMB220, DMB230, DMB250, DMB300, DMB360, and DMB450.

The inner bush, outer bush, and thrust ring are important wear parts inside the hydraulic breaker front head system. During rock breaking, concrete demolition, quarry work, trenching, and road construction, the breaker chisel moves under repeated impact force. The bushings guide the chisel, reduce abnormal movement, protect the front head, and help maintain stable impact energy transfer.

If the inner bush or outer bush becomes worn, loose, cracked, or out of tolerance, the chisel may shake excessively during operation. This can lead to weak impact, faster chisel wear, retaining pin damage, front head wear, piston impact problems, and higher repair cost. Replacing the worn bushing set in time can help restore breaker stability and extend the service life of related hydraulic breaker spare parts.

This product is an aftermarket replacement inner bush, outer bush, and thrust ring set compatible with Daemo DMB Standard Series hydraulic breakers. The Daemo and DMB model names are used only for compatibility reference.

Product Features

Our Daemo DMB Standard Series bushing set is produced for high-impact hydraulic breaker working conditions. The inner bush and outer bush need strong wear resistance because they are in close contact with the breaker chisel during operation. They must also have accurate inner diameter, outer diameter, length, groove position, and fitting tolerance to ensure proper installation and stable working performance.

The thrust ring is used to support positioning, reduce direct impact stress, and help keep the breaker tool system working smoothly. Together with the inner bush and outer bush, it plays an important role in controlling chisel movement and protecting the breaker front head.

The parts can be produced from selected alloy steel or customer-specified materials according to model and working condition. Heat treatment, precision machining, and surface finishing are important steps in production. A good bushing set should have balanced hardness and toughness. It must resist wear, but it should not be too brittle under repeated impact vibration.

Accurate machining is especially important. If the bush is too tight, installation may be difficult and the chisel may not move smoothly. If the bush is too loose, the chisel may shake, impact direction may become unstable, and other parts may wear faster. Therefore, proper model confirmation and size checking are essential before purchasing.

Main Advantages

The main advantage of this Daemo DMB Standard Series inner bush, outer bush, and thrust ring set is its ability to improve breaker working stability and reduce abnormal chisel movement. It is suitable for regular maintenance, repair work, rebuild projects, and spare parts stock.

For demolition contractors, quarry operators, mining companies, road construction teams, and hydraulic breaker repair workshops, worn bushings are common replacement items. Keeping the correct bushing set in stock can reduce downtime and help machines return to work faster.

A properly matched bushing set can also protect other expensive breaker components. When the chisel is guided correctly, the impact force can be transferred more evenly. This helps reduce stress on the piston, front head, retaining pins, seal kit, and chisel. Timely replacement of bushings is a cost-effective way to maintain hydraulic breaker performance.

Why Choose Us

Customers choose us because we focus on hydraulic breaker spare parts and aftermarket replacement solutions. We supply breaker chisels, inner bushes, outer bushes, thrust rings, pistons, seal kits, diaphragms, cylinders, front heads, through bolts, side bolts, wear plates, and other hydraulic breaker repair parts.

For Daemo DMB Standard Series bushing sets, we can support model confirmation before production or shipment. If the customer is not sure about the correct item, we can help check by breaker model, chisel diameter, old bush dimensions, photos, drawings, or samples. This helps reduce wrong orders and improves purchasing efficiency.

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

Applications

The Daemo DMB Standard Series inner bush, outer bush, and thrust ring are widely used in:

• Hydraulic breaker front head repair
• Excavator rock breaker maintenance
• Chisel guide system replacement
• Demolition hammer service
• Quarry and mining breaker repair
• Road construction breaker maintenance
• Hydraulic hammer rebuild projects
• Spare parts stock for repair workshops and distributors

Parameter Table

FAQ

Q1: Are these parts original Daemo?
No. These are aftermarket replacement inner bushes, outer bushes, and thrust rings compatible with Daemo DMB Standard Series hydraulic breakers. The brand and model names are used only for compatibility reference.

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

Q3: When should I replace the bushings?
If the chisel shakes too much, the bush inner diameter is worn, the breaker has weak impact, the retaining pins wear quickly, or the front head shows abnormal wear, the bushings should be inspected and replaced if necessary.

Q4: What does the thrust ring do?
The thrust ring helps with positioning and support inside the breaker tool system. It reduces direct stress and helps the chisel and bushing system work more smoothly.

Q5: How do I confirm the correct bushing set?
You can provide the breaker model, chisel diameter, inner bush size, outer bush size, thrust ring size, old sample photos, drawings, or part numbers. We can help check before production or shipment.

Q6: Can I order bushings together with other breaker parts?
Yes. Inner bushes, outer bushes, and thrust rings can be supplied together with chisels, pistons, seal kits, diaphragms, through bolts, cylinders, front heads, and other hydraulic breaker spare parts.