51669984, 516 699 84 LINER BACK INGERSOLL RAND

The 51669984, 516 699 84 LINER BACK INGERSOLL RAND is a precision-engineered structural component designed for heavy-duty rock drilling systems where impact energy, axial alignment, and vibration control must remain perfectly balanced. This liner back plays a critical role in maintaining internal geometry inside the drifter housing, supporting adjacent wear parts while absorbing repetitive percussion loads generated during drilling operations.

Manufactured to tight dimensional tolerances, the 51669984, 516 699 84 LINER BACK INGERSOLL RAND ensures stable seating of internal assemblies, minimizes micro-movement under load, and protects surrounding components from premature fatigue. In high-energy mining, quarrying, and tunneling environments, liner back integrity directly affects drilling efficiency, tool life, and machine uptime.

As 3GEN Export, we supply this part as an OEM-grade replacement and deliver worldwide within 5 working days, supporting contractors and maintenance teams who cannot afford extended downtime.

What Is the Function of a Liner Back in Rock Drilling Systems?

Inside hydraulic rock drills and drifters, the liner back serves as a load-bearing interface between moving internal components and the outer housing. Its responsibilities include:

• Maintaining axial alignment of internal assemblies

• Distributing impact forces evenly across the housing

• Preventing metal-to-metal deformation under repeated percussion

• Supporting vibration damping structures

• Preserving dimensional stability during high-temperature operation

The 51669984, 516 699 84 LINER BACK INGERSOLL RAND is specifically designed to handle continuous cyclic stress while preserving concentricity throughout the drilling cycle.

Any deviation in liner back geometry can lead to:

• accelerated wear of pistons and bushings

• misalignment of impact components

• pressure losses

• vibration amplification

• premature failure of adjacent parts

That is why selecting a correctly machined liner back is essential for long-term machine reliability.

Manufacturing Characteristics of 51669984, 516 699 84 LINER BACK INGERSOLL RAND

This liner back is produced from high-strength alloy steel and finished with precision CNC machining to ensure consistent wall thickness, accurate threading, and smooth internal surfaces.

Key manufacturing features include:

• Heat-treated body for impact resistance

• Precision-cut external threads for secure seating

• Optimized shoulder geometry for load distribution

• Fine surface finish to reduce frictional wear

• Controlled hardness profile to prevent cracking under shock loads

The result is a component capable of withstanding thousands of percussion cycles per hour without dimensional drift.

Technical Specifications (Typical)

While exact values may vary slightly depending on production batch, standard specifications for the 51669984, 516 699 84 LINER BACK INGERSOLL RAND typically include:

• Component type: Liner Back / Rear Liner

• Material: High-strength alloy steel

• Manufacturing method: CNC machined + heat treated

• Surface finish: Industrial precision ground

• Installation type: Threaded / press-fit hybrid design

• Function: Structural support + vibration distribution

Approximate Weight

• Estimated weight: 6.5 – 7.5 kg

(Final weight may vary depending on production tolerance.)

Compatible INGERSOLL RAND Rock Drill Models

The 51669984, 516 699 84 LINER BACK INGERSOLL RAND is commonly used in multiple hydraulic drifter and rock drill assemblies produced by Ingersoll Rand, including (but not limited to):

YH80

• HL series hydraulic drifters

• HC percussion units

• Selected surface drilling rigs

• Underground mining drill systems

• Heavy-duty crawler drill platforms

Because configurations can differ by production year and application type, we strongly recommend confirming compatibility using your machine model or serial number. Our technical team at 3GEN Export supports cross-reference verification before shipment.

Signs That Your Liner Back Requires Replacement

In operational environments, liner backs gradually degrade due to vibration and impact fatigue. Typical warning signs include:

• irregular percussion sound

• internal looseness felt during drilling

• accelerated wear of pistons or bushings

• visible scoring on mating components

• loss of drilling efficiency

• increased vibration transmitted to the boom

Replacing the liner back at the correct service interval protects your entire percussion system.

Installation Guidelines

Professional installation is recommended.

General best practices include:

• Clean housing bore thoroughly before fitting

• Apply approved assembly lubricant to threads

• Torque according to machine specifications

• Inspect mating surfaces for burrs or scoring

• Verify axial alignment after installation

Correct installation ensures the 51669984, 516 699 84 LINER BACK INGERSOLL RAND performs its load-distribution role effectively.

Why Source from 3GEN Export?

3GEN Export operates as a global OEM supplier of heavy machinery spare parts, supporting mining, construction, and drilling operations worldwide.

When ordering this liner back from us, you receive:

• OEM-grade manufacturing quality

• Global shipping within 5 working days

• Professional technical support

• Secure packaging for international transport

• Direct supply without unnecessary intermediaries

Our logistics network allows fast dispatch from multiple warehouses, ensuring your maintenance schedule stays on track.

Applications Across Industries

This liner back is widely used in:

• Surface mining operations

• Underground tunneling projects

• Quarry production lines

• Infrastructure drilling

• Foundation and piling works

Anywhere high-impact rock drilling is required, the 51669984, 516 699 84 LINER BACK INGERSOLL RAND plays a silent but critical role in system stability.

Long-Term Value of Using Correct Liner Back Components

Using the proper liner back protects:

• pistons

• guide bushings

• housings

• seals

• vibration dampers

A single incorrectly machined liner back can compromise the entire percussion system. Investing in a correctly manufactured component reduces maintenance cycles and increases total machine lifespan.

Ordering Information

Product Name: 51669984, 516 699 84 LINER BACK INGERSOLL RAND
Condition: New OEM-grade replacement
Supplier: 3GEN Export
Global Delivery: Within 5 working days

Bulk orders, technical drawings, and compatibility checks are available on request.

Manufactured in Turkey, these products are made using the latest technologies and built to meet the highest international standards. Each machine is a high-quality copy of the original, ensuring durability, precision, and performance that you can rely on for modern construction and metalworking projects.