51669984 / 516 699 84 LINER BACK INGERSOLL RAND

51669984_1 / 516 699 84_1 LINER CYLINDER BACK INGERSOLL RAND

Precision-Engineered Liner Cylinder Back for High-Impact Rock Drilling Applications

The 51669984, 516 699 84 LINER BACK INGERSOLL RAND (also referenced as 51669984_1 / 516 699 84_1 LINER CYLINDER BACK INGERSOLL RAND) is a critical internal component used in heavy-duty rock drilling and hydraulic breaker systems manufactured by Ingersoll Rand.

Designed to support the rear section of the cylinder liner assembly, this part plays a central role in maintaining piston alignment, absorbing axial loads, and ensuring consistent energy transfer during high-frequency percussion cycles. In demanding mining, quarrying, and construction environments, even small tolerances matter — and this liner cylinder back is engineered specifically to withstand extreme pressure, vibration, and thermal stress.

At 3GEN Export, we supply this part as an OEM-grade replacement, manufactured to strict dimensional tolerances and material standards, with worldwide delivery in just 5 working days.

What Does the 51669984 Liner Cylinder Back Do?

Inside rock drills and hydraulic breakers, the liner cylinder back acts as a structural support and sealing interface at the rear of the cylinder liner. It ensures:

• Proper piston guidance
• Stable impact chamber geometry
• Controlled hydraulic flow paths
• Reduced metal-to-metal wear
• Reliable sealing under high pressure

Without a precisely machined liner back, piston movement becomes inconsistent, impact energy drops, and internal components experience accelerated fatigue.

The 51669984 liner cylinder back Ingersoll Rand is therefore essential for maintaining drilling efficiency, protecting surrounding assemblies, and extending overall machine service life.

Key Engineering Characteristics

High-Strength Alloy Construction

Manufactured from heat-treated alloy steel, the 51669984 liner cylinder back Ingersoll Rand delivers exceptional resistance to:

• Impact shock
• Hydraulic pressure spikes
• Surface fatigue
• Micro-cracking
• Deformation under continuous load

The material structure is optimized for both toughness and hardness, allowing the component to absorb repeated percussion forces without dimensional distortion.

Precision CNC Machining

Every sealing groove, threaded section, and bearing surface is CNC-machined to micron-level accuracy. This guarantees:

• Perfect concentricity with piston and liner
• Uniform load distribution
• Leak-free hydraulic performance
• Reduced vibration transfer

This level of machining precision is critical for modern rock drilling systems operating at high frequencies.

Integrated Seal Interfaces

The design incorporates dedicated O-ring and sealing channels to prevent:

• Hydraulic oil leakage
• Pressure loss
• Contaminant ingress
• Internal corrosion

These integrated sealing interfaces make the 516 699 84 liner back Ingersoll Rand suitable for harsh environments including open-pit mining, tunneling, and foundation drilling.

Technical Specifications (Typical)

Product Name
51669984 / 516 699 84 LINER BACK INGERSOLL RAND
51669984_1 / 516 699 84_1 LINER CYLINDER BACK INGERSOLL RAND

Category
Rock drill / hydraulic breaker internal components

Material
Heat-treated alloy steel

Surface Finish
Precision ground and polished

Thread Type
Internal machined thread (model-specific pitch)

Sealing
Integrated O-ring groove

Approximate Weight
8.4 – 9.2 KG (varies slightly by production batch)

Installation Position
Rear section of cylinder liner assembly

Operating Environment
High-pressure hydraulic percussion systems

Compatible Ingersoll Rand Rock Drill Models

The 51669984 liner cylinder back Ingersoll Rand and 51669984_1 liner cylinder back Ingersoll Rand are commonly used across multiple Ingersoll Rand drilling and breaker platforms, including:

YH80

• IR HL Series rock drills
• IR HD Series hydraulic breakers
• Ingersoll Rand surface drill rigs
• Ingersoll Rand crawler drill systems
• Selected IR percussion hammer assemblies

Exact compatibility can vary depending on production year and configuration. For accurate matching, 3GEN Export recommends confirming your machine model or serial number before ordering.

Why Replacing the Liner Cylinder Back Matters

Over time, liner backs are exposed to continuous axial impact, hydraulic pressure cycling, and temperature variation. Common wear symptoms include:

• Loss of impact efficiency
• Internal oil leakage
• Increased vibration
• Piston misalignment
• Premature seal failure

Replacing a worn 516 699 84 liner cylinder back Ingersoll Rand restores proper piston geometry and prevents cascading damage to:

• Pistons
• Cylinders
• Valve assemblies
• Seal kits
• Front heads

Preventive replacement significantly reduces downtime and avoids costly secondary failures.

Installation Guidance

Professional installation is recommended. Typical steps include:

1. Fully depressurize the hydraulic system

2. Remove rear housing and old liner back

3. Clean mating surfaces thoroughly

4. Install new seals and lubricate lightly

5. Insert the 51669984 liner cylinder back Ingersoll Rand

6. Torque to manufacturer specification

7. Reassemble housing and test under low pressure

Always use calibrated tools and follow machine-specific service manuals.

Advantages of Choosing 3GEN Export

At 3GEN Export, we specialize in OEM-grade heavy machinery spare parts for global markets.

When you purchase the 51669984 liner cylinder back Ingersoll Rand from us, you benefit from:

• OEM manufacturing standards
• Strict dimensional quality control
• Global express shipping in 5 working days
• Technical support for part verification
• Professional export packaging
• Worldwide logistics coverage

We do not use “genuine” terminology. Instead, we provide OEM-spec components engineered for performance, durability, and compatibility.

Applications Across Industries

The 51669984_1 liner cylinder back Ingersoll Rand is widely used in:

• Mining operations
• Quarry production lines
• Infrastructure construction
• Tunnel excavation
• Foundation drilling
• Aggregate processing sites

Any environment requiring continuous rock penetration depends on components like this to maintain productivity.

Long-Term Value and Performance

A properly manufactured liner cylinder back directly contributes to:

• Higher drilling efficiency
• Reduced oil consumption
• Lower vibration levels
• Extended piston life
• Improved machine uptime

Investing in a high-quality 516 699 84 liner back Ingersoll Rand protects your equipment and your operating margins.

Conclusion

The 51669984 / 516 699 84 LINER BACK INGERSOLL RAND and 51669984_1 / 516 699 84_1 LINER CYLINDER BACK INGERSOLL RAND are essential structural elements within Ingersoll Rand rock drilling systems. Engineered for strength, precision, and sealing integrity, these parts ensure consistent impact performance under the toughest working conditions.

Supplied by 3GEN Export as an OEM-grade solution, this liner cylinder back is ready for immediate worldwide delivery in just 5 working days.

For reliable operation, reduced downtime, and long-term equipment protection, choose 3GEN Export as your global spare parts partner.

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.