51325546 / 513 255 46 SHAFT GEAR INGERSOLL RAND

The 51325546 / 513 255 46 shaft gear is a precision-machined drivetrain component designed for heavy-duty rock drilling systems. Inside hydraulic and pneumatic drifters, shaft gears play a vital role in transferring rotational energy from the drive unit to the percussion and rotation assemblies. Any imbalance or dimensional inaccuracy at this point directly affects drilling efficiency, vibration levels, and overall equipment lifespan.

Supplied globally by 3GEN Export as an OEM-grade replacement, this shaft gear is manufactured to tight tolerances for stable torque transmission, smooth meshing, and long operational life in demanding mining and quarry environments. It is commonly installed in selected rock drill configurations produced by Ingersoll Rand.

The Function of a Shaft Gear in Rock Drilling Equipment

Within a drifter or rock drill, rotational force generated by the motor must be transferred accurately to the drilling mechanism. This is where the shaft gear becomes critical.

The 51325546 / 513 255 46 shaft gear is responsible for:

• Delivering consistent rotational torque

• Maintaining synchronized movement between internal assemblies

• Supporting stable bit rotation under heavy load

• Reducing backlash inside the transmission system

• Helping control vibration during continuous drilling cycles

Because it operates under constant mechanical stress, the shaft gear must maintain exact tooth geometry and surface hardness. Even small deviations can lead to noise, accelerated wear, or misalignment across the drivetrain.

Engineering Design and Material Composition

This component is produced from high-strength alloy steel selected for fatigue resistance and surface durability. Each unit undergoes controlled machining and finishing processes to ensure reliable engagement with mating gears.

Heat Treatment

The gear body is thermally processed to achieve:

• High surface hardness on gear teeth

• Strong internal core for shock absorption

• Resistance to micro-cracking under repetitive torque loads

Precision Gear Cutting

Advanced cutting and profiling methods ensure:

• Accurate tooth spacing

• Uniform load distribution

• Reduced friction during rotation

• Stable engagement at high operating speeds

Surface Finishing

Critical contact areas are finished to minimize friction and heat buildup, helping extend service life for both the shaft gear and surrounding drivetrain components.

Typical Technical Overview

While exact dimensions may vary by production batch, the 51325546 / 513 255 46 shaft gear generally features:

• Component type: Transmission shaft gear

• Material: Hardened alloy steel

• Manufacturing standard: OEM production grade

• Application: Internal rotation system of rock drills

• Operating environment: High-load, high-torque drilling assemblies

Approximate Weight

Estimated weight: 6.5 – 7.5 kg

(Final weight may vary slightly depending on machining tolerances.)

Compatible INGERSOLL RAND Rock Drill Models

The 51325546 / 513 255 46 shaft gear is commonly used in selected INGERSOLL RAND drifter and drilling platforms, including configurations found in:

YH95, YH100, YH135

• HL series hydraulic drifters

• Underground tunneling drill rigs

• Surface crawler drilling machines

• Quarry drilling systems

• Medium to heavy percussion rock drills

If you are unsure whether this part matches your specific machine, 3GEN Export can confirm compatibility using your equipment model or serial number.

Performance Benefits in Daily Operation

Installing a properly manufactured shaft gear directly impacts drilling quality and equipment reliability.

With the 51325546 / 513 255 46 shaft gear, operators benefit from:

Stable Torque Transfer

Precision tooth geometry ensures smooth rotation and consistent power delivery.

Reduced Mechanical Noise

Accurate meshing lowers vibration and operational noise inside the drivetrain.

Extended Component Life

Balanced load distribution reduces wear on bearings, housings, and adjacent gears.

Predictable Maintenance Cycles

High material quality slows fatigue, helping operators plan servicing intervals more effectively.

Common Signs of Shaft Gear Wear

Over time, drivetrain components are exposed to extreme stress. Typical symptoms indicating replacement may be needed include:

• Irregular rotation or jerking motion

• Increased vibration during drilling

• Metallic noise from the gearbox area

• Visible tooth wear or surface pitting

• Reduced drilling efficiency

Replacing worn parts early helps prevent secondary damage to shafts, bearings, and housings.

Installation Recommendations

For best results during installation:

• Inspect mating gears for abnormal wear

• Verify shaft alignment before assembly

• Apply appropriate lubrication to gear teeth

• Replace worn seals or bearings at the same time

• Perform a low-load test run after installation

Correct fitting significantly improves operational stability and long-term performance.

Why Source from 3GEN Export

3GEN Export supplies the 51325546 / 513 255 46 shaft gear as an OEM-grade replacement component, manufactured to closely match original performance standards.

By working with us, you receive:

• OEM-level production quality

• Worldwide delivery within 5 working days

• Secure export packaging

• Technical support for part verification

• Reliable availability for fleet operators and distributors

We do not market products as factory originals. Instead, we focus on delivering high-quality OEM replacements designed for professional drilling applications.

Global Logistics and Packaging

Each shaft gear is individually protected against corrosion and impact during transport. Orders are dispatched via international express logistics networks, ensuring fast and secure delivery to workshops, mining sites, and distribution centers across Europe, the Middle East, Africa, Asia, and the Americas.

Long-Term Operational Value

Using a properly engineered shaft gear contributes directly to:

• Lower total maintenance costs

• Reduced unexpected downtime

• Improved drivetrain efficiency

• Longer service life of connected components

• More consistent drilling performance

When rotational elements operate smoothly, the entire rock drilling system benefits from higher productivity and reliability.

Summary

The 51325546 / 513 255 46 shaft gear is a critical drivetrain component inside INGERSOLL RAND rock drilling systems. Built for high-torque environments and supplied by 3GEN Export as an OEM-grade replacement, it supports stable rotation, reduced vibration, and dependable long-term operation.

With worldwide shipping in just 5 working days, 3GEN Export helps keep your drilling equipment running efficiently wherever your project is located.

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.