3222318911 – 3222 3189 11 ARM ROC ATLAS COPCO

The 3222318911 ARM ROC ATLAS COPCO (also searched as 3222 3189 11 ARM ATLAS COPCO) is a structurally engineered, high-strength mechanical arm used in the central assembly of Atlas Copco ROC drilling rigs. This component plays a critical role in stabilizing, positioning, aligning, and supporting interconnected systems within the rock drill’s feed, rotation unit, and rail assembly. As one of the load-bearing and motion-guiding elements, the 3222318911 ARM ROC ATLAS COPCO ensures precision, rigidity, and smooth mechanical movement throughout drilling operations in construction, mining, quarrying, and tunneling environments.

Manufactured through advanced machining, heat-treatment, and dimensional stabilization processes, the 3222318911 ARM ROC maintains structural integrity under continuous vibration, high torque, impact energy, and abrasive dust exposure. Because the arm influences alignment accuracy and depth-control consistency, its dimensional tolerance and material strength directly affect the drill’s penetration efficiency, bit life, and feed smoothness.

3GEN Export supplies this ARM ROC as an OEM-grade component, supporting global drilling operations with consistent quality standards and delivery within 5 working days worldwide.

Functional Role of the 3222 3189 11 ARM ROC ATLAS COPCO

The 3222 3189 11 ARM ROC ATLAS COPCO functions as a structural connector between multiple mechanical sub-assemblies of a drilling rig. In most ROC platforms, it is part of the:

• Feed assembly support structure

• Sliding/guide alignment system

• Rotary head positional stabilizer

• Motion-transfer bracket system

• Load-distribution framework

Together, these functions allow the drilling machine to maintain drilling accuracy, rigidity, and predictable axial movement across different geological materials.

Primary Functional Roles Include:

1. Structural Load Support

The arm withstands axial and lateral forces generated by:

• Feed movement

• Rotary torque

• Percussive drilling vibrations

• Bit thrust pressure

Its robust single-block structure absorbs and distributes these loads without deformation.

2. Alignment and Guiding

Precision-machined channels and cutouts guide mechanical components along a controlled linear path. This maintains:

• Smooth feed motion

• Reduced vibration

• Accurate drill hole trajectory

Misalignment at this point would lead to premature wear, rod deviation, and mechanical imbalance.

3. Housing and Fastening Reinforcement

The arm includes integrated mounting holes, threaded inserts, and load pockets that:

• Anchor auxiliary brackets

• Keep hardware securely aligned

• Prevent stress fractures on surrounding parts

4. Vibration Dampening Support

Its mass, geometry, and mounting position help absorb vibrational energy from the hydraulic drifter, extending lifespan of connected components.

Material Composition and Manufacturing Precision

Because its role is structural, the 3222318911 ARM ROC ATLAS COPCO is manufactured from high-strength alloy steel or hardened carbon steel, treated through thermal stabilization to enhance durability.

Manufacturing Steps Include:

• CNC machining

• Surface milling

• Dimensional laser measurement

• Heat treatment

• Stress relief process

• Anti-corrosion finishing

Resulting Material Properties:

• High tensile strength

• Resistance to torsional deformation

• Excellent fatigue resistance

• Reduced surface wear in abrasive environments

• Dimensional stability under temperature variations

These characteristics are essential for drilling environments where dust, water, high-pressure flushing, and repetitive motion create harsh operating conditions.

Technical Specifications of the 3222 3189 11 ARM ATLAS COPCO

(The following specifications are representative based on typical Atlas Copco ROC arm designs. Exact dimensional values may vary depending on the drill model.)

General Characteristics:

• Component Type: Structural arm / feed support element

• Part Name: ARM ROC

• Part Number: 3222318911

• Alternative PN: 3222 3189 11

• Machine Category: Rock Drilling – Feed/Guide/Arm Mechanism

• Construction: Solid machined alloy steel

• Surface: Precision-machined, deburred, corrosion-resistant

Estimated Weight:

8.5 – 11.4 KG (average value based on full steel mass of similar ROC arms)

Mechanical Features:

• Threaded mounting ports

• Guide-axis long slot for alignment

• Reinforced edges for load distribution

• High-impact resistance

• Zero-flex structural design

• Multi-port integration for optimal bracket compatibility

Performance Attributes:

• Maintains perfect feed straightness

• Reduces vibration transfer

• Enhances drilling accuracy

• Withstands continuous dynamic loads

• Designed for extreme-duty drilling environments

Compatible Atlas Copco Drilling Models

The 3222318911 ARM ROC ATLAS COPCO is used across several ROC-series drilling machines. Based on its geometry and application, it is typically compatible with:

Compatible Models Include:

• Atlas Copco ROC D7

• Atlas Copco ROC D9

• Atlas Copco ROC D3

• Atlas Copco ROC F6

• Atlas Copco ROC L6 Series

• Atlas Copco PowerROC Variants

(Exact compatibility may differ based on machine configuration. 3GEN Export can confirm compatibility using your machine’s serial number.)

These rigs rely heavily on the structural precision of the arm to maintain drilling stability, making this part critical to performance.

Operational Importance of the ARM ROC in Drilling Systems

1. Feed System Efficiency

Wrong positioning or faulty movement affects:

• Penetration rate

• Bit pressure control

• Feed parallelism

• Rod life expectancy

This arm ensures straight-line motion under high loads.

2. Rotary Head Stability

Because the rotary head produces rotational torque, it must be held in exact alignment.
The arm supports:

• Torque balance

• Rotary head offset accuracy

• Wear reduction across guide rails

3. Impact Energy Translation

Shock waves from the drifter must travel in a controlled path.
This arm stabilizes the energy transfer.

4. Structural Safety

A broken or worn arm can cause:

• Slanted holes

• Vibration damage to hydraulics

• Misalignment of feed rails

• Safety hazards to operators

Installation Guidelines

(General instructions – always follow your machine’s service manual for exact steps.)

1. Inspect the Mounting Surface

Before installation:

• Clean all attachment points

• Remove old debris and damaged hardware

• Check for cracks or weld failures

2. Confirm Alignment

Align the new arm with the feed frame and rotary mount points.

3. Tighten in the Correct Sequence

Use manufacturer torque settings to ensure:

• Even pressure distribution

• Zero warping

• Maximum structural integrity

4. Lubrication and Corrosion Protection

Lubricate mounting bolts and add corrosion inhibitors if required.

Maintenance Recommendations

Routine Inspections (After 250 – 500 hours):

• Check for cracks

• Inspect thread integrity

• Ensure mounting bolts remain torqued

• Measure alignment drift

• Look for signs of metal fatigue

Recommended Replacement Interval:

Heavy-use drilling operations typically replace support arms every:

• 2,500 – 4,500 operating hours

Why Choose 3GEN Export for the 3222318911 ARM ROC ATLAS COPCO?

3GEN Export specializes in supplying high-quality, OEM-grade parts for heavy machinery, ensuring reliability in global mining, drilling, and construction operations.

Our Advantages:

• OEM-grade manufacturing

• Global shipping within 5 working days

• High stock availability

• Expert compatibility assistance

• Proven track record with drilling companies worldwide

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.