The Atlas Copco DHR 45 H-2 Rotation Unit, identified by part number 4350 2581 45, is a crucial component in the drilling industry, known for its robust performance and exceptional reliability. Rockser Inc., a leading manufacturer of high-quality spare parts, ensures that every component they produce for this rotation unit matches or exceeds the original specifications. With a global distribution network, Rockser Inc. supplies these essential parts to customers worldwide, ensuring the seamless operation of drilling equipment.

Overview of the Atlas Copco DHR 45 H-2 Rotation Unit

The DHR 45 H-2 Rotation Unit is a key part of Atlas Copco’s extensive range of drilling solutions. Engineered to deliver high torque and efficient rotation speeds, this unit is essential for a variety of heavy-duty drilling applications. It effectively converts hydraulic energy into mechanical rotation, maintaining the productivity and precision of drilling operations.

Key Features:

  1. High Performance: Designed for optimal torque and rotation speed, ensuring efficient and effective drilling operations.
  2. Durability: Constructed with high-quality materials to withstand demanding conditions and prolonged usage.
  3. Precision Engineering: Ensures accurate and reliable performance, which is vital for maintaining drilling precision.
  4. Ease of Maintenance: Features a design that facilitates straightforward maintenance, reducing downtime and operational costs.

Rockser Inc. – Your Trusted Supplier for Atlas Copco DHR 45 H-2 Spare Parts

Rockser Inc. is a reputable supplier of high-quality spare parts for Atlas Copco equipment, including the DHR 45 H-2 Rotation Unit. The company’s dedication to quality and customer satisfaction is reflected in its comprehensive range of products, designed to provide seamless compatibility and superior performance.

Why Choose Rockser Inc.?

  1. Quality Assurance: All spare parts from Rockser Inc. undergo stringent quality control measures to ensure they meet or exceed the original specifications of Atlas Copco parts.
  2. Global Distribution: With an extensive distribution network, Rockser Inc. supplies parts to customers worldwide, ensuring quick delivery and support.
  3. Industry Expertise: Combining years of industry experience with technical expertise, Rockser Inc. produces reliable and efficient spare parts.
  4. Customer Support: Rockser Inc. offers exceptional customer service, providing assistance and guidance to help clients select the right parts and maintain their equipment effectively.

Detailed Specifications of the Atlas Copco DHR 45 H-2 Rotation Unit

The Atlas Copco DHR 45 H-2 Rotation Unit is meticulously designed to meet the rigorous demands of industrial drilling applications. Here are some detailed specifications highlighting its capabilities:

  • Torque Output: Engineered to provide high torque, suitable for heavy-duty drilling tasks.
  • Rotation Speed: Designed for variable speed control, allowing adaptation to different drilling requirements.
  • Material Construction: Constructed with premium materials to ensure durability and long service life.
  • Compatibility: Designed for seamless integration with various Atlas Copco drilling rigs and equipment.
  • Maintenance: Features a user-friendly design that facilitates quick and efficient maintenance and part replacements.

Rockser Inc.’s Commitment to Quality and Innovation

Rockser Inc. is committed to maintaining the highest standards of quality and innovation in the production of spare parts for the Atlas Copco DHR 45 H-2 Rotation Unit. The company employs advanced manufacturing techniques and rigorous testing protocols to ensure every part meets the demanding requirements of industrial drilling operations.

Innovative Manufacturing Processes:

  • Precision Machining: Utilizes state-of-the-art CNC machining to achieve exacting tolerances and superior part quality.
  • Quality Control: Implements comprehensive quality control measures, including material testing and performance validation.
  • Sustainable Practices: Adopts environmentally friendly manufacturing practices to minimize environmental impact and promote sustainability.

Global Distribution and Customer Support

Rockser Inc. prides itself on its ability to deliver high-quality spare parts to customers worldwide. The company’s global distribution network ensures that parts are readily available, reducing downtime and maintaining operational efficiency for drilling operations across various industries.

Comprehensive Customer Support:

  • Technical Assistance: Provides expert technical support to help customers troubleshoot issues and optimize equipment performance.
  • After-Sales Service: Offers reliable after-sales service, including part replacement and maintenance guidance.
  • Training and Resources: Provides training resources to help customers understand the proper use and maintenance of their drilling equipment.


The Atlas Copco DHR 45 H-2 Rotation Unit (Part Number 4350 2581 45) is a vital component for efficient and reliable drilling operations. Rockser Inc. stands out as a trusted provider of high-quality spare parts for this unit, offering products that match or exceed the original specifications. With a commitment to quality, global distribution capabilities, and exceptional customer support, Rockser Inc. ensures that drilling operations around the world can maintain peak performance with minimal downtime.

For more information on Rockser Inc.’s range of spare parts for the Atlas Copco DHR 45 H-2 Rotation Unit, or to place an order, please visit their website or contact their customer service team.

Absolutely, here’s an SEO-compatible and detailed article about the Atlas Copco DHR 45 H-2 Rotation Unit (part number 4350 2581 45) with a focus on Rockser Inc. as a supplier of OE equivalent spare parts:

Unleash Peak Performance in Down-the-Hole Drilling: The Atlas Copco DHR 45 H-2 Rotation Unit with Rockser Inc.’s OE Equivalent Parts

Dominate demanding Down-the-Hole (DTH) drilling projects with the powerful Atlas Copco DHR 45 H-2 Rotation Unit and Rockser Inc.’s premium replacement parts! This hydraulically driven powerhouse boasts exceptional performance and versatility, making it a mainstay for various high-power drilling applications. This comprehensive guide explores the DHR 45 H-2 Rotation Unit, the importance of using high-quality spare parts, and why Rockser Inc. is your trusted partner for keeping your drilling operations running smoothly worldwide.

The Atlas Copco DHR 45 H-2 Rotation Unit: A Hydraulic Powerhouse for DTH Drilling

The DHR 45 H-2 Rotation Unit is a robust and hydraulically driven rotary unit specifically designed to excel in demanding DTH drilling applications:

  • Quarrying: Production drilling for large diameter blast holes in exceptionally hard rock formations encountered in quarrying operations.
  • Construction: Foundation drilling for super deep structures or those requiring exceptionally wide bases, anchor hole drilling for extremely deep installations in infrastructure projects, and utility hole drilling in challenging ground conditions.
  • Surface Mining: Production drilling and pre-splitting applications in large-scale mining operations, particularly those requiring efficient penetration in the hardest rock.

DHR 45 H-2 Rotation Unit Key Features:

  • Hydraulic Power: This unit utilizes a hydraulic motor for consistent and powerful operation, allowing for easier integration into various drilling rigs designed for heavy-duty applications.
  • High Torque and Speed: The DHR 45 H-2 delivers impressive torque (2200 Nm) and a capable speed (80 rpm) for efficient drilling through the toughest materials, even when working with large diameter holes. This enables faster drilling times and improved project efficiency.
  • Adapter Options: The DHR 45 H-2 offers versatility with two adapter choices:
    • Floating Adapter: Offering some flexibility and improved shock absorption during operation, potentially reducing stress on other components and extending the lifespan of the unit.
    • Fast Adapter: Provides a more rigid connection for applications requiring maximum drilling efficiency and minimal deflection.

Why Use High-Quality Spare Parts for Your DHR 45 H-2 Rotation Unit?

Maintaining peak performance and maximizing the lifespan of your DHR 45 H-2 Rotation Unit relies on using top-tier spare parts. Here’s why opting for lesser quality parts can be detrimental to your DTH drilling operations:

  • Reduced Drilling Efficiency and Productivity: Subpar parts can lead to decreased torque and speed, hindering your ability to drill large diameter holes efficiently, causing significant delays and impacting project budgets.
  • Increased Downtime and Maintenance Costs: Frequent repairs due to failing parts can significantly disrupt your large-scale projects and drive up maintenance costs.
  • Potential Damage to the Rotation Unit: Using incompatible or poorly manufactured parts can cause harm to the unit’s internal components, leading to expensive repairs or even machine failure, causing extreme delays and impacting project budgets.
  • Compromised Safety Standards: Worn-out or defective parts can create safety hazards for operators working with powerful machinery and large-diameter drilling applications.

Rockser Inc.: Providing Original Equipment Equivalent (OE Equivalent) Parts for Your DHR 45 H-2 Rotation Unit

At Rockser Inc., quality is our top priority. That’s why all our DHR 45 H-2 Rotation Unit spare parts are manufactured to be OE equivalent. This signifies that they are:

  • Engineered with the exact specifications and tolerances as the original Atlas Copco parts, ensuring seamless compatibility and optimal performance with your DHR 45 H-2 Rotation Unit.
  • Constructed from premium materials known for exceptional durability and extended service life, keeping your rotation unit operating flawlessly under demanding drilling conditions, even when handling the extreme stress of high-powered drilling in hard rock.
  • Rigorously tested to guarantee functionality and reliability, so you can focus on achieving your drilling goals in large-scale projects with confidence.

Rockser Inc.: Your Global Source for DHR 45 H-2 Rotation Unit Parts

We offer a comprehensive selection of OE equivalent spare parts for your DHR 45 H-2 Rotation Unit, including (but not limited to):

  • Hydraulic Motors
  • Gears
  • Seals
  • Bearings
  • Shafts
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