Precision Dynamic Balancing for Rotating Assemblies

Balancing Services & Capabilities | Sterling Industries

Imbalance in rotating components leads to vibration, noise, premature bearing failure, and reduced system performance. At Sterling Industries, we provide high-precision dynamic balancing services as part of our machining and assembly workflows, ensuring every part we deliver operates reliably, smoothly, and safely. Using dedicated balancing equipment — including HVR 150 and HVR 300 machines — we balance a wide range of powertrain, engine, and rotating components to exacting industry specifications.

Automotive OEM & Aftermarket
Powertrain & Transmission
Industrial Pumps, Fans, and Drives
Off-Highway Equipment
Brake, Pulley & Clutch Systems

Feature

Specification / Details

Machines Used
HVR 150 & HVR 300 Horizontal Dynamic Balancing Systems
Component Weight Range
Up to 150 lbs (HVR 150), Up to 300 lbs (HVR 300)
Max Diameter
Up to 24” OD typical
Unbalance Detection
ISO 1940-1 Compliant, multiple correction planes supported
Balance Correction Types
Drilling, milling, grinding, or weight adjustment
Repeatability
Up to 0.1 gram-mm, depending on geometry
Part Types Supported
Shafts, pulleys, flywheels, flexplates, couplings, brake rotors, fans

🔩 Components We Balance (Catalog)

Sterling offers balancing as a standalone service or integrated into full part machining/assembly. Below are some of the most common components we balance:

Component Type

Description

Facility

Balanced Pulleys
Used in serpentine belt systems and crank-driven assemblies
Sterling North
Flywheel Housings
Balanced after machining and bore alignment
Sterling North
Flexplate Assemblies
Balanced with crank adapter or independently
Sterling North
Belt Tensioners
Balanced to reduce NVH in automotive accessory drives
Sterling North
Brake Rotors / Hubs
Precision-balanced to avoid brake shudder or vibration
Sterling South
Pump Rotors / Fans
Balanced for vibration-sensitive hydraulic or pneumatic applications
Both Facilities

🧠 Benefits of Balancing with Sterling

Built-In Process – Balancing integrated directly into machining and inspection workflow

Speed & Precision – Performed in-house with no outsourcing or delay

Customization – Component-specific correction planes and balancing tolerances

Engineering Support – DFM feedback and unbalance simulation early in part design

Data Logging – Digital tracking of correction values and runout data (available on request)

🧰 Balancing Process Flow

Component Review – Weight, geometry, tolerance, and material input

Initial Setup – Mount on HVR balancing system with appropriate fixtures

First Run & Measurement – Identify imbalance vector and plane

Correction Operation – Via drilling, material removal, or mass addition

Final Validation – Confirm within spec; digital report option available

Integration – Part proceeds to assembly, coating, or final inspection

🎯 Ideal Applications for Balancing

Crankshaft to flywheel assemblies

Serpentine and accessory drive pulleys

Engine dampers, harmonic balancers

Rotor & stator interfaces

Precision hydraulic couplers

High-speed rotating prototypes

🛡️ Quality & Compliance

ISO 9001:2015 Certified

Balance standards per ISO 1940-1

Optional digital reporting and traceability

Inspection by Dmis CMM, OGP comparator after balancing

Program Style

Volume

Facility

Prototype Only
1–5 parts
One-time balancing service or as add-on
Pre-Production
10–250 units
For R&D and validation runs
Ongoing Production
500–3,000+ units
Integrated with machining and assembly
Standalone Service
Custom
We balance customer-supplied parts

Travis Watson

Travis Watson is a results-driven business executive with a strong background in strategic growth, operational excellence, and servant leadership. He has led engineering and manufacturing teams across industries such as aerospace, clean energy, and high-performance vehicles, delivering significant improvements in performance, sales, and quality systems. With experience in roles ranging from Account Manager, Plant Manager to Director of Sales and Operations, Travis has overseen ERP implementations, contract negotiations, and cross-functional team development. His leadership has consistently driven efficiency, employee engagement, and profitability. Travis holds dual Bachelor of Science degrees in Marketing and Distribution Management from Indiana University’s Kelley School of Business. He is a Six Sigma Green Belt, CAPM certified, and holds a CPIM designation. Known for developing people and driving strategic execution, he has been a key contributor to multiple high-performing teams.

Joe Johnson

Joe is a highly accomplished engineering and business leader with decades of experience in mechanical engineering, manufacturing, aerospace, and business development. His career began at Delta Faucet Co., where he honed his skills before moving on to Cummins Engine Co. as a Fuel Systems Product Engineer. He further advanced his expertise as an afterburner specialist for Pratt & Whitney Aircraft.

As a seasoned entrepreneur, Joe co-founded ReGin Manufacturing, successfully growing the company into a $10 million enterprise before its acquisition. He later served as the Engineering Manager at Advance Aero Inc..

Recently, Joe transitioned from his role as Director of Operations at Paramount Industrial and Sterling Industries to become the Director of Business Development and Engineering. In this role he is focused on supporting strategic growth and leveraging his extensive background to drive innovation and success in the industry.

Joe Hetzer

Joe Hetzer brings over three decades of extensive experience in the manufacturing sector, with a specialized focus on the aerospace and automotive industries. Throughout his career, Joe has demonstrated a profound commitment to engineering and manufacturing excellence, making significant contributions to various projects and initiatives.

As a team builder, Joe employs a servant leadership approach, fostering an environment where collaboration and growth are paramount. His ability to inspire and empower teams has made him a respected leader in his field, driving innovation and operational improvements.
A recognized change agent, Joe is dedicated to maximizing productivity and efficiency within organizations. His strategic mindset and hands-on experience enable him to implement effective processes that not only enhance performance but also promote sustainability in manufacturing practices.

With a passion for developing talent and a keen eye for industry trends, Joe Hetzer continues to make a meaningful impact in the manufacturing landscape, ensuring that teams are well-equipped to meet the challenges of today and tomorrow.

Peter C. Ariens

Peter C. Ariens is the Chief Executive Officer of NuMA Group, Inc., a private holding company engaged in the automotive, aerospace, defense, recreational, and heavy-duty industries. Under his leadership, NuMA encompasses several companies that manufacture and distribute critical components for some of the world's largest enterprises, with four manufacturing facilities located in Indiana.Before his role at NuMA Group, Peter served as President of Stens Corporation for 18 years, where he led the international parts manufacturing and distribution company until its acquisition by private equity in 2016.In addition to his executive role at NuMA, Peter actively contributes to various for-profit and non-profit boards, including:Two Ladders, Tell City, Indiana
South Central Inc., Evansville, Indiana
Toolsey, Inc., Indianapolis
He is also a member of professional organizations such as Vistage International and the Alliance of Indiana, affiliated with the IU Kelley School of Business. Previously, Peter held the position of Treasurer on the Trieste board.
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Shelia Rossmann

Shelia Rossmann is the Owner and President of Sterling Industries, Inc. and Paramount Industrial, Inc., where she has established herself as an accomplished and results-oriented businesswoman in the manufacturing sector. As a Senior Manufacturing Executive, Shelia leads her woman-owned businesses with a commitment to excellence and innovation.
Her remarkable achievements in the industry were recognized when she won the prestigious Entrepreneur of the Year award in 2013 for Manufacturing in Michigan and North West Ohio, presented by Ernst & Young. This accolade highlights her dedication to driving growth and operational success in her companies, making significant contributions to the manufacturing landscape.
Shelia’s leadership continues to inspire others in the industry, showcasing the impact of women in business and the importance of resilience and strategic vision in achieving success.

Rossier Way, Pontypool

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