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New Gearbox Sales

New Gearboxes from SUN LUNG GEAR WORKS CO

Established in 1960, SUN LUNG specializes in designing and manufacturing precision gears and gearboxes for plastic machines. SUN LUNG products have always been the quality of the global customer recognition, having distributed more than 50,000 gearboxes in the global market, to more than 30 countries in the world. SUN LUNG is a leader in innovation and energy efficiency. They offer a special processing technique for complex and diversified gear variations and all kinds of gear profile modifications. They are not only a CE and ISO 9001-certified company, but also the members of AGMA (American Gear Manufacturers Association) & TAMI (Taiwan Association of Machinery Industry).

Hard Chrome Solutions has a wide selection of new extruder and industrial gearboxes available, all at competitive prices. We are proud to offer quality equipment from prominent original manufacturers.


Hard Chrome Solutions boasts the most innovative gearbox manufacturing and repair facility in the United States. Our team of German trained engineers and professional staff have decades of experience designing, manufacturing, maintaining and repairing a wide variety of industrial gearboxes.

We listen carefully to each of our customers, and then work tirelessly to provide unparalleled service, support and satisfaction for standard gearboxes as well as custom designs to fill any need.

Hard Chrome Solutions offers an unwavering commitment to excellence and innovation, state of the art design and manufacturing facilities and (most important of all) a team of skilled, dedicated professionals - remarkable people all dedicated to your success.


  • Complete gearbox replacements, parts, repair & rebuild and emergency field service.
  • Sophisticated engineering processes and standards with experience that includes rebuild and repair of more than 1,000 gearboxes from 90 brands
  • Gearbox re-engineering and performance upgrades to maximize both durability and profitabilityv
  • Reverse engineering to meet or exceed original specifications
  • Dependable on-time delivery, every project, every time
  • The leader in gearbox manufacturing with a full range of capacities

Standard Gearboxes:

Our standard gearboxes are guaranteed to meet all requirements for your applications, including gear ratio, coupling size, and hydraulic system parameters.

Manufacturing Services:

  • Carburized and hardened, ground single helical gearing
  • Lead and profile modifications for efficiency and vibration free operation
  • Spherical and cylindrical roller bearings for high efficiency
  • Optimized gear geometry for noise and efficiency
  • Common mounting dimensions to Mark II and Signature Series Units
  • Welded steel housings (on most units)
  • Fan cooling available to increase power ratings
  • Single, double and triple reduction gearboxes
    • Parallel Shaft Gearboxes from 3 – 5000 HP
    • Sizes: 70S – 200S, 70D – 200D, 70T – 200T
    • Ratios: 2.0:1 to 107.17:1

Custom Gearboxes:

Hard Chrome Solutions employs German trained engineers and a team of highly specialized professionals who have undergone extensive training in order to design and build custom gearbox solutions that save you time and money while dramatically increasing your productivity. Our approach minimizes downtime yet produces highly efficient custom solutions that will stand the test of time.

Low Speed, High Torque – Parallel Shaft, Bevel and Planetary:

Medium Speed, High Power – Parallel Shaft, Bevel and Planetary:

High Speed, High Power – Parallel Shaft and Planetary:

Duplicate Custom Gearboxes:

We have catalogued engineering drawings for many existing gearbox systems, and we can reverse engineer as needed. If you have an old gearbox that just keeps on running, we can manufacture a new unit or new interchangeable components. Employing the most modern manufacturing tooling and materials enables us to build a unit that is more efficient and quieter than your existing gearbox.