The Next Generation of 2 Stage Helical-Bevel Design
from NORD Drivesystems

The next generation of premium efficient gearbox from NORD Drivesystems has been released for the North American market. The 2-stage helical-bevel design, referred to as the 92.1 and 93.1 series, offers high-performance, up to 97% efficiency and a 60% increase in torque to weight ratio over the previous series. Both series are available in five gear case sizes and are characterized by an open, smooth, self-draining outer surface.

Designed using FEM (Finite Element Modeling Technology), this high-strength aluminum alloy housing is manufactured using NORD's UNICASE™ Design.

The UNICASE™ design consists of a one-piece housing where bores and mounting faces are machined in one step, producing precise tolerances that ensure accurate positioning of gear teeth, bearings and seals. Internal reinforcements inside the gear case increase the strength and rigidity of the gearbox, resulting in a high-strength housing. This, in turn, provides for larger, high-capacity output bearings, increased overhung load capacity and increased hollow bore capacity.

By NORD offering a leak-free design, longer gear and bearing life, quiet operation and high output torque capabilities, the customer benefits from high efficiency, low maintenance and a long service life.

Providing exceptional modularity and adaptability for all mounting positions, numerous possibilities exist for input, output and motor options. Input and output options are stocked at the factory to guarantee quick-shipment upon order. Available with either a NEMA or IEC input, a NORD motor or brake motor, the 92.1 and 93.1 are well suited for applications in the conveyor industry, material handling, car wash, and the food & beverage industry, including wash down environments.

The 92.1 series, easily identified by its high-strength lightweight design, is a universal housing offering foot, face (B14) and shaft mount as standard. An optional B5 mount is available. The 92.1 series is cost effective when compared to the 93.1 and is ideal for cooling, due to its large surface area.

The 93.1 series is characterized by the closed design and comes as shaft and flange mount (B14) as standard. Optional drilled and tapped holes can be provided for foot mount requirements. In addition, an optional through-bolt, B5-flange is readily available. Because there are no cavities to this design, NSD tupH surface conversion system is available.

As the world continues to strive for increased efficiency, the new 92.1 and 93.1 units are the answer. While a typical worm gear type drive may be only 70% efficient, the 97% efficiency of the 92.1/93.1 series are truly the premium efficient gearbox. Dramatic energy savings and a much lower cost of ownership are accomplished which, in turn, improves the bottom line. While some manufacturers in the power transmission industry claim an improved bevel design but attach a lesser efficient hypoid gear stage, others sell the customer a high efficient motor but attach an inefficient worm gear drive. NORD's gear cutting technology allows for the production of gear sets with a higher maximum ratio per stage than many other speed reducer manufacturers. This allows for a true helical-bevel, double reduction gear unit with a maximum ratio of 70:1. With a company-wide focus on design, innovation and a superior product, customers and end users around the world rely on NORD for performance, efficiency and superior dependability.

NORD was founded in 1965 to develop, produce, and market drive technology. NORD provides a wide range of products to meet your needs with gearboxes ranging in torque ratings from 90 lb in to 2,200,000 lb in, and electric motors rating in power from 1/6 hp to 250 hp. In addition, the product line consists of high-performance AC Vector Drives and AC Drives for panel mount or distributed mount.

Source: NORD Gear Corporation

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