
The Nord SI Worm Gear Unit SK1SI40 is a modular worm gear unit that covers 5 industry standard center distances ranging from 31mm to 75mm, with a torque capacity range of up to 3,779 pound-inches. This product offers various standard, single-worm, and compound-worm ratios ranging from 5:1 to 10,000:1. The series features a smooth outer surface and independent foot and flange gearboxes, ensuring excellent modularity. This flexibility allows for a variety of input and output mounting options, as well as various output shaft options. The SI worm gear units have a high power density and a compact structure. They are known for their low noise torque transmission. Due to their simple yet effective design, they offer considerable installation space advantages compared to other types of gear units. Our company provides replacement worm gear reducers of the Nord brand, which are of good quality and offered at competitive prices. It is important to note that our products are replacement parts and not original equipment manufacturer (OEM) parts. If you require OEM parts, please contact the original supplier for purchasing.


The compact worm speed reducer offers the following advantages:

When it comes to replacing Nord worm gear units, our products offer several advantages:
If you require original Nord brand gear units, please contact the original supplier for purchasing.

Worm gear reducers and electric motors complement each other, and both play crucial roles in various applications. Our company also offers a wide range of electric motors for sale. These motors are designed to work seamlessly with our worm gear reducers, providing efficient power transmission and reliable performance.

At Raydafon, we specialize in the production of worm gear reducers and have established ourselves as a reputable manufacturer in the market. With over 15 years of experience, we are committed to providing our customers with the highest quality products, competitive prices, and excellent service. Our gearboxes are widely used in various industries such as equipment manufacturing, food processing, car wash systems, packaging, automation, solar energy, and more. We welcome customers to explore our products and contact us for purchasing. Please feel free to reach out to us with any inquiries or custom requirements.

A: Yes, the worm speed reducer can be configured with NEMA, IEC, or solid shaft inputs, providing flexibility for various motor connections.
A: The compact worm speed reducer offers easy assembly and disassembly, precise shaft alignment, vibration-free torque transmission, and protection for motor and reducer shaft bearings. It also provides a strong connection with minimal backlash, reducing the likelihood of failures.
A: To purchase original Nord brand gear units, please contact the original supplier directly.
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