Nord Gearbox SK1SI31-20-D-56
$409.30
Nord Gearbox SK1SI31-20-D-56 — FLEXBLOC worm gearbox with 1.22″ center distance, 20:1 ratio, NEMA 56C input, and double-extended output shaft. Produces 88 RPM output and 239 lb-in torque.
Description
Nord Gearbox SK1SI31-20-D-56 Overview
The Nord Gearbox SK1SI31-20-D-56 is a NORD FLEXBLOC right-angle worm gearbox built for efficiency, torque, and long service life. Featuring a 1.22″ center distance, a 20:1 ratio, and a NEMA 56C motor adapter input, this model provides reliable performance for mid- to low-speed applications. Its 0.625″ double-extended output shaft offers flexible mounting for dual-shaft configurations.
Key Features & Specifications
✔ Center Distance: 1.22″ – Compact and efficient design
✔ Ratio: 20:1 – Provides balanced reduction for precise speed control
✔ Input: NEMA 56C Motor Adapter – Compatible with widely available motor frames
✔ Output Shaft: 0.625″ Double Extended – Enables dual-shaft mounting versatility
✔ Output Speed (RPM): 88 @ 1750 RPM motor input
✔ Maximum Input Horsepower: 0.49 HP
✔ Maximum Output Torque: 239 lb-in
Ideal For
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Conveyor systems needing mid- to low-speed reduction
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Packaging and processing equipment
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Industrial automation with dual-shaft setups
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OEM replacements using NEMA 56C frame motors
Purchase the Nord Gearbox SK1SI31-20-D-56
This FLEXBLOC worm gearbox is engineered for reliable torque transfer and efficient performance across a variety of industrial applications. Order online for fast shipping, competitive pricing, and expert support.
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FAQs
What is the Nord SK1SI31-20-D-56 used for?
It is commonly used in conveyors, packaging, and automation systems requiring dual-shaft configurations with mid- to low-speed reduction.
What is the reduction ratio of this gearbox?
The SK1SI31-20-D-56 has a 20:1 ratio, producing an output speed of 88 RPM with a 1750 RPM motor input.
What type of output shaft does it have?
This model features a 0.625″ double-extended output shaft for flexible dual mounting applications.
How much torque can it deliver?
It provides up to 239 lb-in of torque, ideal for moderate-load machinery.
Is it compatible with standard motors?
Yes, it includes a NEMA 56C motor adapter input, making it compatible with widely available electric motors.



