SW-1 Small Worm Gear Reducer: Speed Reducer

 

Performance Specifications         
Gearing Worm Gear
Maximum Input Speed 1,800 rpm
Gear Ratio 3.5:1 10:1 15:1 20:1 30:1 40:1 48:1 60:1
Rated Input
Hp at 1800 rpm
0.84 0.33 0.27 0.22 0.15 0.10 0.09 0.075
Rated Output
Torque lbs-inch
102 102 102 105 120 112 96 75
Output Torque Efficiency Chart
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Output Torque/RPM Curve
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A wide range of gear ratios is available to meet precise torque and speed requirements, with high gear ratios achieved by the worm and worm wheel design—where the input shaft must turn many times to rotate the output shaft once, providing significant mechanical advantage and right-angle power transmission. The main trade-off is lower efficiency due to sliding friction, which generates heat, but this also results in quiet, smooth operation with minimal noise and vibration.

Input/Output Configurations  
Double Input Shaft 0.3125 Dia solid 
Single Output Shaft Solid 1/2 Dia
  Hollow 5/8 ID
Input Shaft Bearings Sintered Bronze
Output Shaft Bearings Sintered Bronze

Multiple output shafts and configurations are available, and custom options can be manufactured to meet unique application requirements, including modifications to existing designs or entirely new models. The JRSTB series, for example, features a continuous worm shaft for additional couplings, and output shafts can be customized with keys and retainer rings for versatility.

General Specifications  
Lubrication Grease
Weight 1.75 Lbs (0.8 Kg)
SW-1S Dimension Chart Click Here for Chart
SW-1H Dimension Chart Click Here for Chart
SW-1 Mounting Configuration Chart Click Here for Chart
Download 3D Drawing SW-1 Click Here for Chart

The small diameter of the output gear allows for compact installations and use in space-limited applications, while the lightweight construction—using high-quality components and materials—ensures durability, reliability, and ease of integration. The SW-1 series is cost-effective, balancing performance and expense, and is designed for consistent operation across a variety of settings. The product range includes different models such as SW-1S and SW-1H, covering diverse application needs. Custom miniature and micro gearboxes can be engineered and manufactured for unique specifications, achieving high torque capacity and durability through specialized worm gear designs. Small worm gear reducers provide right-angle power transmission with a 90-degree orientation of the worm and worm wheel, making them ideal for tight spaces and efficient machine layouts. These gearboxes are widely used in automated systems, packaging machinery, robotics, conveyor systems, lifts, and hoists for precise, controlled, high-torque, low-speed motion, and their self-locking capability in high-ratio designs prevents back-driving. Superior Gearbox's Variodrive series and Cone Drive's double enveloping worm gear design are examples of industry innovations, offering higher load capacity and lower contact stress. All worm gear reducers are built to handle shock loads and are manufactured for reliable, quiet, and smooth operation.

SW-1S with Solid Output Shaft, SW-1H with Hollow Output Shaft

  • Rugged Housing: Compression-molded glass-fill polyester, manufactured for durability and reliability using high-quality materials.
  • Compact Size and Lightweight: The SW-1 series is manufactured with lightweight materials, such as machined aluminum, ensuring a compact, portable design without sacrificing performance.
  • Key Components: Features precision-engineered gear contours and wear compensation components that enhance gear contact, load capacity, durability, and provide zero backlash performance.
  • Ratios Available: from 3.5:1 to 60:1
  • Lubrication: Supplied factory lubricated with grease
  • Models and Custom Options: Available in different models, including SW-1S and SW-1H, with custom miniature gearboxes engineered and manufactured to meet unique specifications.
  • What is a Speed Reducer?

Learn more about worm gears.

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