Worm gears are made up of a worm and a gear (also known as a worm wheel), which have non-parallel, non-intersecting shafts that are aligned 90 degrees to each other. The worm resembles a screw with a V-type thread, while the gear resembles a spur gear. Typically, the worm is the driving component, with the worm's thread advancing the gear's teeth.

Types of Worm Gearbox

• Single Stage Reduction Worm Gearbox
• Double Stage Reduction Worm Gearbox

Specifications of Worm Gearbox

Shaft to Bore Wormwheel Gearboxes

Shaft to bore worm gearboxes are engineered for ≤30 arc minutes of backlash.  Available ratios range from 5:1 to 120:1 with single-ended or double-ended output shafts.  Imperial and metric sizes.

• High efficiency: up to 90% at 1,000 RPM
• Output torque up to 1,400 lbf.in.
• Rated for input speeds up to 3,000 RPM 
• Backlash as low as 4 arc minutes

Flange Wormwheel Gearboxes

Flange gear reduction boxes have a compact footprint and produce an output at 90° from the input. Available in a range of sizes with single-ended or double-ended output shafts, and with standard ratios ranging from 5:1 to 120:1. Imperial and metric sizes.

• High efficiency: up to 90% at 1,000 RPM
• Output torque up to 1,400 lbf.in.
• Rated for input speeds up to 3,000 RPM 
• Backlash as low as 4 arc minutes

Flange Worm Drive Gearboxes

Flange worm gearboxes feature a compact aluminum frame with a 90° output angle and are offered with reduction ratios ranging from 5:1 to 120:1. Optional NEMA 17 and NEMA 23 inputs are available, as well as single-output or double-output shafts.  Imperial and metric sizes.

• High efficiency: up to 90% at 1,000 RPM
• Output torque up to 1,400 lbf.in.
• Rated for input speeds up to 3,000 RPM 
• Backlash as low as 4 arc minutes

Miniature Wormwheel Gearboxes

Miniature worm gear reduction boxes are greased for life and offered in metric sizes with ratios ranging from 1:1 to 30:1. Available in 3.00mm or 4.00mm shaft output options. Metric sizes only.

• High efficiency: up to 82% at 1,000 RPM
• Max. Output: up to 4,000 RPM
• Low backlash: ≈2°
• Output torque up to 3.95 lbf.in.
• Frame sizes 14mm cubed and 20mm cubed

High Ratio Reduction Worm Gearboxes

High reduction worm gearboxes feature parallel input and output shafts and are essentially two reduction gearboxes in a single unit. Dual ball bearings and permanent lubrication provide years of dependable high cycle performance. Select from three frame sizes with ratios ranging from 25:1 to 900:1. Metric sizes only.  

• Input speeds: up to 3,000 RPM
• Torque values: 2.2Nm to 34Nm
• Low backlash: ≈2°

Compact Wormwheel Gearboxes

Our most compact worm drive gearbox is designed to handle demanding power transfer applications and is available with a 5:1, 10:1 or 20:1 gear ratio. Features include machined aluminum housing and hardened steel gears. Imperial sizes only.

• High efficiency: up to 90% at 1,000 RPM
• Max. input speed: 3,000 RPM
• Low backlash: maximum ≈2°
• Output torque up to 3.95 lbf.in
• Lightweight – approximately 4oz
• Low profile – only 1.09 in high.

Economic Molded Glass Filled Housing Speed Reducers

Assembled in a Glass filled Nylon Housing are economic yet deliver superior performance.

• 15 different ratios ranging from 3.5:1 to 100:1
• Max. input speed: 1800 RPM
• Output torque up to 190 in-lbs
• Light weight Nylon housing
• Lubricated for life
• Shaft input to shaft output or shaft input to hollow bore output

Applications of Worm Gearbox

Machines Covered: We have supplied worm Gear Box for Conveyor, Material Handling Equipments, Agitator, Mixer, Ball Mill, Crushers, Cranes, Mining, Rolling Mill, Presses, Elevators/Escalator Drive Systems, Feeders, Small Ball Mills, Cooling towers, Extruders, Packaging, Filters, Stirrer Units, Hoists, Lapping Tables, Steel cooling beds, Gate control mechanisms, Hoisting machines, Lifts.

Industries Covered: Sugar, Elevator, Cement, Paper, Textile, Solvent Extraction, Plastic & leather, Rubber, Steel industry, Power plants, Mines and minerals, Waste water treatment, Food & tobacco.