Engineered for compact, right-angle power transmission, our worm gears provide high reduction ratios and inherent self-locking safety.
We manufacture worm gear sets as matched pairs to ensure optimal contact, efficiency, and service life. The worm is a screw-like gear, conceptually similar to the gear used in our rack and pinion systems for linear motion.
| Worm (Screw) Specifications | |
|---|---|
| Material | Alloy Steels (EN353, 20MnCr5) |
| Heat Treatment | Case Carburized, Hardened & Tempered |
| Hardness | 50-58 HRC |
| Manufacturing | Thread Milling or Grinding for high precision |
| Starts | Single, Double, or Multi-start designs available |
| Worm Wheel Specifications | |
| Material | Phosphor Bronze (PB1, PB2), Aluminium Bronze, Cast Iron (CI FG260) |
| Manufacturing | Precision hobbing on specialized machines |
| Configuration | Solid, spoked, or with a steel hub and bronze rim |
Worm gears are the preferred solution where high reduction, load-holding, or compact design is essential:
Both are right-angle drives, but they serve very different purposes. Here’s a quick guide to help you choose.
| Feature | Worm Gear Set | Bevel Gear Set |
|---|---|---|
| Gear Ratio | Very High (10:1 to 100:1+) | Low (Typically 1:1 to 5:1) |
| Self-Locking | Yes (by design) | No |
| Efficiency | Lower (50-90%) | High (95-99%) |
| Heat Generation | High (due to sliding) | Low (due to rolling) |
| Backlash | Moderate to High | Very Low (with spiral bevel) |
| Ideal Use | High reduction, load holding | High efficiency, precision power transfer |
A worm gear is a compact gear system where a screw-like worm meshes with a wheel to provide high reduction ratios and smooth, quiet power transmission.
The primary advantage is achieving very high speed reduction in a single stage, such as 20:1, 50:1, or even 100:1, which would require multiple gear stages with other gear types.
Self-locking means the worm wheel cannot back-drive the worm. This prevents reverse motion and acts as a safety brake in lifts, hoists, and conveyors.
The worm is hardened steel for strength, and the wheel is bronze to reduce friction and wear, acting as a sacrificial component for protection.
They are used in elevators, hoists, conveyors, steering systems, packaging machines, automation systems, and material handling equipment.
Yes. Worm gears produce very high torque due to their high reduction ratios.
They operate through sliding contact instead of tooth impact, making them smoother and quieter.
Yes, high-viscosity lubricants such as ISO 460–680 oils are needed to maintain film strength under sliding friction.
Efficiency ranges from 40% to 90%, depending on load, lubrication, and ratio. Lower ratios typically offer better efficiency.
Most cannot due to self-locking characteristics, but low-ratio or high-lead designs may allow limited back-driving.
Proper lubrication, load, temperature, alignment, and the material pairing all affect lifespan.
They can be made of phosphor bronze, brass, aluminum bronze, cast iron, steel, or engineering plastics depending on the load requirements.
Typical ratios range from 10:1 to 100:1, with custom builds exceeding 300:1 for special applications.
India has many capable worm gear manufacturers. The right choice depends on material options, machining accuracy, customization, and experience.
Yes, Shreeji Gears produces precision worm gears and worm wheel sets with custom materials, sizes, and high-accuracy machining for industrial applications.
We manufacture precision-engineered worm gears and worm wheels based on detailed technical drawings, ensuring exact accuracy in lead angle, module, number of starts, pitch diameter, center distance, and material specifications. We also accept sample-based manufacturing through reverse engineering when drawings are not available.
We go beyond manufacturing to deliver worm gear sets that are robust, safe, and built to last.
A successful worm drive depends on the synergy between the worm and wheel. We pair case-hardened, ground-finish steel worms with high-quality phosphor bronze wheels. This combination minimizes friction, manages heat, and ensures the gear set wears predictably for a long, reliable service life.
The worm's profile is not just a screw; it's a precision-engineered gear tooth. Our CNC thread grinding and milling processes create a perfectly formed worm profile. We then hob the wheel to be a perfect conjugate, ensuring a full-contact patch for maximum torque transfer and smooth operation.
The self-locking feature is not an accident; it's a result of precise engineering. We control the lead angle of the worm to design a gear set that is either self-locking for safety or back-drivable for specific applications. You get the exact performance characteristics your system requires.
Worm gears, consisting of a worm (screw) meshing with a worm wheel (gear), are widely used for applications requiring very high reduction ratios in compact spaces. Their unique sliding action delivers smooth motion, quiet operation, and in some cases, a natural self-locking ability. Here’s when to choose a worm gear:
While worm gears are highly effective, their sliding tooth contact generates more friction and heat compared to rolling contact gears like helical gears. This makes proper material pairing (typically hardened steel worm with a bronze wheel) and efficient lubrication crucial for long life and optimal performance. With correct design, material selection, and maintenance, worm gears deliver exceptional durability in demanding environments.
At Shreeji Gears, we specialize in the production of custom worm gears and worm gearboxes tailored to your application. Our worm gears are trusted across industries for their high reduction capabilities, smooth transmission, and self-locking safety benefits. With advanced manufacturing technology and years of expertise, we deliver gears that meet the toughest performance standards worldwide.
We serve a wide variety of industries including industrial gearboxes, material handling equipment, conveyors, lifts, and automotive systems. Our supply network spans across:
Whether your requirement is for precision worm gears in automation or heavy-duty worm gearboxes in material handling, Shreeji Gears delivers durable, high-performance solutions across India and worldwide.
Provide your technical specifications for a fast and accurate quote from our engineering team.
For the quickest service, please email your engineering drawing or a sketch to support@shreejigears.com. Please include these key parameters in your inquiry:
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