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, SAE 8620) |
Heat Treatment | Case Carburized, Hardened & Tempered |
Hardness | 58-62 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 |
The primary reason is to achieve a very high gear reduction ratio in a single, compact stage. Ratios of 20:1, 50:1, or even 100:1 are common, which would require multiple gear pairs with other gear types.
Self-locking means the worm wheel cannot drive the worm, effectively acting as a brake. This is a critical safety feature in applications like lifts, hoists, and conveyor belts, as it prevents the load from back-driving the motor when power is off. We engineer this feature based on your needs.
This is crucial for performance. The worm (screw) is made of a hard material like case-hardened steel to withstand rotational stress. The wheel is made of a softer, conformable material like bronze, which reduces friction, minimizes wear on the hardened worm, and dissipates heat effectively. Learn more about our material expertise.
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: