Focusing on the design, manufacturing processes, heat treatment techniques, and key quality control points for all types of standard and non-standard gears.
| Parameter | Specification |
| Axis Arrangement | Crossed Axes, 90° Standard |
| Module | Customizable |
| Number of Starts | Single- or Multi-Start |
| Center Distance | Customizable |
A globoidal worm is a specialized transmission component for crossed-shaft systems. It is mainly used to transmit power between crossed shafts.
Its tooth surface features a globoidal, enveloping geometry. This geometry forms a curved-surface mesh with the mating worm wheel. The larger contact area supports high reduction ratios and torque multiplication. It also allows changes in the direction of power transmission.
Compared with conventional cylindrical worms, globoidal worms provide a larger contact area. This helps reduce the load per unit area. It can also improve load capacity and running stability.
The optimized meshing action helps reduce transmission impact and operating noise. This makes globoidal worms suitable for applications requiring smooth operation, accuracy, and long service life.
Globoidal worms are normally used with a mating worm wheel. They are widely used in precision reduction mechanisms, automation equipment, robot joints, machine tools, construction machinery, and industrial transmission systems.
Materials, heat treatment, and tooth surface finishing can be customized. The design can also be adjusted for different loads, speeds, and service life requirements.
The key feature of a globoidal worm is its concave, enveloping tooth surface. The tooth surface forms a spatial envelope with the mating worm wheel. This allows continuous and precise meshing.
Compared with conventional cylindrical worms, globoidal worms provide a larger effective contact area. More teeth can engage at the same time. This helps reduce contact stress and distribute the transmitted load more evenly.
The structure can improve load capacity and impact resistance. It can also contribute to more stable operation.
The tooth surface geometry is complex. High machining and matching accuracy are therefore required. The worm and worm wheel are usually designed as a matched pair.
Tooth geometry, lead parameters, and contact conditions can be optimized. This helps achieve the required meshing performance and transmission accuracy.
Globoidal worms are mainly used to transmit power between crossed shafts. The driving worm rotates the mating worm wheel. This provides high reduction ratios and torque multiplication.
The curved-surface meshing increases the effective contact area. It also helps distribute the load more evenly. As a result, tooth contact stress can be reduced and transmission smoothness can be improved.
The number of worm starts and worm wheel teeth can be adjusted. Other transmission parameters can also be optimized. This allows different reduction ratios for specific speed and torque requirements.
Globoidal worms offer high reduction ratios and a compact structure. They also provide smooth operation and relatively low noise.
Proper design, lubrication, and installation are important for stable performance. Under suitable conditions, the system can maintain reliable operation over long periods.
Compared with conventional worm drives, globoidal worms provide a larger contact area. This gives them good load-carrying potential. They are suitable for medium-low-speed and high-reduction-ratio applications.
They can also be used in continuous-duty transmission systems. Under certain conditions, a low lead angle may provide a self-locking effect. This can help limit reverse motion in some mechanisms.
Globoidal worms combine high reduction ratios with a compact design. They also provide smooth meshing and good load capacity.
These characteristics make them suitable for space-constrained systems. They are also useful when large speed reductions are required.
Compared with conventional cylindrical worms, globoidal worms require more complex machining. Pair matching also demands greater precision. Manufacturing costs are therefore generally higher.
They are best suited to equipment with higher requirements for transmission performance, reliability, and service life. Basic applications with strict cost limits may be better served by simpler worm designs.
| Parameter | Standard Application Model (General Service) | High-Precision Custom Model (Precision Transmission) |
| Core Structural Specifications | ||
| Worm Type | Globoidal Worm | Precision globoidal worm pair |
| Axis Arrangement | Crossed-axis design, 90° standard | Special shaft angles available |
| Center Distance | Designed according to installation space and transmission requirements | Optimized for load and accuracy requirements |
| Module | Determined according to load and structural requirements | Precision matched for high-load and high-accuracy applications |
| Number of Starts | Single- or multi-start | Optimized for efficiency, reduction ratio, and motion performance |
| Hand | Left-hand / right-hand | Special handedness and matched-pair designs available |
| Transmission Ratio | Designed according to worm starts and worm wheel tooth count | Precision transmission ratio optimization available |
| Lead Angle | Designed according to transmission requirements | Optimized for efficiency, noise, and self-locking requirements |
| Tooth Surface & Accuracy Specifications | ||
| Tooth Surface Structure | Globoidal enveloping surface | Precision globoidal tooth surface design |
| Meshing Method | Curved-surface worm and worm wheel meshing | Matched parameters and optimized contact pattern |
| Surface Accuracy | Customized according to application requirements | High-precision tooth surface machining and inspection available |
| Tooth Surface Roughness | Controlled according to machining process and application requirements | Improved surface finish through precision machining |
| Matched Pair Processing | Standard worm gear pair matching | Pair inspection and contact adjustment available |
| Manufacturing & Performance Capabilities | ||
| Machining Processes | Dedicated worm machining and forming processes | Precision profile machining and tooth surface finishing |
| Worm Material | 40Cr, 42CrMo, 45 Steel, and other materials | 20CrMnTi, 20CrMo, 42CrMo, 38CrMoAl, and other high-performance steels |
| Worm Wheel Material | Bronze, copper alloys, and other materials | High-performance copper alloys available |
| Heat Treatment | Quenching and tempering, nitriding | Quenching and tempering, carburizing and hardening, nitriding, induction hardening |
| Surface Treatment | Rust prevention and surface protection | Precision corrosion protection and special surface treatments |
| Load Capacity | Suitable for medium-low-speed, medium-load transmission | Suitable for continuous operation, high loads, and precision transmission |
| Running Performance | Smooth operation with relatively low noise | High stability, low vibration, and long-term accuracy retention |
| Remarks | The above are standard machining parameter ranges for our globoidal worms. Special sizes and non-standard structures can be custom-made according to your drawings or samples. For a quotation, please provide worm type, module, number of starts, center distance, material, accuracy requirements, and quantity. | |
High-quality blanks are forged and normalized to eliminate internal stress and stabilize material structure.
Turning, milling and hobbing/shaping are applied to form the target tooth profile with strict accuracy control.
Carburizing quenching or tempering processes to improve tooth surface hardness and core toughness.
Grinding of tooth flanks, bores and datum faces to correct deformation and enhance meshing precision.
Full-dimensional verification by gear measuring center and CMM to qualify products before release.
Professional anti-rust and protective packaging to keep products intact during storage and transit.
High-precision gear grinding delivers tooth surface roughness as low as Ra 0.4, with tight meshing, low vibration and noise for smoother equipment operation.
Premium materials matched with precise heat treatment ensure wear-resistant tooth surfaces and impact-resistant core, cutting maintenance and replacement costs.
Custom solutions for high-speed heavy load, corrosion resistance and food-grade scenarios, eliminating trial-and-error costs in product selection.
Scaled production supports tiered pricing for bulk orders with consistent quality; full-process control guarantees stable lead time and complete after-sales support.
Representative Grade: 45 Steel / C45
45 steel offers a good balance of strength, toughness, and machinability at a relatively low cost. After quenching and tempering, it can meet the requirements of some medium- and low-load globoidal worm applications. It is suitable for general machinery, industrial equipment, and standard gear reducers.
Representative Grades: 40Cr, 42CrMo
40Cr and 42CrMo provide high strength, toughness, and fatigue resistance. Quenching and tempering or induction hardening can improve tooth surface hardness and wear resistance. They are suitable for medium- to high-load, continuous-duty applications in gear reducers and industrial transmission systems.
Representative Grades: 20CrMnTi, 20CrMo
20CrMnTi and 20CrMo develop a hard surface layer and tough core after carburizing and hardening, offering good wear resistance, contact fatigue strength, and impact resistance. They are suitable for precision gear reducers, construction machinery, and transmission systems requiring long-term operation.
Representative Grade: 38CrMoAl
38CrMoAl can achieve high surface hardness, wear resistance, and dimensional stability after nitriding while retaining good core toughness. It is suitable for precision gear reducers, machine tools, and automation transmission mechanisms where high accuracy and long-term stability are required.
Representative Grades: ZCuSn10Pb1, ZCuAl10Fe3
Copper alloys offer good friction reduction, wear resistance, and anti-seizure performance. When paired with steel globoidal worms, they can reduce friction losses and improve meshing performance. They are mainly used for worm wheels in gear reducers, automation equipment, machine tools, and other smooth-running transmission systems.
Representative Grades: 304, 316, 420
Stainless steel provides good corrosion resistance and environmental durability. 304 and 316 are suitable for humid and corrosive environments, while 420 can achieve higher hardness and wear resistance through heat treatment. It is suitable for food, pharmaceutical, chemical, and other specialized transmission equipment.
In precision gear reducers, servo reduction units, and high-accuracy transmission systems, globoidal worms provide high reduction ratios and stable torque output. Their larger contact area helps distribute loads more evenly, reduce operating vibration, and meet requirements for transmission accuracy and long-term stability.
In robot joints, automated actuators, and rotary positioning equipment, globoidal worms are suitable for reduction drives where installation space is limited. Their compact design and smooth operation can be tailored to the required reduction ratio, load, and mounting space.
In CNC machine tools, machining centers, rotary tables, and indexing mechanisms, globoidal worms can be used for position control and auxiliary transmission. Proper control of tooth geometry, machining accuracy, and gear pair matching helps improve transmission stability and positioning performance while reducing the effect of vibration on equipment accuracy.
In construction machinery, heavy-duty equipment, and industrial reduction systems, globoidal worms can provide power direction changes, speed reduction, and torque multiplication. Their good load capacity makes them suitable for medium-low-speed, high-load, and continuous-duty applications, including compact industrial transmission systems.
Globoidal worms provide high reduction ratios and, under certain design conditions, can offer a degree of self-locking. They can therefore be used in automatic door drives, lifting equipment, and adjustment mechanisms. Actual self-locking performance should be verified based on lead angle, friction, lubrication, and load conditions.
In conveyors, material handling systems, and industrial production lines, globoidal worms provide stable speed reduction and torque transmission. Their compact structure and smooth operation make them suitable for space-constrained equipment operating at medium-low speeds and under continuous-duty conditions.
Inner VCI vacuum anti-rust process fully seals tooth flanks and critical machined surfaces, effectively resisting salt spray and moisture during ocean and air freight to keep precision gears corrosion-free throughout long-distance transit.
We select cost-effective logistics channels with stable transit time and controlled costs. Full logistics tracking is available with real-time status updates to ensure reliable and punctual delivery.
All products are covered by a 1-year warranty. Quality defects caused by non-human factors are fully guaranteed, removing your procurement concerns.
Our professional technical and after-sales team is always available to respond quickly to inquiries and after-sales needs, and efficiently resolve issues during installation and operation.
We support full-parameter OEM/ODM customization based on 2D/3D drawings or physical samples, including module, tooth profile, material and heat treatment specifications. You only need to provide core gear parameters, detailed drawings or physical samples to start the customization process.
You can send physical samples to us via international courier. Upon receipt, we will complete full-dimensional measurement and parameter verification, then arrange sample production after confirming the solution, ensuring the finished product fully matches the original in installation dimensions and transmission performance.
Prototype orders usually ship within 15–25 days, subject to heat treatment and grinding scheduling. Lead time for bulk orders will be confirmed after process finalization, with stable and well-managed production schedules.
We adopt a tiered pricing policy — the larger the order quantity, the more favorable the unit price. All orders follow the same production and quality inspection standards with strict accuracy control. Quality will never be compromised for larger order volumes.
We can include dimensional inspection reports, hardness test records and material certificates with each shipment. For high-precision key projects, professional inspection data from CMM and gear measuring centers is also available.
All products come with a 1-year warranty covering material defects and manufacturing quality issues under normal use. We also have a professional technical team to provide full-process consultation and selection support.
Spur gears feature a simple structure and no axial load, ideal for medium-low speed general transmission with higher cost-effectiveness. Helical gears run smoother with lower noise and higher load capacity, suitable for high-speed heavy-duty applications. We can recommend the optimal solution based on your actual requirements.
+86 184 3796 0706 
info@destinytrans.com 
