Engineered for smooth, quiet, and reliable performance in high-speed and high-load applications. We manufacture custom helical gears to your exact specifications.
We employ advanced CNC hobbing and grinding processes to manufacture helical gears that meet the most demanding specifications for performance and reliability.
Gear Type | Single Helical |
Module | 0.5 to 16 Module |
Diametral Pitch (DP) | 48 DP to 1.5 DP |
Helix Angle | Up to 45° (Right Hand or Left Hand) |
Maximum Diameter | Up to 1500mm (59 inches) |
Materials | Alloy Steel (EN24, EN353, 20MnCr5), Carbon Steel, SS |
Heat Treatment | Case Carburizing & Hardening, Nitriding, Induction Hardening |
Gear Quality Standard | Precision ground up to DIN 6 / AGMA 12 standards |
Choosing the right gear type is critical for your application's success. Here is a direct comparison between helical and spur gears.
Feature | Helical Gear | Spur Gear |
---|---|---|
Tooth Orientation | Angled to the gear axis | Parallel to the gear axis |
Noise & Vibration | Low (Smooth, gradual engagement) | Higher (Full tooth contact at once) |
Speed Capability | High | Moderate |
Load Capacity | Higher (Multiple teeth in contact) | Standard |
Axial Thrust | Yes (Requires thrust bearings) | No |
Best For | High-speed, high-load, quiet applications | Cost-effective, moderate-speed applications |
Due to their superior performance, our helical gears are the preferred choice for a wide range of critical and demanding industries:
The main advantage is smoother and quieter operation. The angled teeth engage gradually, reducing vibration and impact, which makes them ideal for high-speed applications like automotive transmissions.
Axial thrust is a force generated along the gear's axis due to the angled teeth. This force must be managed by appropriate thrust bearings. For applications where this force must be eliminated, we recommend our Double Helical (Herringbone) Gears.
The helix angle is the angle between the gear tooth and the axis of the gear. A larger helix angle results in smoother operation and higher load capacity, but also generates more axial thrust. We can manufacture gears with any required helix angle.
This refers to the direction of the angle on the gear's teeth. When viewing the gear face, a right-hand helix slopes up to the right, and a left-hand helix slopes up to the left. For helical gears on parallel shafts to mesh, they must have the opposite hand (one RH and one LH).
Helical gears are typically made from alloy steels, carbon steels, stainless steel, bronze, or engineering plastics. Material choice depends on load, speed, and application requirements.
Common processes include gear hobbing, shaping, grinding, and precision heat treatments like carburizing, nitriding, or induction hardening for strength and durability.
Gear precision is measured using AGMA, DIN, or ISO standards with specialized measuring machines to check tooth profile, lead error, and runout.
They are commonly used in automotive transmissions, high-speed gearboxes, compressors, turbines, pumps, and marine drives where quiet and strong operation is needed.
Cost varies depending on size, module, helix angle, material, precision, and batch quantity. Custom precision-ground gears cost more than standard types.
Lead times range from a few days for small runs to several weeks for large or complex gears requiring heat treatment and grinding.
Yes, we can reverse engineer from a physical sample, create CAD models, and manufacture accurate replacement gears.
They include single helical gears, double helical gears (herringbone), and crossed-axis helical gears for specialized needs.
Axial thrust is managed using thrust bearings or eliminated using double helical gears where the forces cancel each other out.
They require high-performance gear oil with anti-wear and anti-foam additives to ensure long life and efficient operation.
Typical issues include wear, overheating, misalignment, or noise. These can be minimized with proper design, material selection, and lubrication.
Please provide module or DP, number of teeth, face width, helix angle and hand (RH/LH), bore size, material, hardness, and required quantity.
We master the nuances of helical gear manufacturing to deliver superior performance.
The primary benefit of a helical gear is its quiet operation. We achieve this through ultra-precise CNC profile grinding, ensuring a perfect helix angle and tooth form for smooth, gradual engagement and minimal vibration, even at very high RPMs.
We understand that helical gears generate axial thrust. Our engineers can advise on the required bearing configurations or, for high-torque applications where thrust must be eliminated, recommend our specialized Double Helical Gears.
Your application is unique. We manufacture helical gears with any required helix angle (RH or LH) from certified materials like EN353 or 20MnCr5, applying specific case hardening treatments to create gears that can withstand immense operational stresses.
Understanding the design principles of helical gears is crucial for high-performance applications.
A helical gear is a cylindrical gear where the teeth are cut at an angle to the axis of rotation. This angle is known as the helix angle. Unlike spur gears which engage along their entire face at once, the angled teeth of helical gears engage gradually. This rolling contact starts at one end of the tooth and progresses along its length, resulting in smoother, quieter operation and a higher load-bearing capacity.
The helix angle is the single most important parameter in a helical gear's design. A larger helix angle leads to smoother and quieter operation with more teeth in contact at any given time. However, it also generates a higher axial thrust force. We manufacture gears with both Right-Hand (RH) and Left-Hand (LH) helices. For parallel shaft applications, mating gears must have the same helix angle but opposite hands (one RH, one LH).
The primary design consideration for helical gears is axial thrust—a force generated parallel to the gear's axis. This force is a direct result of the angled teeth pushing against each other. It must be properly managed by using thrust bearings or other mechanical features within the gearbox to prevent axial movement and component wear. For the most demanding applications where this thrust must be internally cancelled, we invite you to explore our specialized Double Helical (Herringbone) Gears.
Shreeji Gears is recognized as a leading manufacturer, exporter, and supplier of helical gears in India. With years of expertise, we cater to industries across all major states and cities, delivering precision-engineered gears that meet the highest international standards.
We serve clients in Gujarat (Ahmedabad, Rajkot, Vadodara, Surat), Maharashtra (Mumbai, Pune, Nagpur), Karnataka (Bangalore, Mysore), Tamil Nadu (Chennai, Coimbatore), Telangana (Hyderabad), Delhi NCR (Noida, Faridabad, Gurugram), Punjab (Ludhiana, Jalandhar), Rajasthan (Jaipur, Udaipur), Madhya Pradesh (Indore, Bhopal), West Bengal (Kolkata), Odisha (Bhubaneswar), Kerala (Kochi), Uttar Pradesh (Kanpur, Lucknow, Ghaziabad), and many more.
Our strong supply chain ensures timely delivery of gears across all states of India, including Bihar, Jharkhand, Chhattisgarh, Assam, Uttarakhand, Himachal Pradesh, Goa and other regions. Beyond India, we are also a trusted exporter of helical gears to international markets.
"Our new gearbox design required extremely quiet operation. The precision-ground helical gears from Shreeji Gears exceeded our expectations, significantly reducing noise levels. Their quality is unmatched."— R&D Head, Industrial Drive Manufacturer
Provide us with your technical specifications for a competitive, no-obligation quote.
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