Spiral Bevel Gear

This precision-engineered spiral bevel gear is a high-performance transmission component designed for smooth, efficient power transfer between intersecting shafts, typically at a 90° angle, in demanding mechanical systems.

Construction & Materials

Manufactured from premium low-alloy steel, this gear undergoes a specialized heat-treatment process of carburizing, quenching, and tempering. This creates a hardened tooth surface (HRC 58–62) for exceptional wear resistance, paired with a tough, ductile core that can withstand high impact loads and torsional stress. The entire component is finished with a zinc phosphate coating, which provides superior corrosion protection, reduces friction during meshing, and helps retain lubricant to extend service life in harsh operating environments, including dusty, damp, or high-temperature conditions. The internal splined bore is precision-machined for a secure, slip-free connection to drive shafts.

Design Features

Spiral Tooth Profile: The curved, spiral teeth engage gradually with a mating gear, distributing contact stress across a larger surface area than straight-cut bevel gears. This design significantly reduces noise and vibration, enabling quieter operation even at high rotational speeds, while also increasing load-carrying capacity and resistance to tooth breakage.

Integrated Hub & Splined Bore: The one-piece hub design ensures maximum concentricity, and the internal splines provide a positive, torque-resistant connection to the drive shaft. This eliminates the risk of slippage under heavy loads and maintains precise alignment throughout the component’s service life.

Precision Machining: The gear teeth are cut using CNC gear grinding to achieve an accurate involute profile, ensuring smooth meshing, minimal backlash, and consistent torque transfer. The optimized tooth geometry distributes contact stress evenly, reducing the risk of pitting, scuffing, or tooth fatigue.

Performance & Applications

This spiral bevel gear excels in applications requiring high torque, low noise, and precise power transmission between intersecting shafts, such as:

Automotive differentials, transfer cases, and steering systems

Heavy-duty industrial gearboxes for conveyors, crushers, and mixers

Agricultural machinery including tractor transmissions and harvester drives

Construction equipment like excavator and loader drivetrains

Its combination of rugged construction, precision engineering, and corrosion resistance makes it a dependable choice for critical systems where downtime is costly and performance is essential.