Brass bevel gears with a straight-tooth system and gear ratios ranging from 1:1 to 4:1 are conical gears designed to transmit power between intersecting shafts, typically at a 90-degree angle. These gears feature straight teeth parallel to the cone's generators, resembling spur gears but with a conical shape, ensuring simple yet effective power transmission. The 1:1 ratio (mitre gears) maintains equal tooth counts for consistent speed, ideal for applications like hand drills or differential drives.
Ratios up to 4:1 allow speed reduction or torque increase, suitable for machinery requiring precise motion control. Made from brass (e.g., Ms58), they offer corrosion resistance and durability but are limited to lower-speed applications (under 1000 rpm) due to abrupt tooth engagement, which can cause noise and stress. They're often used in food industry equipment, as brass and straight teeth support wash-down capabilities.
Ratio 1:1 Brass Bevel Gears
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| Module | Number of teeth |
da | d | ND | NL | L1 | L | S | b | BH7 | E | Torque* | Weight |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | Ncm | g | ||
| 0,5 | 15 | 8,2 | 7,5 | 6 | 5 | 6,3 | 7,3 | 6,1 | 2 | 3 | 9,5 | 0,9 | 1 |
| 0,5 | 20 | 10,7 | 10 | 8 | 4 | 7 | 7 | 5 | 3 | 4 | 9,7 | 1,9 | 1 |
| 0,5 | 24 | 12,7 | 12 | 8 | 4 | 6,4 | 7 | 5 | 3 | 4 | 10,7 | 3,0 | 3 |
| 0,5 | 30 | 15,7 | 15 | 10 | 4 | 7,5 | 8,5 | 6,6 | 3 | 4 | 13,7 | 5,3 | 4 |
| 0,5 | 36 | 18,7 | 18 | 12 | 5 | 9 | 10,1 | 8 | 3 | 4 | 16,7 | 8,2 | 10 |
| 0,5 | 40 | 20,7 | 20 | 12 | 5 | 8,5 | 9,5 | 7,5 | 3 | 4 | 17,1 | 10,6 | 10 |
| 0,5 | 50 | 25,7 | 25 | 14 | 5 | 8,5 | 9,5 | 7,5 | 3 | 4 | 19,6 | 18,0 | 16 |
| 1 | 12 | 13,0 | 12 | 8 | 5 | 8,5 | 9,6 | 7,7 | 3 | 5 | 13,2 | 5,0 | 3 |
| 1 | 16 | 17,4 | 16 | 12 | 5 | 9 | 10,3 | 7,8 | 4 | 5 | 15,1 | 6,0 | 9 |
| 1 | 20 | 21,4 | 20 | 15 | 5 | 9 | 10,4 | 7,8 | 4 | 5 | 17,1 | 13,0 | 15 |
| 1 | 25 | 26,4 | 25 | 16 | 6,7 | 11,5 | 13 | 9,7 | 5 | 5 | 21,5 | 26,0 | 26 |
| 1 | 30 | 31,4 | 30 | 16 | 7 | 11,5 | 13,1 | 9,7 | 5 | 5 | 24,0 | 40,0 | 33 |
| 1 | 36 | 37,4 | 36 | 16 | 7 | 11,5 | 13 | 9,6 | 5 | 5 | 26,9 | 62,0 | 43 |
| 1 | 40 | 41,4 | 40 | 16 | 8 | 12,5 | 14 | 10,6 | 5 | 5 | 29,9 | 79,0 | 53 |
| 1 | 50 | 51,4 | 50 | 16 | 8 | 12,5 | 14 | 10,6 | 5 | 6 | 34,9 | 130,0 | 76 |
| 1 | 60 | 61,4 | 60 | 16 | 8 | 12,5 | 14,1 | 10,6 | 5 | 6 | 39,9 | 197,0 | 110 |
Ratio 1.5:1 Brass Bevel Gears
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| Module | Number of teeth |
da | d | ND | NL | L1 | L | S | b | BH7 | E | Torque* | Weight |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | Ncm | g | ||
| 0,5 | 20 | 11,0 | 10 | 8 | 3,5 | 6,5 | 7,1 | 4,7 | 3 | 4 | 11,9 | 2,4 | 2 |
| 0,5 | 30 | 15,4 | 15 | 10 | 4 | 6 | 7 | 5,4 | 3 | 4 | 10,1 | 3,6 | 4 |
| 1 | 20 | 22,1 | 20 | 15 | 5 | 10 | 11,1 | 7,2 | 5 | 5 | 21,5 | 18,0 | 16 |
| 1 | 30 | 30,8 | 30 | 16 | 5 | 9 | 10,9 | 8,3 | 5 | 5 | 17,7 | 27,0 | 28 |
Ratio 2:1 Brass Bevel Gears
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| Module | Number of teeth |
da | d | ND | NL | L1 | L | S | b | BH7 | E | Torque* | Weight |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | Ncm | g | ||
| 0,5 | 20 | 11,2 | 10 | 8 | 4 | 7 | 7,5 | 5,0 | 3 | 4 | 14,65 | 2,7 | 2 |
| 0,5 | 40 | 20,3 | 20 | 12 | 5 | 7,5 | 8,4 | 7,1 | 3 | 4 | 11,83 | 5,4 | 8 |
| 1 | 15 | 17,4 | 15 | 12,5 | 4,5 | 9 | 10,1 | 5,8 | 5 | 5 | 20,2 | 9,4 | 9 |
| 1 | 30 | 30,6 | 30 | 16 | 5 | 9 | 10,8 | 8,8 | 5 | 5 | 15,7 | 18,8 | 27 |
| 1 | 20 | 22,4 | 20 | 15 | 5 | 10 | 11,1 | 6,8 | 5 | 5 | 26,2 | 20,6 | 17 |
| 1 | 40 | 40,6 | 40 | 16 | 8 | 12 | 13,8 | 11,7 | 5 | 6 | 21,1 | 41,2 | 50 |
Ratio 2.5:1 Brass Bevel Gears
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| Module | Number of teeth |
da | d | ND | NL | L1 | L | S | b | BH7 | E | Torque* | Weight |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | Ncm | g | ||
| 0,5 | 20 | 11,3 | 10 | 8 | 4 | 7 | 7,6 | 4,9 | 3 | 4 | 17,1 | 3,0 | 3 |
| 0,5 | 50 | 25,2 | 25 | 14 | 5 | 7 | 7,8 | 6,8 | 3 | 4 | 11,5 | 7,5 | 12 |
Ratio 3:1 Brass Bevel Gears
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| Module | Number of teeth |
da | d | ND | NL | L1 | L | S | b | BH7 | E | Torque* | Weight |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | Ncm | g | ||
| 0,5 | 15 | 8,8 | 7,5 | 6 | 3,7 | 6,5 | 7 | 4,3 | 3 | 3 | 15,3 | 1,5 | 1 |
| 0,5 | 45 | 22,7 | 22,5 | 12 | 5 | 7,5 | 8,4 | 7,5 | 3 | 4 | 11,0 | 4,5 | 11 |
| 1 | 15 | 17,7 | 15 | 13 | 5 | 10 | 11,1 | 6,5 | 5 | 5 | 28,5 | 11,0 | 10 |
| 1 | 45 | 45,4 | 45 | 16 | 8 | 12,5 | 14,7 | 13,2 | 5 | 6 | 20,2 | 33,0 | 68 |
Ratio 4:1 Brass Bevel Gears
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| Module | Number of teeth |
da | d | ND | NL | L1 | L | S | b | BH7 | E | Torque* | Weight |
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | Ncm | g | ||
| 1 | 15 | 17,8 | 15 | 13 | 5,5 | 10 | 11 | 6,3 | 5 | 5 | 35,9 | 12,2 | 10 |
| 1 | 60 | 60,3 | 60 | 16 | 8 | 12,5 | 14,6 | 13,6 | 5 | 6 | 20,5 | 48,8 | 110 |
Brass Bevel Gear Design Features
- Straight-Tooth Design: Brass bevel gears with straight-tooth designs have radially aligned teeth on a conical surface. This arrangement enables efficient transmission of power at intersecting axes, typically set at 90 degrees. The straight teeth ensure lower manufacturing complexity and cost, making them suitable for applications requiring moderate precision and load handling.
- Material Strength and Durability: Made from high-quality brass, these gears offer excellent wear resistance, corrosion resistance, and thermal conductivity. Brass is robust yet lightweight, making the gears durable and suitable for prolonged use in various environments, including those exposed to moisture or mild corrosive conditions.
- Compact and Lightweight Construction: The compact design of brass bevel gears allows for efficient space utilization in mechanical assemblies. Their lightweight nature reduces the overall weight of the system, which is especially beneficial in applications like robotics, small machines, or precision instruments where weight optimization is critical.
- High Torque Transmission Capability: Despite their compact size, brass bevel gear sets are capable of handling significant torque loads. The ability to transmit torque effectively makes them ideal for systems requiring angular motion with power transfer, such as gearboxes, mechanical drives, and differential systems.
- Smooth and Quiet Operation: The excellent surface finish of straight bevel gears, combined with the material's inherent properties, ensures smooth engagement between teeth. This results in quieter operation compared to gears made from harder or less forgiving materials, making them suitable for noise-sensitive applications like clocks or medical devices.
- Versatility in Gear Ratios: Brass bevel gears are available in a wide range of gear ratios, such as 1:1 to 4:1. This versatility allows them to meet diverse requirements for speed reduction, torque amplification, or equal-speed motion transfer, providing flexibility across various mechanical systems and industries.
Brass Bevel Gear Applications
- Robotics and Automation Systems: Brass bevel gears are widely used in robotics for transmitting motion and torque between motorized components at precise angles. Their lightweight nature and compact size make them ideal for designing agile robotic arms, grippers, and other automated systems requiring smooth, reliable power transfer.
- Clocks and Precision Instruments: These gears are integral to clocks and other precision instruments, where smooth and quiet motion is essential. Brass's corrosion resistance and durability ensure long-term accuracy, while the gears' compact design supports intricate mechanisms in small devices like watches and scientific measuring tools.
- Small-Scale Machinery: In small machines such as sewing machines, textile equipment, or power tools, brass bevel gears efficiently transfer power between components at an angle. Their ability to handle moderate loads while maintaining durability makes them a preferred choice for compact mechanical systems.
- Aerospace and Aviation Equipment: Brass bevel gears find applications in aerospace systems where lightweight and corrosion-resistant components are critical. They are commonly used in flight control mechanisms and instrumentation systems, providing reliable performance under varying environmental conditions and ensuring precision in critical operations.
- Medical Devices: In medical equipment such as surgical tools, imaging devices, and laboratory automation systems, brass bevel gears enable precise motion control. Their quiet operation, compactness, and resistance to wear make them ideal for delicate medical applications where high reliability and accuracy are essential.
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| Automotive Industry | Robotics and Automation |
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| Aerospace Industry | Industrial Machinery |
