Gears
Spur, helical, bevel, worm and internal gears plus racks.
Also searched as: spur gearsbevel gearsworm gearhelical gearsgear rack
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Spur Gear
Pitch: 10Type: Inch
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90° Angle Bevel Gears
Angle: 90°Manufacturing Method: Rolling GearToothed Portion Shape: Bevel Wheel
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Bevel Gear
Module: 1MQuantity: 2Shaft Diameter: 8mmTeeth: 12
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Bevel Gears
Design: Straight Bevel
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CNC Machined Spur Gear
Gear Position: External GearHardness: Hardened Tooth SurfaceManufacturing Method: CastToothed Portion Shape: Spur Gear
from $49.90Made-in-China $49.90 -
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from $5.00Made-in-China $5.00 -
Cast Spiral Bevel Gears & Spur Gears
Duty: Heavy
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Custom Large Steel Spur Gear
Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural MachineryCertificate: ISO9001Gear Position: External GearHardness: Hardened Tooth SurfaceManufacturing Method: Custom
from $40.00Made-in-China $40.00 -
Custom Metal Helical Gear Rack
Module: 1.25
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Customized Double Helical Gears
Gear Position: Internal GearHardness: Hardened Tooth SurfaceModel NO.: Helical duplex gears
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Customized Spur Gear
Gear Position: Internal GearHardness: Hardened Tooth SurfaceManufacturing Method: CastToothed Portion Shape: Spur Gear
from $4.70Made-in-China $4.70 -
Customized Steel Precision Spur Gear
Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural MachineryCertificate: ISO9001Gear Position: External GearHardness: Hardened Tooth SurfaceManufacturing Method: Custom
from $40.00Made-in-China $40.00 -
Durable Precision Engineered Spur Gear
Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural MachineryCompact Structure: High Power DensityConstant Transmission Ratio: Accuracy Error < 0.1%Excellent Flexural Strength: Resistance to Impact LoadsGear Position: External Gear
from $41.00Made-in-China $41.00 -
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High Precision Custom Steel Worm Gears and Shaft
Application: MachineryGear Position: External GearHS Code: 7315119000Hardness: Hardened Tooth SurfaceHole: 6/8/10/12....
from $10.00Made-in-China $10.00 -
High Precision Customized Worm and Pinion Gears
Precision: High
from $5.00Made-in-China $5.00 -
High-Precision Custom Helical and Spur Gear
Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural MachineryBore: Taper Bore, Finish BoreCustom: Drawings From CustomersDimension Tolerances: -/+0.01mmGear Position: Internal Gear
from $60.00Made-in-China $60.00 -
Industrial-Grade Spur Gear
Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural MachineryGear Position: External GearHardness: Hardened Tooth SurfaceManufacturing Method: Cast GearModel NO.: OEM
from $40.00Made-in-China $40.00 -
from $1,000.00Made-in-China $1,000.00 -
M3 Gear Rack
Diametral Pitch: 12Module: M3Pitch Height: 0.42 inPressure Angle: 14.5 °
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M5 Steel Spur Gear Rack
Module: M5
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from $40.00Made-in-China $40.00 -
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Module 1 Standard Size Steel Spur Gear
Application: Motor, Electric Cars, Machinery, Marine, Agricultural Machinery, CarColor: Standard and CustomziedGear Position: Standard and CustomHS Code: 8483900090Hardness: Hardened Tooth Surface
from $0.20Made-in-China $0.20 -
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Planetary Gear Worm Gears
After Warranty Service: Video Technical Support, Online SupportApplication: Motor, Electric Cars, Motorcycle, Machinery, Marine, Agricultural Machinery, CarColor: Dark GreyCustomized: OEMGear Position: External Gear
from $90.00Made-in-China $90.00 -
Precisely Machined Stainless Steel Spur Gear
Gear Position: External GearHardness: Hardened Tooth SurfaceManufacturing Method: RollingToothed Portion Shape: Spur Gear
from $1.30Made-in-China $1.30 -
from $141.00Made-in-China $141.00 -
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from $141.00Made-in-China $141.00
About gears
Gears transmit rotary motion and torque between shafts, or convert rotary motion into linear motion. This category encompasses a range of gear types, including spur, helical, bevel, worm, and internal gears, as well as racks. Spur gears are the simplest and most common, used for parallel shaft applications. Helical gears offer smoother, quieter operation and higher load capacity due to their angled teeth. Bevel gears are designed for intersecting shafts, typically at 90 degrees. Worm gears provide high reduction ratios and self-locking capabilities. Internal gears have teeth on the inside circumference and are often used in planetary gear sets. Racks convert rotary motion from a pinion into linear motion. Key selection parameters include module or diametral pitch, number of teeth, pressure angle (commonly 14.5° or 20°), bore diameter, face width, and material. Common materials include steel (e.g., 1045, 4140, case-hardened alloys), stainless steel, brass, bronze, and engineering plastics like acetal or nylon. Surface treatments such as black oxide, nitriding, or case hardening are applied for wear resistance and corrosion protection.
How to choose
When selecting gears, first determine the required speed ratio and shaft orientation (parallel, intersecting, or non-intersecting non-parallel). This narrows the choice to spur, helical, bevel, or worm gears. Next, specify the torque or power to be transmitted, which, combined with the desired speed, dictates the required module/diametral pitch and face width. Consider the operating environment; noise constraints may favor helical gears over spur, while space limitations might lead to internal gears. Finally, select the material based on load, wear resistance, and cost, considering heat treatment or surface finishes for demanding applications. For linear motion, determine the required travel and force to specify the rack and pinion.