Best Boston Gear Gears in 2026
Daisy
Last Updated: Jul 17, 2026
Daisy
Last Updated: Jul 17, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HARFINGTON | 9.92 | ✅ | ✅ | ✅ |
Size - Teeth: 62T, Tooth Pitch: 3.1mm / 0.12inch, Tooth Depth: 2.3mm / 0.09inch, Outer Diameter: 64mm / 2.52inch, Inner Diameter: 8mm / 0.31inch, Total Thickness: 10mm / 0.39inch, Module: 1 Mod, Pressure Angle: 20°
Material - The pinion motor gear is made of 45# Steel, the tooth surface is treated by high frequency quenching, more stable, anti-wear, strong and durable, and durable in use.
Feature - Good machining made it less rough and noisy than other gears, making them roll smoothly.
Application - Good straight spur gear replacement for your device.
Note - The inner hole of the gear is the blank hole, which needs to be processed by itself. The pinion gear aperture is 8mm and the module is 1, please check the size before purchasing. You will receive 1 x straight spur gear.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HARFINGTON | 9.92 | ✅ | ✅ | ✅ |
Size - Teeth: 12T, Outer Diameter: 14mm / 0.55inch, Aperture: 5mm / 0.2inch, Effective Tooth Length: 20mm / 0.79inch, Total Thickness: 25.4mm / 1inch, Module: 1 Mod, Pressure Angle: 20°
Material - The pinion motor gear is made of Stainless Steel, more stable, anti-wear, strong and durable, and durable in use.
Feature - Good machining made less rough and noise than other gears, making them roll smoothly.
Application - Good pinion gear replacement for your device.
Note - The pinion gear aperture is 5mm and the module is 1, please check the size before purchasing.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HARFINGTON | 9.90 | ✅ | ✅ | ✅ |
Size - Modulus: 1.0, Teeth Number: 25, Height: 15.16mm / 0.6inch, Outer Dia: 26.4mm / 1.04inch, Inner Dia: 6mm / 0.24inch, Step Height: 8mm / 0.31inch, Step Dia: 20mm / 0.79inch, Effective Tooth Length: 6mm / 0.24inch
Material - Made of quality plastic, not easy to wear, is durable, and has lasting performance. This gear is an good industrial replacement accessory.
Feature - The contact between the gears is firm, ensuring the machine's normal operation and good bearing capacity.
Application - Used widely in conveying, hardware, agricultural equipment, printing machinery, automotive applications, mechanical transmission, etc.
Note - Please confirm whether the size and number of teeth are suitable for your equipment before purchasing. 1:1 bevel gear (can only be matched with 1:1, can not be matched with gears with other modules and T numbers)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HARFINGTON | 9.90 | ✅ | ✅ | ✅ |
Size - Teeth: 40T, Tooth Depth: 2.5mm / 0.1inch, Gear Step Diameter: 35mm / 1.38inch, Gear Step Height: 19mm / 0.75inch, Keyway Length: 6mm / 0.24inch, Keyway Width: 2.8mm / 0.11inch, Outer Diameter: 58.56mm / 2.31inch, Aperture: 19mm / 0.75inch, Effective Tooth Length: 12mm / 0.47inch, Total Thickness: 20mm / 0.79inch, Module: 1 Mod, Pressure Angle: 20°
Material - The helical motor gear is made of 45# steel, more stable, anti-wear, strong and durable, and durable in use.
Feature - The gear has a black oxide finish for longer-lasting performance.
Application - The gears are quenched at high frequency and can withstand extremely high strength.
Note - The helical pinion gear aperture is 19mm and the module is 1, please check the size before purchasing. You will receive 1 x Helical Motor Gear and 2 x M5 Set Screws.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HARFINGTON | 9.92 | ✅ | ✅ | ✅ |
Size - Teeth: 32T, Step Diameter: 20mm / 0.79inch, Outer Diameter: 34mm / 1.34inch, Inner Hole Diameter: 10mm / 0.39inch, Effective Tooth Length: 10mm / 0.39inch, Total Thickness: 20mm / 0.79inch, Teeth Pitch: 3.1mm / 0.12inch, Teeth Depth: 2.3mm / 0.09inch, Module: 1 Mod, Pressure Angle: 20°
Material - The spur gear is made of Aluminum Alloy, more stable, anti-wear, strong and durable, and durable in use.
Feature - Good machining made less roughness and noise than other gears that make them roll smoothly. Good pinion gear replacement for your device.
Application - The spur pinion gears are widely applicable in various of Electric Grinders, Gearbox, Reduction Gear, and Gear Reducer.
Note - Please confirm the size of the product before purchasing.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HARFINGTON | 9.91 | ✅ | ✅ | ✅ |
Size - Modulus: 1; Gear Teeth: 20; Outer Diameter: 23mm / 0.9"; Inner Diameter:8mm / 0.32"; Direction of Rotation: Right, Reduction rate: 10 : 1.
Material - The worm gear wheel is made of brass material, not easy to wear and tear, durable, and can last for a long time.
Feature - The worm gear wheel is compact, small volume, and light weight, it is easy to install and use, and the transmission process is smooth.
Application - It is used to decelerate the small motor and change the transmission direction. It can be applied to small motor products.
Package Content - 1pcs x brass gear wheel.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HARFINGTON | 9.91 | ✅ | ✅ | ✅ |
Size - Modulus: 0.5; Outer Diameter: 6.9mm Gear Shaft, 11.4mm Gear Wheel; Inner Diameter: 3mm Gear Shaft, 4mm Gear Wheel; Direction of Rotation: Right, Reduction rate: 20 : 1, Z1=1.
Material - The set is made of brass material, not easy to wear and tear, durable, and can last for a long time.
Feature - The gear wheel shaft set is compact, small volume, and light weight, it is easy to install and use, and the transmission process is smooth.
Application - It is used to decelerate the small motor and change the transmission direction. It can be applied to small motor products.
Package Content - 1pcs x brass gear wheel and 1pcs x brass gear shaft.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HARFINGTON | 9.90 | ✅ | ✅ | ✅ |
Size - Modulus: 1.0, Teeth Number: 15, Height: 13.95mm / 0.55inch, Outer Dia: 21.4mm / 0.84inch, Inner Dia: 5mm / 0.2inch, Step Height: 8mm / 0.31inch, Step Dia: 16mm / 0.63inch, Effective Tooth Length: 5mm / 0.2inch
Material - Made of quality plastic, not easy to wear, is durable, and has lasting performance. This gear is an good industrial replacement accessory.
Feature - The contact between the gears is firm, ensuring the machine's normal operation and good bearing capacity.
Application - Used widely in conveying, hardware, agricultural equipment, printing machinery, automotive applications, mechanical transmission, etc.
Note - Please confirm whether the size and number of teeth are suitable for your equipment before purchasing. 1:1 bevel gear (can only be matched with 1:1, can not be matched with gears with other modules and T numbers)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| HARFINGTON | 9.90 | ✅ | ✅ | ✅ |
Specifications - Material: 45# Steel, Finish: Black Oxide, Teeth: 16T, Tooth Depth: 2.3mm / 0.09inch, Gear Step Diameter: 20mm / 0.79inch, Gear Step Height: 8mm / 0.31inch, Outer Diameter: 22.63mm / 0.89inch, Aperture: 12mm / 0.47inch, Effective Tooth Length: 12mm / 0.47inch, Total Thickness: 20mm / 0.79inch, Module: 1 Mod, Pressure Angle: 20°
Material - The helical motor gear is made of 45# steel, more stable, anti-wear, strong and durable, and durable in use.
Feature - The gear has a black oxide finish for longer-lasting performance.
Application - The gears are quenched at high frequency and can withstand extremely high strength.
Note - The helical pinion gear aperture is 12mm and the module is 1, please check the size before purchasing. You will receive 1 x Motor Gear and 2 x M5 Set Screws.
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Harfington | 9 |
We've carried out a comprehensive analysis of 3 reviews on gears, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select gears priced around $13.16, with top brands including and
Our team of expert editors reviewed these high-quality items and handpicked the top 9 gears for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .
We are dedicated to assisting our users in finding the right gears Products based on their needs, saving them considerable time when choosing which gears to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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