Best Boston Gear in 2026

Straight miter 90 degree mesh transmits mechanical power between perpendicular shafts

Pressure angle of 20 degrees for a lower contact ratio between gears, resulting in higher load capacity than smaller pressure angles

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 16 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 20 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 8 for applications where transferring torque is more important than controlling changes in speed and direction of rotation with precision

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 12 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 8 for applications where transferring torque is more important than controlling changes in speed and direction of rotation with precision

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 32 for applications where controlling changes in speed and direction of rotation with precision is more important than transferring torque

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 12 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 12 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 24 for applications where controlling changes in speed and direction of rotation with precision is more important than transferring torque

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 20 degrees for a lower contact ratio between gears, resulting in higher load capacity than smaller pressure angles

Diametral pitch of 16 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 20 degrees for a lower contact ratio between gears, resulting in higher load capacity than smaller pressure angles

Diametral pitch of 8 for applications where transferring torque is more important than controlling changes in speed and direction of rotation with precision

14-1/2 Degree Normal Pressure Angle

STEEL - HARDENED-ALL

Keyway only-1/8 X 1/16

14-1/2 Degree Normal Pressure Angle

STEEL - HARDENED-ALL

Keyway only-1/8 X 1/16

Setscrew and keyway-1/8 X 1/16

Steel - Hardened

Made in United States

Two metal hubs joined by a permanently bonded elastomer for a one-piece flexible shear coupling for connecting two shafts together

Accommodates misalignment in small equipment up to 1/32" parallel and 2" angular

High torsional deflection for isolating low frequency vibration

BUILD FINE MOTOR SKILLS: Kids develop creativity, imagination and fine motor skills by building.

DEVELOP CRITICAL THINKING & REASONING: Explore a garden of building possibilities while developing critical thinking and problem solving skills

INTERLOCKING GEARS TOY: Supports STEM by introducing children to sorting, grouping, counting, designing, constructing, and putting physics into play with spinning gear movement. BUILD BIGGER: Compatible with all other Gears! Gears! Gears! sets for even more imagination and fun

Authentic Grand Prix racing car - With this model car kit you can build a vintage racing machine yourself based on the legendary Grand Prix design of the golden age of the car

Beautiful design - Each hand crank operated wooden car model has work pistons, shock absorber springs and even a rear boot

Beginner DIY Kit - Complete with 384 elaborately designed components, any scale car model of adults or children can be assembled with the ability to follow instructions

DISCOVER: Invite “little engineers” to explore a world of building possibilities while developing critical thinking and problem solving skills; turning and spinning gears add a layer of action and interactivity to completed creations

DEVELOP: Boost fine motor skills while promoting reasoning as children create moving experiments; learning gets more intricate as children’s abilities advance

116-PIECE SET: Activity set includes 46 Colorful gears (blue, green, orange, red, purple), Special parts including wrecking ball, propeller; square pillars, 21 six-way axles, 6 interlocking bases, 1 crank handle, and activity guide

【Laser-Cut Model Kit】This mechanical wooden puzzle toy uses precision laser cutting,high-quality plywood,smooth touching.Pre-cut wooden board will be easy to pop the individual pieces out of the sheets,no glue required.The interlocking mechanisms are pretty ingenious.

【Retro Pendulum Clock】Start the clockwork,you will send yourself back to the industrial age.This is a model clock kits,not a real clock.The clock will only run for a few hours once it is driven by clockwork.Just enjoy its DIY work process.This clock craft kit imparts a vintage quotient to the ambience.Great choice as Thanksgiving Day Gift,Birthday Gift,Christmas Gift,Father's Day Gift.

【Decorate your home and office】The mechanical engineering kit is designed beautifully.The 3d wooden puzzle has decorative designs that look captivating in the finished product.Your guests will find it interesting and appealing with the entire setting and visible gear mechanism.

Amazing 3D mechanical puzzle: how about designing the whole world with your own hands? Introducing the globe - a stylized model of the Earth with two sets of decorative continents, a twist mechanism and extra small satellites

Fun and easy: As with other Ugears wooden model kits, 3D puzzles for children and adults, assembling the mechanical globe puzzle is an exciting and joyful activity. No glue or additional tools are required

Unique mechanism: the self-moving wooden globe puzzle is powered by a rubber tyre motor. Two interchangeable additional modules: Shuttle and Sputnik spin almost twice as fast as the globe

This Thread Repair kit is Used to Repair or Replace Damaged or Stripped Internal Screw Threads.

Ideal for Restoring Damaged Threads, Suitable for Engine Repair and Other Automotive Applications

The kit Has Altogether 131 Pieces, All Made According to Professional Standard.

UNLOCK the mysteries of mechanics with our STEM toy as your child explores the fascinating world of gears and worm drives. Watch as they discover how gears can speed up or slow down movement, and learn about worm drives that can change rotational speed.

BUILD 12 WORKING MODELS such as a crane, helicopter, gearbox and more, the possibilities are endless!

EASY TO FOLLOW instructions and the toy comes with 16 pages of theory and facts, accompanied by fun experiments to test newly acquired knowledge. Plus, a 3-page quiz section is included to test the children's understanding.

Technic Gears Assortment 450 Pices Parts,Same As Picture Compatible with major brands

Technic parts Gears Assortment Pack High quality same as top brand

STEAM activity kits ,Diy can assemble freedom to create a new design

The GEARBOX model kit is a miniature of a car transmission mechanism that transfers torque from the engine's crankshaft to the wheels. This mechanical toy features one reverse gear and three forward gears meaning layshaft and gears rotate with increasing speed. Like other UGears construction kits for adults and children, this educational toy has an iconic design and it moves.

EDUCATIONAL ENTERTAINMENT: The UGears STEM LAB helps educate kids while they’re having fun. Our building toys unveil the basic concepts of science, technology, engineering and maths, and help children relate to things in the real world. The hands-on experience of putting things together is much more fun and made easier because each mechanism is fully explained. Try and assemble UGears science kits for children and adults either by yourself or in a pleasant company.

Gain LIFE-LONG SKILLS and KNOWLEDGE: This new collection of 3D puzzles and construction toys is UNIQUE because it is all about mechanisms in common use like gears, differentials and transmissions as well as their application in real life. Our science kits prepare children to stay with it and persevere with their tasks, helping to increase their frustration tolerance. All you need is in the box, no glue or cutting required.

BUILD your own engineering creations with this 108-piece STEM building set!

DESIGN new twisting, turning Treadmobiles, or follow along with the included Activity Guide!

MASTER engineering, critical thinking, and other STEM skills with every build!

★Material: Made of high quality Aluminum Alloy, Surface oxidation treatment,durable, fine workmanship and high transmission accuracy

★Accurate transmission: without slipping at work, having a constant gear ratio

★Smooth transmission, precise tooth pitch, High transmission efficiency, energy-saving effect

Compatible with Redcat Lightning EP Drift, Lightning EPX PRO, Sandstorm, Sandstorm TK, Tsunami EPX, Volcano Epx/epx PRO, Vortex Epx/epx PRO 1/10 scale rc trucks car etc

Pecfect compatibile with HSP 94103(PRO), 94107(PRO), 94111(PRO), 94123(PRO), 94170(PRO)

64T Main Gear:Diameter of The Hole:5mm

The Gear Package included: spindle, single/double crown gear, pulley, rack, bevel gear, copper gear, bushings, axles, tires, rubber bands and so on, more accessories that you need for diy toy cars/robots/motors.

Axle length of 30mm, 50mm, 70mm, 100mm, shaft diameter is 2mm, 2pcs / kind, for a total of 8 Pcs

Five wheel wheels: outer diameter 30mm, inner hole 2mm，for a total of 4 Pcs