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Best Internal Gears - Buying Guide

Last Updated: 01/16/2019

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Bestselling Internal Gears on Amazon

  1. Boston Gear G675 Internal Gear, 14.5 Degree Pressure Angle, 24 Pitch, 36 Teeth, Brass
  2. Longruner 75 Type DIY Plastic Crown Gear Single Double Reduction Gear Worm Gear for RC Car Motor Robot
  3. Boston Gear G666 Internal Gear, 14.5 Degree Pressure Angle, 32 Pitch, 64 Teeth, Brass
  4. Boston Gear YI4872 Internal Gear, 20 Degree Pressure Angle, 48 Pitch, 72 Teeth, Brass
  5. Boston Gear YI2472 Internal Gear, 20 Degree Pressure Angle, 24 Pitch, 72 Teeth, Brass
  6. Trail-Gear 186040-1-KIT
  7. Boston Gear YI32192 Internal Gear, 20 Degree Pressure Angle, 32 Pitch, 192 Teeth, Brass
  8. Boston Gear G677 Internal Gear, 14.5 Degree Pressure Angle, 24 Pitch, 48 Teeth, Brass
  9. Boston Gear G635 Internal Gear, 14.5 Degree Pressure Angle, 48 Pitch, 96 Teeth, Brass
  10. Boston Gear YI3264 Internal Gear, 20 Degree Pressure Angle, 32 Pitch, 64 Teeth, Brass

  #1

Longruner 75 Type DIY Plastic Crown Gear Single Double Reduction Gear Worm Gear for RC Car Motor Robot

 PartNumber: LQY12   |   Asin: B06Y62XLRN

Longruner 75 Type Plastic Crown Gear Single Double Reduction Gear Worm Gear, great for all kinds of DIY cars, robots, model making accessories; suitable for DIY model production technology. Package included: -19X Double Reduction Gear(each one) --16102B, 18102A, 20082B, 20102B, 22082A , 22102B, 24102B, 24122B, 26082B, 28102B, 30162A, 30122B, 32082B, 34102B, 38082B, 40102B, 46082A, 48102B, 50102A -12X Single Reduction Gear(each one) --202A, 242A, 282A, 302A, 303A, 302.5A, 322A, 362A, 402A, 422A, 482A, 562A -11X Crown Gear(each one) --C152A, C203A, C282A, C282.5A, C303A, C322A, C20082A, C28082B, C28102.5B, C30102B, C40102B -9X Spindle Gear(each one) -- 80.8A, 81A, 81.5A, 82A, 102A, 122A, 132A, 142A, 182A -7X Belt Pulley(each one) --122B,102B, 62A, 132A, 16.82A, 242AB -6X Axle Sleeve(each one) --2A(2PCS), 2.5A(2PCS), 3A(2PCS) -5X Belt(each one) -2x Worm Gear(each one) -- W6*62A, W6*82A -2X Connecting Rack(each one) -1X Tee Collar --3T-2A-2B -1X Bevel gear --S162A Model Note: 1. The first two digits encoding: the number teeth of externally toothed gear. 2. The encoding three or four numbers: the number of internal gear teeth. 3. coding fifth digits: the pore size of the gears. 4. Last encoded in English: A: tight B: loose -2A indicates that the central axis is 1.95mm; it is tightly fitted with the optical axis of 2mm and rotates together with the optical axis. -2B indicates that the central axis is 2.05 mm; with the optical axis of 2 mm, it is loosely fitted and is free to rotate on the optical axis. -For example: Size of 16102B: 16 external teeth, 10 internal teeth, 2MM aperture, loose axle. -Gear diameter: (16+2)X 0.5(MM)=9MM Gear outer diameter is 9MM

Features

  • 100% Brand new and high quality.
  • 75 Type Plastic Crown Gear ideal for DIY science and small production, product design and mechanical model.
  • Type: Spindle gear, crown gear, single gear, double gear, worn gear, bevel gear, belt pulley, belt,connecting rack, axle sleeve, tee collar.
  • Material:Plastic; Quantity:75pcs; Weight:40g.
  • This is the most complete gear set, which can meet your DIY needs.
  • See more on Amazon...

Brand: Longruner   |   Manufacturer: Longruner

Package Dimensions: 1.5 x 4.02 x 5.98 inches (3.8 x 10.2 x 15.2 cm)

Amazon Price: $9.99 | as of 01/16/2019(4:13pm pst)
Availibility: Usually ships in 24 hours
List Price: $14.99

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  #2

Trail-Gear 186040-1-KIT

 Ean: 1200475780905   |    PartNumber: 186040-1-KIT   |   Asin: B00ZBB2S76

This item is designed to fit specific vehicles. Please ensure correct part fitment before purchasing this project. Contact the seller directly for additional product information and availability.MOTOR MOUNT KIT.

Features

  • Comes with full manufacturer warranty
  • Fits multiple makes and models (contact seller with your vehicle for fitment compatibility information)
  • See more on Amazon...

Brand: Trail Gear   |   Manufacturer: Trail-Gear

Item Dimensions: 3.5 x 7.5 x 7.5 inches (8.9 x 19.1 x 19.1 cm)   |   

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  #3

American Standard Timing Pulley, 40XL037-5/16

 PartNumber: 40XL037-5/16   |   Asin: B07GNQFTXD

American standard timing pulley

Features

Brand: XCNC   |   Manufacturer: Material: carbon steel

Amazon Price: $71.56 | as of 01/16/2019(4:13pm pst)
Availibility: Usually ships in 4-5 business days
List Price: $71.56

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  #4

European Standard Expansion Sleeve, CAL5A-F30/55-LOCK4 Combination

 Ean: 0192687210312   |    PartNumber: CAL5A-F30/55-LOCK4   |   Asin: B07GK718VJ

European standard expansion sleeve, CAL5A-F30/55-LOCK4

Features

Brand: XCNC   |   Manufacturer: Carbon steel

Amazon Price: $87.78 | as of 01/16/2019(4:13pm pst)
Availibility: Usually ships in 4-5 business days
List Price: $87.78

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  #5

American Standard cast Iron Pulley 1-3V280-1108 with TB Sleeve

 Ean: 0192687202362   |    PartNumber: 1-3V280-1108   |   Asin: B07GH67PCC

American standard cast iron pulley 1-3V280-1108 with TB sleeve Inner diameter: 24mm

Features

Brand: XCNC   |   Manufacturer: cast iron

Amazon Price: $178.89 | as of 01/16/2019(4:13pm pst)
Availibility: Usually ships in 4-5 business days
List Price: $178.89

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  #6

American Standard cast Iron Pulley, 23V335-SH with QD Taper Sleeve.

 Ean: 0192687210305   |    PartNumber: 23V335-SH   |   Asin: B07GH4FGFZ

American standard cast iron pulley Inner diameter: 32mm

Features

Brand: XCNC   |   Manufacturer: cast iron

Amazon Price: $89.89 | as of 01/16/2019(4:13pm pst)
Availibility: Usually ships in 4-5 business days
List Price: $89.89

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  #7

Lightweight Tail Teeth, Modified Acceleration Gear Transmission

 PartNumber: Speed ratio: 14:37   |   Asin: B07GFNHCDC

modified acceleration gear transmission

Features

Brand: XCNC   |   Manufacturer: Model: tail teeth

Amazon Price: $88.78 | as of 01/16/2019(4:13pm pst)
Availibility: Usually ships in 4-5 business days
List Price: $88.78

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  #8

Gearbox Drive Wheel Assembly Gear - Large Ring Gear (Inner Ring Gear)

 Ean: 0192687202263   |    PartNumber: Modulus: 1.5mm   |   Asin: B07GD2ZPYK

Material: 40GrMnTi Diameter: 200MM Inner hole: 180mm Number of teeth: 99 Modulus: 1.5mm

Features

Brand: XCNC   |   Manufacturer: Material: 40GrMnTi

Amazon Price: $245.67 | as of 01/16/2019(4:13pm pst)
Availibility: Usually ships in 4-5 business days
List Price: $245.67

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  #9

Transmission Accessories,Truck Drive Gear

 Ean: 0192687210213   |    PartNumber: Modulus: 1.25mm   |   Asin: B07GBBZHGP

Name: Inner ring gear Material: 20GrMnTi Specifications are as follows: Diameter: 99mm Thickness: 12mm Inner hole: 16mm Flat key hole: M5 Number of teeth: 72 Modulus: 1.25mm

Features

Brand: XCNC   |   Manufacturer: Inner ring gear

Amazon Price: $498.78 | as of 01/16/2019(4:13pm pst)
Availibility: Usually ships in 4-5 business days
List Price: $498.78

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  #10

Electric Truck Horizontal Drive Wheel - Small Straight Tooth (Pinion)

 PartNumber: M1.5   |   Asin: B07FYNL8BV

Diameter: 30mm Height: 18mm Flat key hole: M8 Number of teeth: 14 Modulus: 1.5mm

Features

Brand: XCNC   |   Manufacturer: Material: 20GrMnTi

Amazon Price: $88.78 | as of 01/16/2019(4:13pm pst)
Availibility: Usually ships in 4-5 business days
List Price: $88.78

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  1. Longruner 75 Type DIY Plastic Crown Gear Single Double Reduction Gear Worm Gear for RC Car Motor Rob...
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  2. Trail-Gear 186040-1-KIT

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  2. Trail-Gear 186040-1-KIT



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