Fixed Gear Bikes
WHY USE 40Cr MATERIA
Better material composition :40Cr is an alloy steel with more alloying elements, such as chromium, molybdenum and nickel, than 45# steel. With the addition of these elements, 40Cr gear has better wear resistance and corrosion resistance in use.
More stable performance: Due to the more uniform composition of 40Cr material, the performance of its gear in the manufacturing and use process is more stable, and there will be no inconsistent performance caused by material differences.
Higher hardness :40Cr gear can obtain higher hardness after heat treatment and can withstand greater load and higher working temperature. In contrast, 45# steel is prone to soft points after heat treatment, part of the point hardness does not meet the requirements, heat treatment hardening often encounter such problems, thus affecting the service life of the gear.
CNC GEAR
PRECISION GEAR
Our gears are made of 40Cr steel raw materials (except for the bevel gear part), which are formed by precise CNC machining. Equipped with professional equipment such as high-precision gear hobbing machine and gear profiler to ensure high-precision manufacturing of gears. The bevel gear part is injection gear, and the center shaft gear is 40Cr steel cutting gear, which is hardened to HRC42-47 through heat treatment process to ensure the durability and hardness of the gear in high-speed operation. Currently, CNC bevel gears and motor gears are being produced to further improve the quality and performance of the products.
UPDATE GEAR SET
1. The and packaging box have been changed
2. The number of holes in the sector gear with a diameter of 5mm has been updated from 3 to 4
3. The Bevel Gear shaft has been changed to a tooth shape, with a thicker tooth width and greater resistance
GEAR SET

The

The newly modified gear moves the position of the column to achieve the effect of not reducing the initial speed
GEAR RATIO
18:1
16:1
13:1
12:1
PRECISION
High-precision CNC turning, milling and corresponding modulus hobbing cutter processing tooth profile
CNC TURNING
GEAR HOBBING
CNC MILLING
STABILITY & RELIABILITY
The gear shaft and the gear piece adopt an interference fit of 005mm, and the purpose of tight connection is achieved through the press-fitting method. In actual production, only by strictly controlling the tolerance can the quality, stability and reliability of the gear connection be guaranteed. Too large or too small will affect the service life of the gear in high-speed operation, and seriously cause the gear shaft and the gear to separate.
FOR EXAMPLE:
HARDNESS & DEMAGNETIZING
The 40Cr material itself has its own magnetism In order not to affect the accuracy and service life, and to avoid the adsorption of tiny metal powder on the gear, we have done demagnetization treatment before leaving the . The following is the real shot of hardness test and demagnetization
Made of 40Cr material
Hardness: HRC42-47
Made of 40Cr material
Hardness: HRC42-47
Rockwell hardness tester
actual measurement value
Bevel Gear
Shaft Gear
The Bevel tooth part: injection tooth
Hardness: HRC42-47
Central shaft gear: CNC 45# Steel
Hardness: HRC40-42
Demagnetization Treatment
OUR
==========
Hign-concerned Chemical : None
Is Electric : No Battery
Is it battery/power supply : N
Is it charger/adapter : N
Is Batteries Included : No
Model Number : 18:1 16:1 13:1 12:1
Upgrade Parts/Accessories : Gear
RC Parts & Accs : Starter Boxes
Material : Metal
Recommend Age : 14+y
Use : Vehicles & Remote Control Toys