ddb rnc big gears kit

Thingiverse DDB Direct Drive Diy Basic Kit

（RNC Nano Coated Gears Versions）

DDB Direct Drive & Bowden Extruder

Size of gears

All-metal high-temperature printing at 500+℃, compatible with multiple models.

Nylon Gears

Long-lasting and wear-resistant One-piece injection moulding
Large nylon gear Longer lasting and wear resistant.

Ultra-high hardness HV3300
HRC 60+
Hardened steel with RNC Nano Coating
High hardness for greater resistance to wear and tear

Trianglelab RNC nano coating gears, compared to other brands of gears tested

Brass DDB Extruder
Motor GEAR
Specifications: 5mm/0.5M 17T

PS: Please choose high quality products. Because it is more reliable. We hope that every customer will be happy to manufacture their own high-quality 3D printers.

MR85ZZ Bearing For
DDB Extruder
Solid texture, smooth and fine surface finish, no resistance in the bearings

Thumb Screw
Assembly

Collet Clips
Only suppot 1.75mm Filament

DDB Needle Bearing

Ball Bearings
We provide short shafts with 3MM diameter shaft
3X30/3X24/3X20

What's in the box
If you would like to purchase individually please click on the product image below

 

Conclusion

1.In terms of appearance, compared with other products,Trianglelab’s are smoother and finer, followed by the extrusion wheel of manufacturer B. Although there are knife lines, they are relatively fine and even

2.From the analysis of tooth profile, compared with triangular teeth, curved teeth can engage with filaments more deeply for grip force. In contrast, the tooth shape of Trianglelab is more smoother and more symmetrical, while the other tooth shapes have obvious knife lines, and the tooth bases are uneven. After a long time, there will be serious wear, resulting in the reduction of tooth life. The tooth shape of manufacturer D can not be distinguished, and the tooth tip can not be clearly distinguished, so the durability of manufacturer D is insufficient compared with other manufacturers’ products. The tooth surface and shaft of manufacturer C's product are slightly inclined, which may be due to the machining accuracy.

3.From the dimension analysis, the tooth diameter of manufacturer A, manufacturer B and Trianglelab is similar. Trianglelab’s tooth tip is thinner, makes it easier to cut into the filaments, and the next best is Manufacturer B, but manufacturer B's tooth beat is higher than Trianglelab’s. Manufacturer C's tooth tip is wider, so it is not conducive to access filaments. The tooth length analysis shows that the tooth length of Trianglelab is shorter and closer to the diameter of filaments, so the meshing of filaments is better than other’s.

4.Tension test method: Use DDB extruder, tighten the spring after the motor is energized, draw filaments. The filaments squeezed by the extrusion wheels of manufacturer A, C and D all slipped, and the filaments were pulled off by Trianglelab and manufacturer B.

5.In the hardness test, except the products of Trianglelab reached HRC50 or above, the highest hardness of the other products was HRC30, which is easy to wear, especially for printing composite fiber filaments.

6.Based on the above analysis, Trianglelab and manufacturer B’s appearance and size is better, Trianglelab’s hardness is higher, and the curved teeth of Trianglelab are recommended.