Double Helical Gear

Plastic Double Helical Gear

Double helical gears are a variation of helical gears in which two helical faces are placed next to each other with a gap separating them. Each face has identical but opposite helix angles. Employing a double-helical set of gears eliminates thrust loads and offers the possibility of even more significant tooth overlap and smoother operation. Double helical gears are commonly used in enclosed gear drives as helical gear.
Due to its advantages of high load capacity and stable transmission, double helical gears have been widely used in the power transmission of gas turbines, generators, prime movers, pumps, fans and compressors in ships and construction machinery.

As one of the leading double helical gear manufacturers, suppliers, and exporters of mechanical products, We offer double helical gear and many other products.Please get in touch with us for details.

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The most common plastic gears are spur, cylindrical worms, and helical gears. Almost all gears made of metal can be made of plastic. Compared with plastic gears of the same size, metal gears work well and have good dimensional stability when temperature and humidity change. But compared with metal materials, plastic has many advantages in cost, design, processing, and performance.

Compared to metal molding, the inherent design freedom of plastic molding ensures more efficient gear manufacturing. Products such as internal gears, gear sets, and worm gears can be molded from plastic, which is difficult to develop from metal materials at a reasonable price. Plastic double gears have a wider application area than metal gears, so they push the gears towards higher loads and more power. Plastic double gear is also an important material that meets the requirements of low-quiet operation, which requires high precision, a new tooth profile, and materials with excellent lubricity or flexibility.

Gears made of plastic generally do not require secondary processing, so a cost reduction of 50% to 90% is guaranteed compared to stamped and machined metal gears. Plastic double gears are lighter and more inert than metal gears. They can be used in environments where metal gears are easily corrupted and degraded, such as controlling water meters and chemical equipment. A plastic double gear is a type of gear with two spur gears piled together. Generally speaking, they have different dimensions of diameters.


Model   Number M1,M1.5,M2,M2.5,M3,M4,M5,M8,M12   and etc.
Material PA,   POM, UHMWPE, ABS, PTFE, PPS, Peek.
Surface   treatment
Standard ISO,   DIN, ANSI, JIS, BS and Non-standard.
Precision DIN6,DIN7,DIN8,DIN9.
Teeth   treatment Hardened, Milled, or Ground
Tolerance 0.001mm-0.01mm-0.1mm
Finish shot/sandblast, heat treatment, annealing, tempering, polishing, anodizing, zinc-plated
Items   packing Plastic   bag+Cartons Or Wooden Packing
Payment   terms T/T,   L/C
Production   lead time 20    business days for sample,25 days for the bulk
Samples Sample price range from $2 to $100.
sample express request paid by clients
Application 1.   Automatic controlling machine
2. Semi-conductor industry
3. General industry machinery
4. Medical equipment
5. Solar energy equipment
6. Machine tool
7. Parking system
8. High-speed rail and aviation transportation equipment, etc.