Helical gears offer a refinement over spur gears. The leading edges of the teeth are not parallel to the axis of rotation, but are set at an angle. Since the gear is curved, this angling makes the tooth shape a segment of a helix. Helical gears can be meshed in parallel or crossed orientations. The former refers to when the shafts are parallel to each other; this is the most common orientation. In the latter, the shafts are non-parallel, and in this configuration the gears are sometimes known as “skew gears”.
Helical gears can be paired in parallel when meshed with the same direction of helix angles (Right hand and Right hand / Left hand and Left hand) or they can be meshed perpendicular too by using a combination of opposing helix angles (Right hand and Left hand).
We standardized stainless steel and plastic Helical gears for customers in the food and packaging industries.

Helical Gear Design – 3D CAD models and 2D CAD drawings
Now, you can verify the dimensions of our standard Helical Gears through our PDF catalog or our Gear Selector provided by Part Community. Free CAD data is available on the website. Click the logo below to access the Helical Gear Selector.

Quotation of Standard Screw Gears
Please request your Quotation for our Helical Gears through our “Request For Quotation” page.

Helical Gear Modification
We can customize our standard Helical Gears to suit your specific applications, please consult with us. We are offering gear modification services. Please check the details and examples of modifications at our  “Gear Modification” page.

Precaution of Usage
Please refer to the following precautions before using our Helical Gears.
(PDF : “Precaution of usage for Helical gears” from our Catalog)

304 STAINLESS STEEL HELICAL GEARS	POM HELICAL GEARS	POM HELICAL GEARS
Material (ISO) : SUS304 Module : 1.0, 1.5 Number of teeth : 13, 26 ISO class N9	Material : POM (Blue) Module : 1.0 – 3.0 Number of teeth : 10 – 26 ISO class N9 – N10	Material : POM (White) Module : 1.0, 1.5 Number of teeth : 13, 26 ISO class N9 – N10
SUS304 stainless steel has better corrosion resistance than 303 stainless steel.	Blue Polyacetal (Blue POM) gears have a lower water absorption rate and dimensional stability compared with nylon gears, due to this greater material integrity POM has lower chances of bacterial and mold contamination and is therefor  approved by regulating authorities in the food industries of the US and Europe.	Polyacetal (POM) gears have a lower water absorption rate and better dimensional stability when compared with nylon gears.
PDF CATALOG	PDF CATALOG	PDF CATALOG

HARDENED HELICAL GEARS
Material (ISO) : S45C Module : 1.0 to 3.0 No. of teeth : 13, 26 ISO class N9
Hardened Helical gears provide more durability and a longer lifetime when compared to non-heated Helical gears.
PDF CATALOG