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Helical Gear

Unlike spur gears, helical gears have teeth cut at an angle (helix) on a cylindrical body — providing smoother, quieter operation.

Helical Gear
PRODUCT INFO

Helical Gear

Unlike spur gears, helical gears have teeth cut at an angle (a helix) on a cylindrical gear body. The angled teeth engage gradually, providing smoother and quieter operation.
CAPACITY
Ø 10 — 3100 mm
MODULE/STANDARD
Mn 0.5 — 25.4
TYPE
DIN / ISO / SAE
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EVALUATION

Helical Gear advantages and important considerations

Advantages

  • The angled teeth engage gradually, providing quieter and smoother operation.
  • Multiple teeth in mesh at any moment provide high load capacity and efficiency.
  • Smaller-sized gears can achieve higher reduction ratios.

Important Considerations

  • The angled teeth create an axial load perpendicular to the gear axis, causing additional wear and heating on shafts and bearings.
  • Increases manufacturing cost because the cutting process is harder and more time-consuming.
MANUFACTURING PROCESS

Helical Gear how is it manufactured?

01 / METHOD

Milling

The feed angle of the cutter must match the gear's helix angle. Smooth and complex helical gears can be produced.

02 / METHOD

Turning

The gear blank rotates while the cutting tool advances at the helix angle to produce the desired cross-section.

03 / METHOD

Cutting

The gear cross-section is extracted using laser, plasma, water-jet or wire EDM methods.

04 / METHOD

Casting

Molten metal is poured into a mold to produce complex helical gears.

TECHNICAL INFO

Helical Gear calculation formulas

Symbol Name Formula Definition
m Module m = D / Z Ratio of pitch circle diameter to number of teeth (mm)
D Pitch Circle Diameter D = m × Z Diameter of the pitch circle (mm)
Da Tip Diameter Da = D + 2m × cos(α) Diameter of the tip circle (mm)
Df Root Diameter Df = D − 2 × 1,166m × cos(α) Diameter of the root circle (mm)
t Pitch t = π × m / cos(α) Distance between two adjacent teeth (mm)
h Tooth Depth h = hb + ht Distance between the tip and root of the tooth (mm)
α Helix Angle — Angle of the tooth flank relative to the gear axis (°)
AREAS OF USE

Helical Gear in which sectors is it used?

Helical gears can transmit motion and power between parallel or crossed shafts. They are widely used in high-speed and high-load applications where noise must be minimized.
General Machinery
Food Machinery
Steel Industry
Reduction Gearboxes
Steel Rolling Mills
Pharmaceutical Industry
Construction Machinery
Rubber Industry
Compressors
Conveyors
Mining Industry
Mixers
Automotive Transmissions
Packaging Machinery
Printing Machinery
Pumps
Defense Industry
Marine
Sugar Industry
Textile Industry
Cement Industry
GALLERY

Production samples

Helical Gear
RELATED PRODUCTS

Other gear types we manufacture

Spur Gear
Spur Gear
Herringbone Gear
Herringbone Gear
Internal Gear
Internal Gear

Helical Gear request a manufacturing quote today.

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