• Spiral Bevel gear teeth cut On Gleason no 16 spiral bevel gear generators
• Generally in Case Hardening steel, Hardened Tempered and Lapped.
• but also in other Alloy Steel, Case Hardened Steels, Mild Steel, Stainless Steel, Induction hardened, Cast Iron, or as specified
• for Automobiles and Industries
• Custom made as per Specifications, Drawing or Sample
• Teeth Size from 1 Module/10 D.P. to 10 Module/2.5 D.P.
• Outer Diameter from 24 mm/1" to 300 mm/12"
• Face Widths upto 250 mm/10"
• Required information for quotation:
  Material of Construction - steel, hardening and tempering required etc
  Teeth Specification - pitch, angle
  Outer Diameter
  Face Angle
  Bore size
  Key way size
  Hub size
  Any other requirement 

Where two axles cross at point and engage by means of a pair of conical gears, the gears themselves are referred to as bevel gears. These gears enable a change in the axes of rotation of the respective shafts, commonly 90°. A set of four bevel gears in a square make a differential gear, which can transmit power to two axles spinning at different speeds, such as those on a cornering automobile.

There are four basic types of bevel gears-

• Straight bevel gears: These gears have a conical pitch surface and straight teeth tapering towards an apex
• Zero bevel gears: This is similar to a bevel gear except the teeth are curved. In essence, Zero Bevel Gears are Spiral Bevel Gears with a spiral angle of zero
• Spiral bevel gears: The teeth are curved teeth at an angle allowing too contact to be gradual and smooth
• Hypoid bevel gears: These gears are similar to spiral bevel except that the pitch surfaces are hyperboloids rather than cones. Pinion can be offset above or below gear center, thus allowing larger pinion diameter, and longer longer life and smoother mesh, with additional ratios e.g., 6:1, 8:1, 10:1

The design of bevel gears results in thrust forces away from the apex. With the bearing limitations the gears have to be carefully designed to ensure that they are not thrown out of alignment as they are loaded.

Spiral Bevel Gear Set
Shown here:
8 module, 9 teeth pinion, 36 teeth gear, made in case hardening steel, gas carburised to case depth 1.2 mm, hardness 58-62 HRC, cylenderical ground, teeth lapped.
 
Spiral Bevel Gear Generation - Gleason No 16 spiral bevel gear generator