Gear Manufacturing /

 

Nnationalgearrepair.com can repair and manufacture any size Gear & Pinion, including Helical, Double Helical, Herringbone, Split Herring bone, Bevel, Spiral Bevel, Spur Gears, Ring Gears, Eternal Ring Gears, Rack & Pinion, Worm Gears, Double Enveloping Worm Gears, Hypoid Gears, Screw Gears, Plus More!
We can cut Gears up to 30 feet in Diameter, at a considerable savings over OEM Manufacturer's pricing, with a 24 Month Warranty and the Quickest Turn Around Time in the Nation.
Once nationalgearrepair Manufactures a Gear set for you, we will provide you with all Certifications for Heat Treating and Carburization.

Hobb Cutters In Stock

High Speed & Low Speed Pinions

Precision Gear Grinding


Kiln Gear Repair & Manufacturing

Helical Pinion Gear Repair & Manufacturing

Spiral Bevel Gear Repair & Manufacturing

Spur Gear Repair & Manufacturing

Herringbone Gear Repair & Manufacturing

Double Enveloping Worm Gear Repair Double Enveloping Worm Gear Manufacturing

The double enveloping worm gear has a radial changing pitch diameter. This increases the number and amount of tooth shear area.

Double Helical Gear Repair Double Helical Gear Manufacturing

Double helical gear may have both left-hand and right-hand helical teeth. The double helical form is used to balance the thrust forces and provide additional gear shear area.

Face Gear Repair Face Gear Manufacturing

Face gears are a circular disc with a ring of teeth cut on one side. The gear teeth are tapered toward the center of the tooth. These gears typically mate with a spur gear.

Helical Gear Repair Helical Gear Manufacturing

Helical gear is a cylindrical shaped gear with helicoid teeth. Helical gears operate with less noise and vibration than spur gears. At any time, the load on helical gears is distributed over several teeth, resulting in reduced wear. Due to their angular cut, teeth meshing results in thrust loads along the gear shaft. This action requires thrust bearings to absorb the thrust load and maintain gear alignment. They are widely used in industry. A negative is the axial thrust force the helix form causes.

Helical Rack Gear Repair Helical Rack Gear Manufacturing

Helical rack gears are linear shaped and meshes with a rotating helical gear.

Herringbone Gear Repair Herringbone Gear Manufacturing

Spur Gears are the most common type used. Tooth contact is primarily rolling, with sliding occuring during engagement and disengagement. Some noise is normal, but it may become objectionable at high speeds.

Hypoid Gear Repair Hypoid Gear Manufacturing


Hypoid gears are typically found within the differential (rear axle) of automobiles. The gear arrangement allows the translation of torque ninety degrees. Hypoid gears are similar to spiral bevel gears except that the shaft center lines do not intersect. Hypoid gears combine the rolling action and high tooth pressure of spiral bevels with the sliding action of worm gears. This combination and the all-steel construction of the drive and driven gear result in a gear set with special lubrication requirements, including oiliness and anti-weld additives to withstand the high tooth pressures and high rubbing speeds.

Internal Ring Gear Repair Internal Ring Gear Manufacturing

Internal gear is a cylindrical shaped gear with the meshing teeth inside or outside a circular ring. Often used with a spur gear. Internal ring gears may be used within a planetary gear arrangement.

Rack and Pinion Repair Rack and Pinion Manufacturing



Rack and pinion gears are essentially a linear shaped variation of spur gears. The spur rack is a portion of a spur gear with an infinite radius.

Screw Gear (Crossed Helical Gear) Repair Screw Gear (Crossed Helical Gear) Manufacturing

Screw gears are helical gears of opposite helix angle will mesh when their axes are crossed.

Spiral Bevel Gear Repair Spiral Bevel Gear Manufacturing


Spiral bevel gears have a helical angle spiral teeth.

Split Herringbone Gear Repair Split Herringbone Gear Repair


Spur Gears are the most common type used. Tooth contact is primarily rolling, with sliding occuring during engagement and disengagement. Some noise is normal, but it may become objectionable at high speeds.

Spur Gear Repair Spur Gear Manufacturing


Spur Gears are the most common type used. Tooth contact is primarily rolling, with sliding occuring during engagement and disengagement. Some noise is normal, but it may become objectionable at high speeds.

Straight Bevel Gear Repair Straight Bevel Gear Manufacturing

Straight bevel gears have tapered conical teeth which intersect the same tooth geometry. Bevel gears are used to transmit motion between shafts with intersecting center lines. The intersecting angle is normally 90 deg but may be as high as 180 deg. When the mating gears are equal in size and the shafts are positioned at 90 degrees to each other, they are referred to as miter gears. The teeth of bevel gears can also be cut in a curved manner to produce spiral bevel gears, which produce smoother and quieter operation than straight cut bevels.

Worm Gear Repair Worm Gear Manufacturing


Worm gears teeth resembles ACME screw thread which mates with a helical gear, except that it is made to envelope the worm as seen along the worm’s axis. Operation of worm gears is analogous to a screw. The relative motion between these gears is sliding rather than rolling. The uniform distribution of tooth pressures on these gears enables use of metals with inherently low coefficients of friction such as bronze wheel gears with hardened steel worm gears. These gears rely on full fluid film lubrication and require heavy oil compounded to enhance lubricity and film strength to prevent metal contact.