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Axle shafts are heavy-duty, load-bearing components used in motorized vehicles.  Axle shafts are primarily responsible for transferring the transmission’s rotational force and power to make the vehicle move. Axle shafts allow vehicles to roll and facilitate controlled movement of their wheels. Without reliable drive shafts, the wheels of the vehicle wouldn’t move properly or at all. Axle shafts typically connect the differential to the epicyclic gears on a construction (mechanical) rigid hauler and connect the electric motor to the single or double stage epicyclic gears on a mining rigid hauler.

Project & Design:

  • Rigid Hauler Trucks ranging from 40 tons to 120 tons (mechanical rigid haulers) and 150 tons to 400 tons (electric drive rigid haulers). 

  • Parallel-Sided or Straight-Sided Splines per the following standards: Involute Splines per ANSI, ISO or DIN standards, Serrated Splines per DIN, IS, JIS standards.


Axle Shaft design
Parallel Shaft Reducers

Parallel Shaft Reducers, also known as Parallel Shaft Reducer Gearboxes, are where the output shaft speed is lower than the input/motor speed.  Gear speed reducer motor shaft and reducer output shaft are on parallel planes. This allows them to take up less room than coaxial reducers and have high power and torque outputs. Parallel Shaft Speed Reducers are produced in a variety of sizes, brands, and styles, and can be custom or standard builds. They are a great choice for continuous duty applications.  Parallel Shaft Speed Reducers come in three main gear types: Spur, Helical, and Double Helical. Each gear type comes with its own advantages and costs. Spur gears are most common, and also typically most affordable, while Helical and Double Helical gears tend to be more expensive, they are quieter and more powerful.  Parallel Shaft Reducers can have either a single reduction stage or multiple stage reductions, depending on design requirements.

Parallel Shaft Increasers are opposite to the reducer in which the speed of the output shaft is increased relative to the input/motor speed.

Project & Design:

  • Multiple gear reducers and increasers have been designed to accommodate various horsepower (10 hp to 4,000 hp) and speed requirements (Reducer: 4000 rpm to 250 rpm, Increaser: 70 rpm to 30,000 rpm).

  • Spur or Helical gears, single to quadruple stages, tapered roller bearings.


Right angle gear motors have a motor shaft and output shaft of the speed reducer which are 90° from each other. These two shafts may cross on a single or double parallel plane, resulting in an axial motion. In terms of design, different types of tooth as well as combining different kinds of gears would be possible to achieve said gear disposition.  These types of gear motors are perfect for applications where space restriction is a major concern. Thanks to its compact and space-saving design, its utilization makes achieving the right amount of torque, speed, and efficiency in tight spaces possible, offering an even better performance.

Project & Design:

  • Multiple right-angled gear reducers and increasers have been designed to accommodate various horsepower (10 hp to 400 hp) and speed requirements (Reducer: 2000 rpm to 300 rpm, Increaser: 25 rpm to 1,800 rpm).

  • Spur or Helical gears, single to quadruple stages, tapered roller bearings.

Right Angled Shaft
EPICYCLIC GEAR TRAINS (Planetary, Star or Solar Configurations)

A planetary gear reducer is a type of planetary gearbox that aims to transmit a maximum torque in the most compact form. It decreases the speed of revolutions of a motor and ensures torque. The planetary reducer is composed of a sun gear at the center of the assembly, a ring gear at the outside of the assembly, and planetary gears which contact and rotate between the sun and rings gears. The planetary gears are connected to a planetary arm which. The various gears are arranged so that they rotate at different speeds and can be used to adjust the input rotation speed and the output rotation speed.

What are the advantages of planetary reducer?

  • High torque can be achieved, and the torque load can be distributed to different gears. With a small volume, the planetary reducer can withstand higher torque than other reducers.

  • Cost savings. With the planetary reducer, the application can use a motor with a low power, greatly reducing the overall cost of the configuration.

  • High precision. Most planetary reducers produced today have extremely high precision.

  • Low noise. Even larger planetary gears have very low noise levels during operation.

  • High efficiency. The loss of power with a planetary gear train is small, so transmission efficiency can reach up to 97%.

  • High reduction ratio. Through the combination of multiple stages, higher reduction ratios can be attained.

  • Wide range of applications. Due to the high torque potential, high precision, high reduction ratio and compact characteristics of planetary reducers, they have unlimited potential uses in industrial applications.

Project: Sugar Mill Epicyclic Drives – 200 Hp to 4,000 Hp
  • Design A: 3-stage simple planetary spur gears, spherical bearings, cylindrical bearings, tapered roller bearings, ball bearings.

  • Design B: 1-stage parallel shaft spur gear w/ 2-stsage simple planetary spur gears, spherical bearings, cylindrical bearings, tapered roller bearings, ball bearings.

Project: Rigid Hauler – Mechanical Drive – 40 tons to 105 tons

  • Design:  1-stage simple planetary spur gears, tapered roller bearings.

Project: Rigid Hauler – Electric Drive – 130 tons to 400 tons

  • Design:  2-stage compound planetary spur gears, tapered roller bearings.

Project: Aerospace – Landing Gear Actuator

  • Design:  Various actuators using both spur and helical gear components, deep-groove ball bearings, cylindrical bearings and tapered roller bearings.

Project: Military/Defense – Automatic Air Stair

  • Design:  1-stage simple planetary spur gears, tapered roller bearings, deep-grooved ball bearings, spiroid gears for anti-backlash locking system

Project: Wind Turbine Gearbox - 1.5 Megawatt & 2.0 Megawatt

  • Design:  2-stage compound planetary spur gears, tapered roller bearings.

Rack & Pinion design
Gear racks are utilized to convert rotating movement into linear motion. A gear rack has straight teeth cut into one surface of a square or round section of rod and operates with a pinion, which is a small cylindrical gear meshing with the gear rack. Generally, gear rack and pinion are collectively called “rack and pinion”.  Rack and pinions are used for lifting mechanisms (vertical movement), horizontal movement, positioning mechanisms, stoppers and to permit the synchronous rotation of several shafts in general industrial machinery.

Project & Design: 


Drawbridge - Rack and Pinion gears.


Automatic stair deployment and retraction for Military/Defense aircraft. Specific details are confidential.

Project: Military/Defense Aircraft

Design:  Multistage Spur gears, Rack & Pinion gears, Hirth (Face) gears, tapered roller bearings, cylindrical bearings, needle roller bearings.

Air Stair program
Worm shaft gear design
A worm gear is a gear consisting of a shaft with a spiral thread that engages with and drives a toothed wheel.  It changes the rotational movement by 90 degrees, and the plane of movement also changes due to the position of the worm on the worm wheel or gear.

Project: Sensor positioner in industrial machine.

Design:  Worm Shaft & Worm Gear.

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