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Planetary Gear Box


Introduction For over 22 years, we have been in designing, manufacturing a various range of gearboxes. Through the years of experience in the field on industrial drives the exactness of application and the proper selection of speed reducer gives a long peak performance. Those meet the needs in the core sector applications. We confirm our policy for continuous improvement and close co-operation with the customer in order to build more and more relation. Planetary Gearboxes are available in free input type, Hollow input type (suitable for standard B5 Flange Electric Motor), mounting will be flange and foot. Working Principle The Planetary Gearbox consisting of input Shaft Assaly, Sun Gear, Planet Carrier Assembly (Consists of Planets, Planet Pins and Rollers), Ring Gear, Output shaft, Casing (Foot/Flange) The input is from Sun gear and drive motion through the coaxial planet carrier assembly and Ring Gear. The rolling contact of the planets with the stationary Ring Gear provides the reduction Ratio. Hence high transmission is possible in small size and result is less weight and less cost. Constructions

  • Gears : All the gears are from high tensile alloy steel, hardened & ground profile tooth. Ring Gears are Induction Hardened. Tooth profiles optimized to gain max. root strength and minimize sliding contact to ensure high efficiency. The Gears rotates on needle roller mounted on case hardened pins.
  • Planet Carrier : Carriers are from high alloy steel casting or forging for strength and rigidity to ensure equal tooth loading on planet.
  • Shafts : Input and output shafts are toughened high alloy steel is resistant to bending and torsional stress.
  • Housing : Foot or Flange type Casings are of Cast Iron for strength and rigidity.
  • Service Life : The load ratings in the data sheets are based on 30,000 hours.

Shaft Mounted Gear Box


Shaft Mounted Gear Boxes are manufactured in standards 5:1, 12.5:1 & 22:1 and also in customized ratios based on requirements. The gear box shaft dimensions are interchangeable with reputed Indian and European manufacturers. Gears from case hardened alloy steel and O/P shaft from medium carbon steel or with or without key are housed in graded C.I housing. Flange motors to IEC/CFMA frames can be accommodated as integral unit when required.

Crane Duty Gear Box


Crane Duty Design Advantages

  • Maximum thermal efficiency is ensured by a large oil reservoir. Splash lubrication ensures ample and positive oil flow to all gears and bearings.
  • To ensure correct tooth contact, parallelism of bearing bores are maintained with precise tolerance.
  • High efficiency will achieve when loaded to full capacity of the units. The precision gearing and accuracy of bearing alignment preserves this high efficiency.
  • Housings : Housings are of fabricated steel structure, stress relieved. Suitable ribs are placed underneath the bearing seats for strength and the walls are of sufficient thickness to withstand the most severe stresses encountered during operation.
  • Gears And Pinions : The Gears are generated with highest accuracy on Hobbing Machine. The materials for the Pinion and Gear Wheel Rim are made of hard wearing special steel of graded strength to meet the individual load conditions. The selection of module, tooth profile and helix angle is made in conformity with speeds, ratios and load conditions to give maximum tooth contact and overlap, thus ensuring most favourable meshing and silent running.
  • Shafts : Shafts having Pinions cut integral are of heat-treated alloy steel bar or alloy steel forging. All other shafts are of heat treated Carbon Steel and are finished to high precision tolerance by grinding.
  • Lubrication : For normal speeds, splash lubrication is provided by the gears dipping in oil. Oil reservoir is of ample size to ensure cool operation. The oil level indicator located in the housing is to ensure a proper amount of lubricant in the housing.
  • Reduction Ratios : Single Reduction Units from 1.8:1 to 8:1,DoubleReductionUnits from 8:1 to 48:1 and Triple Reduction Units from 10:1to 160:1can be supplied.

Helical Gear Box


The teeth on helical gears are cut at an angle to the face of the gear. When two teeth on a helical gear system engage, the contact starts at one end of the tooth and gradually spreads as the gears rotate, until the two teeth are in full engagement. His gradual engagement makes helical gears operate much more smoothly and quietly than spur gears. For this reason, helical gears are used in almost all car transmissions. Because of the angle of the teeth on helical gears, they create a thrust load on the gear when they mesh. Devices that use helical gears have bearings that can support this thrust load. One interesting thing about helical gears is that if the angles of the gear teeth are correct, they can be mounted on perpendicular shafts, adjusting the rotation angle by 90 degrees.

  • Diameter : Up to 3800 MM
  • Module : .40 to 30 Module
  • Ground & Gear PCD = 25 to 550 mm pitch
  • Circular Diameter : Module = 1 to 10 Module

Creep Drive


Creep drives are used for overhead for achieving micro speed. These drives work on the planetary principle with differential drive system, along with thruster brake. Features

  • Easy to install
  • Totally Enclose construction
  • Long Working Life
  • Compact & Robust design
  • High efficiency
These gear boxes are available with reduction ratio 9.92:1. We are manufacturing the creep drive in brake drum diameter 160mm, 200mm, 250mm, 300mm & 400mm having torque rating from 100 N/M to 1200 N/M.

Spur Gear


Spur gears are the most common type of gear. The teeth on spur gears are 90° to the side, or face, of the gear. This requires that spur gears run parallel to one another. Spur gears can be arranged in long trains to meet required ratio reductions as well as maintained required size constrictions. The larger of two gears are typically called the gear, with the smaller one being a pinion. Manufacture Capacity

  • For Hobbing & Shaping
    • Diameter = 20 mm to 3800 mm
    • Module = .40 to 30 Module
    • Face Width = 1000 mm
      • For Ground tooth
        • PCD = 25 to 550 mm pitch circular diameter
        • Module = 1 to 12 Module
        • Face Width = 250 mm

Helical Gears


What are Helical Gears? Helical gears offer a refinement over spur gears. The teeth are cut at an angle, allowing for more gradual, hence smoother meshing between gear wheels, eliminating the whine characteristic of straight-cut gears. The advantage of helical gears is an increased load capacity due to the extended face width over spur gears. the use of helical gears is indicated when the application involves high speeds, large power transmission, or where noise abatement is important. The speed is considered to be high when the pitch line velocity (i.e. circumferential velocity) exceeds 5000 ft/min or the rotational speed of the pinion (i.e. smaller gear) exceeds 3600 rpm. Helical gears may also be ran at 90 degrees to one another by using gears with the same helix angle. Manufacture capacity

  • For Hobbing & Shaping
    • Diameter = 20 mm to 3800 mm
    • Module = .40 to 30 Module
    • Face Width = 1000 mm
      • For Ground tooth
        • PCD = 25 to 550 mm pitch circular diameter
        • Module = 1 to 12 Module
        • Face Width = 250 mm

Bevel Gears


What are Bevel Gears? 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 [1]. 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.
Manufacture capacity Diameter = 20 mm to 800 mm Module = .40 to 30 Module Face Width = 200 mm

Internal Gear


What are Internal Gears? A gear with teeth on the inner cylindrical surface. The teeth can be either spur or helical. In an involute-form, internal gear teeth have a concave rather convex shape with a thicker base than an equivalent external gear. This not only gives it greater tooth strength but due to a lower sliding velocity along the tooth profile, also makes them quieter.
Manufacture capacity Max. Internal Dia. = 1200 mm (Ext. Dia - 1400 mm) Module up to 14 Module Face width = 200 mm

Worms & Worm Wheels


What are Worm & Worm Gears? If the axles are skewed, that is, non-intersecting, then a worm gear can be used. This is a gear that resembles a screw, with parallel helical teeth, and mates with a normal spur gear. Worm gears are used when large gear reductions are needed. It is common for worm gears to have reductions of 20:1, and even up to 300:1 or greater.
Manufacture capacity Worm Wheel Diameter up to 1500 mm Module up to 20 Worm Diameter up to 300 mm Module = 1 to 20 Minimum CD of Worm & Worm Wheel = 28 mm by Tangential Method.



What are Racks & Pinions? Torque can be converted to linear force by a rack and pinion. The pinion is a spur gear, and meshes with a toothed bar or rod that can be thought of as a sector gear with an infinitely large radius of curvature.
Manufacture capacity Length = 550 mm Module up to 6 Face Width = 120



We manufacture Sprockets as per customer requirements, in following range Manufacture capacity Max. Dia. = 3800 mm Pitch = 1/8” to 3” Face width = 1000 mm

Spur Pinion Gears


Spur Pinion



Worm Worm Wheel


Helical Gear


Worm Wheel


Centre Lathes


Spur Gear


Also Deals In

  • Automotive Gear Box
  • Automotive Gears
  • Drive Gear
  • Engine Gear
  • Gear Box Parts
  • Gear Boxes
  • Internal Gears
  • Pinion Gears
  • Spur Gears
  • Worm Gearbox
  • Worm Gears
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