We provide precision engineered Couplings to our clients. These high quality products can be availed at cost effective prices and in bulk orders and within specific time frame.
Flexible PIN Bush Coupling
Ellin bush Type Flexible Couplings absorbs shock loads and slight misalignment's and can transfer heavy torque at higher speeds. It consists of two half parts, one is heavy, holds the Rubber bushes another one light, holds the high tensile steel pins. The number of pins depends on the power to be transmitted. Range of power can be transmitted from 1 HP to 333 HP at 100 RPM and sizes from Btl to Btll
Pin bush Type Flexible Couplings absorbs shock loads and slight mis-alignment and can transfer heavy torque at higher speeds. It consists of two half parts, one is heavy, holds the Rubber bushes another one light, holds the high tensile steel pins. The number of pins depends on the power to be transmitted. Range of power can be transmitted from IHP to 337HP at 100 RPM and sizes from Bt1 to Bt11
Material : IS 210 (grade 20) Cast iron
Details for Selection :
HP to be Transmitted
Type of Load
Shaft Dia of drive and driven
* As per IS 2693-1989
Type of Driven Machine
Diesel Engine Single Cylinder
Diesel Engine Multi Cylinder
Generators, Blowers, Centrifugal Pumps, Compressors, Bottling and Canning machinery and Line Shafting
Standard range of Taper Pulleys confirming to ISO recommendations with unique EASY FIT(TAPER) fixing advantage and dual duty grooves to accommodate both V-belts and Wedge Belts of different sections like A/SPA.B/SPB, C/SPC,Z/SPZ,D,E and tailor made.
Lakshmi LHRC General Purpose Jaw Couplings with highly resilient rubber element in a range of 8 sizes from 70 to 280 can transmit from 0.35kw to 33kw at 100Rpm with the cost saving advantages of EASY FIT(TAPER) System.
We offer Spacer Coupling, which provides quick, easy disconnection from driving unit without disturbing drive shaft or piping. It permits removal of equipment from line in three simple steps. Only two sets of bolts need to be removed. Spacer member will drop out from both sides of the adapter.
Jaw Couplings with Flexible insert takes care angular , parallel and axial Misalignment . Simple in construction, easy and quick installation. Power can be transmitted from 0.25HP to 3.25 HP at 100 rpm.
Lakshmi Curved Tooth Flexible Gear Couplings are the result of several years of experience in the field of manufacturing of Mechanical Power Transmission.
Lakshmi Couplings are distinguished by their mechanical flexibility and compensation of Angular, Parallel and Axial* misalignment of the connected shafts. They are mainly used in Metal Rolling Mills, Paper Machinery, Cranes, Dredgers. Rubber and Plastic Industries, Cement Plants, Conveyors and Elevators, Compressors, Fans and Blowers, Screens and other general industries. Flexible Gear Couplings basically consist of two hubs, with crowned external teeth and two outer sleeves with internal spur teeth formed by gear shaper M/C.
Gear Hubs and the outer sleeves are manufactured from carbon steel and are hardened to the required degree. They are machined to fine tolerances for proper meshing of the gears as well as for inter-changeability.
The teeth of Gear Hubs are crowned and are generated by involute system. The amount of crowning and back lash values are so chosen as to ensure the best results in torque transmission, greater flexibility and smooth operations.
The internal teeth of the sleeves are generated on gear shaper to ensure correct profile. The coupling sleeves are joined together with high tensile steel bolts fitted using a gasket in between them.
The setting of special '0' Rings at the ends of coupling hubs prevents leakage of lubricants and entry of dust. The '0' rings can also with stand high degree of temperature uptp 120°C
Seal carriers have been provided for sizes from LGC 11 to LGC 19 facilitates inspection and replacement of '0' rings without disturbing the alignment.
HRC General purpose jaw Couplings with highly resilient rubber element in a range of 8 sizes from 70 to 280 can transmit from 0.35kw to 33kw at 100Rpm with the cost saving advantages of EASY FIT (TAPER) System.
Bush Type Flexible Coupling of the cushioned drive type transmits the torque through high tensile steel bolts to the machine input shaft. Highly developed rubber compounds are used in bushes to absorb shock loads, torsional vibrations and slight misalignments
Simple and compact in construction, it is capable of transmitting high torques at maximum speeds. It permits drive in either direction and requires neither lubrication nor adjustment after fitting
The flexible bushes remain unaffected by water, dust and atmospheric conditions
The flanges are manufactured with cast iron, Grade 200 of IS 210. They are available with Pilot Bore or can be supplied with Finish bore & keyway to suit requirements
Bore Diameter : 12.7 to 350 mm Power : 0.81 to 249 Kw at 100 rpm
Torque : 77 to 1,97,600 Nm
Options & Variants: 26 sizes available in standard version Brake Drum and Spacer Types also available. Alternative material like cast steel can be considered for standard flanges
Curved Tooth Flexible Gear Couplings are distinguished by their mechanical flexibility and compensation of angular, parallel and axial misalignment of the connected shafts
High power carrying capacity
These are designed for extensive applications in metal rolling mills, paper machinery, cranes, dredgers, rubber & plastic industries, cement plants, conveyors & elevators, compressors, fans & blowers, screens and other general industries
Flexible gear couplings basically consist of two hubs, with crowned external teeth and two outer sleeves with internal spur teeth. Gear hubs and the outer sleeves are manufactured from carbon steel and are hardened to the required degree. They are machined to fine tolerances for proper meshing of the gears as well as for inter-changeability
Suitable for grease/oil lubrication
Seal Carrier for easy maintenance & replacement of O-ring
Range : 19 sizes in Standard version with following specifications: Power : 11.5 to 12,700 Kw at 100 rpm Torque : 1100 - 12,00,000 Nm Bore Diameter : 20 - 600 mm
Tyre Couplings provide all the desirable features of an ideal flexible coupling, including Easy fit(Taper) fixing. They are 'torsionally elastic', offering versatility to designers and engineers with a choice of flange combination to suit most applications
The flanges are available in either 'F' or 'H' version Easy fit (Taper) fitting or bored to size 'B'
With the addition of a spacer flange, the coupling can be used to accommodate standard distance between shaft ends (DBSE) and facilitate pump maintenance
Tyres are available in natural rubber compounds for use in ambient temperatures between -500C to +500C
Polychloroprene rubber compounds are available for use in adverse operating conditions, e.g. oil or grease contamination and can be used in temperatures of -150C to +700C
FRAS Tyres are available for use when fire resistance and antistatic (F.R.A.S.) properties are required
Torque Range: Nominal: 12,606 Nm Max.: 42,740 Nm
Bore Range: Bore diameters upto 190 mm
Misalignment: Handles parallel, angular and axial displacements, either singly or in any combination. Can accommodate parallel misalignment upto 6 mm, angular misalignment upto 40 and end float upto 8 mm
Torsionally Soft: Cushions against destructive shock loads protecting the complete system, preventing expensive breakdowns and lengthens machine life
Free of Backlash: Does not create 'snatch' or take up of the drive
Installation: Requires neither special tools nor skilled labour to assemble. Alignment is quickly checked by placing a straight edge across outside diameter of flanges. The split flexible tyre is then positioned in the flanges and the screws tightened into place
Damping: Reduces vibration and torsional oscillations developed in internal combustion engines, the amplitude of which increases greatly at critical points in the speed range. lakshmi tyre coupling dampens these destructive vibrations
Maintenance: Because there are no moving parts, no lubrication is required. Periodic inspection of the tyre is all that is required
Environment: Use of natural or Neoprene rubber compounds makes the lakshmi Tyre Coupling suitable for use in most conditions. For fire hazard areas the F.R.A.S. tyre is recommended. This allows free flow of electricity between the two shafts to avoid static electricity build up
Lakshmi Tyre Couplings designed as per IS 14285:1995. The flanges are available in either F/H version of Easy fit bush fitting or bored to size B. With the addition of a spacer flange, the coupling can be used to accommodate standard distance between shaft ends and facilitate pump maintenance.
LakshmiTyre couplings can accommodate simultaneous maximum misalignment in all planes without imposing undue loads on adjacent bearings and the excellent shock-absorbing properties of the flexible tyre reduce vibrations and torsional oscillations. Handles parallel, angular and axial displacements, either singly or in any combination. They can accommodate parallel misalignment upto 6mm, angular misalignment upto 4°, and end float upto 8mm
Lakshmi Tyres are available in natural rubber compounds.for use in ambient temperatures between - 50°C to +50°C
Neoprene rubber compounds are available for use in adverse operating conditions e.g. Oil or grease contamination and can be used in temperatures of 15°C to + 70°C
Installation:- Requires neither special tools nor skilled labor to assemble. Alignment is quickly checked by placing a straight edge into across outside diameter of flanges. The split flexible Tyre is then positioned in the flanges and the screws tightened place. Reduces vibration and torsional oscillation developed in internal combustion engines, the amplitude of which increases greatly at critical points in the speed range, Lakshmi Tyre Coupling dampens these destructive vibrations.
Element replacement :- To replace flexible element simply loosen the clamping screws, remove the Tyre and replace with a new one. It is not necessary to move either driver or driven machine or coupling flanges.
Lakshmi Spacer Tyre Couplings (size It40- It140) complete with a spacer flange designed for use on applications to be able to move either shaft axially without disturbing the driven or driving machine. e.g..centrifugal pump rotors. Lakshmi Spacer Tyre Couplings are primarily designed for the standard distance between shaft end dimensions 100,140 and 180 mm.
Lakshmi LHRC General Purpose Jaw Couplings with highly resilient rubber element in a range of 8 sizes from 70 to 280 can transmit from 0.35kw to 33kw at 100Rpm with the cost saving advantages of EASY FIT (TAPER) System.
The crowing of the teeth allows the coupling to with stand parallel misalignment upto a maximum of 10.25 mm and angular misalignment upto a maximum of 1.5 per gear mesh. The coupling can also absorb axial displacement of the shafts upto a maximum of 3 mm.
Generally. For medium duty use a service factor of 1.5. For heavy duty use a factor of 2 and for extra heavy duty a factor of 3 should be used.
SELECTION OF THE COUPLINGS :
The following details are required for selection of the coupling :
1. Type of driven machine
2. Power absorbed by the driven machine and Peak load.
3 Speed and Diameter of the connecting shafts and space available for accommodating the coupling
4 Maximum misalignment to be compensated
5. Surrounding temperature.
6. Any other special feature of the drive.
Example : A gear couplings is required to transmit 200 KW from an Electric Motor running at 960 rev/mm to a CRUSHER Machine: Considering the peak load as 180% of full load, the Motor shafts as 100 mm and the CRUSHER shafts as 110 mm, select a suitable gear coupling.
a) Service factor : 2 (for heavy duty application)
b) Peak load : 180% of full load
c) Design Power: 200x180/100x2=720 KW
d) Power to be transmitted at 100 rev/min
e) Couplings size : By referring to the Table, coupling size LGC 4, has got a rating of 96 KW at 100 rev/min which exceeds the required power of 75KW. The bore range is 40 mm to 100 mm
As the shaft size required is more, Hence, size LGC 5 is selected for the application.
The coupling must be filled with grease or oil. It is recommended to use grease where the maximum temperature is within 80 C and for temperature above 80 C, oil should be used. When using grease it is suggested to fill the coupling completely with Lithium based grease with EP additives (NLGI-No.1 consistency). When the couplings is to be filled with oil, fill half the coupling with EP Gear Oil.
Tailor made Gear Spacer Couplings and Torsion Shaft Couplings are also manufactured & supplied as per requirements.