Unique Transmission (India) Pvt. Ltd. Lal Bazar, Kolkata, West Bengal

First introduced in the country in late 6qs-now available in a vast range of sizes for nominal torque ratings upto 145000 nm, also available in flange mounting design for direct attachment to flywheels of all well known makes in models of diesel engines and in spacer design.   Key Features   Highly Flexible and resilient Absorbs large Misalignment Low torsional stiffness Dampens shock & Vibration Flexible element easily replaceable in site Ideally suitable for Diesel Engine Drives , Fans , Mills , Compressors ,Rolling Mills Pumps, conveyors , DG Sets. Available for reputed makes of Diesel Engines and compressors. Custom Design for special Requirements Torsional Vibration Calculation on request No Lubrication . Minimum Maintenance No expensive downtime. Flexible element is made of Rubber reinforced with Nylon Chords. Available in Series PH, PX, TC & U PH Series has largest range. These have flexible member firmly bolted to clamping elements. There is no possibility of Tyre slipping out even in case of imperfect installation. Available for Maximum torques upto 420000 Nm Coupling Diameter upto 1250 mm. Couplings with Brake Drum available. Also available with magic Grip Bushing for Quick fitment & removal.

Pin Bush Flexible Bush Type Couplings are designed for lower stresses on the rubber bushes and pins. Greater flexibility and life compared to other types of pin bush couplings is assured. The Standard range covers torque rating upto 15000 Kg. M.  

Metaflex Flexible Laminated Disc (Diaphragm/Membrane) Couplings are latest generation Couplings. Disc Packs of Series 80 range are unitized and are specially shaped to give flexibility & pure tensile loads for transmission of torque.     The Unitised design of disc packs permits easy assembly/disassembly without having to deal with large number of separate discs and washers.   The couplings can be supplied to meet API 610 /API 671 requirements. Various special designs are available to suit varied needs.   As our Prime product is “Metaflex”, all metal  flexible disc coupling, this is a much superior product than other couplings and is being used as a preference by several end users in refineries, petrochemical industry, Power plants , Pump OEMs , Fan OEMs , Compressor OEMs, etc.  Moreover despite having great quality track record we are able supply the metaflex couplings/flexible disc coupling at a competitive price compared to our main competitors that comprise of John Crane, Thomas Rexnord, Flender,  TB Woods , Bibby Transmissions and Esco Couplings.   Our metaflex couplings are equivalent to   Metastream couplings marketed by John Crane; flexible disc couplings sold by Thomas Rexnord; Arpex couplings sold by Flender; Form-Flex couplings sold b y TB Woods; High Performance Disc Couplings sold by Bibby Transmissions; and flexible disc couplings sold by Esco Coupling.   We are the leading source of exporting couplings from India worldwide as well as serving the Indian market . Naturally when an end user, an OEM or a distributor wants to import couplings from India they rely on Unique Transmission (India) Pvt Ltd. Export of couplings is a key specialization for us and we are actively growing our exports every year.We export high quality product that can be securely transported through air/sea cargo at the choice of our clients in a time and cost efficient manner. Besides having the one of the best design, quality assurance and reliability record for several years our prices make our product one of the most economical product for our clients. In a nutshell we offer end users, OEMs and distributors the best value for money proposition for exporting couplings from India. Our large manufacturing capacity allows us to make high quality bespoke and standard products for our clients globally. 

Unique gear couplings is a range to cater for torque ratings upto 114000 nm with triple crowning on gear teeth provide a most reliable and economic solution to many drive requirements.

Unique gear couplings is a range to cater for torque ratings upto 114000 nm with triple crowning on gear teeth provide a most reliable and economic solution to many drive requirements. Superior sealing and higher bore capacities are features of these couplings, also available in spacer design, floating drive shafts with solid or light weight tubular intermediate shafts and with shifter arrangement for manual disengagement of drive, piloting on tooth ensures greater concentricity/better dynamic balance.   Key Features   Teeth Curved as well as barreled Improved Seals – Perform much better than O rings Full Teeth engagement – Reduces uneven wear Piloting on Teeth OD – Ensures better dynamic balance Higher Bore capacities Compact Wide Range – Full Gear , Semi Gear , Spacer Couplings Full Floating & Semi Floating Shafts

Unique gear couplings is a range to cater for torque ratings upto 114000 nm with triple crowning on gear teeth provide a most reliable and economic solution to many drive requirements. Superior sealing and higher bore capacities are features of these couplings, also available in spacer design, floating drive shafts with solid or light weight tubular intermediate shafts and with shifter arrangement for manual disengagement of drive, piloting on tooth ensures greater concentricitybetter dynamic balance.

Metaflex Floating Shafts are ideally suitable for connecting machines relatively far apart . Typical uses are Paper Machinery Drive , Vertical Pump Drive, etc. Shafts are available in fixed Length as well as adjustible Lengths with Shrink Disc/ Splines. Hollow tubes are used to fabricate shafts. Shafts are light weight and require very little maintenance. Lubrication is required only for intermediate bearings. Tube Size is selected to ensure operation well away from critical whirling speed.

Flexilink coupling is used to connect shaft to shaft or flange depending on it's type. Its unique feature is that it can be removed in situ without disturbing connecting machines.  

Metaflex Flexible Laminated Disc (DiaphragmMembrane) Couplings are latest generation Couplings. Disc Packs of Series 80 range are unitized and are specially shaped to give flexibility & pure tensile loads for transmission of torque. The Unitised design of disc packs permits easy assemblydisassembly without having to deal with large number of separate discs and washers. The couplings can be supplied to meet API 610 API 671 requirements. Various special designs are available to suit varied needs. As our Prime product is “Metaflex”, all metal flexible disc coupling, this is a much superior product than other couplings and is being used as a preference by several end users in refineries, petrochemical industry, Power plants , Pump OEMs , Fan OEMs , Compressor OEMs, etc. Moreover despite having great quality track record we are able supply the metaflex couplingsflexible disc coupling at a competitive price compared to our main competitors that comprise of John Crane, Thomas Rexnord, Flender, TB Woods , Bibby Transmissions and Esco Couplings.

Metaflex Drive Shafts are ideally suited for connecting machines which are far apart. Distances upto 4000 mm in single span and upto 20000 mm in multiple spans have been covered by our Drive Shaft couplings.  

Unique Double Diaphragm Couplings use highly flexible Diaphragms. These consist of Rubber reinforced with Nylon Chords. Further at inner and outer bolting PCD Steel ring reinforcements are used. Torque ratings are determined after extensive tests and have large service factor against rupture. Rupture torque is typically 6 to 10 times rated torque. At nominal torque torsional angle is large - typically 10 to 15 degrees. Torsional Stiffness is low. This results in low critical speeds , usually below operating speed. Further torsional stiffness varies with load. At lower loads stiffness is lower. The Feature allows operation at wide range of speeds. Favourable damping characteristics ensure vibration amplitude are limited at resonance. Design Series - Series 1000 , Series 1100 are for Direct Flywheel mounting. Series 1750 are for shaft to shaft connection. Series IP are suitable for diesel drives in association with cardan shaft - highly popular for Diesel driven vertical Turbine Fire Pumps.   Selection     First selection is based on nominal torque , Max bore , Max speed , end fitment. Next for Diesel / Compressor drives in particular - TV analysis is performed to check that vibratory torques are within acceptable limits in operating speed range. If necessary several sizes are tested - to obtain best match Unique" would be glad to perform TV analysis on request. For this normally we would require Mass elastic data , Torque - Crank angle data ( for compressors)     Note:   Many alternative custom made designs can be offered to suit specific requirements. Torsional stiffness may vary + - 20 % of catalogue figures.    Key Features:   Highly Flexible and resilient Low Dynamic Torsional Stiffness Torsional Stiffness varies with Load Isolates and dampens Torsional Vibration Ideally suitable for Diesel Engine Drives, Compressors, Rolling Mills, DG Sets Pumps Available for reputed makes of Diesel Engines & compressors. Custom Design for special Requirements Torsional Vibration Calculation on request No Lubrication . Minimum Maintenance

Unique Double Diaphragm Couplings use highly flexible Diaphragms. These consist of Rubber reinforced with Nylon Chords. Further at inner and outer bolting PCD Steel ring reinforcements are used. Torque ratings are determined after extensive tests and have large service factor against rupture. Rupture torque is typically 6 to 10 times rated torque. At nominal torque torsional angle is large - typically 10 to 15 degrees. Torsional Stiffness is low. This results in low critical speeds , usually below operating speed. Further torsional stiffness varies with load. At lower loads stiffness is lower. The Feature allows operation at wide range of speeds. Favourable damping characteristics ensure vibration amplitude are limited at resonance.

Metaflex Drive Shafts are ideally suited for connecting machines which are far apart. Distances upto 4000 mm in single span and upto 20000 mm in multiple spans have been covered by our Drive Shaft couplings.

Pin Bush Flexible Bush Type Couplings are designed for lower stresses on the rubber bushes and pins. Greater flexibility and life compared to other types of pin bush couplings is assured. The Standard range covers torque rating upto 15000 Kg. M.

UNIQUE Flexible Cardan Shafts are suitable for connecting equipment which, are far apart and/or substantially off-set from each other. Typical applications include all types of rolling mills, vertical pumps, cooling towers etc. The standard range covers continuous torque rating upto 2540 Kg. M.  

We are offering metaflex coupling. metaflex flexible laminated disc (diaphragmmembrane) couplings are latest generation couplings. Disc packs of series 80 range are unitized and are specially shaped to give flexibility & pure tensile loads for transmission of torque. the unitised design of disc packs permits easy assemblydisassembly without having to deal with large number of separate discs and washers. the couplings can be supplied to meet api 610 api 671 requirements. Various special designs are available to suit varied needs