S V Hi-Tech Bearing (India) Private Limited

Disc Couplings are high-performance flexible shaft couplings engineered to transmit torque between two shafts while accommodating angular, axial, and parallel misalignment. Featuring stainless steel or alloy disc packs between precision hubs, these couplings deliver outstanding torsional rigidity, minimal backlash, and maintenance-free operation without lubrication. Their metal disc configuration ensures durability, reliability, and superior vibration dampening for demanding industrial environments.

Key Benefits:

• Handles angular, axial, and parallel misalignment for improved equipment longevity
• High torsional rigidity, zero backlash, and anti-vibration characteristics
• Maintenance-free operation with no need for lubrication
• Excellent stability, balance, and performance at high operating speeds
• Resistant to extreme temperatures, chemicals, and corrosive environments
• Available in single and double disc pack designs for different alignment needs

Industrial Applications

• Process Industry: Pumps, compressors, turbines, agitators
• Power Generation: Steam and gas turbines, generators, alternators
• Manufacturing: Printing presses, packaging machines, CNC equipment, mixers
• Robotics & Automation: Servo motors, actuation systems, precision motion control
• Chemical & Petrochemical: Reactors, high speed pumps, mixers
• Marine & Shipbuilding: Propulsion systems, cargo pumps
• Aerospace: Auxiliary machines, test stands

Popular Brands

• Lovejoy (a Timken brand)
• SKF
• TB Woods
• John Crane
• Ameridrives
• Coupling Corporation of America

Types of Disc Couplings

• Single Disc Couplings: For limited misalignment and compact installations
• Double Disc Couplings: Increased misalignment absorption and longer shaft spacing
• Spacer Disc Couplings: For shafts spaced farther apart; easier maintenance access
• Drop-In Spacer Couplings: Quick installation and service without moving hubs
• Close Coupled Split Spacer Couplings: Easy disc pack service without hub removal
• High-Speed Disc Couplings: For precision, high-speed, high-torque applications

Part Numbers (Reference Examples)

• Lovejoy SU Type, SX Type, SXC Type, SXCS Type
• SKF Disc Coupling GS 130, GS 150, GS 160
• John Crane TSC Type, Ameridrives Torsiflex-i, TB Woods Form-Flex
• Coupling Corporation Flexxor and UltraFlexx series
• DPU Series, DMU Series, DMUCC Series for specialized requirements

Gear Couplings are robust mechanical couplings designed to transmit high torque between two shafts that may be slightly misaligned. Featuring two hubs with external gear teeth meshing with a toothed internal sleeve, these couplings accommodate angular, parallel, and axial misalignment while providing high torque capacity. Their durable forged steel construction and precision-machined gear teeth ensure reliable power transmission in heavy-duty industrial applications.

Key Benefits:

• Transmits high torque with high torque-to-size ratio
• Compensates for angular, parallel, and axial misalignment
• Durable forged steel gear teeth ensure long service life
• High torque capacity for heavy-duty and high-speed applications
• Maintenance friendly with periodic lubrication requirements
• Helps reduce vibration and shock loads to connected machinery

Industrial Applications

• Steel & Metal Industry: Rolling mills, wire drawing machines, sheet metal processing
• Power Generation: Turbine shaft couplings, generator drives
• Mining & Mineral Processing: Crushers, grinding mills, conveyors
• Marine & Shipbuilding: Propulsion systems, deck machinery
• Pulp and Paper: Paper machines, refiner drives
• Cement Industry: Kiln drives, crushers, conveyors
• Heavy Machinery: Gearboxes, pumps, compressors

Popular Brands

• SKF
• Rexnord
• Timken
• Fenner Drives
• Bibby Turboflex
• Ameridrives

Types of Gear Couplings

• Full Gear Couplings (Double Engagement) – accommodates higher misalignment and torque
• Half Gear Couplings (Single Engagement) – flexible half with flanged rigid half
• Flanged Sleeve Gear Couplings
• Continuous Sleeve Gear Couplings
• Spacer Gear Couplings (Floating Shaft Assemblies)
• Lubricated and Maintenance-Free (Nylon Sleeve) Versions

Part Numbers (Reference Examples)

• SKF Series 100 Full Gear Couplings (e.g., GS100)
• Rexnord TLB Series (e.g., TLB140, TLB160)
• Timken Heavy Duty Gear Couplings (model 180 Series)
• Ameridrives Style 3300
• Fenner Drives Grid Couplings (various sizes)

Jaw Couplings are versatile mechanical couplings designed to connect two shafts while transmitting torque smoothly and efficiently. Comprised of two hubs with interlocking jaws and an elastomeric spider insert, they absorb shock, dampen vibration, and accommodate slight misalignment between shafts. Known for reliability and ease of maintenance, jaw couplings offer wear protection by preventing metal-to-metal contact, ensuring long equipment life and lower downtime in diverse industrial settings.

Key Benefits:

• Provides smooth torque transmission with vibration damping
• Absorbs shock loads and accommodates misalignment (angular, parallel, axial)
• Fail-safe design: operation continues even if elastomer element wears out
• Minimal maintenance required with easy elastomer replacement
• Resistant to dirt, oil, moisture, and temperature variations
• Available in a wide range of sizes, materials, and torque ratings

Industrial Applications

• Manufacturing: Pumps, compressors, conveyors, mixers
• Automotive: Engine and transmission couplings, assembly machines
• Material Handling: Conveyors, hoists, elevators
• Mining & Construction: Crushers, drilling rigs, heavy machinery
• Agriculture: Tractors, irrigation systems, harvesting equipment
• HVAC: Fans, blowers, air conditioning units
• General Industry: Machine tools, packaging machinery, printing presses

Popular Brands

• Lovejoy
• SKF
• Rexnord
• Timken
• Gates
• Element
• Asar Engineering Pvt. Ltd.

Types of Jaw Couplings

• Standard Jaw Couplings (L-Type) – Industry standard with nylon or rubber spider
• Aluminum Jaw Couplings (AL-Type) – Lightweight and corrosion resistant
• Stainless Steel Jaw Couplings (SS-Type) – Resistant to harsh environments
• Radially Removable Elastomer Jaw Couplings (SW-Type) – Easy maintenance and service
• High Torque Jaw Couplings for heavy-duty applications
• Custom elastomer materials and spider hardness options

Part Numbers (Reference Examples)

• L-120, L-150, L-200 (Standard nylon spider)
• AL90, AL120 (Aluminum hubs)
• SS100, SS125 (Stainless steel variant)
• SW140, SW180 (With radially removable spider)
• Custom sizes available on request for specific torque and bore requirements

SKF FRC Couplings are reliable and robust general-purpose jaw couplings designed to connect two shafts while cushioning moderate shock loads and damping low levels of vibration. These couplings accommodate incidental misalignment, ensuring smooth power transmission and reducing wear on connected equipment. With a virtually maintenance-free design and high load capacity, SKF FRC Couplings provide an economical yet durable solution for many industrial applications.

Key Benefits:

• Cushions moderate shock loads and reduces vibration
• Accommodates minor angular and parallel shaft misalignment
• Virtually maintenance-free with grease-lubricated elastomer spider
• High torque capacity with low noise operation
• Easy to install and replace with available pilot bored or solid bore hubs
• Durable cast iron hubs with elastomer inserts suited for various environments

Industrial Applications

• Manufacturing: Conveyor drives, general machine tooling
• Mining & Mineral Processing: Crushers, feeders, heavy-duty conveyors
• Material Handling: Rollers, hoists, belt conveyors
• Construction: Earthmoving machinery, concrete mixers
• Agriculture: Harvesters, tractors, irrigation systems
• HVAC Systems: Fans, blowers, air handling units
• Pumps & Compressors: Industrial pumps, compressors, vacuum pumps

Popular Brands

• SKF (Original Manufacturer)

Types of SKF FRC Couplings

• FRC Standard Jaw Couplings (RSB type – solid bores, pilot bored available)
• FRC Couplings with Elastomer Spiders (various hardness grades)
• Fire-Resistant and Anti-Static variants (FRAS version)
• Metric sizes ranging from small to large bore diameters
• Custom configurations tailored for specific torque and misalignment demandsPart Numbers (Reference Examples)

• FRC70RSB (bore size approx. 35mm)
• FRC150RSB (bore size approx. 70-75mm)
• FRC230RSB (bore size approx. 100-110mm)
• FRC330RSB (bore size approx. 150mm)
• FRAS FRC70FR (Fire-resistant model)

SKF FRC Couplings are widely recognized across industries for their robust performance, efficiency, and cost-effectiveness, making them a preferred choice for reliable power transmission and equipment protection.

A flexible coupling exists to transmit power (torque) from one shaft to another; to compensate for minor amounts of misalignment; and, in certain cases, to provide protective functions such as vibration dampening or acting as a “fuse” in the case of torque overloads
However, it is a flexible type of coupling and can be used for non-collinear shafts. Gear couplings accommodate angular misalignment of about 2 degrees and parallel misalignment of 0.25…0.5 mm.
Flexible couplings can accommodate some misalignment but should not be used as an excuse for poor alignment or lack of maintenance. Misalignment of flexible couplings can lead to excessive force on either the motor or the driven load. This can lead to failure of other components or large amounts of vibration.
Flexible couplings are usually used to transmit torque from one shaft to another when the two shafts are slightly misaligned. They can accommodate varying degrees of misalignment up to 1.5° and some parallel misalignment. They can also be used for vibration damping or noise reduction

Flexible Couplings are vital mechanical components designed to efficiently transmit torque between two shafts while accommodating misalignment, reducing vibration, and damping noise. With their ability to absorb shock loads and compensate for angular, parallel, or axial misalignment, flexible couplings protect connected machinery from wear and extend operational life. Known for their versatility and easy installation, these couplings are available in a wide range of materials and designs to suit diverse industrial applications.

Key Benefits:

• Efficiently transmits torque while absorbing vibrations and shocks
• Accommodates shaft misalignment (angular, parallel, axial) to protect machinery
• Reduces noise and vibration for smoother operation
• Easy installation and minimal maintenance required
• Available in numerous materials like steel, stainless steel, aluminum, and elastomers
• Custom designs available for heavy-duty or high-speed applications

Industrial Applications

• Power Generation: Turbines, generators, diesel engines
• Manufacturing: Conveyors, mixers, pumps, compressors
• Mining & Construction: Crushers, drilling rigs, hoists
• Agriculture: Tractors, harvesters, irrigation machinery
• Automotive: Engine couplings, transmission units
• Chemical & Petrochemical: Reactors, agitators, mixers
• General Industry: Electric motors, shaft-driven systems, packaging lines

Popular Brands

• Rathi Couplings
• SKF
• Lovejoy
• Fenner Drives
• Nishi Enterprise
• Dhara Industries
• Rexnord

Types of Flexible Couplings

• Jaw Flexible Couplings (L-Type, SW-Type, RRS-Type)
• Pin & Bush Flexible Couplings (B-FLEX, LBC, RC, RCT)
• Tyre Flexible Couplings (T, TO, RST)
• Grid Flexible Couplings (LGF)
• Flexible Gear Couplings (LFG, LHG)
• Spacer and Flange Flexible Couplings
• Elastomeric and Metallic Element Flexible Couplings

Part Numbers (Reference Examples)

• Rathi Jaw Flex Coupling L-120, SW140, RRS200
• SKF HRC 110, LGF 130, LFG 160
• Fenner Drives F Series Tyre Coupling, B-FLEX RB
• Nishi Pin Bush Coupling PB120, Tyre Flex T-100
• Dhara Aluminum Star Coupling ASC-75, Grid Coupling GC-150
• Custom units available for special industrial needs

A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both. In a more general context, a coupling can also be a mechanical device that serves to connect the ends of adjacent parts or objects.^[1] Couplings do not normally allow disconnection of shafts during operation, however there are torque-limiting couplings which can slip or disconnect when some torque limit is exceeded. Selection, installation and maintenance of couplings can lead to reduced maintenance time and maintenance cost.

This rotation - elastic transmission element consists of a spring assembly with 3 layers, with each layer comprising 3 single springs with square cross section. This spring assembly is linked by hubs / flanges - according to standard sizes.

Compact with high torque transmission, Bamatec couplings offer lower inertia. Higher speeds are also possible. Standard models (completely in steel) can be used between -40 to +100 ºC. Special couplings cater to temperature upto +300 ºC.

Torque capability – from 2.5Nm to 900 Nm, speeds upto 20,000 rpm and bore range from 4mm to 75mm Can be supplied in Stainless Steel, also.

 

Grid Couplings are heavy-duty flexible couplings designed for high torque transmission with excellent shock absorption and vibration damping capabilities. Featuring a grid spring element positioned between two precision-machined hubs, they provide resilience and torsional flexibility, minimizing wear on connected machinery and ensuring smoother operation. Easy to install and maintain, grid couplings reduce downtime by allowing grid replacement without shaft realignment.

Key Benefits:

• Absorbs shock loads and reduces vibration, protecting connected equipment
• Accommodates limited angular misalignment, ensuring smooth power transmission
• High torsional stiffness and torque capacity suitable for medium to heavy-duty applications
• Easy installation and maintenance with replaceable grid element
• Durable construction from high tensile alloy steel and precision hubs
• Cost-effective solution with reduced equipment wear and longer service life

Industrial Applications

• Manufacturing: Conveyor drives, mixers, pumps, compressors
• Power Generation: Turbine drives, generators, steam and gas turbines
• Mining & Mineral Processing: Crushers, hoists, conveyors, mills
• Chemical & Petrochemical: Agitators, reactors, pumps
• Marine & Shipbuilding: Propeller shaft couplings, deck machinery
• HVAC Systems: Fans, blowers, air handling units
• General Industry: Heavy machinery, gearbox drives, rolling mills

Popular Brands

• SKF
• Lovejoy
• Rexnord
• Timken
• TB Woods

Types of Grid Couplings

• Outer Grid Couplings (suitable for light to medium loads)
• Inner Grid Couplings (designed for heavy-duty, high torque loads)
• Horizontal Split Grid Couplings (easy maintenance, ideal for reversing drives)
• Vertical Grid Couplings (compact design suitable for high-speed pump applications)
• Spacer Grid Couplings (allowing greater shaft spacing)

Part Numbers (Reference Examples)

• SKF GS 110, GS 130, GS 150 (standard grid size series)
• Lovejoy G-225, G-300 (popular heavy-duty grid couplings)
• Rexnord TLB-140, TLB-160 (industrial grid coupling models)
• Timken 180 Grid Coupling Series
• Custom sizes and configurations as per OEM application requirements

SKF OK Couplings are an innovative range of shaft couplings that utilize a powerful oil injection method to create a secure, high-torque friction joint without the need for keyways, tapers, or thrust rings. This advanced hydraulic fitting technology allows easy, cold assembly and disassembly, reducing mounting time by up to sixteen times compared to conventional mechanical couplings. By transmitting torque and axial loads over the entire shaft surface, OK Couplings eliminate stress raisers common in keyed connections, ensuring reliability under shock and reversing loads.

Key Benefits:

• Quick and easy installation and removal without heating or special tools
• High torque transmission capacity, approximately 50% higher than traditional couplings
• Enables reduced shaft and coupling dimensions, saving material and cost
• Avoids costly reinforcement sleeves, especially beneficial for hollow shafts
• Long service life with minimal maintenance and downtime
• Can withstand heavy shock loads and fast direction changes

Industrial Applications

• Marine Industry: Propeller shaft connections
• Power Generation: Wind turbines, gas turbines, hydroelectric plants
• Heavy Machinery: Rolling mills, crushers, conveyor drives
• Diesel Engines: Shaft coupling for power transmission
• Pumps & Compressors: Industrial and process pumps
• Mining & Mineral Processing: High-torque shaft connections
• Manufacturing: Machine tools and gearboxes requiring precise shaft coupling

Popular Brands

• SKF (Original Manufacturer)

Types of SKF OK Couplings

• OKC Couplings (Standard Hydraulic Couplings for cylindrical shafts)
• OKF Couplings (Flange couplings for shafts with thrust collars)
• OKCX Couplings (Friction-coated hydraulic couplings for higher torque)
• OKFX Couplings (Friction-coated flange couplings with enhanced torque capacity)

Part Numbers (Reference Examples)

• OKC 125, OKC 140, OKC 180 (Standard shaft diameters)
• OKF 200, OKF 225, OKF 250 (Flange coupling sizes)
• OKCX 140, OKCX 180 (Friction-coated versions)
• OKFX 225, OKFX 250 (Friction-coated flange versions)