R Square Technologies · Authorised Nord-Lock Group distributor, Chennai

#1 Authorised Nord-Lock Distributor, Pan India

Nord-Lock wedge locking washers and bolting solutions. Supplied from Chennai to every part of India.

  • Since 2015In bolting solutions
  • Pan IndiaSupply from Chennai
  • 100% genuineNord-Lock products

Product demo

See how Nord-Lock wedge locking works

How does the Nord-Lock washer work?

Nord-Lock explains the wedge-locking principle in this short Q&A. A washer pair grips the bolt head and the joint with its teeth, so any movement can only happen between the cams. Because the cams are steeper than the thread, a bolt that tries to turn loose is pulled tighter instead.

Official Nord-Lock Group video, played from YouTube.

What the video shows

  • How the washer pair grips the bolt head and the joint
  • Why a bolt that tries to turn loose is pulled tighter instead
  • Locking by bolt tension, not by friction
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The wedge-locking principle

How Nord-Lock wedge locking works

Each Nord-Lock washer comes as a pair. Cams on the inside, teeth on the outside. The teeth grip the bolt head and the surface. The cams are steeper than the thread. So if the bolt tries to turn loose, the wedge pulls it tighter instead, and the turning stops.

  1. 01Fit the pairCams face each other. Teeth face the bolt head and the joint.
  2. 02TightenThe teeth grip both surfaces, so movement can only happen across the cams.
  3. 03VibrationThe cams ride up and the wedge pulls the bolt tighter. It cannot turn loose.
How the Nord-Lock washers work (animated video)

This 76-second animation explains the principle behind Nord-Lock washers. Their original wedge-locking technology secures a bolted joint even under severe vibration and dynamic loads. The wedge that forms under the bolt head or nut means the bolt cannot loosen by itself.

Official Nord-Lock Group video, played from YouTube.

Who we are

Your Nord-Lock partner in India

Reliable Bolted-Joint Solutions for Industrial Applications

R Square Technologies supports industrial customers seeking Genuine Nord-Lock® wedge-locking washers for suitable bolted connections across a wide range of industries in India.

Designed to help prevent unintended bolt loosening caused by vibration and dynamic loads, Nord-Lock Original Washers use a patented wedge-locking principle to maintain the integrity of correctly engineered bolted joints.

Technical Support for Your Application

The correct washer depends on the bolt size, fastener grade, joint design, preload, surface hardness, operating temperature, corrosion exposure and applicable equipment specifications.

R Square Technologies welcomes enquiries from OEMs, engineering companies, maintenance teams, EPC contractors and industrial procurement departments seeking suitable Original Nord-Lock Washer solutions.

Contact R Square Technologies to discuss your application, identify the relevant product requirements and request a quotation.

Nord-Lock Superbolt Boltight

Industry applications

Industry Applications of Nord-Lock® Washers

The following industry guide identifies typical bolted-joint applications where wedge-locking technology may be useful. Final suitability depends on the joint design, load, mating surfaces, washer material and installation requirements.

01

Automotive Industry

Vehicle manufacturers • Tier 1 and Tier 2 suppliers • EV manufacturers

Typical applications

  • Engine mounts, brackets and auxiliary equipment
  • Transmission and gearbox housings
  • Chassis and suspension-related assemblies, where approved by the design
  • Battery pack support structures and EV equipment enclosures
  • Motor mounts, electric drive units and industrial assembly fixtures
  • Manufacturing robots, conveyors and automated production lines
  • Vehicle testing rigs and engine test beds

Customer challengeVibration, cyclic loading and repeated operation can contribute to bolted-joint loosening.

Value propositionHelp secure selected bolted connections and improve assembly reliability.

02

Construction Equipment

OEMs • Earthmoving equipment • Heavy machinery manufacturers

Typical applications

  • Excavators, bulldozers and wheel loaders
  • Hydraulic equipment mounting assemblies
  • Operator cabin mounting structures
  • Engine and transmission support brackets
  • Equipment frames, access platforms and protective guards
  • Concrete mixers and batching equipment
  • Drilling rigs, compactors and road construction machinery

Customer challengeShock, vibration, impact and changing loads during operation.

Value propositionImprove the reliability of selected bolted connections exposed to dynamic loads.

03

Agricultural Equipment

Tractor manufacturers • Farm machinery • Agricultural implement makers

Typical applications

  • Tractors and power tillers
  • Combine harvesters and threshers
  • Seed drills and planters
  • Rotavators, cultivators and ploughs
  • Sprayers and fertilizer spreaders
  • Harvesting and crop-processing machinery
  • Agricultural conveyors and drive assemblies

Customer challengeRough terrain, changing loads, dust, moisture and repeated mechanical movement.

Value propositionSupport dependable bolted joints in equipment operating under demanding field conditions.

04

Wind Energy

Wind turbine OEMs • Component manufacturers • Wind farm maintenance

Typical applications

  • Selected nacelle equipment mounting joints
  • Generator and auxiliary equipment assemblies
  • Machinery frames and support brackets
  • Yaw and pitch system auxiliary assemblies
  • Service platforms, guards and access structures
  • Wind turbine manufacturing fixtures
  • Maintenance equipment and mechanical assemblies

Customer challengeLong service life, fluctuating operational loads, vibration and difficult maintenance access.

Value propositionImprove bolted-joint security in suitable assemblies and help reduce maintenance exposure.

05

Solar Energy

Solar EPC contractors • Tracker manufacturers • Inverter and equipment OEMs

Typical applications

  • Solar tracker drive and motor assemblies
  • Tracker gearboxes and mechanical linkages
  • Inverter and transformer equipment mounting
  • Electrical enclosure and equipment frames
  • Service platforms and machinery brackets
  • Solar manufacturing machinery
  • Selected mechanical connections in support equipment

Customer challengeOutdoor exposure, temperature cycles, wind-induced movement and maintenance requirements.

Value propositionHelp secure suitable bolted joints in mechanical equipment and selected assemblies.

06

Oil & Gas Industry

Upstream • Midstream • Downstream • Offshore equipment

Typical applications

  • Pump and compressor auxiliary assemblies
  • Skid-mounted equipment and machinery frames
  • Pipe-support structures and equipment brackets
  • Non-pressure-retaining machinery connections
  • Offshore mechanical equipment and access structures
  • Drilling and well-service equipment
  • Selected actuator and equipment mounting joints

Customer challengeVibration, corrosive environments, difficult access and the cost of unplanned downtime.

Value propositionSupport reliable bolted joints in suitable equipment, with material and environmental requirements considered.

07

Power Generation

Thermal power • Hydro power • Gas power • Nuclear power support equipment

Typical applications

  • Generator auxiliary equipment
  • Pump and fan assemblies
  • Motor and gearbox mounts
  • Conveyor and coal-handling machinery
  • Cooling-system equipment supports
  • Turbine auxiliary machinery and service equipment
  • Maintenance platforms and non-critical mechanical structures

Customer challengeContinuous operation, vibration and high consequences of equipment interruptions.

Value propositionHelp maintain the integrity of selected mechanical connections in power-generation equipment.

08

Mining & Mineral Processing

Mining OEMs • Quarries • Mineral-processing plants

Typical applications

  • Crushers and screening machines
  • Conveyor drives and support assemblies
  • Feeders, hoppers and material-handling systems
  • Pumps, gearboxes and motors
  • Drilling and excavation equipment
  • Processing plant machinery frames
  • Dust collection and auxiliary equipment

Customer challengeHigh vibration, impact loads, abrasive dust and continuous-duty operation.

Value propositionHelp reduce unintended loosening in selected machinery connections and improve maintenance efficiency.

09

Marine & Shipbuilding

Shipyards • Marine equipment OEMs • Vessel maintenance

Typical applications

  • Auxiliary engine equipment
  • Pumps, motors and gearboxes
  • Ventilation and cooling machinery
  • Deck machinery and winch assemblies
  • Mechanical support structures
  • Marine cranes and handling equipment
  • Selected equipment in offshore service vessels

Customer challengeVibration, saltwater exposure, corrosion and restricted maintenance access.

Value propositionSecure suitable bolted joints using an appropriately selected corrosion-resistant material.

10

Railways & Metro

Railway OEMs • Metro rail • Rolling-stock suppliers • Infrastructure contractors

Typical applications

  • Auxiliary equipment cabinets and mounting assemblies
  • Traction motor and gearbox auxiliary connections
  • Brake-system support equipment
  • HVAC equipment and underframe brackets
  • Railway maintenance machinery
  • Depot handling and workshop equipment
  • Selected railway infrastructure machinery

Customer challengeRepeated vibration, shock, cyclic loading and stringent maintenance requirements.

Value propositionImprove the security of suitable bolted connections where loosening can lead to costly inspection or maintenance.

11

Robotics & Industrial Automation

Automation integrators • Robotics OEMs • Special-purpose machinery builders

Typical applications

  • Robot base and pedestal assemblies
  • End-of-arm tooling and selected gripper connections
  • Servo motor and gearbox mounting
  • Automated transfer systems
  • Machine frames and linear-motion equipment
  • Pick-and-place and packaging machinery
  • Industrial assembly fixtures and test rigs

Customer challengeRepeated acceleration, deceleration and motion cycles can place demanding loads on bolted joints.

Value propositionSupport stable mechanical assemblies, positioning reliability and reduced maintenance interventions in appropriately designed joints.

12

Pharmaceutical & Medical Equipment

Pharma machinery • Medical equipment OEMs • Laboratory equipment makers

Typical applications

  • Tablet presses and capsule filling machines
  • Packaging, filling and labelling equipment
  • Mixing and processing machinery
  • Equipment frames and motor mounts
  • Laboratory automation systems
  • Medical device manufacturing machinery
  • Selected non-product-contact support assemblies

Customer challengeEquipment reliability, frequent cleaning, controlled environments and consistent production performance.

Value propositionHelp secure appropriate mechanical connections while meeting cleanliness, corrosion and validation requirements.

13

Food & Beverage Processing

Food-processing OEMs • Packaging plants • Beverage manufacturers

Typical applications

  • Conveyors and material-handling machinery
  • Filling, capping and bottling machines
  • Packaging and labelling equipment
  • Mixing and processing equipment
  • Pumps and motor assemblies
  • Washdown-area support equipment
  • Machine frames and maintenance fixtures

Customer challengeRepeated operation, washdown, cleaning chemicals and corrosion exposure.

Value propositionHelp improve bolted-joint reliability in suitable equipment, using a material and installation arrangement compatible with the cleaning environment.

14

Chemical & Process Plants

Chemical manufacturers • Fertilizer plants • Specialty chemicals • Process equipment OEMs

Typical applications

  • Agitator and mixer drive assemblies
  • Pump and compressor auxiliary equipment
  • Conveyor and feeder machinery
  • Motor and gearbox mounts
  • Equipment skids and structural supports
  • Plant maintenance and handling machinery
  • Selected mechanical connections exposed to corrosive environments

Customer challengeCorrosive atmospheres, vibration, chemical exposure and continuous operation.

Value propositionSelect a suitable Nord-Lock material for the environment and help maintain dependable mechanical joints.

Engineering note: Chemical compatibility must be verified for the actual medium, concentration, temperature and exposure conditions.

15

Textile & Paper Industries

Textile mills • Spinning mills • Paper mills • Printing and converting machinery

Typical applications

  • Spinning and winding machinery
  • Looms and textile processing machines
  • Rollers, drives and gearboxes
  • Paper machines and converting equipment
  • Printing and finishing machinery
  • Industrial fans and exhaust systems
  • Conveyor and material-handling systems

Customer challengeHigh operating speeds, repetitive movement, vibration and long production shifts.

Value propositionHelp secure suitable fasteners and reduce avoidable maintenance associated with loose joints.

16

General Machinery & Machine Tools

Machine-tool builders • CNC manufacturers • Industrial machinery OEMs

Typical applications

  • CNC machine housings and auxiliary assemblies
  • Motor, spindle and gearbox mounting
  • Injection moulding and extrusion equipment
  • Hydraulic power packs
  • Industrial presses and cutting machines
  • Assembly and testing machines
  • Special-purpose machines and production fixtures

Customer challengeAccuracy, repeated cycles, equipment vibration and the cost of downtime.

Value propositionImprove the reliability of suitable machine connections and support repeatable maintenance practices.

17

Warehousing & Material Handling

Warehouse automation • Logistics systems • Material-handling OEMs

Typical applications

  • Conveyor drive units and roller assemblies
  • Automated storage and retrieval systems
  • Pallet handling equipment
  • Industrial lift and transfer mechanisms
  • Sortation and distribution machinery
  • Loading equipment and dock machinery
  • Warehouse automation robots

Customer challengeRepeated starts and stops, mechanical movement and continuous material flow.

Value propositionHelp reduce loosening-related maintenance in selected equipment and improve operational continuity.

18

Telecommunications

Telecom infrastructure • Tower manufacturers • Network equipment suppliers

Typical applications

  • Selected antenna support assemblies
  • Telecom shelter equipment mounting
  • Cooling and ventilation equipment
  • Generator and power-system auxiliary assemblies
  • Equipment racks and brackets
  • Tower maintenance equipment
  • Network infrastructure support machinery

Customer challengeOutdoor exposure, wind-induced vibration, corrosion and difficult access.

Value propositionImprove bolted-joint security in suitable support and equipment assemblies.

19

Aerospace & Aviation

Aircraft ground equipment • Aerospace manufacturing • Aviation maintenance

Typical applications

  • Aircraft manufacturing fixtures and tooling
  • Ground support equipment
  • Maintenance platforms and service machinery
  • Test benches and industrial equipment
  • Selected non-flight-critical equipment mounting assemblies
  • Aerospace production machinery
  • Workshop lifting and handling equipment

Customer challengeReliability, traceability, demanding quality systems and stringent approval requirements.

Value propositionSupport secure mechanical connections in approved industrial and ground-support applications.

20

Defence & Military Equipment

Defence OEMs • Ground-support equipment • Military vehicle suppliers

Typical applications

  • Ground-support machinery
  • Vehicle auxiliary equipment and selected brackets
  • Power generation and field equipment
  • Mechanical handling systems
  • Equipment enclosures and mounting frames
  • Maintenance fixtures and test equipment
  • Industrial production machinery used by defence suppliers

Customer challengeHarsh operating environments, vibration, serviceability and stringent procurement specifications.

Value propositionHelp secure suitable bolted connections in applications that meet the required material, traceability and qualification criteria.

21

Water & Wastewater Treatment

Water authorities • Treatment plant EPCs • Pump and equipment OEMs

Typical applications

  • Pump and motor assemblies
  • Blowers and aeration equipment
  • Screening and sludge-handling machinery
  • Conveyor and dosing equipment
  • Treatment plant mechanical supports
  • Industrial valves and actuator mounting assemblies, where approved
  • Water-treatment equipment skids

Customer challengeMoisture, corrosion, vibration and continuous operation.

Value propositionSupport suitable bolted joints using an appropriately selected corrosion-resistant washer material.

22

Waste Management & Recycling

Recycling equipment OEMs • Municipal systems • Waste-processing plants

Typical applications

  • Industrial shredders and crushers
  • Sorting and screening machinery
  • Conveyors and feeders
  • Compactors and balers
  • Waste-handling vehicles and equipment
  • Recycling plant motor and gearbox assemblies
  • Material-processing equipment

Customer challengeImpact, shock, vibration, contamination and heavy-duty operating cycles.

Value propositionHelp maintain reliable bolted connections in selected equipment exposed to demanding mechanical loads.

23

Cranes, Hoists & Lifting Equipment

Crane OEMs • Hoist manufacturers • Industrial lifting equipment suppliers

Typical applications

  • Hoist and gearbox assemblies
  • Trolley and travel drive equipment
  • Motor and brake auxiliary mounting
  • Crane machinery frames
  • Selected service platforms and guards
  • Lifting-equipment manufacturing fixtures
  • Material-handling support equipment

Customer challengeRepeated load cycles, vibration, movement and high consequences of mechanical failure.

Value propositionImprove the security of suitable mechanical joints and support reliability-focused maintenance.

24

Construction & Structural Steel

Steel fabricators • Infrastructure contractors • Industrial building contractors

Typical applications

  • Machinery-support structures
  • Industrial platforms and access systems
  • Equipment frames and modular structures
  • Selected bolted steel assemblies
  • Construction machinery support connections
  • Maintenance access structures
  • Industrial plant auxiliary structures

Customer challengeMaintaining joint integrity under vibration, changing loads and long service periods.

Value propositionProvide an engineered wedge-locking solution where permitted by the structural specification.

25

Pumps, Compressors & Rotating Equipment

Pump OEMs • Compressor manufacturers • Rotating equipment service providers

Typical applications

  • Motor mounting bolts
  • Pump skid and baseplate assemblies
  • Compressor auxiliary equipment
  • Gearbox and drive mounting
  • Fan and blower assemblies
  • Lubrication-system equipment
  • Industrial package equipment

Customer challengeRotating machinery can generate vibration, and loosened connections may affect reliability and alignment.

Value propositionSecure appropriate mounting and auxiliary joints, subject to equipment OEM requirements and joint-design validation.

26

Electrical Equipment & Switchgear

Electrical OEMs • Panel builders • Transformer manufacturers

Typical applications

  • Motor and generator auxiliary assemblies
  • Industrial electrical equipment enclosures
  • Selected switchgear mounting arrangements
  • Transformer auxiliary equipment and support frames
  • Electrical machinery and testing fixtures
  • Cooling fan and ventilation assemblies

Value propositionImprove reliability of suitable equipment mounting joints, subject to electrical clearance, enclosure, thermal and OEM requirements.

27

Steel Plants, Foundries & Metal Processing

Steel producers • Foundries • Rolling mills • Metalworking equipment OEMs

Typical applications

  • Rolling mill auxiliary equipment
  • Material-handling conveyors
  • Furnace auxiliary machinery
  • Pumps, fans and industrial drives
  • Foundry handling and moulding equipment
  • Cutting, forming and metal-processing machinery
  • Machine frames and selected support assemblies

Customer challengeVibration, impact, heat exposure and demanding production cycles.

Value propositionSelect suitable wedge-locking washers for mechanical joints after checking actual operating temperature, loads and material compatibility.

28

Printing, Packaging & Converting

Packaging OEMs • Printing presses • Carton and flexible packaging plants

Typical applications

  • Printing press drive assemblies
  • Packaging and sealing machines
  • Labelling and filling lines
  • Film extrusion and converting machinery
  • Rollers and tension-control assemblies
  • Conveyor drives and automation systems

Value propositionSupport secure mechanical connections and reliable operation in high-cycle production equipment.

29

HVAC & Industrial Refrigeration

Chiller OEMs • HVAC manufacturers • Industrial refrigeration contractors

Typical applications

  • Compressor and motor mounting
  • Fan and blower assemblies
  • Chiller and cooling equipment frames
  • Refrigeration plant auxiliary machinery
  • Air-handling units
  • Cooling tower mechanical equipment

Value propositionHelp secure appropriate bolted joints exposed to vibration and recurring operating cycles.

30

Offshore & Marine Engineering

Offshore engineering • EPC contractors • Marine equipment suppliers

Typical applications

  • Equipment skids and machinery frames
  • Offshore auxiliary equipment
  • Mechanical handling and service equipment
  • Pump and compressor support assemblies
  • Access platforms and selected support structures
  • Equipment installed in corrosive marine environments

Value propositionHelp improve bolted-joint reliability with appropriate material selection and application-specific engineering qualification.

Discuss your application

The problem

Loose bolts stop machines

Vibration slowly turns bolts loose. A loose bolt can stop a line, damage a machine or hurt someone. Nord-Lock washers lock the bolt with tension, not friction. So vibration can’t turn it.

  • 01Stops the production line
  • 02Damages the machine
  • 03Puts people at risk

Why R Square

Why buyers choose R Square

Get a Quote
  • #1 authorised Nord-Lock distributor, pan India
  • 100% genuine Nord-Lock products
  • Help choosing the right washer for your bolt and job
  • Fast supply to any city in India
  • In bolting solutions since 2015

FAQ

Common questions

Is R Square an authorised Nord-Lock distributor?

Yes. We are an authorised distributor for the Nord-Lock Group in India.

Do you supply outside Chennai?

Yes. We supply across India.

Can Nord-Lock washers be reused?

Yes, in most cases, depending on operating conditions.

Industries

Industries we serve

  • Aerospace
  • Automotive
  • Agri Equipment
  • Construction Equipment
  • Defense
  • Power Sector
  • Mining
  • Marine
  • Machineries
  • Railways
  • Robotics & Automation
  • Oil & Gas
  • Pharmaceutical / Medical Equipment
  • Telecommunications
  • Wind Energy
  • Solar Energy
  • Warehousing
  • Waste Management
  • Construction Process Plants
  • Textile & Apparel

See applications by industry

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