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Resilient Couplings

Our Products

AR Series Resilient Couplings (Grid Couplings)

High-Torque Torsional Flexibility & Shock Absorption for Industrial Drives

AniGears AR Series Resilient Couplings are high-performance, torsionally flexible couplings designed to provide an optimum balance of shock absorption, torsional flexibility, and positive torque transmission.

They transmit power through a specially contoured spring steel grid fitted between two precision-machined hubs and enclosed within a lubricated steel cover.

The grid flexes under load, absorbing shocks and torsional vibrations while accommodating limited angular, parallel, and axial misalignments.

This design combines the advantages of both rigid and flexible couplings, offering smooth power transmission and protection for connected equipment from sudden torque fluctuations.

AniGears AR Couplings are engineered for quiet operation, long life, and fail-safe performance, making them ideal for medium to heavy-duty drives.

All metallic components are phosphated to resist corrosion and to ensure excellent lubrication retention.

AniGears Engineering Solutions, one of the top rresilient coupling manufacturer India, offers the AR Series Resilient Couplings (also known as spring grid couplings) that provide high vibration, shock, and alignment stress to heavy-duty machinery. Engineered in our West Bengal plant and sold all over the country from our Kolkata plant, the AR Series offers the same strength as a rigid coupling while still offering the flexibility of an elastomeric product.

Whether you are looking for what is a resilient coupling or the best coupling for shock load absorption industrial motor, the AR Series is designed for high-demand drives. Whether you need a resilient coupling for motor to gearbox connection or a high-pressure pump station, AniGears delivers reliable and low-maintenance power transmission.

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Selection Procedure

Easy Selection Steps

Follow our simple step-by-step process to choose the right product for your application, ensuring optimal performance and reliability.

01
Determine Service Factor (SF)
02
Calculate Design Power (Pₑ)
03
Select Coupling Size
04
Verify Shaft Bore Range
05
Confirm Speed and Misalignment
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Dimension Of Resilient Couplings

Detailed Measurements for Resilient Couplings

Accurate dimensions provided to ensure proper selection, installation, and reliable performance of your resilient couplings.

Coupling Size Rating H.P/RPM Clear Diameter OD (mm) Boss Length L1 (mm) Boss Length L2 (mm) Removal Space RS (mm) Gap G (mm) Cover Bore CB (mm) Safe Speed R.P.M Stock Rough Bore (mm) Max. Bore (mm) Approx Weight Kgs
AR-101 0.006 105.00 38.00 38.00 52.00 0.85 44.52 5650 10 29 3
AR-102 0.010 120.50 38.00 38.00 52.00 0.85 58.80 4750 12 38 4
AR-103 0.020 144.50 44.50 44.50 59.00 0.85 62.00 4450 16 41 5
AR-104 0.030 171.50 51.00 51.00 59.00 0.85 87.45 3400 16 57 9
AR-106 0.045 190.50 51.00 51.00 79.00 0.85 84.25 3200 16 54 11
AR-107 0.065 197.00 57.00 57.00 79.00 0.85 96.95 2950 16 64 15
AR-108 0.095 222.00 63.50 63.50 79.00 0.85 119.20 2500 25 78 20
AR-109 0.125 254.00 70.00 70.00 80.00 0.85 143.00 2150 25 92 27
AR-110 0.185 276.00 89.00 89.00 80.00 0.85 165.20 1900 25 108 43
AR-111 0.355 295.00 102.00 102.00 128.00 1.60 155.70 1800 38 102 54
AR-113 0.455 324.00 101.50 101.50 147.00 1.60 187.46 1650 50 123 63
AR-114 0.655 336.50 101.50 101.50 147.00 1.60 184.28 1550 50 121 72
AR-115 0.905 375.00 114.00 114.00 147.00 1.60 222.38 1350 50 146 104
AR-117 1.255 425.50 127.00 127.00 147.00 1.60 254.00 1200 50 167 149
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Installation Steps

Easy Installation Steps

  • Clean all components before assembly.
  • Mount hubs on shafts with proper key fits.
  • Align hubs and maintain specified spacing between them.
  • Insert grid into the hub grooves and pack with grease.
  • Fit cover halves ensuring gasket seals properly.
  • Tighten bolts evenly and diagonally.
  • Verify alignment post-assembly.
Maintenance

Easy Maintenance

  • Inspect grid periodically for cracks, wear, or deformation.
  • Replace seals if hardened or damaged.
  • Maintain proper grease level to ensure smooth, quiet operation.
  • Keep the coupling area free of dirt, oil, or solvents.
Features & Advantages

Key Features & Operational Benefits

As an ISO-certified resilient coupling manufacturer, AniGears builds its AR Series for demanding process industries that require continuous operation.

High Shock Load Absorption

The spring steel grid coupling for heavy duty drives is mounted in a hub slot, absorbs up to 30% of the shock loads during peak operation and absorbs the torsional vibrations before they reach your motor or gearbox.

Triple Misalignment Accommodation

Easily compensates for parallel offset, angular misalignment, and end-float without producing damaging radial bearing loads.

High Grade Materials

Made using heat-treated alloy spring steel for the grid element and high-density cast iron or forged steel for the hubs to provide long fatigue life in severe environments.

Corrosion-Resistant Finish

For standard grid couplings, developed by one of the phosphated grid coupling manufacturer India, standard components undergo industrial phosphating or Cathodic Electro Deposition (CED) coating to resist moisture, chemicals, and atmospheric wear.

Easy Maintenance and Grid Replacement

The split-cover design allows you to quickly get access to the grid element. Maintenance workers can inspect, lubricate, or replace the grid without disturbing the shafts or the prime mover.

Fail-Safe Operation

When the grid snaps, the hub teeth engage directly to help keep the drive in line, so the truck isn’t let run away.

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Working Principle: How Does a Grid Coupling Work?

Understanding how does a grid coupling work by the dynamic interaction between the spring element and the hub teeth.

  • Light Load: The grid of the spring contacts the hub slots at their outer edges. The leg of the grid swings wide to allow maximum torsional softness to absorb minor vibrations.
  • Heavy Shock & Peak Load: As load torque increases, the grid spring bends further, making contact with the curved hub teeth. The effective length of the grid shortens, and the coupling stiffness increases so peak power can be transmitted easily without breaking.
Specifications & Capabilities

Technical Specifications & Engineering Capabilities

AniGears is an ISO 9001:2015 torsionally flexible coupling manufacturer providing complete dimension interchangeability for standard industrial sizes.

Technical Parameter Specification / Performance Range
Torque Rating Range 100 Nm to over 140,000 Nm
Power Rating Range 0.45 kW to 1,500+ kW at 100 RPM
Bore Capacity Up to 260 mm (Stock, custom bores & keyways available)
Maximum Operating Speed Up to 6,000 RPM (Depending on size and dynamic balancing)
Grid Material Heat-treated alloy spring steel (Shot-peened)
Hub Material Graded Cast Iron / Forged Steel (EN8 / EN19 options)
Cover Type Horizontal Split (Aluminium/Steel) & Vertical Split Options
Angular Misalignment Up to 1.5°
Parallel Misalignment 0.3 mm to 0.5 mm
Axial Float ± 0.8 mm to ± 6.0 mm
Surface Finish Phosphated / CED-coated anti-rust finish
Applications

Resilient Coupling Applications & Industry Use Cases

The flexibility of the AR Series makes it a favourite for a variety of resilient coupling applications:

Pumps & Compressors

AniGears is a recognised resilient coupling manufacturer for pumps and compressors, eliminating motor-side torque spikes on high-pressure multistage pumps, slurry pumps, and air compressors.

Bulk Material Handling & Conveyors

Protects drive units on belt conveyors, bucket elevators, and apron feeders from high start-up inertia.

Crushers, Shredders & Ball Mills

Absorbs violent torque fluctuations common in mining, aggregate crushing, cement mills, and sugar cane shredders.

Fans, Blowers & Exhausters

Provides smooth power delivery and dampens aerodynamic resonance in large ID and FD fans.

Paper, Steel & Heavy Engineering

Manages reversing loads and extreme stress in continuous steel rolling mills, paper mill drives, and heavy marine drives.

Product Comparison

Product Comparison: Resilient Coupling vs Gear Coupling

When deciding between a resilient coupling vs gear coupling, you must consider whether you are looking for damping or maximum torque in a small space.

Feature / Metric AR Series Resilient (Grid) Coupling AG Series Gear Coupling Pin Bush Coupling
Primary Advantage Shock absorption & torsional flexibility High torque density in limited space Simple construction, no lubrication
Flexibility Element Flexing metallic spring grid Crowned gear teeth engagement Elastomeric rubber bushes
Torsional Stiffness Torsionally flexible (variable) Torsionally rigid Medium flexibility
Shock Load Resistance Superior: Dampens shock up to 30% Moderate: Transmits shock directly Good: Absorbs light-to-medium shock
Maintenance Grid replacement without moving hubs Requires unbolting & realignment Easy bush replacement
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How to Select the Right Resilient Coupling

To determine the proper coupling size for your application, follow this selection logic:

  • Calculate Design Power: Multiply your motor/driver rated power by an application service factor.
  • Determine Equivalent Power at 100 RPM & Select Coupling Size: Check your power rating at 100 RPM against the AR Series specification chart to verify that the unit meets or exceeds this value.
  • Verify Shaft & Bore Limits: If required, verify that the diameter of the driver and driven shafts are within the maximum allowable bore rating of the selected coupling size. Keyways and bore-to-size options are available upon request.
How to Install a Grid Coupling

Resilient Coupling Maintenance Guide & Installation Steps

Follow the following tips to install an AR Series unit for a long life of your equipment.

Clean & Inspect

Clean all shaft ends, hub bores, and keyways thoroughly.

Mount Seals & Hubs

Place cover seals onto shafts before mounting hubs. Fit keys, slide hubs onto shafts flush with shaft ends, and tighten setscrews.

Align Shafts

Check axial gap, radial/parallel alignment using a straight edge, and angular alignment using a feeler gauge across 90° intervals.

Pack Grid Grease

Apply high-grade, extreme-pressure (EP) coupling grease liberally into the hub slots.

Install Spring Grid

Insert the spring grid segments into the hub slots using a soft mallet until grid loops seat fully into the grooves.

Assemble Cover

Pack remaining grease over the grid loops, position cover seals and gaskets, and torque cover bolts to specified values.

Ease of Maintenance

Seals can be replaced without disturbing hubs. Lubrication through grease nipples simplifies periodic servicing.

Resilient Coupling Maintenance Guide

  • Monthly Check: Inspect cover bolts and check for visible grease leakage around seals.
  • Lubrication (Every 3,000 to 4,000 Hours): Refill coupling grease via cover fill plugs until fresh lubricant appears at the purge hole.
  • Annual Inspection: Isolate power; remove cover halves; wipe old grease off; check grid and hub teeth for fatigue or wear; realign as needed; re-pack with fresh EP grease.
Why Choose AniGears?

Why Choose AniGears Engineering Solutions?

AniGears is a leading spring grid coupling manufacturer and direct industrial supplier, including:

ISO 9001:2015 Certification

Every AR Series coupling is made with the highest quality materials and dimensions.

Quality Certified by NABL

Raw materials and finished products are mechanically tested at NABL-accredited labs for hardness, tensile strength, and dynamic balancing.

15+ Years Experience

Backed by over a decade and a half of manufacturing experience, our application engineers help you select, customise, and maintain the perfect drive coupling.

Strategic Kolkata Base & Pan-India Dispatch

As a leading resilient coupling manufacturer Kolkata and a flexible grid coupling supplier West Bengal, we have a Strand Road office conveniently located close to Howrah, Durgapur, Haldia, Asansol and nationwide logistics networks.

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FAQ's

Frequently Asked Questions

In addition to their high capacity to absorb up to 30% of peak shock loads, advantages of resilient couplings are also designed to damp out torsional vibrations and correct shaft displacements at angles, parallels, and axisymmetrically without increasing wear on bearings.

You can buy resilient coupling online India from AniGears, providing the required bore, keyway, and torque. Order directly with the manufacturer through our portal.

AniGears is a premier grid coupling supplier India, offering the AR Series grid coupling for heavy-duty applications across steel, mining, paper, power, and manufacturing.

AniGears is situated at 24 Strand Road and is the primary supplier of resilient couplings near Kolkata industrial area. We are also present in Howrah, Haldia, and West Bengal.

Yes. We offer couplings with pilot bores, finished standard bores, non-standard custom bores, taper lock bush arrangements and special keyways based on your machine shafts.

Our technical sales team will respond shortly with an AR series resilient coupling price and a delivery time.
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Engineering Solutions Catalogue

Download our comprehensive catalogue to explore Anigears’ full range of engineering products, including couplings, pulleys, and conveyor solutions. Get detailed specifications, dimensions, and application information to help you select the right solution for your industrial needs.

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