What is the torque range of AG Series gear couplings?

The torque capacity ranges from 1,100 Nm for AG-101 up to 1,470,000 Nm for AG-119.

What is the difference between ST and LT gear couplings?

ST couplings provide greater angular flexibility, while LT couplings provide higher torque transmission capacity.

What lubrication is required for AG Series gear couplings?

AG Series gear couplings require EP2 lithium grease filled to approximately 75 percent of the sleeve cavity volume.

AG Series Gear Coupling Manufacturer India

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AG Series Gear Couplings

AG Series High-Torque Gear Couplings

AniGears Gear Couplings (AG and EA Series) are high-performance, torsionally rigid, flexible shaft couplings designed to transmit high torque between rotating shafts operating under demanding industrial conditions.

Torque is transmitted through accurately machined, hardened, and crowned gear teeth on the hubs, which engage with internal teeth on the sleeves. This design permits limited angular, parallel, and axial misalignment while maintaining compact dimensions and high torque capacity.

The AG Series (FGC Type) represents the heavy-duty range of Full Gear Couplings, available in Short Teeth (ST) and Long Teeth (LT) configurations to suit different torque and alignment requirements.

AniGears gear couplings are precision-engineered and supplied fully CED-coated for corrosion protection and long service life.

Whether you need a standard setup or request a custom bore quote, our engineering team will be happy to help. As a leading gear coupling manufacturer and gear coupling supplier, we have 19 different sizes of gear couplings, from AG-101 to AG-119. Our products are designed to perfectly match industrial shafts in gear coupling India.

AniGears is one of the top gear coupling manufacturer India. Our advanced gear couplings are designed to provide maximum power transmission to heavy-duty industrial applications. Our AG Series gear coupling range provides excellent torque transmission and compensates for angular, parallel, and axial shaft misalignment. Our flexible gear couplings are ISO 9001:2015 certified to provide mechanical reliability.

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Dimension Of AG Series Gear Couplings

Detailed dimensions for reliable installation

Accurate and detailed dimensions to help you select the right AG Series Gear Coupling. Ensures proper installation, smooth operation, and reliable performance.

Coupling No / Size	Power at 100 rpm	Maximum Torque	Maximum Speed RPM	Hub Bore (mm)			Dimensions (mm)									Approx. Weight (Kg)		Clamping Bolt Size	No. of Bolts
Coupling No / Size	Power at 100 rpm	Maximum Torque	Maximum Speed RPM	Min.	Max Flex	Max Rigid	A	B	D	E	F	G	G1	H	J	Full Flex	Half Flex	Clamping Bolt Size	No. of Bolts
AG-101	11.5	1100	6700	14	55	60	170	115	17	55	5	78	90	110	65	11	10.5	M12 X 50	6
AG-102	28.5	2720	6100	20	60	75	185	145	17	70	5	85	110	125	85	16	15	M12 X 50	6
AG-103	51.5	4920	5200	30	75	90	220	175	20	85	5	107	130	150	105	26	26	M16 X 60	6
AG-104	96.5	9220	4500	40	100	110	250	215	20	105	5	138	160	178	125	41	42	M16 X 60	8
AG-105	150	14320	3950	46	120	130	290	240	25	115	10	166	185	204	140	63	63	M20 X 75	8
AG-106	230	21960	3500	50	125	150	320	260	25	125	10	176	215	230	155	86	87	M20 X 75	8
AG-107	390	37250	3250	60	145	170	350	290	25	140	10	208	240	260	175	120	120	M20 X 75	10
AG-108	515	49180	3000	70	165	200	380	330	25	160	10	230	285	290	200	165	170	M20 X 75	12
AG-109	644	61500	2600	80	200	220	430	340	25	165	10	270	315	332	210	210	220	M24 X 80	10
AG-110	930	88800	2300	100	230	260	490	370	25	180	10	315	370	390	230	310	320	M24 X 80	12
AG-111	1265	120800	2100	110	260	280	545	410	30	200	10	350	380	445	270	454	430	M24 X 90	12
AG-112	1600	152800	1900	150	300	310	590	490	30	240	10	404	420	490	300	630	590	M24 X 90	14
AG-113	2880	275000	1550	160	330	340	680	535	35	260	15	442	480	555	320	887	850	M30 X 110	14
AG-114	3980	380000	1400	200	370	370	730	575	35	280	15	500	520	610	340	1097	1050	M30 X 110	16
AG-115	4765	455000	1350	230	410	400	780	655	35	320	15	540	560	660	385	1440	1350	M30 X 110	18
AG-116	6800	650000	1150	260	450	460	900	720	45	350	20	630	650	755	425	2120	2000	M36 X 130	18
AG-117	9000	850000	1050	300	520	530	1000	820	45	400	20	720	750	855	490	3100	2900	M36 X 130	20
AG-118	11800	1120000	950	320	620	580	1100	920	55	450	20	820	820	950	535	4370	4050	M36 X 150	20
AG-119	15500	1470000	825	400	710	700	1250	1000	55	485	30	915	920	1050	560	5590	5200	M48 X 165	20

Installation Steps

Quick Installation Guide

Clean all components to remove dust, oil, and protective coating.
Mount hubs on shafts with proper key fits ensuring full key engagement.
Align hubs maintaining the required end float (axial gap) as per the dimension table.
Insert seals and fill coupling cavity with grease (EP2 type) up to 75% of volume.
Assemble sleeves over hubs ensuring full gear engagement.
Install gaskets and retaining rings, tighten bolts evenly in a diagonal pattern.
Check alignment using feeler gauge or dial indicator after assembly.

Maintenance

Routine Maintenance Guide

Inspect for grease leakage and seal wear periodically.
Replenish or replace lubricant as necessary.
For high-speed drives (>3000 RPM), maintain balance grade G 6.3 or better.
Maintain misalignment within permissible limits to prevent premature wear.

Features & Advantages

Why Choose This Product

High Torque Density

Compact and robust design ensures high torque transmission capability relative to coupling size.

Crowned Gear Teeth

External hub teeth are crowned to ensure uniform load distribution, reducing edge contact and stress under misalignment.

Double Engagement Flexibility

Allows simultaneous accommodation of angular, parallel, and axial misalignments without inducing excessive bearing load.

Short Teeth (ST)

Allow greater angular flexibility and are recommended for drives where misalignment variations or shaft deflections are expected.

Long Teeth (LT)

Provide higher torque capacity and improved load distribution due to larger contact area but allow slightly lower misalignment.

Torsional Rigidity

Metallic tooth engagement ensures positive torque transmission with negligible torsional wind-up, suitable for high-speed drives.

Ease of Maintenance

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

What is an AG Series Gear Coupling?

An AG Series gear coupling is a rigid and flexible gear coupling (FGC type – Full Gear Coupling) used to connect two rotating shafts. It transmits power through the friction of external hub gear teeth with inner involute teeth on a surrounding sleeve. The design provides greater power density than elastomeric couplings and can convey high torque in a small outer diameter.

ST (Short Teeth) vs. LT (Long Teeth) Configurations

For different mechanical demands we offer this line of industrial gear couplings in two tooth profiles: standard and oblique.

ST (Short Teeth) Variants: The teeth are made with a modified profile that is more angularly flexible and is useful on drives that experience frequent misalignment or dynamic load changes because the tension is distributed over a greater operating arc.
LT (Long Teeth) profiles: The LT profile offers a larger contact surface and high torque density, making it a perfect option for uniform, heavy-duty drives that require higher load ratings with little misalignment.

The AG gear coupling series is available in full-flex and half-flex versions. For long-term protection against environmental degradation, all of the components are coated with Cathodic Electro Deposition (CED) to protect against corrosion in chemical or humid environments. This series has a bore size from 14mm to 710mm, offering small motor connections and big motor drives. Check out our EA Series Gear Couplings for other heavy-duty options.

Industries We Serve

Industrial Applications: Sectors Served

As a gear coupling supplier, AniGears manufactures power transmission components for harsh environments.

Steel Plants

Installed at continuous rolling operations and high-speed drives to handle high temperatures.

Cement Plants

Powers large kiln drives and ball mills that suffer heavy shock loads.

Mining Equipment

Overload and shaft misalignment tolerance, especially on heavy excavators.

Conveyor Systems

Gear coupling for conveyor helps to connect the chains of a conveyor system for the long-distance bulk handling.

Crushers & Screens

High shock absorption and torsional stiffness during aggregate crushing.

Rolling Mills

Acts as a strong gear coupling for rolling mill stands, ensuring accurate torque transmission in small spaces.

Power Plants

Couple high-horsepower boiler feed pumps and turbine compressor drives.

Paper & Pulp Industry

Drives main drying cylinders where speed and low-vibration performance are critical.

Chemical & Fertiliser Plants

Depends on the CED-coated exterior to resist chemical fumes and acidic moisture.

Sugar Industry

Engineered for heavy-duty seasonal crushing with high torque peaking.

AG Series Construction & Material Specifications

For different mechanical demands we offer this line of industrial gear couplings in two tooth profiles: standard and oblique.

Component	Specification / Material
Hub	EN9 / C45 Carbon Steel, hardened gear teeth with a crowned profile
Sleeve	High-grade cast iron or carbon steel, internal involute teeth, precision machined
Gear Teeth	Crowned external teeth on the hub, straight internal teeth on the sleeve
Seals	Replaceable synthetic lip seals for effective grease retention
Lubrication	Extreme Pressure (EP2) lithium-based grease, filled to 75% cavity volume
Surface Protection	Cathodic Electro Deposition (CED) coating for industrial corrosion resistance
Balance Grade	Dynamic balance grade G6.3 (ISO 1940) or better for speeds exceeding 3000 RPM

Features & Benefits

Performance Benefits & Features

High Torque Density

Transmits maximum torque in a small footprint.

Crowned Gear Teeth

The gear teeth on the outside of the hub are crowned to provide proper surface contact and minimise edge stress.

Double Engagement Flexibility

The full flex AG gear coupling design has twin hubs for parallel, angular, and axial adjustment.

ST & LT Options

Short tooth or long tooth configurations improve system flexibility or peak load capacity.

Torsional Rigidity

No backlash rigidity assures instant torque delivery without wind-up.

Ease of Maintenance

With split sleeves or standard flange fasteners, inspection and seal replacement is fast and simple.

Compact Design

It requires less axial space than elastomeric seals, making it ideal for tight machinery retrofits.

Pan India Delivery

Our fast delivery networks ensure an urgent transfer from our main production sites to your site.

Comparisons

Product Performance Comparisons

Selecting the proper industrial gear coupling architecture prevents premature drivetrain failure:

AG Series Gear Coupling vs. Pin Bush Coupling

Before choosing your drive, remember that AP Series Pin Bush Couplings use elastomeric elements to damp shocks, and AG Series gear coupling focus on raw torque.

Parameter	AG Series Gear Coupling	Pin Bush Coupling (AP/AB Series)
Torque Capacity	Very High (up to 1,470,000 Nm)	Medium (lower torque range)
Misalignment Type	Angular + Parallel + Axial	Primarily angular + axial
Lubrication Required	Yes – EP2 Lithium Grease	No – utilizes elastomeric bushes
Shock Absorption	Limited (torsionally rigid)	Good (rubber element damping)
Maintenance	Periodic regreasing and seal checks	Replacement of worn bush elements
Best For	Rolling mills, crushers, heavy industry	Pumps, fans, light-to-medium drives
Speed Range	Up to 6,700 RPM (AG-101)	Up to ~3,500 RPM

AG Series Gear Coupling vs. Tyre Coupling

Flexible tyre couplings are perfect for damping severe misalignment and vibration caused by strong parallel misalignment, but they require a larger sealing envelope than an AG gear coupling.

Parameter	AG Series Gear Coupling	Tyre Coupling
Torque Capacity	Very High	Medium–High
Vibration Damping	Low (metal-to-metal rigid)	High (rubber tyre absorbs resonance)
Operating Temperature	Up to 120°C (grease limit)	Up to ~70°C (rubber limit)
Lubrication	Required inside sealed cavity	Not required
Compact Design	Highly compact	Larger outer diameter
Best For	Steel plants, high-speed heavy drives	Pump sets, compressors, motor drives

AG Series Gear Coupling vs. Chain Coupling

Chain arrangements offer a simple setup for low-speed machinery, but an industrial gear coupling provides higher precision and stability at elevated speeds.

Parameter	AG Series Gear Coupling	Chain Coupling
Torque Capacity	Very High	High
Speed Capability	High speed across all frame sizes	Limited by chain dynamics
Lubrication	Sealed grease cavity with lip seals	Oil bath or open grease system
Compact Form	Compact outer dimensions	Larger width due to chain cover
Wear & Noise	Low noise, minimal wear	Higher noise and wear
Best For	High-speed industrial machinery	Low-speed general machinery

Why Choose AniGears?

Why Choose AniGears Gear Coupling Manufacturers?

We are the first gear coupling manufacturer India, using precision engineering and stringent quality assurance systems across our gear coupling India supply chain.

ISO 9001:2015 Certified Manufacturer

Our company takes quality very seriously from the time of purchase of raw steel to the final tooth grinding.

NSBL-Laboratory Testing

Material chemical composition, hardness, and dimension tolerances are checked prior to shipment.

15+ Years of Manufacturing Experience

With our 15+ years of manufacturing experience in power transmission products, we are ideally suited to provide solutions for challenging industrial environments.

Custom Bore

All couplings can be bored and keyed to your drawings.

Pan India Supply

Pan India Supply has designed a simple, reliable supply chain that assures fast and accurate dispatch from our central site in Vadodara, Gujarat.

CED-Coated Components

Advanced cathodic electro deposition assures complete corrosion protection and longer service life.

Selection Procedure

5-Step Selection Procedure

Use these five engineering steps to determine which size of AG series gear coupling is correct for your system.

Determine Absorbed Power

Find the actual kW power absorbed by the machine at rated speed. This is not the motor nameplate kW; derive it for starting and peak loads.

Choose the Service Factor

Multiply the absorbed power by the service factor for your type of application (e.g., 1.25 for conveyors and 1.5 for crushers) to get the design power.

Select the Coupling Size

Using our sizing metrics, find the coupling size at which the power rating at 100 RPM (scaled to your speed) is equal to or greater than the design power. Our standard AG gear coupling table covers AG-101 to AG-119.

Check Bore Range and Misalignment Limits

Check that your frame size will allow your driver and driven shaft diameters to be within the min/max bore limits. Also, check the allowed angular and parallel misalignment limits in the field.

Confirm Lubrication & Speed Capabilities

Check that your system's maximum RPM is not more than the limit of the size selected. Check that your system is running on EP2 grease and that the balance grade G6.3 is selected above 3,000 RPM.

FAQ's

Frequently Asked Questions

AGR series gear coupling is a torsionally rigid, full flex or half flex flexible gear coupling (FGC type) that transmits high torque between two shafts. The AG series gear coupling is a crowned hub with the teeth of the hub inside the straight teeth of the inner teeth of a flanged sleeve that corrects for angular, parallel and axial misalignment.

The AG-101 is a small compact version that has a torque rating of 1,100 Nm, while the AG-119 industrial is large capacity model with a torque rating of 1,470,000 Nm. The gears are made by AniGears, a leading gear coupling manufacturer, and are available in full flex or Half Flex.

ST (Short Teeth) couplings have a different tooth profile, which allows greater angular flexibility, and are ideal for systems that misalign intermittently. LT (Long Teeth) couplings have a larger surface area on which to contact the shaft, thus providing more torque for heavier, uniform drives with slightly less misalignment.

This type of coupling requires EP2 lithium grease filled to at least 75% of the inner sleeve cavity volume. For high-speed applications operating above 3,000 RPM, ensure that the grease specification matches the temperature of your system.

The standard AG gear coupling ranges in diameter from 14mm on the AG-101 to 710 mm on the AG-119. As a top-quality gear coupling supplier, we can bore and key all our models to meet your engineering drawings.

Yes. Due to the mechanical clearance built into the crowned tooth profile, this industrial gear coupling line can handle angular, parallel, and axial misalignment. To determine the minimum permissible values for each frame size, see our product dimension tables.

They are widely used in all heavy industries and are typically used as a high-capacity gear coupling for conveyor in the mining industry or a rigid gear coupling for rolling mills in steel plants. They are also used in cement plants, crushers, power plants, paper mills, chemical plants, and sugar processing facilities.

The maximum speed ranges from 6,700 RPM for the smallest AG-101 to 825 RPM for the largest AG-119. As the size and weight of the coupling increase, so does the maximum allowed speed.

Yes, we are a recognized gear coupling manufacturer India with ISO 9001:2015 certification. Our gear coupling India is thoroughly tested in NABL-certified labs and coated with CED anti-corrosion coating before final packing and shipping.

To select the correct size, find out how much power your machine absorbs, determine the required application service factor, pick a frame size from the dimensions table, make sure your shaft diameters are within the min/max bore, and verify the required speed and lubrication.