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Established 1937  ·  Jamshedpur, Jharkhand, India
Mohan
Brothers
ExpertiseCommitmentValue

Industrial machining, gear cutting, gearbox overhaul and heavy fabrication — engineered to the exacting demands of India's steel, mining and infrastructure sectors for over eight decades.

Expertise. Commitment. Value. Precision Machining Gear Cutting & Hobbing Heavy Fabrication Gearbox Overhaul Mechanical Maintenance Shaft Turning up to 20 ft 100-Tonne Hydraulic Press Reverse Engineering Expertise. Commitment. Value. Precision Machining Gear Cutting & Hobbing Heavy Fabrication Gearbox Overhaul Mechanical Maintenance Shaft Turning up to 20 ft 100-Tonne Hydraulic Press Reverse Engineering
87+
Years of Operation
10+
Major Industrial Clients
20 ft
Max Lathe Bed Capacity
100 T
Hydraulic Press Capacity
Company Profile

Eight Decades
of Industrial
Heritage

Founded in 1937 in Sakchi, Jamshedpur — the steel city of India — Mohan Brothers has been a cornerstone of the region's heavy industrial ecosystem for over eight decades.

We specialise in mechanical maintenance, precision machining, gear cutting, gearbox services and structural fabrication, serving some of the most demanding plants and facilities in eastern India. Our workshop is equipped with a fleet of heavy-duty lathes (up to 20 feet), boring machines, gear hobbing machines, milling machines, a 100-tonne hydraulic press, and full fabrication tooling — all operated by experienced craftsmen who understand the tolerance and reliability requirements of steel plants, mining operations and heavy manufacturing.

As Jamshedpur's industrial landscape has grown from a single steel mill into a sprawling ecosystem of manufacturing, mining and engineering, Mohan Brothers has grown alongside it — continually investing in capability and building lasting partnerships with clients who rely on us when critical equipment needs to be repaired, modified or manufactured to tight specifications.

Mohan Brothers aims to acquire increasingly complex mechanical fabrication and machining contracts, expand its client base across India's major industrial corridors, and establish itself as one of the leading independent heavy engineering workshops in the country — carrying the legacy of 87 years of honest craftsmanship into India's next industrial era.

Historic photograph of the Mohan Brothers team — Mechanical Engineers, Fabricators & Electro Platers — founded 1937 in Sakchi, Jamshedpur
1937Founded

Our Vision

To be recognised as the premier independent heavy engineering workshop serving India's core industrial sectors — steel, mining, power and infrastructure — known for precision, reliability and the ability to solve the most technically demanding machining and fabrication challenges that large plants face. We envision Mohan Brothers as a nationally known name in heavy industrial engineering, carrying 87 years of honest craftsmanship into India's next industrial era.

Our Mission

To deliver precision machining, gear cutting and heavy fabrication solutions that keep our clients' plants running at peak performance — on time, to specification and at competitive cost. We commit to maintaining a skilled workforce, investing in machine capability and upholding the quality of workmanship that Tata Steel, Hindustan Copper, Usha Martin, Thriveni Earthmovers and our broader client base have depended on for generations. Every job we take carries the full weight of our 87-year reputation.

What We Do

Core
Services

From a single precision shaft to a complete gearbox overhaul, from a worn gear to a fabricated structural frame — we have the machines, the skills and the 87-year track record to deliver. All critical operations are carried out in-house at our Jamshedpur workshop with no subcontracting.

01

Mechanical Maintenance

Complete industrial overhauling, in-house and on-site repair of rotating equipment, pumps, gearboxes, conveyors and heavy plant machinery. We handle emergency breakdowns and scheduled maintenance shutdowns — minimising plant downtime from the moment we get the call.

Gearbox OverhaulBearing Replacement Shaft RepairEmergency BreakdownPreventive Maintenance
02

Precision Machining

Turning, milling, drilling, boring and grinding to tight tolerances on our fleet of heavy-duty machine tools. Shafts and components up to 20 feet in length. We bring full machine-shop capability to every job — with the craftsmanship built over 87 years to match.

Heavy TurningPrecision Boring Surface MillingRadial DrillingShaping & Planing
03

Gear Cutting & Gearbox Services

Spur and helical gear production on our dedicated gear hobbing machine. Comprehensive gearbox strip-down, dimensional inspection, component replacement and precision reassembly. Decades of experience producing and refurbishing gears for steel plant and mining applications.

Spur GearsHelical Gears Gear HobbingGearbox RebuildBronze Bushing
Heavy fabrication at Mohan Brothers Jamshedpur
04

Heavy Fabrication

Custom steel structures, frames, equipment housings and assemblies fabricated to drawing or reverse-engineered from worn originals. We handle large weldments and structural components requiring both machining and fabrication — a combination delivered entirely under one roof.

Structural FramesEquipment Housings WeldmentsReverse EngineeringCustom Assemblies
CAPABILITIES
Technical Depth

Full-Spectrum
Engineering

A Tata Steel or L&T engineering team needs more than a vendor — they need a workshop partner with the technical breadth to handle whatever the plant throws at them. At Mohan Brothers, decades of hands-on experience across every discipline of mechanical engineering means we understand the engineering context behind every job, not just the machining requirements.

Complex, multi-operation components are handled entirely in-house — from rough casting to final inspection — so clients never have to coordinate across multiple vendors or accept subcontracted quality on critical parts.

Shaft Turning & Grinding

Precision turning of shafts up to 20 feet on our heavy-duty lathe fleet. Stepped shafts, flanged shafts, journal restoration and keyway cutting all performed in-house to close tolerances.

Horizontal Boring

100mm horizontal boring machine for precision bore-sizing of heavy castings, gearbox housings and bearing housings requiring close-tolerance cylindrical bores that cannot be achieved on a lathe.

Gear Hobbing & Profiling

Production of spur and helical gears using our dedicated gear hobbing machine. Replacement gears produced to original specifications from drawings or from worn originals used as pattern.

Surface Planing & Milling

8-foot planer machine and two milling machines for surface finishing, slot cutting, step machining and flat-surface generation on large plate components and structural parts.

Heavy Press Work

100-tonne hydraulic press for bearing fitting and removal, bush pressing, interference-fit assembly, straightening of shafts and structural members, and press-forming operations.

Slotting & Shaping

Dedicated slotter and shaper machines for internal keyway cutting, slot generation, spline profiles and intricate internal contour work not achievable on a lathe or milling machine alone.

Reverse Engineering

When OEM spares are unavailable or lead times are unacceptable, we reverse-engineer worn or damaged components from physical measurement — producing functional replacements that meet or exceed original specifications.

Structural Fabrication

Custom steel structures, machine bases, conveyor frames, equipment guards and support structures fabricated to client drawings or developed collaboratively with your engineering team.

Gearbox Overhaul & Assembly

Complete strip-down, dimensional inspection, component replacement — gears, bearings, seals, bushings — and precision reassembly to OEM clearances. Trial-run testing before return to plant.

Planer Machine
Surface Finishing
Machining · Steel Plate
Flywheel Bronze
Bushing Boring
Boring · Bronze Bushing
Heavy Lathe
Component Turning
Turning · Large Bore
Machine Inventory

Our
Industrial
Equipment

A well-equipped machine shop is the foundation of reliable delivery. Our inventory spans heavy turning, boring, gear cutting, pressing and milling — giving us the breadth to handle complex multi-operation jobs entirely in-house. All machines are maintained and operational.

#MachineSpecificationQtyPrimary Application
01Lathe Machine — 6 ft bed6-foot bed length×1Precision turning of medium shafts & components
02Lathe Machine — 8 ft bed8-foot bed length×1Medium-heavy shaft turning
03Lathe Machine — 10 ft bed10-foot bed length×1Heavy shaft and roll turning
04Lathe Machine — 12 ft bed12-foot bed length×1Long shaft turning, tapered shafts
05Lathe Machine — 20 ft bed20-foot bed length×1Extra-long rolls, conveyor shafts, industrial drums
06Shaper MachineStandard×1Flat surface shaping, keyways, slots
07Slotter MachineStandard×1Internal keyways, splines, contour slots
08Milling MachineVertical / horizontal×2Face milling, slot milling, step machining
09Gear Hobbing MachineStandard×1Spur & helical gear production
10Planer Machine — 8 ft table8-foot table×1Large flat-surface finishing, structural components
11Horizontal Boring Machine100mm boring bar×1Precision bore finishing on heavy castings & housings
12Pillar Drill Machine40mm capacity×2Drilling, reaming, tapping
13Radial Drill Machine70mm capacity×1Large-hole drilling on heavy components
14Hydraulic Press100-tonne capacity×1Bearing fitting/removal, bush pressing, straightening
20-foot lathe — large shaft turning
20 ft Lathe · Shaft Turning
Large sprocket gear for earthmoving equipment
Gear Cutting · Sprocket
Horizontal boring machine on heavy casing
Horizontal Boring · Casing
Precision flange and bronze bushing machining
Precision Flange Machining
Fabricated industrial spoked wheel
Fabrication · Spoked Wheel
Large industrial drum on boring machine
Boring · Industrial Drum
Live from the Shop Floor

Our Work
in Action

Actual footage from our Jamshedpur workshop — no renders, no stock footage. This is the precision and capability behind every enquiry.

Gear Hobbing · Helical Teeth

Hobbing machine cutting precision gear teeth with coolant flow

Gear Cutting · Spur Gear

Close-up of gear tooth formation — tolerance-critical hobbing operation

Drum Surface Finish Turning

Fine finishing pass — golden swarf confirms correct feed and speed parameters

Conical Component Roughing

Heavy roughing pass — sparks indicate aggressive stock removal at speed

Our Client Roster

Trusted by
India's Industrial
Leaders

From our earliest days we have had the honour of serving some of India's most demanding industrial organisations. These relationships — many spanning multiple decades — are built on consistent delivery, technical competence and a genuine understanding of what plant engineers need from a workshop partner.

Tata Steel Ltd.
Integrated Steel Plant

One of the world's most sophisticated integrated steel plants, headquartered in Jamshedpur. Precision machining and fabrication support for plant maintenance operations across the facility.

Hindustan Copper Ltd.
Mining & Metals

India's only primary copper producer. Heavy machining and mechanical maintenance support for mining and smelting operations where equipment reliability is mission-critical.

Tata BlueScope Steel
Steel Processing

Manufacturer of COLORBOND® and ZINCALUME® steel. Machining and fabrication services supporting their Jamshedpur processing facility's maintenance requirements.

Usha Martin Ltd.
Wire Rope & Steel

A global leader in speciality wire ropes and steel, with manufacturing in Jamshedpur. Gear cutting, precision machining and gearbox overhaul services for their production equipment.

Thriveni Earthmovers
Mining & Earth Moving

One of India's leading mining service companies. Precision machining of sprockets, shafts and drive components for their heavy earthmoving equipment fleet.

And Many More
Across Sectors

Our portfolio spans steel, copper, mining, wire rope, construction and infrastructure — reflecting broad capability across all sub-disciplines of heavy mechanical engineering. Enquiries welcome from all sectors.

For over eight decades, we have built this business on one principle: a client who trusts us with a critical component trusts us with their production. That responsibility shapes everything we do — from how we machine a shaft to how quickly we respond to a call.
Get in Touch

Start a
Conversation

Whether you have an urgent breakdown, an upcoming shutdown requirement, or a long-term fabrication project — we want to hear from you. Send us the details and our team will respond promptly.

Workshop Address2 Bandi Road, Sakchi, Jamshedpur – 831001, Jharkhand
Working HoursMonday – Saturday  ·  8:00 AM – 6:00 PM

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