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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
100-tonne hydraulic press for bearing fitting and removal, bush pressing, interference-fit assembly, straightening of shafts and structural members, and press-forming operations.
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.
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.
Custom steel structures, machine bases, conveyor frames, equipment guards and support structures fabricated to client drawings or developed collaboratively with your engineering team.
Complete strip-down, dimensional inspection, component replacement — gears, bearings, seals, bushings — and precision reassembly to OEM clearances. Trial-run testing before return to plant.
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.
| # | Machine | Specification | Qty | Primary Application |
|---|---|---|---|---|
| 01 | Lathe Machine — 6 ft bed | 6-foot bed length | ×1 | Precision turning of medium shafts & components |
| 02 | Lathe Machine — 8 ft bed | 8-foot bed length | ×1 | Medium-heavy shaft turning |
| 03 | Lathe Machine — 10 ft bed | 10-foot bed length | ×1 | Heavy shaft and roll turning |
| 04 | Lathe Machine — 12 ft bed | 12-foot bed length | ×1 | Long shaft turning, tapered shafts |
| 05 | Lathe Machine — 20 ft bed | 20-foot bed length | ×1 | Extra-long rolls, conveyor shafts, industrial drums |
| 06 | Shaper Machine | Standard | ×1 | Flat surface shaping, keyways, slots |
| 07 | Slotter Machine | Standard | ×1 | Internal keyways, splines, contour slots |
| 08 | Milling Machine | Vertical / horizontal | ×2 | Face milling, slot milling, step machining |
| 09 | Gear Hobbing Machine | Standard | ×1 | Spur & helical gear production |
| 10 | Planer Machine — 8 ft table | 8-foot table | ×1 | Large flat-surface finishing, structural components |
| 11 | Horizontal Boring Machine | 100mm boring bar | ×1 | Precision bore finishing on heavy castings & housings |
| 12 | Pillar Drill Machine | 40mm capacity | ×2 | Drilling, reaming, tapping |
| 13 | Radial Drill Machine | 70mm capacity | ×1 | Large-hole drilling on heavy components |
| 14 | Hydraulic Press | 100-tonne capacity | ×1 | Bearing fitting/removal, bush pressing, straightening |






Actual footage from our Jamshedpur workshop — no renders, no stock footage. This is the precision and capability behind every enquiry.
Large diameter industrial shaft precision-turned on our flagship 20 ft lathe
Hobbing machine cutting precision gear teeth with coolant flow
Close-up of gear tooth formation — tolerance-critical hobbing operation
Fine finishing pass — golden swarf confirms correct feed and speed parameters
Heavy roughing pass — sparks indicate aggressive stock removal at speed
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.
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.
India's only primary copper producer. Heavy machining and mechanical maintenance support for mining and smelting operations where equipment reliability is mission-critical.
Manufacturer of COLORBOND® and ZINCALUME® steel. Machining and fabrication services supporting their Jamshedpur processing facility's maintenance requirements.
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.
One of India's leading mining service companies. Precision machining of sprockets, shafts and drive components for their heavy earthmoving equipment fleet.
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.
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.