Our Journey: Building a Legacy
1980
Madurai Diesel Sales
Our story begins in 1980, when Madurai Diesel Sales & Service was established as an authorised dealer for Cummins India Ltd, serving the districts of Madurai, Dindigul, and Theni. Built on a foundation of technical expertise and an uncompromising commitment to after-sales service, Madurai Diesel quickly earned a reputation as the most dependable power solutions partner in the region. As that trust grew, so did our footprint, and between 1995 and 2005, Cummins India Ltd entrusted us with dealerships across Trichy, Ariyalur, Pudukottai, Karur, and Perambalur.
1995 - 2008
The KJ Diesels Era
In 2009, Madurai Diesel joined hands with K.J. Diesels — another Cummins authorised dealer operating across Salem, Namakkal, Krishnagiri, and Dharmapuri — to form JN Machineries Private Ltd, headquartered in Madurai. The merger created a stronger, unified platform to serve a wider region with the same standards that had defined Madurai Diesel from the start.
2009 - 2019
Multi-State Expansion
The years that followed brought rapid and purposeful growth. Through 2009 to 2019, we extended our Cummins service network across Tamil Nadu. During this period we also added two new business divisions: ACE Material Handling in 2015 and Hyundai Construction Equipment in 2017, broadening our offering beyond power generation. In 2020 we expanded into Chennai, Pondicherry, and Vellore, and in 2024 added Coimbatore, Hosur, Erode, Tirupur, and Ooty — bringing our presence to over 30 districts across Tamil Nadu and Pondicherry.
2020- Now
Strategic Expansion
Today, JN Machineries operates across three focused divisions — Cummins Power Solutions, ACE Material Handling, and Hyundai Construction Equipment — offering customers a single, trusted partner for their power, material handling, and construction needs. Four decades on, our founding belief remains unchanged: reliable service and lasting partnerships are not just values we speak of - they are the foundation on which we, and our customers, are built.
Our Purpose & Promise
Vision
To make JNM the market leader in providing dependable and best in class Products and After market support for the entire range of offerings.
Mission
Our mission is to earn ‘Customers for Life’ by ensuring that they are delighted with pleasant experiences exceeding their expectations while doing business with us across the entire gamut of Sales & Service of the products offered. We yearn to explore the power of standardisation as well as customisation rendered in the right measure through empathetic actions and supporting business processes.
Values
- Dependability and Integrity
- Caring and Committed
- Empathy
- Agility
- Team Work
- Continuous Learning
Leadership
M. Janardanan
Director
Diploma in Mechanical Engineering (1958 Batch) with over 50+ years of experience in maintenance and power systems.
Started his career at Bolani Iron Ore Ltd., followed by roles at Cochin Refineries and Cummins Sales & Service (India) Ltd., working across multiple locations in India.
From 1980 to 2009, he led Cummins Dealership operations, gaining deep expertise in DG sets and heavy equipment.
K. Nagarajan
Executive Director
Diploma in Mechanical Engineering (1970 Batch) with vast experience in service and dealership management.
Worked with Enfield India and L&T Chennai, and later joined Cummins Sales & Service (India) Ltd. (1977) as a Service Engineer, rising to the position of District Manager.
Gained extensive experience across multiple locations including Bangalore, Pune, Coimbatore, Trichy, Madurai, Ranchi, Delhi, Kolkata, and Singrauli.
In 1995, he was instrumental in securing the Cummins dealership in Salem, leading to the formation of KJ Diesels, which has grown consistently under his leadership.
K. Mayuranathan
Director
B.A. Economics (1979 Batch) with extensive experience in dealership operations and customer relations.
Started his career with a Cummins dealer in Vijayawada (1980) and later joined the Cummins dealership in Salem (1981), where he grew from Parts Merchandiser to leading the entire dealership.
A former Lions Club Zone Chairperson, he has strong customer networks across Salem, Dharmapuri, Namakkal, and Krishnagiri, along with excellent rapport with Cummins officials.
In 1995, he co-founded KJ Diesels with Mr. K. Nagarajan, contributing to the company’s steady growth.
A. Sudhir
Managing Director
B.E. in Electronics & Instrumentation (1991 Batch) with strong experience in operations and dealership management.
Completed Cummins In-Plant Training (1992) and has since been leading the operations of Madurai Diesel Sales & Service.
Also manages the authorized dealership of Atlas Copco compressors under Sri Meenakshi Pneumatics.
Actively involved in social initiatives, including Rotary Club of Madurai Metro heritage and other community organizations.
Ethics & Compliance
Policy
This Code of Ethics serves as a guide to uphold integrity and professionalism. Every employee represents our brand and must adhere to the highest standards of ethical conduct.
Foster Trust and Belief
Our success depends on the trust of employees, customers, and stakeholders. We build this by keeping promises, acting honestly, and achieving goals through ethical means.
Foster Respect in the Workplace
We promote a respectful, inclusive, and discrimination-free environment. Any form of harassment or misconduct is not tolerated and must be reported promptly.
Foster Constructive Dialogue
Open communication builds respect. Employees are encouraged to voice concerns or suggestions freely, and supervisors must ensure an environment of transparency and trust.
Lead by Example
All employees should lead with integrity, professionalism, and accountability—serving as role models who contribute to a positive and fair workplace.
Compliance with all Applicable Policies and Laws
Adherence to all company policies and applicable laws is mandatory. When uncertain, employees should seek guidance before taking action.
Safeguarding Inside Information
Confidential company and client information must never be disclosed without authorization. Protecting sensitive data is critical to maintaining our credibility.
Avoid Conflicts of Interest
Employees must avoid activities or relationships that compromise their objectivity or the company’s interests. Always consult a supervisor if in doubt.
Corporate Record keeping
All records must be accurate, maintained as per policy, and compliant with legal and regulatory standards.
Accountability
Employees must understand and follow this Code. Violations may lead to disciplinary action, including termination. Questions or concerns should be directed to Human Resources.
Use of Company Assets
Company property and resources are for professional use only. Misuse or personal exploitation of company assets is prohibited.
Transparency
We value honesty and openness in all communications. Transparent practices strengthen relationships with clients, partners, and colleagues.
Compliance
All employees must adhere to these policies. In case of any uncertainty, seek clarification from the HR Department.
Sustainability
- At JNM, sustainability is the way we manage and operate our business to best serve our customers, care for the environment, secure profits and drive long-term prosperity
- Sustainability is a business method that ensures safety, efficiency, and responsibility in a manner that protects JNM employees, communities, shareholders, and the environment, now and in the future
- Our daily operations align business performance with a commitment to environmental, social, and community stewardship encompassing four elements:
Reduce the environmental footprint of our operations:
Support sustainable development:
Culture
- At JNM, we profess and practice a Customer-Centric Culture assisted by nimble processes to enable ease of doing business to all our customers. Employee Safety is paramount to us while promoting an innovative entrepreneurial mindset, a continuous learning environment, and opportunities for personal development
- We nurture a High performance, Innovative Culture where everyone’s ideas are encouraged and collaboratively debated to facilitate the emergence of the best ones
- Customer Service Excellence is the cornerstone of our philosophy to support customers with varied needs and expectations
- Result-oriented actions through Team Work are fostered with clear individual and team accountabilities
- We endeavor to design and implement business processes that are amenable to empowering the team for superior performance