GMT history - 1980-1990

GMT was focusing on PS model Power Chucks and 300, 400, 600 and 900 mm Lapping Machines. In the 80s and 90s GMT again built SPM and Special Power Chucks and Hydraulic Cylinders for Escorts Patiala. 1500 mm Lapping Machine was manufactured for BHEL Bhopal for lapping White Metal Bearing Pad used in Water Turbine. GMT received order from BHEL although M/S Lawrence UK was a strong contender for the order for Lapping Machine. They supplied a machine to Mitchell Bearings one of the leading manufacturer of white metal bearing in UK. Engineers in BHEL had faith in Lapping Technology of GMT and the order came to us for the machine.

High Speed Hollow chucks, Hollow High Speed Cylinders were also developed during 80s. Belt Grinders i.e.  Single, Double Ended and Platen Grinders were also developed in the 80s. Platen Grinders were developed for MICO, Bangalore with dust extraction system. 

History of GMT -1960-70

Years 60 to 70 GMT were busy in manufacture of Cast Iron Surface Plates. In 1963 we signed agreement with Berg for the manufacture of Manual Chucks. As the development of Manual Chucks were in process Surface Plates orders were coming in from Voltas. Then we received a big order (about 152 plates) for size 1500 x 1200 from HAL Nashik through Voltas. As we needed more space to produce Surface Plates we shifted to Pallikkaranai. Foundry operations were in Guindy. After executing the order for HAL Plates order in flow dropped drastically from Voltas.

Development of Power Chucks and Lapping Machines were taken up. We had become very skilled in the scraping process This was a strong base to commence SPM building activity which we took up  when  complete drawings were given by the buyers. Lucas TVS particularly gave us a breakthrough in the manufacture of Coil Winding Machine, Riveting Machine and Conductor Cropping Machine for automobile coils. SPM's for Sundaram Abex for brake shoe machining, Sundaram Fasteners, Wheels India (Flash Cutting Machine) and Grindwell Norton (Grindwell Norton was on an island called Mora reached by boat. From Gateway of India) were made in early 70s.

 SPM manufactured for TVS

This decade saw a lot of SPM’s manufactured by GMT.

About Guindy Machine Tools

P. Venkat Raman, a pioneering entrepreneur founded GMT in 1959 for manufacture of engineering products of high quality. He provided solutions to various import substitution problems. His collaborative work with top level professors at IIT, Madras, resulted in the first Indian Standards for surface plate calibration. 

Fifty years down the road, GMT continues to maintain its focus on quality engineering excellence with good values and a clear business ethos. The company has earned the trust of its customers and a premier place in the market. GMT enjoys an enviable reputation for the many milestone achievements in product development. Emphasis on quality, indigenous development, providing cost effective solutions, experience and prompt customer service has been key to our success.

GMT provides solutions for all workholding problems, be it cylindrical or non-cylindrical . GMT has a wide range of manual chucks, CNC Lathe chucks, power chucks and special chucks to suit your specific requirement. GMT's experience in the production of metrology equipment over three decades has resulted in the manufacture of world class coordinate measuring machines. GMT also manufactures machine tools like lapping machines, belt grinders, hydraulic cylindrical grinders and surface grinders. GMT believes in building lasting relationships with its customers through its Customer Education Programmes and by constantly monitoring customer needs and providing solutions to their requirements.Today the company is the only Indian supplier of high quality cam-operated manual chucks for lathes 

Our product range includes: GMT Special Chucks & Workholding: GMT make Power Operated Eccentric Compensating Chuck, Power Operated Eccentric Compensating Chuck with retractable jaws, Power Operated Hollow High Speed Quick Change Jaw Chuck, Power Operated Hollow High Speed Quick Change Jaw Chuck, GMT Universal Ball Lock Chucks, GMT make Power Operated Hand Indexing Chuck, Power Operated Power Indexing Chucks, Twist Finger Chuck, Diaphragm Chucks, Collect Chuck, Crank Shaft Machining Chuck, Grip down Chuck, Friction Welding Chucks, Knuckle Fixture Chuck, Expanding Mandrel and other custom made chucks. 

Coordinate Measuring Machine : The GMT CMM is the culmination of decades of experience in metrology and machine tools. Our range of CMM's consists of 14 models to suit every inspection need. We also undertake CMM Retrofit, CMM Calibration, CMM Software Upgrade and CMM Contract / Parts Inspection. 

GMT Work Positioning: Indexing Tables: Hydraulic Rotary Indexing Tables, Pneumatic Rotary Indexing Tables, Numerically Controlled Rotary Table.

Machine Tools : Lapping Machine, Planetary Lapping Machine, Belt Grinding Machine, Hydraulic Cylindrical Grinder, Hydraulic Cylindrical Surface Grinding Machine, Tool Turret.

GMT Metrology Division - Cast Iron and Granite Products: GMT Make CI Surface Plate, Angle Plate, Box Angle Plates, Straight Edge, Bench Centre. Granite Surface Plate, Granite Straight Edges, Granite Master Squares, Master Cylinders.

Heavy duty single side lapping machine from GMT

	Models 300mm and 400mm dia :
GMT 300mm and 400mm dia lapping machines are bench models and are robust. The lap plate and conditioning rings are made from special, close-grained, cast iron. The lap plate is supported on a preloaded taper roller bearing for maximum stability.

Standard Equipment :
	Heavy duty steel fabricated housing.
	Abrasive distribution system with pump, tank and infinitely variable flow control.
	Cast alloy lap plate, radially serrated.
	Three adjustable conditioning rings with yoke and bearing assemblies.
	Automatic lapping cycle timer.
	Drive unit, 0.37 kw motor with gear box.
	Reverse mechanism.
	Three pressure plates with lifting eye bolts.
	Three felt pads.
Optional Equipment :
	Variable speed drive.
	Special lap plate for lapping tungsten carbide, ceramics, etc.
	A handy machine cabinet which permits storage for all accessories.

Advantages of lapping

What is lapping? Lapping is the first mechanical precision finishing  operation in done to achieve high dimensional accuracy. It helps you achieve positive sealing by obtaining high degree of flatness and surface finish. The advantages of lapping for obtaining fine flatness and surface finish have long been recognised by production and design engineers. Advantages: A wide variety of materials can be lapped. Flatness to one light band (0.0003 mm) on 100 dia. Surface finish to less than 0.2 µRA.
	Some reasons why lapping machines help to transform a costly, rarely used, hand operation to a fine accuracy, economical process:-
Parts of different shapes, thickness and material can be lapped.GMT has supplied lapping machines to lap various metals, plastics, glass, ceramic and granite. Because the lap plate continuously maintains its flatness, production is not interrupted. Appropriately selected diameters of the conditioning rings result in optimum lapping area. Lapping cycles are controlled by an automatic and adjustable digital display times.