Premier Ltd. also manufactures a large range of S.G. Iron components for Windmills. Some of the areas in which we specialise are:
We also manufacture other heavy parts for windmills where the process involved includes precision machining, Co-ordinate Measuring Machine (CMM) inspection, shot blasting and painting.
The product range includes component for windmill generator of the following capacities
Move your mouse over the Year tabs to be able to see Milestones achieved in the respective years.
“Premier is a one-stop-shop for SG Iron
casting parts required by leading wind turbine
manufacturers. We have the skill and technology
required for high accuracy of machining, drilling
and painting S G Iron Casting,” says Mr. K. G.
Rathi, President, Premier Ltd.
Sole suppliers of SG Iron casting parts in Pune with a capacity to produce upto 25 tons. Catering to high volume, mass solutions and customised solutions.
10-year experience in producing products such as Hubs, Base Frame, Bearing Housings to 3MW wind turbines for the wind energy industry. We have an expertise in producing prototypes using 3D form machining.
Ability to provide turnkey solutions, from consultation to SG Iron part implementation, for domestic and international markets.
Compliance with specifications
and contracts is the most important
factor of Premier’s competitiveness.
Quality check techniques for S G Iron casting products:
3D CNC Coordinate Measuring Machine
Separate measuring instruments/equipment (calliper, micrometer, surface tester)
Use of laser tracker
Customers’ third party inspection at each stage
Certified as per the ISO 9001:2008 standards
Majority of wind turbine parts in the world are made out of the challenging SG Iron material.
Premier recognised the potential and entered this segment. It offers weight reduction and can meet
the mechanical requirements of many windmill parts without heat treatment, thus reducing cost by
40% and production time by 10%.
The Axle Pin (Main Axle), manufactured by Premier is an SG Iron casting part on which bearings are mounted to enable rotary hub functioning.
How and where some of our SG Iron parts are used...
Wind turbines can mainly function using either one of the two mechanisms, i.e. one with a gear box and the other without a gear box, known as a direct drive mechanism, which has been praised for its less complex and low maintainence design. Both these mechanisms employ the use of SG Iron parts produced by Premier, resulting in enhanced efficiency.
The blades are attached to the Rotor Hub,
which with the help of an Axle Pin, acts
like a pivot for the rotor hub to rotate
along with the blades. The turning blades
spin the axle pin 30 to 40 times per minute.
Rotor hubs (wgt: 1.9 ton)
The Axle Pin (Main Axle), manufactured by Premier is
an SG Iron casting part on which bearings are mounted
to enable rotary hub functioning.
Axle pins (wgt: 1.4 ton)
The Main Carrier is a single cast frame made of SG
Iron Casting parts that permits stable mechanical
behaviour and performance. It houses the axle pin,
the gear box, the rotor hub and the blade adapter
and is the most precision load carrying member of
Main carriers (wgt: 1.9 ton)
Some wind turbines also have Blade Adaptors,
which fastened with the Rotary hub, regulate the
wind turbine speed with the aid of a motor. It helps
to quickly adjust the blade as per the direction and
speed of the wind.
Blade adaptors (wgt: 0.75 ton)
The Rotor Hub is then further connected to the Stator
Carrier and the Disc Rotor which are parts fabricated by us.
These parts are fitted together with the help of high capacity
magnets that are inside the frame of the Stator Carrier and
outside the frame of the Disc Rotor respectively. On rotation
of the rotor hub through the Axle Pin, the Stator Carrier
and Disc Rotor also rotate cutting the magnetic field thus
creating electrical energy. The rapidly spinning shaft drives
the generator to produce electric energy. The blades turn a
shaft inside the nacelle which drives the generator.
Hub (wgt: 6 ton)
Bearing Housing is required for gear box type
windmills to hold the Main Shaft in the right
position by supporing them from the front &
rear. The Main Bearing is fitted in to the Bearing
housing. Bearing housings are calculated with the
most modern methods to ensure the best possible
application of force and torque.
Main frame (wgt: 8 ton)