Featured Turbine Components & Spare Parts
The Critical Role of Turbine Bearings in Pakistan's Power Sector
Pakistan's industrial sector is undergoing a massive transformation, driven by an increasing demand for stable power generation and infrastructure development. At the heart of this energy revolution are steam, gas, and hydro turbines operating in major power plants across the country. In these high-speed machinery systems, the bearing in turbine in Pakistan represents a critical engineering component. Bearings are responsible for supporting radial and axial loads, ensuring minimal friction, and preventing catastrophic mechanical failures.
From WAPDA’s massive hydroelectric stations like Tarbela and Mangla to thermal giants like the Hubco Power Plant, Kapco, and CPEC-funded coal-fired plants such as Sahiwal and Port Qasim, turbine bearings operate under extreme temperatures and pressures. Given Pakistan's challenging environmental conditions, including high ambient summer temperatures and dust, selecting and maintaining the right Babbitt alloy bearings and lubrication systems is paramount to preventing unplanned outages.
High-quality Babbitt bearings are crucial for Pakistan's thermal and hydro power plants. A single bearing failure can lead to millions of rupees in losses per day due to system downtime and emergency repairs.
Local Application Scenarios & Environmental Challenges
In Pakistan, turbines are deployed under diverse operational conditions. In the northern mountainous regions, hydroelectric turbines face silt erosion, requiring durable water-lubricated bearings and robust filtration systems. Meanwhile, in the southern plains of Sindh and Punjab, thermal power stations rely heavily on steam and gas turbines. These units demand high-grade Babbitt alloy bearings capable of running continuously at 3000 RPM under severe thermal stress.
To maintain the integrity of these bearings, auxiliary systems must work flawlessly. For instance, high-efficiency oil purification systems and EH (Electro-Hydraulic) control systems are essential to keep the lubrication oil free of contaminants. Particulates in oil can scratch the soft Babbitt metal lining, causing localized overheating and bearing wipe. This is where high-quality components like the Oil purifier circulating filter element HC8314FKN39H play a critical role in preserving bearing health.
The Company
Dongfang Yoyik (Deyang) Engineering Co., Ltd. founded in 2004, is located in Deyang, Sichuan, heavy industry base of China. YOYIK is manufacturer and trader of industrial products, integrating design, R & D, production, sales and service. The team has more than 20 professional technicians and experienced sales to provide you with professional, reliable and considerate services.
Our major products and service: steam turbine spare parts, steam turbine generator spare parts, utility boiler spare parts, control system parts, hydraulic components, pneumatic components, filters, filter elements, EH system accessories, bolt heaters, insulating materials, sealant, Babbitt alloy bearing, DC motor / AC motor accessories, motor repair, etc. Our products cover different fields such as thermal power generation, hydropower generation, minerals, chemicals, paper mills, ships, etc., and are sold to more than 30 countries and regions in Europe, Southeast Asia, South America, and Africa.
The rapid development of YOYIK has received strong support from all walks of life. The needs of our users are our reasons for existence. Our philosophy is to always care about user needs and help users solving issues.
Industrial Growth & Trends of Turbine Bearings in Pakistan
As Pakistan moves towards energy diversification under the Indicative Generation Capacity Expansion Plan (IGCEP), there is a strong focus on improving the efficiency of existing thermal power plants and integrating more renewable energy sources. This shift has driven local power generation companies (GENCOs) and Independent Power Producers (IPPs) to adopt predictive maintenance and high-performance components.
One of the major trends in Pakistan's turbine maintenance sector is the transition towards advanced Babbitt alloys and polymer-lined bearings. These materials offer superior load-bearing capacity and lower coefficients of friction, which directly translates to reduced fuel consumption and lower greenhouse gas emissions. Additionally, localized refurbishment of turbine bearings has emerged as a cost-effective alternative to importing new assemblies, making high-precision engineering services highly sought after in industrial hubs like Karachi, Lahore, and Faisalabad.
Ensuring Turbine Reliability with Advanced Auxiliary Equipment
The reliability of a turbine bearing is only as good as the systems that support it. In gas and steam turbines, control valves and protection systems prevent dangerous overspeed conditions that could destroy the bearings. High-reliability components such as the AST solenoid valve GS021600V are critical in emergency trip systems, ensuring the turbine shuts down safely before mechanical limits are breached.
Furthermore, insulation integrity is vital for generators directly coupled to these turbines. Products like the Epoxy Paulownia glass powder mica tape J1108 are essential for maintaining generator winding insulation, preventing electrical faults that could lead to sudden shutdowns and thermal shocks to the shaft bearings.
Why Choose Us
Our Services
As manufacturer
YOYIK has strong strength in technical force and processing capabilities, fully equipped with CNC lathes, machining centers, vertical lathes, CNC boring machines, gantry planers, gantry milling machines, 80mm plate rolling machines, etc. We have provided high-quality equipment selection, construction design, installation and commissioning, after-sales service for the overhaul and technical transformation of hundreds of thermal power plants, hydropower stations, and metallurgical enterprises, and quickly and accurately provided a large number of steam turbines, generators, boilers and other spare parts.
As trader
YOYIK provides a large number of imported NUGENT diatomite filters and other products for many steam turbine generator main engine suppliers and power plants and other industrial users. The company has great advantages in the price and delivery time of many hydraulic products, including pumps, valves, sealing materials, etc. The brands cover EATON, VICKERS, MOOG, STAR, COPALTITE, TEMP-TITE, 707, etc.
As service provider
With more than 17 years of experience in supplying various area of industrial products, YOYIK provides reliable solutions for the multi-factory, multi-channel and multi-brand product needs of large-scale manufacturing, large-scale trading enterprises. We have a special information management system to achieve efficient cooperation with suppliers and logistics. With many years of experience, channels and resources in export business, aiming at improving efficiency and reducing costs, we provide customers with the best choice for purchasing and reduce your worries in the process.
Preventive Maintenance & Bearing Safety in Turbines
In Pakistan's heavy industries, turbine reliability is highly dependent on the continuous supply of clean lubricant at the correct pressure and temperature. The oil film within a hydrodynamic turbine bearing is incredibly thin—often only a few microns thick. Any breakdown in this oil film can lead to metal-to-metal contact, causing rapid wear, severe friction, and catastrophic rotor damage.
To mitigate these risks, advanced filtration and hydraulic control systems are utilized. The EH oil main pump working filter element AP3E301-02D03V-W and EH oil main pump discharge filter DP1A601EA01V-F are critical for protecting the high-pressure fluid control systems that regulate turbine speed and bearing lubrication. Clean hydraulic fluid ensures that control valves react instantly to speed fluctuations, protecting the turbine from over-speed conditions that could destroy the bearing assemblies.
Additionally, structural monitoring is required. Visual indicators and measurement tools, such as the Dual color water level gauge Tempered glass accessories SFD-SW32-(ABC), help plant operators monitor fluid levels and thermal parameters in real-time, ensuring that auxiliary cooling water systems for bearings operate within safe margins.
For large-scale generators, hydrogen cooling is used to dissipate heat from the rotor. Maintaining system pressure is critical, which is why the Generator hydrogen cooling system safety valve 5.7A25 is essential for protecting the generator and its associated bearings from pressure surges.
The History
In 2005
Supply of steam turbine spare parts to Qianbei Power Plant of Guizhou Xidian Electric power Co. Ltd.
In 2006
We signed a supply contract of steam turbine spare parts with Nine Dragon Paper Dongguan branch (Hong Kong-owned).
In 2006
We reached a strategic partnership with 707 Institution.
In 2007
We started the cooperation with ABB of bearings research and development.
In 2007
We undertook China CNR Corporation’s project of the generator retaining rings on CRH traction engines.
In 2009
We cooperated with Beijing Institute of Technology and CSR Zhuzhou Electric Locomotive Co. on researching and testing insulation materials for wind power.
In 2009
Together with Xi'an Jiaotong University, we completed the research and experiment of the 3rd generation nuclear pump water lubricated bearings, and of the new bearing metal material and technology.
In 2010
We completed the localization experiment of bearings for high-speed grinder together with Chongqing Hengbo Machinery Manufacturing Co. Ltd.
In 2010
We studied and developed new insulating materials with Tsinghua University Shenzhen Branch.
In 2011
Siemens employees from the Germany headquarters visited our company for the cooperation of mill sliding bearings.
In 2011
We cooperated with Siemens Control System Department on the project of large hydropower station transformers.
In January, 2013
We started the cooperation with Fruider India on steam turbine spare parts.
In June, 2014
We won the bid of the stator inspection project of 600MW generator units of Guizhou Faer power Plant.
In January, 2015
We provided steam turbine spare parts for Vietnam Electricity IDICO power plant.
In May, 2015
We became an authorized distributor of Shanghai Xinli Machinery Plant under the Ministry of Space Industry of PRC.
In June, 2015
Mr. Ivan from ALSTOM Ltd. visited our company.
In June, 2015
We won the bid of the generator collecting rings and manually wrapping insulation project of Guizhou Xishui power Plant.
