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Bearing Maintenance & Refurbishment in Indonesia
Indonesia's rapid industrialization across sectors such as power generation, mining, cement production, palm oil milling, and pulp & paper manufacturing has generated an unprecedented demand for high-reliability rotating machinery. At the heart of these critical assets—including steam turbines, heavy-duty gearboxes, crushing mills, and large circulating pumps—are specialized industrial bearings. Given the tropical climate, high humidity, and demanding operating environments of Indonesian factories, bearings are highly susceptible to premature wear, fatigue, and lubrication breakdown.
For bearing manufacturers and repair factories operating in industrial hubs like Cikarang, Karawang, Surabaya, and Medan, mastering advanced bearing repair methods is vital. Rather than opting for costly, time-consuming complete replacements that disrupt supply chains, local enterprises rely on precision refurbishment. Refurbishing large-scale hydrodynamic Babbitt bearings and rolling-element bearings not only slashes downtime but also reduces capital expenditure, aligning with sustainable industrial practices.
Key Stressors on Industrial Bearings in Indonesia:
- Extreme Humidity & Marine Salinity: Accelerates oxidation and rust formation on bearing steel, leading to pitting and flaking.
- Abrasive Particulate Contamination: Common in Kalimantan coal mines and Sumatra pulp mills, where fine dust penetrates bearing seals.
- High Thermal Load: Tropical ambient temperatures combined with continuous high-load operations demand superior heat dissipation and robust lubrication systems.
- Frequent Start-Stop Cycles: Causes boundary lubrication conditions, causing direct metal-to-metal contact in hydrodynamic bearings.
Advanced Repair Methods Practiced by Factories
1. Babbitt Alloy Re-casting and Re-babbitting
Hydrodynamic journal and thrust bearings used in steam turbines and generators rely on a layer of Babbitt metal (tin- or lead-based alloy) to support the rotating shaft. Over time, fatigue, electrical erosion, or lubrication starvation can damage this layer. The re-babbitting process involves:
Step A: Degreasing & Melt-out. The worn bearing shell is heated in a controlled environment to melt away the old Babbitt alloy without altering the structural integrity of the steel or bronze backing shell.
Step B: Surface Preparation & Tinning. The inner surface is grit-blasted and acid-cleaned. A thin layer of pure tin is applied to ensure a metallurgical bond between the backing material and the new Babbitt metal.
Step C: Centrifugal or Static Casting. Centrifugal casting is preferred for cylindrical bearings as it utilizes centrifugal force to eliminate porosity and impurities, resulting in a dense, uniform Babbitt layer. Static casting is utilized for complex thrust pads and segmented bearings.
Step D: Precision Machining & NDT. The cast bearing is machined on CNC vertical lathes to exact design clearances. Non-Destructive Testing (NDT), particularly ultrasonic testing (UT) and dye penetrant inspection (PT), is performed to verify 100% bonding integrity.
2. Laser Cladding & Thermal Spraying
For rolling-element bearing housings and shaft journals that have suffered dimensional wear, laser cladding and thermal spraying are state-of-the-art solutions. These techniques deposit high-strength alloys onto the worn zones:
Laser Cladding: Uses a high-intensity laser beam to melt a metal powder alloy onto the substrate. This process features a minimal heat-affected zone (HAZ), preventing thermal distortion of the shaft or housing, and provides an exceptionally strong metallurgical bond.
High-Velocity Oxygen Fuel (HVOF) Spraying: Projects semi-molten particles at supersonic speeds onto the bearing seat, forming a dense, wear-resistant coating. This is highly effective for restoring press-fit tolerances on large bearing journals.
3. Raceway Grinding and Superfinishing
When rolling-element raceways exhibit micro-pitting or shallow spalling, specialized grinding machines are used to remove the damaged layer. The raceway is ground to a slightly larger (for outer rings) or smaller (for inner rings) dimension, followed by superfinishing to restore the original surface roughness (Ra
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.
Why Choose Us
- Rich experience: Spare parts expert in power industry since 2004.
- Powerful enterprise: One-step service for industrial traders and users.
- Wide range of products: Over 3000 types of spare parts at your choice.
- Professional service: Experienced and skilled engineers, intellectual property patents.
- Advanced equipment: High-tech production equipment and professional testing devices.
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.
Localized Application Scenarios in Indonesian Industries
Steam Turbine Bearings in PLN Power Plants
State-owned utility PT PLN (Persero) and Independent Power Producers (IPPs) operate massive steam and geothermal power plants across Java, Sumatra, and Sulawesi. In these facilities, high-speed steam turbine rotors are supported by hydrodynamic journal bearings. Any minor wear or vibration can trigger an emergency shutdown, costing millions of dollars daily. Localized repair factories in Indonesia utilize high-tin Babbitt re-casting and precision balancing to restore turbine bearings to OEM specifications, ensuring grid stability.
Agro-IndustryPalm Oil Mills (PKS) & Pulp Mills
Indonesia is the world's largest producer of crude palm oil (CPO). Palm oil mills (Pabrik Kelapa Sawit) utilize heavy-duty screw presses, digesters, and steam turbines. The bearing environments in these mills are characterized by high acidity, steam exposure, and heavy load pressures. Bearing repair shops in Sumatra (Riau, Medan) and Kalimantan focus on sealing upgrades and journal rebuilding using thermal spray coatings to extend the service life of bearings under corrosive conditions.
Heavy Machinery in Mining & Cement Plants
From the massive copper-gold mines in Grasberg, Papua, to the coal mines of East Kalimantan, and cement production facilities like Semen Indonesia in Tuban, heavy equipment operates around the clock. Ball mills, sag mills, and rotary kilns rely on large-diameter split-journal bearings. Repair factories in these regions utilize portable, on-site machining tools to perform in-situ bearing journal grinding, minimizing the need to transport massive components across islands.
Future TrendsIndustry 4.0 & Predictive Maintenance Trends
The Indonesian bearing repair sector is transitioning toward predictive maintenance (PdM). By integrating vibration sensors, acoustic emission testing, and online oil analysis, factories can detect bearing defects before catastrophic failures occur. This data-driven approach allows maintenance teams to schedule planned refurbishments, maximizing machinery uptime and matching the technological shift seen globally.
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