Flange slewing bearings are robust components, but they can experience problems over time. Here are some common issues and their solutions.

Flange Slewing Bearing Common Problems and Solutions

1. Irregular Rotation or Jamming:

Problem: The bearing rotates unevenly or gets stuck, even without a load. This could be due to the ring becoming out of round during transport or storage.

Solution: This issue should ideally be caught during the fitting process. If it occurs after installation, the bearing might have been deformed. In such cases, the bearing may need to be replaced. Ensure proper handling and storage to prevent this.

2. Abnormal Noise During Operation:

Problem: Unusual sounds like squealing or grinding can indicate issues. Squealing often suggests insufficient lubrication, while grinding noises might mean internal wear or contamination.

Solution:

Squealing: Apply the correct type and amount of lubricant. Refer to the manufacturer’s recommendations for lubrication intervals and grease type (EP2 grease is often recommended).

Grinding: Stop operation immediately and inspect the bearing for wear, damage, or foreign material. Clean and relubricate or replace the bearing if necessary.

3. Lubricant Leakage:

Problem: Grease leaking from the seals.

Solution:

Over-lubrication: Ensure you are not lubricating too frequently. A typical cycle is 150-250 hours, but adjust based on the operating intensity.

Thinned grease: Check if hydraulic or gear oil from the slewing motor has contaminated the bearing grease, making it thin. Repair any leaks in the motor seals.

Incorrect grease: Using the wrong type of grease can cause it to thin, especially with temperature increases. Use the manufacturer-recommended grease.

Damaged seals: Carefully inspect the seals for damage or displacement and replace them if necessary.

4. Excessive Wear and Increased Clearance:

Problem: Over time, the rolling elements and raceways wear, leading to increased play or tilting.

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For more detailed information on common problems and solutions of flange slewing bearings, please click here: https://www.mcslewingbearings.com/a/news/flange-slewing-bearing-common-problems-and-solutions.html

Lubricating a slewing bearing is critical for ensuring smooth operation, reducing wear, and extending its service life. Here’s a step-by-step guide on how to properly lubricate a slewing bearing.

There are generally two main areas that require lubrication:

The Raceway: This is where the rolling elements (balls or rollers) run between the inner and outer rings.

The Gear Teeth: If the slewing bearing has integrated internal or external gear teeth.

Key Principles:

Right Lubricant: Using the correct type and grade of grease is paramount.

Right Amount: Too little or too much can cause problems.

Right Frequency: Lubrication intervals depend heavily on operating conditions.

Right Method: Applying the grease correctly ensures it reaches the critical areas.

Cleanliness: Contamination is a major enemy of bearings.

Slewing bearing lubrication

I. Preparation & Safety:

Consult the Manufacturer’s Manual: THIS IS THE MOST IMPORTANT STEP. The equipment or bearing manufacturer’s manual will specify the exact type of grease, the recommended lubrication frequency, and potentially specific procedures or grease fitting locations. Always prioritize their recommendations.

Safety First:

Ensure the machine is shut down, de-energized, and properly locked out/tagged out (LOTO) according to your site’s procedures before performing any maintenance.

Wear appropriate Personal Protective Equipment (PPE), including safety glasses and gloves.

Gather Supplies:

Correct type and grade of grease (as specified by the manufacturer, typically an EP lithium complex grease, often NLGI Grade 2).

Grease gun (manual or powered). Ensure it’s clean and loaded with the correct grease. Avoid mixing different grease types.

Clean rags or cloths.

Solvent (if needed for cleaning gear teeth, ensure compatibility).

Stiff brush (for cleaning gear teeth, if applicable).

Small tool or pick (for cleaning grease fittings).

II. Lubricating the Raceway:

Locate Grease Fittings: Find the grease fittings (zerks) located around the circumference of one of the bearing rings (usually the stationary one). There may be one, two, or several fittings spaced evenly.

Clean Fittings: Thoroughly clean the grease fittings and the area around them with a clean rag. Use a pick to remove any hardened grease or dirt from the fitting opening. This prevents contaminants from being injected into the bearing.

Attach Grease Gun: Securely attach the grease gun coupler to the fitting.

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For more detailed information on slewing bearing lubrication, please click here:https://www.mcslewingbearings.com/a/news/slewing-bearing-lubrication.html

Alright, let’s get into the nitty-gritty of installing a glass tempering furnace. This is a complex piece of machinery, so a professional approach with meticulous attention to detail is crucial for safety and optimal performance.

Glass Tempering Furnace Installation

Phase 1: Pre-Installation and Site Preparation

Detailed Site Assessment:

A thorough inspection of the intended installation area is the first step. This involves verifying floor load capacity to support the furnace’s weight (which can be substantial).

Measurements of the space are taken to ensure adequate clearance around the furnace for operation, maintenance, and potential future removal or servicing.

Access routes for bringing in the large furnace components are carefully evaluated. This might involve planning for temporary removal of doors or even wall sections.

Utility Infrastructure Check and Preparation:

Electrical Power: The furnace’s power requirements (voltage, phase, current) are strictly adhered to. Dedicated electrical lines with appropriate circuit breakers and safety disconnects are installed by qualified electricians.

Gas Supply (if applicable): If the furnace uses gas for heating, the gas line capacity, pressure requirements, and safety shut-off valves are meticulously checked and installed according to local codes.

Compressed Air: Many tempering furnaces rely on compressed air for various functions, such as cooling and operating pneumatic cylinders. The existing compressed air system’s capacity and pressure are verified, or a dedicated compressor with appropriate piping is installed.

Water Supply (if applicable): Some advanced cooling systems might require a water supply. The water pressure, flow rate, and drainage system are assessed and prepared.

Ventilation System: Proper ventilation is critical to remove heat and any potential byproducts. The design and installation of the ventilation system must comply with environmental regulations and safety standards.

Foundation Preparation:

Depending on the furnace’s size and weight, a reinforced concrete foundation might be necessary to ensure stability and prevent settling. The foundation must be perfectly level.

Anchor bolts or embedded plates for securing the furnace frame are precisely positioned during the foundation pouring process.

Safety Perimeter and Access Control:

Before the furnace arrives, the installation area is clearly marked with safety barriers.

Access to the site is restricted to authorized personnel only.

Phase 2: Furnace Delivery and Positioning

Careful Unloading and Handling:

Specialized lifting equipment (cranes, forklifts with sufficient capacity) is used to unload the furnace components from the transport vehicles.

Rigging and lifting procedures are meticulously planned and executed by experienced personnel to prevent damage to the equipment and ensure the safety of the workers.

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For more detailed information about glass tempering furnace installation, please click here: https://www.shencglass.com/en/a/news/glass-tempering-furnace-installation.html

The goal of tempering is to heat glass uniformly to near its softening point (around 620°C) and then rapidly cool (quench) it with air jets. This creates compressive stress on the surface and tensile stress in the core, resulting in stronger, safer glass. However, achieving consistent quality (flatness, low distortion, uniform stress, no breakage) across different glass types (clear, coated, Low-E, patterned), thicknesses, and sizes is challenging. Intelligent control systems aim to address these challenges.

Glass Tempering Furnace Intelligent Control

Here are key aspects and techniques used in intelligent control systems for glass tempering furnaces:

Advanced Sensing and Monitoring:

Thermal Scanners/Cameras: Provide detailed real-time temperature maps of the glass surface as it exits the furnace, crucial for identifying non-uniform heating.

Pyrometers: Multiple non-contact temperature sensors strategically placed within the furnace and quench.

Stress Measurement Systems: Online or offline systems (e.g., using photoelasticity) to measure residual stress patterns

Dimensional/Flatness Sensors: Laser or optical systems to measure glass flatness and warp.

Energy Consumption Monitoring: Tracking power usage of heaters and blowers.

Data Acquisition and Processing:

High-speed collection and storage of data from all sensors, furnace settings (heater power, convection levels, quench pressure, conveyor speed), and glass properties (type, thickness, dimensions).

Data cleaning, filtering, and feature extraction to prepare data for analysis and modeling.

Sophisticated Modeling:

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For more detailed information about the intelligent control system of glass tempering furnace, please click here: https://www.shencglass.com/en/a/news/intelligent-control-system-for-glass-tempering-furnace.html

To extend the service life of your vibrating screen and ensure efficient operation, a consistent and thorough maintenance program is essential.

How to extend the service life of vibrating screen

1. Regular Inspection

Frequency: Daily, weekly, and monthly inspections are crucial.

What to check:

Screen Media: Look for tears, holes, wear, proper tension, and cleanliness. Ensure it’s correctly installed and that gaskets (if required) are in place.

Structural Components: Examine the frame, supports, and cross beams for cracks, fatigue, or damage.

Fasteners: Regularly check and tighten all bolts, nuts, and other fasteners, especially on screen panels, clamping systems, and motor mounts. Re-tighten bolts after the initial 7 hours of work.

Springs: Inspect for wear, damage, and proper compression. Measure springs against OEM tolerances and replace as a complete set if out of tolerance.

Crown Bars: Ensure proper and continuous crown on all decks. Repair or replace according to the manufacturer’s guidelines.

Drive System: Inspect V-belts for wear, damage, and proper tension. Check for leaks in the drive system.

Mounting System: Ensure the machine is securely mounted and free from damage.

Safety Guards: Confirm they are firmly in place and not compromised.

Why: Early detection of issues prevents more significant damage and downtime.

2. Proper Lubrication

Frequency: Follow the manufacturer’s recommendations for lubrication intervals. Daily lubrication of drive bearings and ensuring grease lines are intact is often necessary.

What to do:

Lubricate bearings, drive mechanisms, and other moving parts with the recommended lubricant and quantities.

Inspect grease lines for leaks or blockages.

For central lubrication systems, perform thorough inspections weekly.

Monitor bearing temperature; overheating can indicate lubrication issues.

Why: Reduces friction and wear, preventing premature failure of moving parts.

3. Screen Cleaning

Frequency: Clean the screen surface regularly, the frequency depends on the material being screened. Daily cleaning is often necessary.

How to do it: Use a brush, air blower, or water spray (depending on the material and screen media) to remove buildup of material, debris, or blockages.

Why: Maintains efficient screening performance and prevents excess weight and strain on the screen.

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For more detailed information on how to extend the service life of the vibrating screen, please click here: https://www.zexciter.com/en/a/news/extend-the-service-life-of-vibrating-screen.html