aluminium casement windows,aluminum casement windows,aluminum casement,casement window aluminum SMIRO DOORS AND WINDOWS CO., LTD , https://www.smirowindows.comRepair of Flywheel and Crankshaft Bearings
The flywheel is a critical component in the engine system, responsible for storing rotational energy and providing smooth operation. The working surface that comes into contact with the clutch must be carefully inspected. If there are signs of severe scoring, cracking, or wear, it may lead to clutch vibration, slippage, and accelerated wear of the friction plate. If the groove depth exceeds 0.5 mm, it should be resurfaced. Light grinding is acceptable, but only if the surface shows annular groove marks without any remaining irregularities.
If the flywheel's tooth ring is worn or damaged, it can be repositioned or reversed depending on the situation. However, if more than four adjacent teeth are damaged or the damage is severe, the tooth ring should be repaired or replaced. When pressing the gear ring into place, it should be heated to a temperature between 300–400°C to ensure proper installation.
Regarding crankshaft bearings, the upper bearing cap must be tightened according to the manufacturer’s recommended torque specifications. It’s essential to check the out-of-roundness of the bearing housing bore using a cylinder table. If the deviation exceeds 0.05 mm, welding or shimming on both ends of the bearing cover may be necessary to correct the alignment.
When installing new bearings, tighten the bearing cap nut first, then loosen it slightly before measuring the clearance with a feeler gauge. The ideal clearance should be between 0.05–0.1 mm. If the clearance is too large, remove a small amount of material; if it's too small, consider starting over with a different bearing. In cases where specific data is unavailable, you can add copper shims of equal thickness on the opposite side of the bearing. Ensure the bearing surface is clean and free of debris, and the locating protrusion remains intact.
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Source: China Bearing Network | Date: March 9, 2014
Aluminum alloy casement window is a common type of window with the following characteristics:
1. Structural characteristics
Frame
The frame is made of aluminum alloy profiles, which have the advantages of light weight, high strength and corrosion resistance. Its cross-sectional shape is diverse and can be selected according to different design requirements and stress conditions to ensure the stability of the window.
Opening method
The window sash is connected to the window frame through hinges and can be opened outward or inward. The outward opening type does not occupy indoor space and has a wide field of vision, but has higher requirements for the sealing and safety of the window; the inward opening type is convenient for cleaning the outside of the window, but it will occupy a certain amount of indoor space.
2. Performance characteristics
Good sealing
When the casement window is closed, the window sash fits tightly with the window frame, and with high-quality sealing strips, it can effectively prevent rain, dust and noise from entering the room. Its sealing performance is better than that of sliding windows, which can better maintain the indoor environmental quality.
Good ventilation
The opening angle can be adjusted according to needs to achieve good ventilation effect. Some casement windows can also be equipped with limit devices to control the opening angle to ensure safety while achieving ventilation.
Strong security
Hardware accessories such as hinges and locks can provide better security. If the outward-opening casement window adopts a multi-point lock system, it can effectively prevent the window sash from being pried open by external force; the inward-opening casement window is easy to operate indoors, and the safety can also be enhanced by adding guardrails.
3. Aesthetics and durability
Aesthetics
Aluminum alloy profiles can be subjected to a variety of surface treatments, such as anodizing, powder coating, fluorocarbon coating, etc., which can present different colors and textures, and can match various architectural styles to enhance the overall aesthetics of the building.
Durability
Aluminum alloy itself has good corrosion resistance and is not easy to rust. With proper maintenance, its service life is long. However, the quality of hardware accessories has a greater impact on the overall durability of the window. High-quality hardware accessories can ensure the long-term and stable use of the window.