The management of fastener form is used to enhance the impact analysis of equipment characteristics

Spring washers are a common type of locking device used in mechanical systems. If they are missing, misplaced, or not properly installed, they can significantly affect the reliability and lifespan of the machine. For example, if the engine fan's fixing screw is not secured with a spring washer, the loose fan blade may scrape against the cooling water tank, while also damaging the drive shaft below the nut. In some cases, forgetting to install a spring washer could even lead to a serious accident, such as a car rollover, which could result in loss of life. Maintaining the original performance state of threaded fasteners is essential during maintenance. This means that the type, position, and mechanical properties of the fasteners specified by the original design should not be altered. Using the correct fastener type ensures a reliable and detachable connection between components, which is crucial for mechanical maintainability. There are many types of fasteners designed for different purposes, and a common issue during repairs is the lack of attention to their specific characteristics. After disassembly, fasteners are often not properly sorted or stored, leading to confusion or improper replacement. Some technicians might use bolts of the same size but different thread types, which can cause damage. For instance, using steel bolts with a different thread profile in aluminum alloy parts can strip the threads, making the component difficult or impossible to repair. In such cases, costly repairs like reaming or tapping may be necessary, which can reduce the component’s strength and longevity. It is therefore important to carefully distinguish between different types of fasteners during maintenance. Standard metric threaded fasteners include bolts, screws, and studs, each available in coarse and fine thread variations. Bolts are widely used for general fastening, while stud bolts are preferred in applications where a bolt cannot be easily inserted, such as cylinder head bolts or half-shaft bolts. Coarse-threaded fasteners are typically used for non-moving parts, whereas fine-threaded ones are more suitable for high-stress areas like connecting rods or drive shafts. They are also ideal for attaching thin-walled components, such as the clutch cover to the flywheel.

Sensor Led Down Light

Specifications

Recessed LED Downlight with built-in Microwave Motion Sensor

Model AM-6.0GY
Luminous flux 800~900lm
Luminous Efficacy >80lm/W
Colour Rendering index 80
Beam Angle 140°
Light Decay <30% over 10,000 hours
Rated Lifespan >30,000 hours
Power consumption 10 watts
Input voltage / Frequency 80-260vac 50-60HZ
Reflector / Diffuser Frosted diffuser
Operating Environment -20°c~+50°c
Dimensions Φ193*77mm
Hole Cut Size Φ160~Φ180mm
LED Source 56pcs SMD2835
Working mode ON/OFF or Full/Dim
Sensor Range 180*360 degree
Sensor Distance 6-8m Radius
Delay Time 18-25s
led

Sensor Led Down Light,Recessed Led Down Light,Led Ceiling Down Light,Smart Down Light

JIANGMEN MOSCOT OPTOELECTRONIC TECHNOLOGY CO.,LTD. , https://www.sensorsled.com