1. Sliding bearings can also be lubricated with grease. The following points should be considered when selecting grease:

(1) When the bearing load is large and the rotation speed is low, the grease with a small penetration degree should be selected, and vice versa. High-speed bearings use grease with a small degree of penetration and good mechanical stability. Special attention is paid to the lower viscosity of the base oil of the grease.

(2) The dropping point of the selected grease is generally higher than the working temperature of 20-30 ° C. In the case of continuous operation at high temperature, be careful not to exceed the allowable operating temperature range of the grease.

(3) When the sliding bearing works in water or humid environment, it should choose calcium-based, aluminum-based or lithium-based grease with good water resistance.

(4) Select a grease with good adhesion.

2. Selection of grease for sliding bearings:

The load is <1MPa, the circumferential speed of the journal is less than 1m/s, the maximum working temperature is 75°C, and the calcium base grease No. 3 is used;

The load is 1-6.5MPa, the circumferential speed of the journal is 0.5-5m/s, the maximum working temperature is 55°C, and the calcium base grease No. 2 is used;

The load is >6.5MPa, the circumferential speed of the journal is less than 0.5m/s, the maximum working temperature is 75°C, and the calcium base grease No. 3 is used;

The load is <6.5MPa, the circumferential speed of the journal is 0.5-5m/s, the maximum working temperature is 120°C, and the No. 2 lithium grease is used.

The load is >6.5MPa, the circumferential speed of the journal is less than 0.5m/s, the maximum working temperature is 110°C, and the calcium-sodium grease of No. 2 is used;

The load is 1-6.5MPa, the circumferential speed of the journal is less than 1m/s, the maximum working temperature is 50-100°C, and the No. 2 lithium grease is used.

The load is >5MPa, the circumferential speed of the journal is 0.5m/s, the maximum working temperature is 60°C, and the No. 2 calendering grease is used;

Calcium-sodium based grease should be considered in a humid environment at temperatures between 75 and 120 °C. In a humid environment, the working temperature is below 75 ° C, there is no calcium base grease No. 3, and aluminum base grease can also be used. When the working temperature is 110-120 ° C, lithium base grease or sulfhydryl base grease can be used. When concentrated lubrication, the consistency is smaller.

3. Lubrication cycle of grease for sliding bearings:

Occasionally, unimportant parts: shaft speed <200r/min, lubrication cycle once every 5 days; shaft speed >200r/min, lubrication cycle once every 3 days.

Intermittent operation: shaft speed <200r/min, lubrication cycle once every 2 days; shaft speed >200r/min, lubrication cycle once every day.

Continuous operation, working temperature is less than 40 °C: shaft speed <200r/min, lubrication cycle once every day; shaft speed>200r/min, lubrication cycle once per shift.

Continuous operation, working temperature 40-100 °C: shaft speed <200r/min, lubrication cycle once per shift; shaft speed >200r/min, lubrication cycle twice per shift.

Electronic Cigars

Electronic cigarettes are mainly composed of three parts: a pipe containing nicotine solution, an evaporation device and a battery. The atomizer is powered by a battery rod, which can convert the liquid nicotine in the cartridge into mist, so that the user has a smoking-like feeling when inhaling, and realizes "puffing the cloud". It can add various flavors of spices such as chocolate and mint to the pipe according to personal preference.

tobacco rod
The internal structure of the cigarette rod uses the same basic components: a light PCBA board, rechargeable batteries, various electronic circuits.
Most electronic cigarettes use lithium-ion and secondary battery power components. Battery life depends on battery type and size, usage and operating environment. And there are many different types of battery chargers to choose from, such as socket direct charging, car chargers, and USB interface chargers. The battery is the largest component of an e-cigarette.
Some e-cigarettes use an electronic airflow sensor to activate the heating element, which activates the battery circuit upon inhalation. Whereas manual induction requires the user to press a button and then smoke. Pneumatic is easy to use, the manual circuit is relatively more stable than the pneumatic, and the smoke output is better than the pneumatic. With the development of hardware and software, some manufacturers have begun to develop fully automatic machines to manufacture electronic cigarettes, eliminating the use of manual wiring, welding or electronics to achieve higher safety and reliability.

Electronic cigarette stick,Electronic Cigars,E cigarette,Fruit flavor electronic cigarette

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