The electric spindle is a precision high speed motor with the following main features :
 1. The bearings all adopt C -class high-speed angular contact ball bearings, and the axial direction is preloaded to improve the bearing rigidity and grinding precision of the spindle under high-speed rotation.
2 , the use of precision steel ball retainer to ensure the rotation accuracy of the electric spindle during high-speed grinding.
3 , the electric spindle is generally lubricated with 5# spindle oil mist.
4. The cooling of the electric spindle housing is cooled by the cooling liquid circulation to reduce the heat generated by the high-speed rotation and reduce the temperature rise.
   Instructions for use       Â
  1. When using, firstly, the oil pipe must be connected first, so that the electric spindle can be started after the oil pipe is connected first.
The water pipe and the oil pipe cannot be connected incorrectly when installed. The left and right sides of the main shaft are water pipes, and the middle is a oil pipe. The following methods are not used for grease lubrication of CNC drilling machine spindles. ( see Figure 1 for details )
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2. When using, the oil mist pipe should be connected first, and the oil mist pipe joint should be cleaned. Prevents the ingress of dirt and causes the bearing to burn out. Then, the lubricating oil mist is supplied to the electric spindle, so that the electric spindle can be started after the oil mist is discharged from the front end of the electric spindle. The oil mist lubrication is recommended to use the No. 5 spindle oil to adjust the oil intake amount to 20-30 drops / min, and often check. Should meet the requirements to avoid oil breakage and damage to the spindle.
3, before driving, by hand rotation of the shaft, if blocking is not flexible feeling, and troubleshooting should check a direction of rotation of the spindle, the spindle end should see if the counter-clockwise direction does not match the power wiring should be changed, so that Match.
4. The electric spindle must be turned off after the spindle has completely stopped rotating. Under normal operation, it can generally run continuously for a long time, but the start should not be too frequent.
5 must be checked before using the wheel lever is connected coaxially, such as more than 0.03 mm different axes of the grinding wheel should be replaced connecting rod, or both spindle damage, but not grinding the workpiece. Be careful not to bump when grinding, and then grind it after correction.
     Maintenance and maintenance
  1. The rated voltage of the intermediate frequency power supply connected to the electric spindle should be consistent with the technical parameters of the electric spindle. The speed of the electric spindle can be adjusted by changing the frequency, and the voltage is also proportional to the change.
2. During the use, avoid accidental impact on the end of the shaft of the electric spindle and the workpiece.
3 , the used electric spindle is temporarily not used, use compressed air to blow the coolant inside the water pipe, so as not to avoid
Rusty, blocking the water hole. The outer surface of the electric spindle should be coated with anti-rust oil, and the shaft end should be protected by a protective device and stored in a dry place.
4 should try to reduce the air run and improve the service life.
5. If the electric spindle needs to be replaced, it should be replaced by a certain professional technician. Supporting special tools, should be thoroughly cleaned when replacing bearings, stator coils do not have to be removed
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Changzhou Wujin District Henglin Jinggong Motor Factory
Address : No. 6 , Changsheng Road , Henglin Town , Wujin District , Changzhou City, Jiangsu Province
Tel: +86-519- 88785312
Fax: +86-519- 88785312
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Website: www. d ianzhuzhou.net
A ball check valve is a check valve in which the closing member, the movable part to block the flow, is a spherical ball. In some ball check Valves, the ball is spring-loaded to help keep it shut. For those designs without a spring, reverse flow is required to move the ball toward the seat and create a seal. The interior surface of the main seats of ball check valves are more or less conically-tapered to guide the ball into the seat and form a positive seal when stopping reverse flow.
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There are similar check valves where the disc is not a ball, but some other shape, such as a poppet energized by a spring. Ball check valves should not be confused with Ball Valves, which is a different type of valve in which a ball acts as a controllable rotor to stop or direct flow.
A diaphragm check valve uses a flexing rubber diaphragm positioned to create a normally-closed valve. Pressure on the upstream side must be greater than the pressure on the downstream side by a certain amount, known as the pressure differential, for the check valve to open allowing flow. Once positive pressure stops, the diaphragm automatically flexes back to its original closed position.
A swing check valve or tilting disc check valve is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle. Although swing check valves can come in various sizes, large check valves are often swing check valves. The flapper valve in a flush-toilet mechanism is an example of this type of valve. Tank pressure holding it closed is overcome by manual lift of the flapper. It then remains open until the tank Drains and the flapper falls due to gravity. Another variation of this mechanism is the clapper valve, used in applications such firefighting and fire life safety systems. A hinged gate only remains open in the inflowing direction. The clapper valve often also has a spring that keeps the gate shut when there is no forward pressure. Another example is the backwater valve (for sanitary drainage system) that protects against flooding caused by return flow of sewage waters. Such risk occurs most often in sanitary drainage systems connected to combined sewerage systems and in rainwater drainage systems. It may be caused by intense rainfall, thaw or flood.
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A pneumatic non-return valve.
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Check Valves, Water Check Valves, Brass Check Valves, Sanitary Check Valves
ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsir-valves.com