Holip VFD Frequency Converter HLPC+02D223A

07/11/2025

Speed-Torque Curve of Stepper Motors and FAQs

This is the torque the motor will produce when the motor is stationary and rated current is applied to the windings.

05/15/2025

How to Tell if the Home AC Compressor is Bad

The compressor of the air conditioner can be said to be the core part of the air conditioner. Once there is a problem, the air conditioner will not work normally.

08/12/2020

Reasons for the increase in condenser pressure in cold storage projects

The role of the cold storage is to ensure the quality of the stored items. With the country’s support for the construction of cold storage, cold storage projects have appeared in more places,

07/07/2020

Earth Hour: Hitachi Central Air Conditioner works with you to speak for the earth

06/14/2020

Air conditioning maintenance, nine times out of ten, said that lack of fluoride, is it true or false How to judge the lack of fluoride in air conditioner

Air conditioning maintenance, nine times out of ten, said that lack of fluoride, is it true or false How to judge the lack of fluoride in air conditioner Every summer, the air conditioner is used most frequently, and the failure rate of the air condition器2䀀
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09/11/2020

Bearing and shaft fit tolerance standard

Bearing and shaft fit tolerance standard ①When the bearing inner diameter tolerance zone and the shaft tolerance zone form a fit, the tolerance code originally belonging to the transition fit in the general basic hole system will become an over-win fit, such as k5, k6, m5, m6, n6, etc., but the over-win amount is not Large; when the bearing inner diameter tolerance is matched with h5, h6, g5, g6, etc., it is not a clearance but an over-win fit.

09/10/2020

Knowledge of air compressor oil lubrication

Knowledge of air compressor oil lubrication What is the lubrication principle of air compressor oil? The lubrication principle of air compressor oil is to reduce friction. The so-called friction means that when two relatively moving surfaces undergo relative displacement under the action of external force, there is a relative contact surface called friction surface.

08/17/2020

Comparison of advantages and disadvantages of air duct machine, water chiller and multi-line

1. Ducting machine-Ducting system 　　 duct type system, as its name implies, uses air as the conveying medium. It uses chillers to centrally produce cold energy, cools/heats the fresh air

06/14/2020

What is a refrigeration compressor and how does it work

What is a refrigeration compressor and the working principle of a refrigeration compressor A refrigeration compressor is the most important equipment in a refrigeration device, and is usually called the host in the refrigeration device. Refrigerant vapor ﰸ2䀀
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04/24/2023

How to Change Air Compressor Oil (5 Steps)

Air compressor oil is mainly used for the lubrication of the moving parts in the compressor cylinder and the exhaust valve, and plays the role of anti-rust, anti-corrosion, sealing, sound reduction and cooling.