Deep Groove Ball Bearing
Deep groove ball bearing are the most common type and are used in a wide variety of applications. Not only they are capable of supporting radial loads but also moderate axial loads in either direction. Due to their low torque, they are suitable for applications where high speed and low power loss is required. They are easy to mount and suitable for many different configurations.
Model Number
6000 series,6200 series, 6300 series, 600 series
Brand Name
NMN OR OEM
Structure
Deep Groove
Type
Ball
Bore Size
4-800(mm)
Outside Diameter
4-1150(mm)
width
1.6-155(mm)
Seals Type
OPEN, 2Z, 2RS, Z, RS
Ring Material
Chrome Steel ,Carbon steel,Stainless steel
Cage material
Nylon ,steel , brass
Clearance
C0,C2,C3,C4,C5
Vibration
Zv1,Zv2 and Zv3
Precision Rating
P0,P6,P5
Lubrication
Grease
Number of Row
Single Row
Guarantee
One year.
Application
Home appliances, low noise and high speed electric motors,
automotive components, pumps, machinery.
Certifications
ISO 9001:2000
Package
Opp bag or Plastic tube
Place of Origin
China (Mainland)
MOQ
1PCS
Service
(1) Prompt Delivery
(2) OEM
(3) Good Service Offered
(4) Buyer Label Offered
Payment Term
TT or L/C or Western Union
Port
Qingdao or Tianjin or Shanghai
Details
1,Low price
2.Low vibration
3.high rolling accuracy
Shippment:
Workshop:
Exhibition:
Deep Groove Ball Bearing,Radial Ball Bearing,6000 Series Deep Groove Ball Bearing,6200 Series Deep Groove Ball Bearing Hebei Naimei Bearing Co., Ltd. , https://www.nmn-bearing.com
The resistance of the breaker circuit is mainly determined by the contact resistance between the dynamic and static contacts of the circuit breaker. The existence of contact resistance increases the loss of the conductor during power-on, and increases the temperature at the contact. The value of the value directly affects the current-carrying capacity during normal operation, and affects the cutting-off capability of the short-circuit current to some extent. Therefore, the circuit breaker resistance per phase is an important data for circuit breaker installation, maintenance and quality acceptance.
There are many ways to measure the contact resistance. Japanese scholar Isao Minowa proposed using superconducting quantum devices to measure contact resistance. H.Archi proposed using electrolyzer method to measure contact resistance. Polish scholar Jerzy Kaczarek proposed using third harmonic method to measure contact resistance. These methods are generally conducted under laboratory conditions. The method used by the institute. In engineering, the four-terminal method is usually used to measure the contact resistance of actual contacts.
In the past, a DC dual-arm bridge was commonly used to measure the contact resistance of a circuit breaker. However, when using two-arm bridges to measure the circuit breaker's conducting loop resistance, it is difficult to eliminate the oxide film with a large resistance because the two-arm bridge measurement loop passes a weak current, and the measured resistance value is too large. However, the oxide film is easily broken at a large current and does not prevent the normal current from passing through. Therefore, the test should not be too small when using the DC voltage drop test.
The HLY-100A loop resistance tester independently developed by Yangzhou City Fei Ke Te Electric Co., Ltd. adopts the latest power supply technology, high precision, small size, light weight, simple wiring, making the previously very troublesome on-site circuit breaker loop resistance test become more Easy and more convenient.
Product Show:
How to measure the loop resistance of circuit breaker with high current?
Power Systems Many high-current electrical devices need to accurately measure the resistance of loops in preventive tests and hand-off tests. The circuit breaker is an important electrical equipment in the power system. The national standard GB763, GB50150 and the power industry standard DL/T596 make provisions for the measurement of the circuit breaker's conductive loop resistance: DC voltage drop method should be used to measure and the current should not be less than 100A.