Refrigerator car working principle

As a new star in the special vehicle industry, refrigerator car coolers have broad prospects for development and they will grow along with the cold chain transportation industry. Refrigerated trucks cooler group is an important part of refrigerated trucks, we first look at the principles of refrigeration units, the current refrigerated trucks freezer group with more mechanical refrigeration, consistent with the principles of refrigeration air conditioners, refrigerators, etc., on a point Absorb heat and then give off heat at another point. The refrigerant absorbs heat through a coil (evaporator) in the cargo space and then dissipates heat through another coil (condenser) on the outside. The refrigerant is circulated in the system through a compressor.

1

The composition of the refrigeration system: refrigerant and four major parts, namely compressor, condenser, expansion valve, evaporator.

1. Compressor and compressor are the power of the refrigeration cycle. It is driven by the motor and keeps rotating. In addition to extracting the vapor in the evaporator in time to maintain the low temperature and low pressure, it also increases the pressure and temperature of the refrigerant vapor through compression, creating The conditions for the transfer of heat from the refrigerant vapor to the ambient media.

2, condenser, condenser is a heat exchange device, the use of ambient cooling medium (air or water), take away the heat from the cold compressor high temperature and high pressure refrigeration steam, cooling, condensing high temperature and high pressure refrigerant.

3, throttling components (ie, expansion valve), high-pressure liquid refrigerant at room temperature directly into the low-temperature scale evaporator, according to the saturation pressure and saturation temperature - corresponding principle, reduce the pressure of the refrigerant liquid, thereby reducing the refrigerant liquid temperature.

4, evaporator, evaporator is also a heat exchange device. After the throttling, the low-temperature and low-pressure refrigerant liquid evaporates (boils) into steam, absorbs the heat of the cooled material, lowers the temperature of the material, and achieves the purpose of freezing and refrigerating the food. In the air conditioner, the surrounding air is cooled to achieve the effect of cooling and dehumidifying the air.

Understanding the working principle and cooling method of refrigerator car cooler, for the enterprise, individual operators have a great role in their purchase of refrigerated trucks have a good guiding role.


Deep Groove Ball Bearing is the most common type among ball bearings.The basic structure of deep groove Ball Bearing include an outer ring,an inner ring, a group of steel ball and a set of cage. Deep groove ball bearing has two types: single row and double rows bearings. 6900-2RS bearing is made of Chrome Steel, 6900-2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination, 6900-2RS bearing is self lubricated bearing,6900-2RS bearing is already greased.


Model Number

6900 Series
Brand Name NMN OR OEM
Type Ball Bearing                                                                                           
 Structure Deep Groove
Number of Row Single Row
Seals Type OPEN ZZ 2RS
Precision Rating P0 P6 P5 P4
Specification 6900 To 6910
Steel Ball Amount 9-14. Depend on the ball size                                                                

Chamfer

0.3-0.6mm

Application

Machine & Rolling Mill

Certification

ISO9001:2008
ODM and OEM To order
MOQ 1 sample. Please contact with us for the lastest MOQ
Payment Terms L/C, T/T, Western Untion, PayPal, Bank, etc.
Packing Depend on the items. We also can packing it as your request

Bearing number Bore O.D Width Chamfer Load Rating Ball complement Maximum Seed Kg/pc
mm mm mm mm Dynamic Static No. Size Grease Oil
6900 10 22 6 0.5 2.7 1.27 12 2.381 2500 32000 0.009
6901 12 24 6 0.5 2.89 1.46 9 3.5 20000 28000 0.011
6902 15 28 6 0.5 4.1 2.06 10 3.969 19000 26000 0.016
6903 17 30 7 0.5 4.65 2.58 11 3.969 18000 24000 0.018
6904 20 37 7 0.5 6.4 3.7 11 4.763 17000 22000 0.036
6905 25 42 9 0.5 7.05 4.56 13 4.763 14000 18000 0.042
6906 30 47 9 0.6 7.25 5 14 4.763 12000 16000 0.148
6907 35 55 10 0.6 11.2 7.45 14 5.556 10000 14000 0.074
6908 40 62 12 0.6 14.5 10.2 14 6.747 8000 12000 0.11
6909 45 68 12 0.6 15.1 11.2 15 6.747 6000 10000 0.128
6910 50 72 12 0.6 15.6 12.2 16 6.747 4000 8000 0.132
Product Photo:

Bearing 6805

Bearing 6805 ZZ

6805

Packing:

1 Industry package: 200pcs/plastic bag, 2000pcs /carbon , 50 cartons/pallet , 
2 Tube Package: 10PCS/tube,then put in Carton and Pallet 
3 Single Package: 1PC/single box, then put in Carton and Pallet 
And also we can pack according to your requirement.

Packing Photo:

Thin-wall bearing 6900

Workshop:

Thin-wall bearing

Shippment:

Thin-wall bearing 6900 series

Exhibition:

Deep Groove Ball Bearing 6900



6900 Series Deep Groove Ball Bearing

6900 Series Deep Groove Ball Bearing,6900 Thin-Wall Ball Bearing,Thin-Wall Bearing 6900

Hebei Naimei Bearing Co., Ltd. , https://www.nmn-bearing.com