LUOYANG MONTON BEARING SCIENCE & TECHNOLOGY CO.,LTD.
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7206BEA 30*62*16mm twin screw compressor bearings

7206BEA 30*62*16mm Twin Screw Compressor Bearings

Reference FOB Price:
US40 ~ 65 / Piece
Min. Order:
1 Piece
Stock:
1000 Piece
Production Capacity:
1000PCS/MONTON
Port:
Shanghai/Qingdao
Payment term:
T/T
Delivery time:
5-35 days
Technical Parameters:
Product Designations:
7206BEA
Old Designations:
7206BECBM
HS Code:
84821020.00
Structure:
Ball
Number of Rows:
Single row
Inside Diameter:
30 mm
Outside Diameter:
62 mm
Thickness:
16 mm
Weight:
0.06 KG
Dynamic load Capacity, Radial (Cr):
23700
Static load Capacity, Radial (Cor):
14300
Reference speed (Grease rpm):
14000
Limiting speed (Oil rpm):
18000
Demensions:
30*62*16mm
Brand:
MONTON
Radial Clearance Trade No.:
C0
Precision Rating:
P0
Vibration:
Z3V3
Load Direction:
Radial/Axial
Bearing Material:
Gcr15
Cage Type:
Brass
Cage material:
brass
Seals Type:
No seals
Number of Balls:
23
Ball Material:
Gcr15
Contact Angle:
40
Transport Package:
Single box
Shipping Ways:
Air/Sea
Country of Origin:
Luoyang
Service:
OEM
Quality Control:
Self control
Feature:
Balls
Application:
twin screw compressor
7206BEA 30*62*16mm Twin Screw Compressor Bearings

 

Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (N) Limiting Speed (min-1)
d D B r (min) r(min) Cr COr
7206BEA 30 62 16 1.0 0.6 23,700 14,300 14,000

Compared to bearing applications in other types of machinery, applications in twin screw compressors are more challenging for several reasons One is that bearing size is limited because of the ixed centre distance between the two rotors Another factor is that the rotor positioning accuracy must be high and so bearing clearance must be small and bearing runout tolerances small Bearing mounting and adjustment of rotor end clearance are other factors to consider in the selection of the bearing and bearing arrangement This chapter discusses the factors affecting the bearing application and offers recommendations on how to select a good bearing arrangement and suitable bearing type .


Bearings in twin screw compressors provide accurate radial and axial positioning of the rotors and support rotor loads These functions must be performed reliably, with low friction and low noise generation With accurate rotor positioning, it is possible to design compressors with small clearances for high eficiency A high radial positioning accuracy is achieved by using bearings with small operating clearances and small runout tolerances Axial positioning accuracy is accomplished by small axial bearing clearance or

preload Axial positioning is also affected by the it between the thrust bearing inner ring and the rotor shaft and bearing delection and displacement due to centrifugal forces.


Interference its will change the relative axial position of the bearing rings after mounting Axial positioning of the rotor is further  affected by the accuracy of the end clearance adjustment during assembly Thrust bearings mounted with interference its make the end clearance adjustment more dificult

The rotor centre distance can be a limitation in the bearing selection Since the rotor design affects the centre distance, the rotor design and bearing selection process is sometimes iterative The centre distance limits the outer diameters of the bearings.

Therefore, if one rotor carries a higher load, it is possible to select a larger bearing for this rotor and a smaller bearing for the other rotor This design option, however, conlicts with the desire to minimize the number of different bearings in the compressor It also requires additional tooling for the production

of the compressor housing.

The rotors can be supported on rolling bearings or on a combination of hydrodynamic and rolling bearings Small operating clearances are the main advantage of rolling bearings Rolling bearings also have lower

friction than hydrodynamic bearings, require less oil for lubrication and cooling, and are less sensitive to momentary loss of lubricant and looding of refrigerant than hydrodynamic bearings .

 


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