Several Considerations for the Optometry Room Decoration in Optical Shops
A Spherical bearing
is composed by an inner ring with a double raceway and an outer ring with
spherical surface, the outer raceway center is in accord with shaft center; all
having self-aligning function, which can compensate the mounting error between
the shaft and bearing seat and the outer ring inclination caused by shaft
deflection. They can carry large radial load and could also support any directional
axial load but not pure axial load. In particular, they are suitable for the
applications with heavy load or vibration.
Structures
20000Ctype is adopting spherical symmetrical rollers, no fixed
ribs on the inner ring; there are also two rows of independent solid cages.
This type of bearings is especially suitable for the applications with high
speed rotation.
20000CA are symmetric spherical
rollers, there are fixed ribs on the center of inner ring, the solid cage is
integrated. This type of bearings is widely applied and especially for
applications with heavy load.
Cage material
Machined
brass cage or pressed cage of steel sheet.
Permissible tilt angle
See
Table 1.
Tolerance and clearance
The tolerance of spherical roller
bearings is class 0 and class 6. The tolerance value is available in section
Rolling Bearing Tolerance.
Radial clearance of Spherical Roller Bearing is listed in Table 2 and 3.
Dynamic equivalent radial
load
when Fa/Fr≤e
Pr=Fr+Y1Fa
when
Fa/Fr>e Pr=0.67Fr+Y2Fa
e,
Y1,Y2 factors can be found in
the table of bearing dimension
Dynamic equivalent radial
load
P0r=Fr+Y0Fa
Y0 factors can be found in
the table of bearing dimension
Table 1 The permissible
angular misalignment
Bearing series
30
40
31
41
22
32
13
23
The
permissible angular misalignment
≤
1.5°
2°
1.5°
2.5°
1.5°
2.5°
1°
2°
Table 2 Radial
clearance of spherical roller bearing
with cylindrical bore
μm
Nominal bore diameter d
mm
C2
clearance
Standard
clearance
C3
clearance
C4
clearance
C5
clearance
Over
To
Min
Max
Min
Max
Over
To
Min
Max
Min
Max
14
18
24
30
40
50
65
80
100
120
140
160
180
200
225
250
280
315
355
400
450
500
560
630
710
800
900
18
24
30
40
50
65
80
100
120
140
160
180
200
225
250
280
315
355
400
450
500
560
630
710
800
900
1000
10
10
15
15
20
20
30
35
40
50
60
65
70
80
90
100
110
120
130
140
140
150
170
190
210
230
260
20
20
25
30
35
40
50
60
75
95
110
120
130
140
150
170
190
200
220
240
280
310
350
390
430
480
20
20
25
30
35
40
50
60
75
95
110
120
130
140
150
170
190
200
220
240
260
280
310
350
390
430
480
35
35
40
45
55
65
80
100
120
145
170
180
200
220
240
260
280
310
340
370
410
440
480
530
580
650
710
35
35
40
45
55
65
80
100
120
145
170
180
200
220
240
260
280
310
370
410
440
480
530
580
650
710
45
45
55
60
75
90
110
135
160
190
220
240
260
290
320
350
370
410
450
500
550
600
650
700
770
860
930
45
45
55
60
75
90
110
135
160
190
220
240
260
290
320
350
370
410
450
500
550
600
650
700
770
860
930
60
60
75
80
100
120
145
180
210
240
280
310
340
380
420
460
500
550
600
660
720
780
850
920
1010
1120
1220
60
60
75
80
100
120
145
180
210
240
280
310
340
380
420
460
500
550
600
660
720
780
850
920
1010
1120
1220
75
75
95
100
125
150
180
225
260
300
350
390
430
470
520
570
630
690
750
820
900
1000
1100
1190
1300
1440
1570
Table 3 Radial clearance of spherical roller bearing with tapered bore
μm
Nominal bore diameter d
mm
C2
clearance
Standard
clearance
C3
clearance
C4
clearance
C5
clearance
Over
To
Min
Max
Min
Max
Over
To
Min
Max
Min
Max
18
24
30
40
50
65
80
100
120
140
160
180
200
225
250
280
315
355
400
450
500
560
630
710
800
900
24
30
40
50
65
80
100
120
140
160
180
200
225
250
280
315
355
400
450
500
560
630
710
800
900
1000
15
20
25
30
40
50
55
65
80
90
100
110
120
140
150
170
190
210
230
260
290
320
350
390
440
490
25
30
35
45
55
70
80
100
120
130
140
160
180
200
220
240
270
300
330
410
460
510
570
640
710
25
30
35
45
55
70
80
100
120
130
140
160
180
200
220
240
270
300
330
370
410
460
510
570
640
710
35
40
50
60
75
95
110
135
160
180
200
220
250
270
300
330
360
440
490
540
600
670
750
840
930
35
40
50
60
75
95
110
135
160
180
200
220
250
270
300
330
360
400
440
490
540
600
670
750
840
930
45
55
65
80
95
120
140
170
200
230
260
290
320
350
390
430
470
520
570
630
680
760
850
960
1070
1190
45
55
65
80
95
120
140
170
200
230
260
290
320
350
390
430
470
520
570
630
680
760
850
960
1070
1190
60
75
85
100
120
150
180
220
260
300
340
370
410
450
490
540
590
650
720
790
870
980
1090
1220
1370
1520
60
75
85
100
120
150
180
220
260
300
340
370
410
450
490
540
590
650
720
790
870
980
1090
1220
1370
1520
75
95
105
130
160
200
230
280
330
380
430
470
520
570
620
680
740
820
910
1000
1100
1230
1360
1500
1690
1860
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The optometry room is an indispensable work space for every optical shop operation. In the optometry room, not only the purchaser can understand their vision, but also can easily diagnose whether the glasses they choose are suitable for themselves. Therefore, it is not difficult to see the importance of the optometry room in the decoration of the optical shop.
Optometrists are generally suitable for use in separate areas that are separated from the rest of the working environment. The length of optometry is 2.7 meters to 3 meters. With a combined refractometer, the overall width of the di is not less than 1.8 meters wide. The wall of the optometry room allows light steel keel plasterboard to be replaced with tempered art glass. The color of the interior space is suitable for bright and bright, it is not appropriate to use dark colors.
In the optical shop decoration, if a store has an independent space suitable for the optometry area, then we only need to do the appropriate basic decoration in the space, such as the top ceiling, the installation of lamps, the wall of the powder, switch socket Installation, ground handling, etc. If there is no separate space in the store or the optical shop is open in a supermarket, we need to use light and secure light steel keel plaster board to make an independent optometry area.
The reason why the selection of light steel keel paper gypsum board production process is not only low cost, simple production process, the main thing is that in certain occasions, can meet the relevant industry acceptance standards. When making the length of the optometry room, it must not be less than 3 meters. The height of the installed eye chart on the wall is a little more than the height of an adult sitting on the head of the chair, and the socket is reserved under the eye chart. The height of the reflector mounted on the opposite wall of the eye chart needs to reflect the person's head and vision. Below the suitable place for the optometrist, one or two sockets need to be installed.
In the manufacturing process of the optometry room, we must first consider in advance what optometry equipment to be placed in the optometry room, is an ordinary computer optometry table or combined optometry table, if the latter, due to the larger size of the combined type Many places, in the production of the width of the optometry room, can not be less than 1.8 meters, otherwise it will be a very painful thing to use.
Optometry room as the most important place for optical shops, in the optical shop decoration is very important, you must be careful about the owner! The Sunshine Sight Decoration Group is market-oriented and focuses on the actual sales demand for optical glasses. It integrates the most advanced design concepts at home and abroad into spectacles decoration and is dedicated to providing customers with high-quality, cost-effective and value-added services.
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