Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T7849-95
Radial Elastic Pin Coupling
Published on December 1, 1995
Ministry of Machinery Industry of the People's Republic of China
Implementation on July 1, 1996
Mechanical Industry Standard of the People's Republic of China
Radial Elastic Pin Coupling
1 Subject Content and Scope of Application
JB/T7849-95
This standard specifies the type, basic parameters and main dimensions, technical requirements, inspection rules and marking, packaging, storage, etc. of radial elastic pin couplings (hereinafter referred to as couplings). The couplings specified in this standard are suitable for connecting two coaxial transmission shafts, have certain radial, axial and angular displacement compensation and dew reduction and buffering performance, and have a working temperature of -35 to +80℃ and a nominal torque of 1250 to 355000N·m. 2 Reference standards
GB/T528
GB/T529
GB/T531
GB 699
GB/T1681
GB1682
GB1683
GB1689
GB/T1690
GB3512
GB3852
GB4879
GB11352
Determination of tensile properties of vulcanized rubber and thermoplastic rubberDetermination of bursting strength of vulcanized rubber (trouser-shaped, right-angled and crescent-shaped test specimens)Test method for Shore A hardness of vulcanized rubber
Technical conditions for high-quality carbon cable structural steel
Carbon structural steel
Resilience of vulcanized rubber Determination
Test method for brittle temperature of vulcanized rubber
Test method for constant deformation compression permanent set of vulcanized rubberDetermination of wear resistance of vulcanized rubber (using Ackerman abrasion machine)Test method for liquid resistance of vulcanized rubber
Test method for hot air aging of rubber
Type and size of coupling shaft hole and keywayRust-proof packaging
Manufactured carbon steel parts for general engineering
3 Type, basic parameters and main dimensions
3.1 Type, basic parameters and main dimensions
3.1.1 LJ type - basic type coupling, its type is shown in Figure 1. The basic parameters and main dimensions shall comply with the provisions of Table 1. 3.1.2 LJD type - single flange type coupling, its type is shown in Figure 2. The basic parameters and main dimensions shall comply with the provisions of Table 2. - Brake wheel type coupling, its type is shown in Figure 3. 3.1.3 LJZ type -
Basic parameters and main dimensions shall comply with the provisions of Table 3. 3.1.4 LJJ type - intermediate shaft type coupling, its type is shown in Figure 4. Basic parameters and main dimensions shall comply with the provisions of Table 4. 3.1.5 The type and size of the coupling shaft hole and key precision shall comply with the provisions of GB3852. 3.2 Model indication method
Approved by the Ministry of Machinery Industry on December 1, 1995
Implementation on July 1, 1996
3.3 Marking example
Example 1, LJ4 coupling
JB/T 784995
Coupling specification code
Coupling type code (basic type has no code) D--single flange type, Z-brake wheel type, J-intermediate shaft type
Radial elastic pin coupling
Driving end: Y-type shaft hole. A-type keyway, d, = 42mm, L = 112mmDriven end: Y-type shaft hole, A-type keyway, d; = 42mm, L =112mmLJ4 coupling 42X112JB/T7849-95
Example 2: LJD1 coupling
Half coupling end: J-type shaft hole. A-type keyway.d,=25mmL=44mmFlange end: Y-type shaft hole. A-type keyway.d;=30mm, L=82mmLJD1 coupling J25×44×30/82JB/T7849 -95Example 3: LJZ3 coupling
Half coupling end: Y-type shaft hole. A-type chain groove. d,=45mm.L=112mmBrake wheel: Z-type shaft hole. C-type key precision, d,=40mm.L=84mmLJZ3 coupling 45×112/2C40×84JB/T7849-95Example 4: LJJ2 coupling
Flange end: J-type shaft Hole. Type A key grid, d, = 30mm, L = 60mm, connected to the intermediate shaft end: J-type shaft hole. Type A keyway d = 40mm. L = 84mmLJJ2 coupling J, 30×60/J, 40×84JB/T7849-953.4 Relative offset compensation of the two axes
The allowable radial compensation △Y, axial compensation AX, and angular compensation Aa of the coupling are shown in Table 5. Y-type shaft hole
J-type shaft hole
With shaft hole
Z-type contact
Figure 11J-type diameter elastic pin coupling
Nominal rotating wing
Permissible speed
JB/T7849-95
Shaft hole diameter
30,32.35,38
4042,(45),(48)
30,32,35,38
40,42，45，48，(50),
(55 ), (56) | | tt | 0,71.75
40,42,45.48,50,55,56
60,63,65,70,71.75
80 ,85,(90),(95)
60.63.65.70.71,75
80.85.90.95
100,110
60,63,65,70,71,75
80.85,90,95
100,110,(1 20)
70,71,75
80,85,90,95
100,110,120,125
130 , 140 | | tt | t||380190
420220
470250
0.02611.9
1000.16631. 4
Nominal torque
100000
125000
160000
250000
355000
Permissible speed
JB/T784995
Continued Table 1
Shaft hole diameter
100,110,120,125
130,140,150
160,170,(180)
100,110,120,125
130,140,150
160,170,180
110,120.125
130,140, 150
160+17 0,180 | |tt||190.200.220
160,170,180
190,200,220
240,250,260
160,170,180
190,200,220
240,250,260
Note: ① The hole diameter in brackets is not applicable to the J-type and Z-type ink shaft holes. The shaft
Y-type J,Type
②The weight and moment of inertia in the table are approximate values calculated based on the largest entity of the coupling, J type, Z type
530280
580280
630310
680340
740370
840400
940400
Nominal rotation
Y type shaft hole
Permissible speed
J type shaft without
semi-coupler end
JB/T7849-95
Figure 2LJD type radial elastic pin coupling
Shaft hole diameter
30,32,35,38
40 .42.45,48
30,32.35,38
40,.42.45,48,(50)
(55),(56)
30,32,35,38
40,42.45,48,50.55,56
60,63+65 ||t t | ,( 90),(95)
Shaft hole length
Y type J type
Type 3 shaft hole
Type 2 shaft hole
Tooth orchid
J type, type 2
200100
0.03113.2
1020.05820.6
22412050115|0.1934.4
591320.3856.2
265|140
Nominal torque
100000
125000
Permissible speed
JB/T7849-95
Table 2 continued
True diameter of shaft hole
60,63,65,70.71.75
80.85,90.95
100,110
60,63,65,70,71,75
80.85.90,95
100.110.(120)
80 ,85,90,95
100,110,120,125
130,140
80.85,90.95
100,110,120,125
130+140,150
100,110,120,125|| tt| |130,140,150
160,170.(180)
100.110,120,125
130.140.150
160,170,180
110,120.125
130,140,150||t t||160.170,180
190,200
110,120,125
130,140,150
160,170,180
190,200,220
32 017059
380190
420220
470250
kg·m?
530280
630310
680340
Nominal torque
160000
250000
355000
Permissible speed
JB/T7849-95
Continued Table 2
Shaft hole diameter
160.170,180
190,200,220
160.170.180
190,200,22 0
240,250,260
160.170.180
190.200.220
240.250.260
Note, ① The diameter in brackets is not applicable to "type, Z type shaft hole, shaft hole
Y plastic J type
② The weight and moment of inertia in the table are approximate values calculated based on the largest entity of the coupling J shaft hole
Z type shaft hole
With brake wheel
J type, Z type
J, type shaft hole
Figure 3LJZ type radial elastic pin coupling
0370100232
400102236
4001 05
Y-type shaft hole
Half coupling end
JB/T784995
Lei Xu『
$6*06*S8*08
S60658*08
1259**09
f1*0ot
$6*06*58*08
(S6)*(06)*58*08
S\1*02*9**09
955*8*
210159909
S9*99*09
(9)*(S)*(0)*8*SF*2**0)
(8F)*(S+)*0150
160.170,180
190,200
110,120,125
130,140,150
160,170,180
190,200,220
tt||J type, Z type
32017059
380190www.bzxz.net
420220
470250
kg·m?
530280||tt ||630310
68034 0
Nominal torque
160000
250000
355000
Permissible speed
JB/T7849-95
Table 2 continued
Shaft hole diameter
160.170,180
190,200,220
160.170.180
190,200,220
240,250,260
160.170.180
190.200.220
240.250.260
Note: ① The hole diameter in brackets is not applicable to the "" type and Z type shaft hole, shaft hole
Y type and J type
② The weight and moment of inertia in the table are Approximate value calculated based on the largest entity of the coupling J shaft hole
Z type shaft hole
With brake wheel
J type, Z type
J, type shaft Hole
Figure 3LJZ radial elastic pin coupling
0370100232
400102236
400105
Y-type shaft hole
Half Coupling end
JB/T784995
Thunder need「
$6*06*S8*08
S60658*08
1259**09
f1*0ot|| tt||$6*06*58*08
(S6)*(06)*58*08
S\1*02*9**09
955*8*
210159909
S9*99*09
(9)*(S)*(0)*8*SF*2**0)
(8F) *(S+)*0150
160.170,180
190,200
110,120,125
130,140,150
160,170,180
190,200,220
tt||J type, Z type
32017059
380190
420220
470250
kg·m?
530280||tt ||630310
68034 0
Nominal torque
160000
250000
355000
Permissible speed
JB/T7849-95
Table 2 continued
Shaft hole diameter
160.170,180
190,200,220
160.170.180
190,200,220
240,250,260
160.170.180
190.200.220
240.250.260
Note, ① The hole diameter in brackets is not applicable to the "" type and Z type shaft hole, shaft hole
Y type and J type
② The weight and moment of inertia in the table are Approximate value calculated based on the largest entity of the coupling J shaft hole
Z type shaft hole
With brake wheel
J type, Z type
J, type shaft Hole
Figure 3LJZ radial elastic pin coupling
0370100232
400102236
400105
Y-type shaft hole
Half Coupling end
JB/T784995
Thunder need「
$6*06*S8*08
S60658*08
1259**09
f1*0ot|| tt||$6*06*58*08
(S6)*(06)*58*08
S\1*02*9**09
955*8*
210159909
S9*99*09
(9)*(S)*(0)*8*SF*2**0)
(8F) *(S+)*0
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