JB/T 3241-1991 SWP type split bearing seat cross shaft universal coupling JB/T3241-1991 standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
SWP Partial Bearing Seat
Cross-Shaft Universal Coupling
1 Subject Content and Scope of Application
JB 3241-91
Replaces JB3241·83
This standard specifies the type, basic parameters and dimensions, technical requirements, inspection rules and markings, packaging, storage, etc. of the cross-shaft universal coupling with a partial bearing seat (hereinafter referred to as the universal coupling). The universal coupling specified in this standard is mainly suitable for rolling machinery, lifting and transportation machinery and other heavy machinery to connect the transmission shaft system of two different axes. Its rotary diameter is 160~640mm; the nominal torque is 16~1250kN·m; the axis angle A~F type ≤10°, G type ≤5°.
2Reference standards
GB 197
GB1144
GB 1184
GB1801
Packaging, storage and transportation pictorial symbols
Tolerances and fits of common threads
Dimensions, tolerances and inspections of rectangular splines
Shape and position tolerancesTolerances and fits of dimensions without tolerancesTolerance zones and fits of holes and shafts up to 500 mmGB 3098.1
GB4879
Mechanical properties of fastenersMechanical properties of bolts, screws and studsFasteners
Rust-proof packaging
GB6388
GB7284
JB 2759
Fine pitch nuts
Marks for shipping and receiving of transport packaging
Frame wooden box
Packaging of electromechanical products
General technical conditions
JB/ZQ4000.1~4000.10General technical conditions 3 Types, basic parameters and dimensions
3.1 Types are divided into the following seven types, see Table 1. Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on July 10, 1991346
Implemented on July 1, 1992
Type code
Long type with telescopic
Short type with telescopic
Short type without telescopic
Long type without telescopic
Double-method telescopic
Long type with blue
JB 3241
Type code
Large telescopic long type
With telescopicbzxz.net
Ultra-short type
3.2 Universal coupling model
3.3 Marking example
JB3241-91
Continued Table 1
Type code (see Table 1)
Swing diameter, mm
Split bearing seat cross-shaft universal coupling a. Swing diameter L=315mm, installation length L=1800mm, E type with telescopic double flange long universal coupling SWP315EX1800 coupling JB3241-91
b. Swing diameter D=285mm, installation length L=600mm, C-type non-telescopic short universal coupling SWP285CX600 coupling JB3241--91
3.4 ​​Basic parameters and dimensions
3.4.1 The basic parameters and dimensions of type A universal coupling shall comply with the provisions of Figure 1, Table 2 and Table 9. 3.4.2 The basic parameters and dimensions of type B universal coupling shall comply with the provisions of Figure 2 and Table 3. 3.4.3 The basic parameters and dimensions of type C universal coupling shall comply with the provisions of Figure 3 and Table 4. 3.4.4 The basic parameters and dimensions of type D universal coupling shall comply with the provisions of Figure 4, Table 5 and Table 9. 3.4.5 The basic parameters and dimensions of type E universal coupling shall comply with the provisions of Figure 5, Table 6 and Table 9. 3.4.6 The basic parameters and dimensions of type F universal coupling shall comply with the provisions of Figure 6, Table 7 and Table 9. 3.4.7 The basic parameters and dimensions of G-type universal coupling shall conform to the requirements of Figure 7 and Table 8. 3.18
JB3241—91
（6)7
VDO2dMS
V081dms
V091dms
JB 3241—91
5-4—2
JB3241—91
Gtxoom
(tisf)
J0t9 ds
SsetdS
ccc
JB3241—91
dot9 dms
d009dms
os dms
092 dMS
A081dms
091dMs
JB 3241—91
8 202'
09X001
（6）
JB3241
16 512:
Hatgdms
H009dms
JB3241—91
JB3241-91
009［
Connection method and size of universal coupling
JB 3241—91
Universal coupling uses high-strength bolts and self-locking nuts to connect the flanges at both ends to other mechanical components. Its torque is transmitted through the flange end face key and the friction between the flanges. The relevant connection dimensions and bolt pre-tightening torque are specified in Figure 8 and Table 10. Bolts can only be put in from the flange side that matches the coupling, and nuts are tightened from the flange side of the universal coupling. The mechanical properties of the bolts should comply with the 10.9 grade in GB3098.1, and the mechanical properties of the nuts should comply with the 10 grade in GB3098.4. E
Swing diameter
SwP160 L
SWP180
SWP 200
SWP225
SWP250
SWP 285
SWP315
SWP350
SWP390
SWP435
SWP480
SWP 550
SwP 600
SWP 640
Number of bolts
Universal coupling method
Bolt specifications
M12×1.5×50
MJ4X1.5X50
M14X1.5×55
M16X1.5×65
M18X1.5X75
M20×1.5×85
M22X×1.5×95
M22×1.5×100
M24X2×110
M27X2X120
M30X2×130
M30X2X140
M33X2×150
M36X3×165
Preload torque
Note: Indicates any one of A, B, C, D, E, F, G. Technical requirements
General requirements
62 Yuan
Universal couplings shall comply with the requirements of this standard and be manufactured according to drawings and technical documents approved by the prescribed procedures. General technical conditions shall comply with the relevant provisions of JB/ZQ4000. 4.1.2
4.2 Cross shaft
The material of the cross shaft is alloy structural steel, and its mechanical properties are: 4.2.1
oh≥1150N/mm2;
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