This standard specifies the classification, technical requirements, inspection rules, marking, packaging and storage of steel ball type energy-saving safety couplings. The couplings specified in this standard are suitable for medium and high-speed transmission bearing systems that connect two axis lines with load starting, require safety protection, and do not require speed regulation. They have the performance of no-load starting and ground load protection. The torque can be adjusted by changing the filling amount of steel sand, and they have certain characteristics such as compensation for the relative offset of the two connected and vibration reduction. The working environment temperature is -20~90℃, the transmission power is 0.3~5550kW, and the speed is 600~3000r/min. JB/T 5987-1992 Steel Ball Energy-saving Safety Coupling JB/T5987-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 5987-1992
Steel Ball Energy Saving Safety Coupling
Published on July 17, 1992
Implementation by the Ministry of Machinery and Electronics Industry of the People's Republic of China on July 1, 1993
Subject content and scope of application
Cited standards
Technical requirements
Inspection rules
Marking, packaging, storage
Instructions for selection of couplings (reference)
Mechanical Industry Standard of the People's Republic of China
Steel Ball Energy Saving Safety Coupling
Subject content and scope of application
JB/T 5987-1992
This standard specifies the classification, technical requirements, inspection rules, marking, packaging and storage of steel ball energy saving safety couplings (hereinafter referred to as couplings).
The coupling specified in this standard is suitable for connecting two coaxial shafts with load start or frequent start, requiring safety protection, and medium and high-speed transmission shaft systems without speed regulation. It has the performance of converting heavy-load start into no-load start, adjustable transmission torque and easy overload protection. It has certain characteristics of compensating for the relative offset of the two connected shafts and vibration reduction. The working temperature is -20~+90℃, the transmission power is 0.3~5550kW; the speed is 600~3000r/min.
Reference standard
GB 276
GB3078
GB3507
GB3852
GB3931
GB4323
GB4879
GB4892
GB6388
GB6543
GB9439
GB10412
GB10413
GB11352
GB12458
3 Classification
Standard elastic washers
Packaging, storage and transportation pictorial symbols
Rolling bearings
Deep groove ball bearings
Overall dimensions
Technical conditions for high-quality structural steel cold-drawn steel materials
Mechanical properties of fasteners Nominal torque series of bolts, screws and studs for mechanical couplings
Types and dimensions of coupling shaft holes and keyways
Terminology of mechanical couplings
Elastic sleeve pin couplings
Rust-proof packaging
Hard rectangular transport packaging dimension series
Transport packaging delivery and receipt marks
Corrugated paper boxes
Gray cast iron parts
Ordinary V-belt pulleys
Narrow V-belt pulleys
Casting carbon steel parts for general engineering
Classification of mechanical couplings
Model representation method
The coupling model should comply with the following provisions
Approved by the Ministry of Machinery and Electronics Industry on July 17, 1992 and implemented on July 1, 1993
Example of coupling model:
JB/T 5987-1992
Specification code (see Table 1)
Basic type is not indicated
Type code Braking wheel type is indicated by Z
(Pulley type is indicated by D
Steel ball energy-saving safety coupling
Example 1: The basic type steel ball energy-saving safety coupling with a speed (referring to the synchronous speed of the AC motor) of 1500r/min and a transmission power of 20kW is model: AQ6:
Example 2: The type of the steel ball energy-saving safety coupling with a brake wheel with a speed of 3000r/min and a transmission power of 96kW is: AQZ5; Example 3: The speed of 1000r/ min, the model of the pulley type steel ball energy-saving safety coupling with a transmission power of 50kW is: AQD10. 3.1.2 Drum elastic sleeve
Should comply with the provisions of GB4323.
Drum elastic sleeve model example:
Example: The drum elastic sleeve model of AQ8 energy-saving safety steel ball coupling is: T5. 3.2 Marking
The coupling marking shall comply with the provisions of GB12458. Example 1: AQ6 steel ball energy-saving safety coupling driving end: J-type shaft hole, C-type keyway: d=60mm, L=112mm: driven end: J-type shaft hole, A-type keyway; d=60mm, L=107mm. AQ6 coupling
JC60×112
J,60×107
JB/T5987
Example 2: AQZ5 with brake wheel type steel ball energy-saving safety coupling driving end: Y-type shaft hole, A-type keyway: d=55mm, L=112mm; driven end: J-type shaft hole, A-type keyway; d=55mm, L=84mm. AQZ5 coupling
55×112
J,55×84
JB/T5987
Example 3: AQD8 pulley type steel ball energy-saving safety coupling AQD pulley type steel ball energy-saving safety coupling has no driven end, only the driving end can be marked, such as: Y-type shaft hole, A-type keyway; d=75mm, L=142mm.
AQD8 coupling
75×142
JB/T5987
3.3 Structural type, basic parameters and main dimensions 3.3.1 The structural type, basic parameters and main dimensions of AQ basic steel ball energy-saving safety coupling shall comply with the requirements of Figure 1 and Table 1. Model
JB/T5987-1992
920121315
Figure 1AQ basic steel ball energy-saving safety coupling 1, 2-bolt; 3, 12-bearing cover; 4, 5, 13-spring pad; 6-end cover; 7-housing: 8-rotor: 9-countersunk screw plug: 10-sealing ring: 11-rolling bearing: 14-elastic sleeve: 15-elastic pin: 16-positioning screw: 17 half coupling: 18-steel ball Table 1AQ steel ball energy-saving safety Basic parameters and main dimensions of couplings Power that can be transmitted at various speeds
Driving end
Shaft hole length
Driven end
Shaft hole length
J, Z type
Permissible speed
Power that can be transmitted at various speeds
JB/T5987-1992
Continued Table 1
Driving end
Shaft hole length
Driven end
Shaft hole length
JZ, type
Permissible speed
Cast iron and other steel
Power that can be transmitted at various speedsbZxz.net
JB/T5987-1992
Continued Table 1
Driving end
Shaft hole length
Driven end
Shaft hole length
JZ, type
Permissible speed
Cast iron and other steel
Power that can be transmitted at various speeds
Note: For items with * in the table, please refer to The material of the shaft is forged steel JB/T5987-1992
Continued Table 1
Driving end
Shaft hole length
Driven end
Shaft hole length
JZ, type
Permissible speed
Cast iron and cast steel
JB/T5987-1992
3.3.2AOZ-type steel ball energy-saving safety coupling with brake wheel The structural type, basic parameters and main dimensions shall comply with the requirements of Figure 2 and Table 2. 123456
101312131415161719志
Figure 2AQZ steel ball type energy-saving safety coupling with brake wheel 1, 2-bolt: 3, 12-bearing cover: 4, 5, 13-spring washer: 6-end cover: 7-housing: 8-rotor: 9 countersunk screw plug; 10-sealing ring: 11-rolling bearing: 14-elastic sleeve: 15-elastic column pin: 16-positioning screw: 17-half coupling: 18-steel ball: 19-brake wheel Table 2AQZ steel ball type with brake wheel Basic parameters and main dimensions of energy-saving safety couplings Power that can be transmitted at various speeds
Driving end
Shaft hole length
Driven end
Shaft hole length
Permissible speed
Cast iron and cast steel
Power that can be transmitted at various speeds
JB/T5987-1992
Continued Table 2
Driven end
Shaft hole length
Shaft hole length
J,Z type
Permissible speed
Cast iron and cast steel
Power that can be transmitted at various speeds
JB/T5987-1992
Continued Table 2
Driven end
Driving end
Shaft hole length
Shaft hole length
J,,Z, type
Permissible speed
Cast iron and cast steel
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