Plum Blossom Coupling

Nominal torque：710-100000

Permissible speed：3780-660

Moment of Inertia：0.03-21.25

Weight：7.8-540

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Overview

Features

Parameter

Application

Overview

The plum blossom coupling (also known as the elastic plum blossom coupling) is a commonly used elastic coupling, mainly composed of two metal sleeves and an elastic plum blossom pad in the middle. Its structure is simple and compact, and it uses the deformation of the plum blossom-shaped elastomer to compensate for axial, radial and angular deviations, while absorbing vibration and impact. It is suitable for the transmission system of small and medium-sized cranes.

The plum blossom coupling is often used in crane walking mechanisms, motor and reducer connections, and other scenarios. When selecting, it is necessary to match the torque, speed and shaft diameter, and consider the working environment (such as temperature and corrosiveness). Daily maintenance requires regular inspection of the wear of the plum blossom pad and timely replacement of aging or damaged elastomers to ensure the stability and safety of the transmission system.

Features

The plum blossom coupling (also known as the plum blossom-shaped elastic coupling) is a common elastic coupling. It is widely used in various mechanical transmission systems due to its simple structure and reliable performance. The following are its main performance characteristics:

Elastic buffering and vibration reduction

Absorb vibration and impact: The plum blossom-shaped elastomer (such as polyurethane, rubber, etc.) in the middle absorbs vibration, impact and radial deviation in the transmission to reduce the impact load on the equipment. Reducing noise: The elastic element can effectively reduce the noise in the transmission process and is suitable for occasions with high requirements for quietness.

Compensation for deviation capability

Radial/angular deviation compensation: It can compensate for the radial deviation (≤0.5mm), angular deviation (≤1°) and a small amount of axial deviation between the two shafts, and adapt to the centering error during installation. Floating connection: It is suitable for slight displacement of the shaft system caused by thermal expansion or foundation settlement.

Simple and compact structure

No lubrication requirement: No maintenance and lubrication are required, reducing the cost of use. Small size and light weight: Suitable for installation environments with limited space.

High torque transmission efficiency

Wide torque range: can transmit small and medium torque (usually suitable for tens of Nm to thousands of Nm), and some reinforced designs can withstand higher loads. Adjustable torsional stiffness: adapt to different working conditions by selecting elastomers of different hardness (such as red/blue polyurethane).

Electrical insulation and corrosion resistance

Insulation performance: elastomers can isolate the current between the two shafts to prevent electrical corrosion. Oil and aging resistance: high-quality elastomer materials can work in an environment of -40℃~+100℃, and are resistant to oil, acid and alkali corrosion.

Easy installation

Keyless design: some models can be fixed by clamping or screwing, without keyways, simplifying the installation process. Split structure: some models support split installation, which is convenient for disassembly and maintenance.

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Parameter

model	Nominal torque Tn	Permissible speed [n]	Shaft hole diameter	Shaft hole length L				D	C	A	B	Moment of Inertia	weight
	(N.m)	(rpm)	d1、dz	AND			WITH					kg.m ²	Kg
				Y1	Y2
CLQ1	710	3780	20、22、24	50	60		/	170	2.5	49	111	0.03	7.8
			25、28		/
			30、32、35、	55	80		/
			38	80	110		/
CLQ2	1400	3000	30、32、35	55	80		60	185	2.5	75	145	0.05	12.5
			38	80	110		82
			40、42、45、48
CLQ3	3150	2400	40、42、45、48	82	110		82	220	2.5	95	171	0.13	26.9
			50、55、56
			60、63、65	105	140		105
			70	/	/
CLQ4	5600	2000	45、48	82	110		82	250	5	125	219	0.21	34.9
			50、55、56
			60、63、65	105	140		105
			70、71、75
			80	/	/
CLQ5	8000	1680	55、56	82	110		82	290	5	145	241	0.45	55.8
			60、63、65	105	140		105
			70、71、75
			80、85、90	130	170		130
			95	/	/
CLQ6	11800	1500	60、63、65	105	140		105	320	5	160	263	0.7	79.9
			70、71、75
			80、85、90、95	130	170		130
			100	/	/		165
CLQ7	18000	1270	65、70、71、75	105	140		105	350	5	185	293	1.15	109.5
			80、85、90、95	130	170		130
			100、110、120、	165	210		165
			130	/	/		200
CLQ8	23600	1140	80、85、90、95	130	170		130	380	5	205	315	2.38	138.8
			100、110、120、125	165	210		165
			130、140	200	250		200
CLQ9	28000	1000	90、95	130	170		130	430	5	220	280	3.55	171
			100、110、120、125	165	200		165
			130、140、150	250			200
			160	300			/
CLQ10	50000	850	110、120、125	165		210	165	490	5	246	310	7	275.8
			130、140、150	250			200
			160、170、180	300			/
CLQ11	71000	750	120、125	210			165	545	5	280	350	13.75	385
			130、140、150	250			200
			160、170、180	300			/
			190、200、220	350			/
CLQ12	100000	660	140、150	250			/	590	5	320	404	21.25	540
			160、170、180	300			/
			190、200、220	350			/
			240、250	410			/

Application

The Crane Hook Blocks are usually used in conjunction with overhead cranes, gantry cranes, jib cranes and electric hoists, and are widely used in the following scenarios: