Product Description

NHF Hydraulic Safety Coupling With Flange

Description of   NHF Hydraulic Safety Coupling With Flange
1.Simple and convenient assembly and disassembly;
2.No keyway and thrust ring are required on the shaft;
3.The stress on the entire contact surface is relatively uniform, and the stress concentration is not obvious;
4.When the vibration load of the shaft system changes, the shaft will not be worn;
5.The position of the coupling on the shaft is easy to ensure, and the connection accuracy is high;
6.Can be used repeatedly, with high interchangeability.

Dimensions of  NHF Hydraulic Safety Coupling With Flange

	d	D	L	L1	Df	Dc	R	t	n	ds	Mt	Mass
	mm	mm	mm	mm	mm	mm	mm	mm		mm	kNm	kg
NHF100	100	170	215	40	265	230	9	21	8	19	26	26
NHF110	110	186	235	45	295	255	10	23	8	21	35	34
NHF120	120	202	250	50	315	275	11	25	8	23	46	42
NHF130	130	218	270	55	340	295	11	27	8	25	58	52
NHF140	140	234	290	60	355	310	12	29	10	24	72	64
NHF150	150	250	300	60	380	335	13	31	10	26	89	75
NHF160	160	266	320	65	405	355	14	33	10	28	108	91
NHF170	170	282	340	70	430	375	15	35	10	30	130	108
NHF180	180	298	355	75	440	390	15	37	12	29	154	124
NHF190	190	314	375	80	465	410	16	39	12	30	181	145
NHF200	200	330	390	80	490	435	17	41	12	32	211	167
NHF210	210	346	410	85	515	455	18	43	12	33	244	193
NHF220	220	362	425	90	535	475	19	45	12	35	281	219
NHF230	230	378	445	95	560	495	19	47	12	37	321	249
NHF240	240	394	465	100	580	515	20	49	12	38	365	282
NHF250	250	410	475	100	605	535	21	51	12	40	412	313
NHF260	260	426	495	105	630	560	22	53	12	42	464	352
NHF270	270	442	515	110	655	580	23	55	12	43	519	394
NHF280	280	458	530	115	675	600	23	57	12	45	579	434
NHF290	290	474	550	120	700	620	24	59	12	46	644	483
NHF300	300	490	565	120	720	640	25	61	12	48	713	528
NHF310	310	506	580	125	750	665	26	63	12	50	786	582
NHF320	320	522	600	130	770	685	27	65	12	51	865	638
NHF330	330	538	620	135	795	705	27	67	12	53	948	700
NHF340	340	554	635	140	815	725	28	69	12	54	1037	759
NHF350	350	570	650	140	840	745	29	71	12	56	1131	823
NHF360	360	586	670	145	835	750	30	73	16	50	1231	878

	d	D	L	L1	Df	Dc	R	t	n	ds	Mt	Mass
	mm	mm	mm	mm	mm	mm	mm	mm		mm	kNm	kg
NHF370	370	602	690	150	855	770	31	75	16	51	1337	951
NHF380	380	618	705	155	880	790	31	77	16	53	1448	1026
NHF390	390	634	725	160	900	810	32	79	16	54	1565	1108
NHF400	400	650	740	160	930	835	33	81	16	56	1689	1194
NHF410	410	666	755	165	950	855	34	83	16	57	1819	1277
NHF420	420	682	775	170	975	875	35	85	16	58	1955	1376
NHF430	430	698	795	175	995	895	35	87	16	60	2098	1474
NHF440	440	714	810	180	1571	915	36	89	16	61	2248	1574
NHF450	450	730	825	180	1040	935	37	91	16	63	2405	1674
NHF460	460	746	845	185	1060	955	38	93	16	64	2569	1787
NHF470	470	762	860	190	1085	975	39	95	16	65	2740	1900
NHF480	480	778	880	195	1105	995	39	97	16	67	2918	2571
NHF490	490	794	900	200	1130	1015	40	99	16	68	3105	2156
NHF500	500	810	910	200	1150	1035	41	101	16	70	3299	2267
NHF510	510	826	930	205	1175	1055	42	103	16	71	3501	2411
NHF520	520	842	950	210	1195	1075	43	105	16	72	3711	2554
NHF530	530	858	965	215	1220	1095	43	107	16	74	3929	2698
NHF540	540	874	985	220	1240	1115	44	109	16	75	4155	2852
NHF550	550	890	1000	220	1270	1140	45	111	16	77	4391	3014
NHF560	560	906	1571	225	1290	1160	46	113	16	78	4634	3180
NHF570	570	922	1035	230	1310	1180	47	115	16	79	4887	3338
NHF580	580	938	1055	235	1335	1200	47	117	16	81	5149	3524
NHF590	590	954	1075	240	1355	1220	48	119	16	82	5420	3708
NHF600	600	970	1085	240	1380	1240	49	121	16	84	5700	3877
NHF610	610	986	1105	245	1400	1260	50	123	16	85	5990	4072
NHF620	620	1002	1125	250	1425	1280	51	125	16	86	6289	4284
NHF630	630	1018	1140	255	1445	1300	51	127	16	88	6599	4477
NHF640	640	1034	1160	260	1465	1320	52	129	16	89	6918	4692
NHF650	650	1050	1175	260	1495	1345	53	131	16	91	7247	4917
NHF660	660	1066	1190	265	1515	1365	54	133	16	92	7587	5128
NHF670	670	1082	1210	270	1540	1385	55	135	16	93	7937	5375
NHF680	680	1098	1230	275	1560	1405	55	137	16	95	8298	5618
NHF690	690	1114	1245	280	1585	1425	56	139	16	96	8669	5860
NHF700	700	1130	1260	280	1605	1445	57	141	16	98	9052	6097

 

 

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Impact of Flange Coupling on the Overall Reliability of Connected Equipment

A flange coupling plays a crucial role in ensuring the overall reliability and performance of connected equipment in a mechanical system. Its impact can be summarized as follows:

• 1. Power Transmission Efficiency: Flange couplings provide a secure and rigid connection between shafts, enabling efficient power transmission from one component to another. By minimizing energy losses through slippage or vibration, flange couplings help maintain the overall efficiency of the system.
• 2. Reducing Wear and Tear: Flange couplings accommodate misalignment and slight axial movement, reducing stress on connected equipment. By absorbing shocks and vibrations, they protect the components from excessive wear and fatigue, increasing their lifespan.
• 3. Controlling Vibration and Noise: A properly selected and installed flange coupling helps dampen vibrations and reduces noise levels in the system. This is particularly important in precision machinery, where vibrations can affect the accuracy and performance of the equipment.
• 4. Handling Misalignment: Flange couplings can compensate for angular, parallel, and axial misalignment between shafts. This capability ensures smooth operation and prevents excessive forces that could lead to premature failure of equipment components.
• 5. Improving System Flexibility: Flange couplings offer flexibility in design and installation. They allow for quick and easy disconnection and reconnection of equipment for maintenance or repairs, minimizing downtime and increasing the system’s overall availability.
• 6. Protection Against Overloads: In high-torque applications, flange couplings provide a safeguard against overloads by slipping or disengaging when the torque exceeds the coupling’s capacity. This helps prevent damage to the equipment and ensures the safety of the system and operators.
• 7. Corrosion Resistance: Depending on the material selected, flange couplings can offer excellent corrosion resistance, making them suitable for use in harsh environments or corrosive conditions. This protects the connected equipment from premature deterioration.
• 8. Maintenance and Downtime Reduction: The reliability of flange couplings leads to reduced maintenance needs and less frequent downtime. A well-maintained coupling can significantly extend the life of connected equipment and reduce the frequency of replacements or repairs.
• 9. Enhancing System Safety: Flange couplings provide a secure connection that ensures the safe operation of rotating machinery. They minimize the risk of unexpected equipment failure or disconnection, promoting the safety of operators and surrounding personnel.
• 10. Adaptability to Different Industries: Flange couplings are widely used across various industries, from manufacturing and power generation to mining and aerospace. Their versatility and reliability make them suitable for a wide range of applications, contributing to the overall success and efficiency of these industries.

In conclusion, the proper selection and use of flange couplings significantly impact the overall reliability and performance of connected equipment. Their ability to transmit power efficiently, handle misalignment, and protect against wear and overloads ensures smooth and safe operation, reducing maintenance costs, and increasing the lifespan of machinery.

Can Flange Couplings Be Used in Food Processing and Pharmaceutical Industries?

Yes, flange couplings can be used in food processing and pharmaceutical industries, provided they meet certain requirements and standards to ensure hygiene and product safety. These industries have stringent regulations and guidelines to prevent contamination and maintain the quality and purity of their products. When selecting flange couplings for such applications, several considerations must be taken into account:

• Material Selection: The flange coupling material must be food-grade or pharmaceutical-grade and comply with industry-specific regulations. Stainless steel, particularly austenitic grades like 316L, is commonly used due to its excellent corrosion resistance and ease of cleaning.
• Hygienic Design: Flange couplings for these industries should have a hygienic design that minimizes crevices, dead spaces, and surface roughness where bacteria or contaminants could accumulate. Smooth surfaces and seamless construction help facilitate thorough cleaning and sterilization.
• Sealing and Lubrication: Proper sealing is essential to prevent any potential leaks or ingress of contaminants. Food-grade or pharmaceutical-grade lubricants should be used to ensure that there is no risk of contamination from the coupling’s lubrication.
• Certifications and Compliance: Flange couplings intended for use in food processing and pharmaceutical industries should have relevant certifications, such as FDA (U.S. Food and Drug Administration) approval, EU regulations (e.g., EC No. 1935/2004), and compliance with industry standards like 3-A Sanitary Standards.
• Cleanability: Flange couplings should be designed for easy disassembly and cleaning to maintain the required hygiene standards. This may involve quick-release or tool-less designs that allow for frequent inspection and cleaning without impeding production processes.
• Resistant to Corrosive Cleaning Agents: In food processing and pharmaceutical industries, aggressive cleaning agents may be used. The flange coupling material should be resistant to these substances to avoid degradation and maintain the coupling’s integrity over time.

By meeting these criteria, flange couplings can be safely used in food processing and pharmaceutical applications without compromising product quality or safety. It is crucial to work with reputable manufacturers or suppliers who understand the specific requirements of these industries and can provide couplings that adhere to the necessary standards.

Can Flange Couplings Accommodate High Torque and High-Speed Applications?

Yes, flange couplings are designed to accommodate both high torque and high-speed applications. They are capable of transmitting significant amounts of torque between shafts while maintaining stable and efficient power transmission. The ability to handle high torque and high-speed applications depends on various factors, including the design, material, and size of the flange coupling.

1. Design: Flange couplings are available in different designs, such as rigid flange couplings and flexible flange couplings. Rigid flange couplings are more suitable for applications that require precise shaft alignment and minimal misalignment. On the other hand, flexible flange couplings can accommodate slight misalignments and are suitable for applications where shock or vibration may occur. The design of the coupling is crucial in determining its torque and speed capabilities.

2. Material: Flange couplings are manufactured from various materials, including steel, stainless steel, aluminum, and other alloys. The material selection is essential in determining the coupling’s strength, durability, and resistance to wear and fatigue. High-quality materials are used in flange couplings for high torque and high-speed applications to ensure their reliability and performance.

3. Size and Dimensions: The size and dimensions of the flange coupling play a significant role in determining its torque and speed ratings. Larger flange couplings with increased diameter and thickness can handle higher torque and speed compared to smaller couplings. It is essential to choose the appropriate size of the coupling based on the application’s torque and speed requirements.

4. Surface Finish: The surface finish of the flange coupling is critical, especially in high-speed applications. A smooth surface finish reduces friction and wear between the mating surfaces of the flanges, bolts, and nuts, thereby improving the overall efficiency of the coupling.

5. Lubrication: Proper lubrication is essential for flange couplings in high-speed and high-torque applications. Lubricants help reduce friction and wear, dissipate heat, and prevent premature failure of the coupling components.

6. Manufacturer’s Recommendations: It is crucial to follow the manufacturer’s recommendations and guidelines regarding the maximum torque and speed ratings of the flange coupling. Exceeding the recommended limits can lead to coupling failure and potential damage to the connected equipment.

In conclusion, flange couplings can be effectively used in high torque and high-speed applications when selected and maintained properly. Choosing the right design, material, size, and adhering to the manufacturer’s guidelines ensures that the flange coupling can handle the required torque and rotational speed efficiently and reliably.

editor by CX 2024-03-30