6320/C3vl0241 Insulated Insocoat Ceramic-Coated Bearings

Product Details

Product Description

Product Description

Name	Current-Insulating Bearings
Brand	MONTON
Model	6320/C3VL0241
d	100mm
D	215mm
D	47mm
Ring Material	Gcr15/Special materail
Cage Material	Brass cage
Load rating dynamic	174KN
Load rating static	140KN
Fatigue Limit Load Pu[kN]	4.75
Reference speed [r/min]	6700
Limiting speed [r/min]	4300
Sealed	as customer requested
Weight	7KG
Design Structure	Ball
Precision	P5/P6 or as customer requested
Vibration	ZV1, ZV2, ZV3, or as customer requested
Clearance	C0, C2, C3, or as customer requested
Quality standard	ISO9001: 2000/SGS
Package	single box
Original	Luoyang
Service	OEM
Delivery date	Accordingly
Application	Threephase motor,Traction motor,Wind power generator

Insulated Insocoat bearings
Electric motors, generators and associated equipment are at risk when an electric current passes through their bearings. This can damage the contact surfaces of rolling elements and raceways in the bearings (electrical erosion) and rapidly degrade the grease. An additional risk in electric motors and generators comes from high frequency currents caused by the inherent stray capacitance.
The risk of damage increases where the application uses a frequency converter.
Insulated Insocoat bearings are designed to prevent electric current from passing through the bearing have the external surfaces of either their inner or outer ring coated with an insulating aluminium oxide layer, by applying a sophisticated plasma-spray process for an outstanding quality finish are a very cost-effective solution compared with other insulation methods.
Electrical pitting often occurs in the use of rolling bearings in high power electromotor, wind turbine generator and rail vehicles motor systems and cause sparks that damage the rolling contact surface, ultimately lead to bearing failure.
Electric insulated bearings therefore have been created and take the place of non-insulated bearings. we applies advanced surface modification process overlay a ceramic coating on the bearing ring, to insulate the electrical current flow into bearing substrate, so the electrical pitting is prevented and bearing's service life is extended.
It is significantly more cost-effective to provide for the use of electrically insulated bearings at the planning stage. As a result, customer benefit is increased through reduced maintenance costs and higher machine availability.
Bearing features
Protection against electrical erosion
With insulating properties integrated into the bearing, INSOCOAT bearings can improve reliability and increase machine uptime by virtually eliminating the problem of electrical erosion.
High electrical resistance
The aluminium oxide coating provides a minimum electrical resistance of 200 Ω and can withstand voltages up to 3 000 V DC.
Consistent electrical performance
Application of Insulated Bearings in Electric motors
1. Causes and harm of motor shaft voltage and bearing current formation
In the operation of the motor, any imbalance in the phase currents in or around the rotor's magnetic circuit can produce a rotating system flux linkage.
When the shaft rotates, these flux chains can generate a potential difference across the shaft. This potential difference is called the shaft voltage. The shaft voltage can excite a circulating current through a loop formed by the two ends of the bearing in the shaft and the casing (closed circuit), which is called the shaft current.
In addition, the rotor core has more remanence, For a wound rotor motor, shaft voltage and shaft current are generated if two or more windings are short-circuited to the rotor core or the shaft. the bearing current is related to the structure of the motor, the power of the motor, the magnitude of the drive voltage, the rise time of the pulse, the length of the cable, etc.
2. How to block shaft current - use electrically insulated bearings
In order to avoid damage to the bearing caused by the shaft current, effective measures should be taken to isolate the shaft current. For large motors with independent bearing housings at both ends, spacers made of insulating material can be placed between the bearing housing and the metal base. For a motor in which an ordinary bearing and a casing are integrated, an Electrically insulated bearing is generally used at one end thereof (often arranged at the non-spindle end).
For high requirements, insulated bearings are installed at both ends. The insulating bearing used is generally a method of attaching (generally coating) an insulating layer to the outer ring. In some cases, the inner and outer rings are also provided with an insulating layer.
Electrically insulated bearings avoid damage caused by electrical corrosion, so they are more reliable in operation than in conventional bearings. And compared to other insulation methods, such as shaft or housing insulation, etc. More cost effective and reliable.
CoatMaster (China Bearing manufacturer), As the exprienced Electrically Insulated Bearing manufacturer of China, Not only produce insulated deep groove ball bearing, insulated cylindrical roller bearing, insulated tapered roller bearing, insulated angular contact ball bearing and the other type of insulated bearing, but also supply complete and expert solution for electric motor and the other applications where need insulated bearing. if you have problem make you distracted about the insulated bearing, just contact with our bearing technical team.

Designation	Principal dimensions			Basic load ratings		Fatique load limit	Speed ratings		Mass
				dynamic	static		Reference speed	Limiting speed
	d	D	B	C	C0	Pu
	mm	mm	mm	kN	kN	kN	r/min		kg
NU1010ECP/C3VL0241	50	80	16	47,3	57	7,2	9 500	9 500	0,27
NU210ECM/C3VL0241	50	90	20	66	72	9,15	7 500	9 000	0,48
NU310ECM/C3VL0241	50	110	27	112	116	15,3	6 000	8 000	1,35
NU1011ECP/C3VL0241	55	90	18	57,2	69,5	9	8 500	13 000	0,4
NU1011ECML/C3VL0241	55	90	18	57,2	69,5	9	8 500	13 000	0,45
NU211ECM/C3VL0241	55	100	21	85,8	100	12,9	7 000	8 000	0,78
NU311ECM/C3VL0241	55	120	29	138	146	19	5 600	7 000	1,75
NU1012ML/C3VL0241	60	95	18	38	45,5	5,85	8 000	13 000	0,48
NU1012ECP/C3VL0241	60	95	18	58,3	73,5	8,8	8 000	8 000	0,48
NU212ECM/C3VL0241	60	110	22	96,8	106	14	6 300	7 500	0,97
NU312ECM/C3VL0241	60	130	31	151	160	20,4	5 000	6 700	2,15
NU1013ECP/C3VL0241	65	100	18	62,7	81,5	10,6	7 500	7 500	0,45
NU213ECM/C3VL0241	65	120	23	110	122	16	5 600	6 700	1,25
NU313ECM/C3VL0241	65	140	33	183	196	25,5	4 800	6 000	2,65
NU1014ECM/C3VL0241	70	110	20	70,4	85	10,8	7 000	7 000	0,69
NU1014ECP/C3VL0241	70	110	20	76,5	93	12	7 000	7 000	0,62
NU214ECM/C3VL0241	70	125	24	121	140	18,6	5 300	6 300	1,35
NU314ECM/C3VL0241	70	150	35	209	228	29	4 300	5 600	3,1
NU1015M/C3VL0241	75	115	20	58,3	71	9,3	6 700	6 700	0,75
NU215ECM/C3VL0241	75	130	25	132	160	21,2	5 300	6 000	1,5
NU315ECM/C3VL0241	75	160	37	242	270	34	4 000	5 300	3,9
NU315ECP/VL0241	75	160	37	242	270	34	4 000	5 300	3,9
NU1016ECM/C3VL0241	80	125	22	99	127	16,3	6 000	6 000	1,05
NU216ECM/C3VL0241	80	140	26	142	173	22	4 800	5 600	1,85
NU316ECM/C3VL0241	80	170	39	264	290	36	3 800	5 000	4,6
NU1017M/C3VL0241	85	130	22	72,1	91,5	11,6	6 000	6 000	1,1
NU217ECM/C3VL0241	85	150	28	168	200	25,5	4 500	5 300	2,25
NU317ECM/C3VL0241	85	180	41	297	340	41,5	3 600	4 800	5,3
NU1018M/C3VL0241	90	140	24	85,8	110	13,7	5 600	5 600	1,35
NU218ECM/C3VL0241	90	160	30	187	224	28	4 300	5 000	2,75
NU318ECM/C3VL0241	90	190	43	319	360	44	3 400	4 500	6,25
NU1019ML/C3VL0241	95	145	24	88	116	14,3	5 300	5 300	1,4
NU219ECM/C3VL0241	95	170	32	224	270	33,5	4 000	4 800	2,85
NU319ECM/C3VL0241	95	200	45	341	390	46,5	3 200	4 300	7,25
NU1020M/C3VL0241	100	150	24	89,7	122	15	5 000	5 000	1,45
NU220ECM/C3VL0241	100	180	34	251	310	38	3 800	4 500	4
NU320ECM/C3VL0241	100	215	47	391	440	51	3 000	3 800	8,65
NU1022M/C3VL0241	110	170	28	130	173	20,8	4 500	4 500	2,3
NU222ECM/C3VL0241	110	200	38	297	375	44	3 400	4 000	5,6
NU322ECM/C3VL0241	110	240	50	468	540	61	2 600	3 400	12
NU1024M/C3VL2071	120	180	28	138	190	22,4	4 000	4 000	2,55
NU224ECM/C3VL0241	120	215	40	341	440	50	3 000	3 600	6,65
NU324ECM/C3VL0241	120	260	55	539	620	69,5	2 400	3 200	15
NU1026M/C3VL2071	130	200	33	168	232	27	3 800	5 600	3,85
NU226ECM/C3VL2071	130	230	40	369	465	52	2 800	3 400	7,6
NU326ECM/C3VL2071	130	280	58	627	750	81,5	2 200	3 000	18,5
NU1028M/C3VL2071	140	210	33	179	255	29	3 600	3 600	4,05
NU228ECM/C3VL2071	140	250	42	396	520	58,5	2 600	3 200	9
NU328ECM/C3VL2071	140	300	62	682	830	88	2 200	2 800	25
NU1030M/C3VL2071	150	225	35	194	275	18	3 200	3 200	4,9
NU230ECM/C3VL2071	150	270	45	457	610	65,5	2 400	2 800	12
NU330ECM/C3VL2071	150	320	65	765	950	100	2 000	2 600	31

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