Audited Supplier
insulated bearings
Single Row
P0 P6 P5 P4 P2
Support
Steel Cage
Long Life; Durable
Wooden Pallet
Customized
Shan Dong
84821090
Product Description
| Name | Insulating Bearings |
| Model | 558320C.J20A |
| d | 100mm |
| D | mm |
| D | mm |
| Ring Material | Gcr15/Special materail |
| Cage Material | Brass cage |
| Load rating dynamic | KN |
| Load rating static | KN |
| Fatigue Limit Load Pu[kN] | |
| Reference speed [r/min] | |
| Limiting speed [r/min] | |
| Sealed | as customer requested |
| Weight | 9.25KG |
| Design Structure | Roller |
| 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 |
| Service | OEM |
| Delivery date | Accordingly |
| Application | Threephase motor,Traction motor,Wind power generator |
Insulated 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.
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.
SAT series are the electrically insolated bearing products developed and marketed by us The insulation has a guaranteed breakdown resistance of at least 1000V AC or DC. We can also develop tailored modes for customer on types and precision levels, as well as higher electrical insulation.
Insulated bearings are with insulation properties.
Insulated bearings usually use insulation coatings applied to the inner or outer surface of the bearing toachieve insulation function.This insulation coating can effectively prevent current from passing through thebearing and prevent the occurrence of electrical corrosion.
Product Advantage
Preventing electrocorrosion:During the operation of the motor,shaftvoltage and shaft current maybegenerated.When the curent passes through the bearing,it will cause damage such as electrocorrosion pitsand melting marks on the surface of the bearing raceway and rolling elements,affecting the service life of thebearing.Insulated bearings can prevent damage caused by electrical corrosion and ensure more reliableoperation of motors and other equipment.
Reliability and cost-effectiveness:Compared with other insulation methods such as insulation treatment ofshafts or shells,insulated bearings have more stable insulation perfomance,easier installation andmaintenance,and are more cost-effective
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. The larger the power of the motor, the higher the driving voltage, the steeper the rising edge of the driving voltage, and the shorter the cable, the larger the bearing current.
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. Insulated bearings have the same dimensions and basic technical features as non-insulated bearings Suitable for motors, generators, especially variable frequency motors.
| 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 |
1.What is the minimum order quantity for this product?
Can be negotiated, we will try our best to meet customer needs.Our company is mainly based on wholesale sales, most customers'orders are more than Over 200 sets.
2.What is your latest delivery time?
Most orders will be shipped within 3-5 days of payment being received.
3.Does your company have quality assurance?
Yes, for 1 years.
4.Are you a factory or a trading company?
We have our own cooperative factory, and our business type is a combination of manufacturing and trading.
5.What is the competitiveness of your company's products compared to other companies?
High precision, high speed, low noise.
6.What are the advantages of your company's services compared to other companies?
Answer questions online 24 hours a day, reply in a timely manner, 100% after-sales service.
7.Which payment method does your company support?
Do our best to meet customer needs, Can be negotiated.
8.How to contact us quickly?
Please send us an inquiry or message and leave your other contact information, we will contact you as soon as possible and provide the detailed information you need.
