High Precision Insulated Bearing 6314/MC3VL0241 is Deep Groove Ball Bearing design. its dimension is 70×150×35mm, it has the same dimension and the same design with normal chrome steel 6314M bearing. but the most different is 6314-M-J20AA bearing with Aluminium Oxide Coating. the coating can Electrical Resistance Voltages up to 3000 V DC. This kind of bearing are widely used in high quality demand application like traction motor.
Electrically Insulated Bearing can protect the machine to be exposed to electrical current. In a worst-case scenario, this can damage raceways and rolling elements, which in turn, causes the motor or generator to fail prematurely and without warning. On top of the extra expenses incurred for repairs, this also means additional costs caused by machine downtime and the resulting production losses.
Suffix of EASIER insulated bearing
| J20B | J20A *) | J20AA | J20C |
Disruptive Voltage | 500 VDC | 1 000 VDC | 1 000 VDC | 1 000 VDC |
Environment | dry | dry | dry/damp | dry/damp |
Coating Thickness | <100 μm | >200 μm | W200 μm | W200 μm |
Applicable | 70…1 400 mm | 70…1 400 mm | 70…500 mm | 70…340 mm |
Dimensions | outside diameter | outside diameter | outside diameter | inner ring bore |
EASIER s new series of Insulated ball bearings for generators and electric motors are specifically tailored to the customer’s needs. All of these bearings feature a sheet steel cage, which provides the following advantages compared to a standard solid brass cage:
• Easier bearing relubrication in the application
• Reduced weight
• Reduced noise generation thanks to optimized cage pocket geometry
| Designation | Principal dimensions | Basic load ratings | Fatique load limit | Speed ratings | Weight |
| Deep groove ball bearing | mm | mm | mm | dynamic | static |
| Reference speed | Limiting speed | kg |
| d | D | B | C[kN] | C0[kN] |
| [r/min] | [r/min] |
|
|
|
|
|
|
|
|
|
|
| 6314/C3VL0241 | 70 | 150 | 35 | 111 | 68 | 2.75 | 9500 | 6300 | 2.5 |
| 6314 M/C3VL0241 | 70 | 150 | 35 | 111 | 68 | 2.75 | 9500 | 9000 | 3 |
| 6215/C3VL0241 | 75 | 130 | 25 | 68.9 | 49 | 2.04 | 10000 | 6700 | 1.2 |
| 6315/C3VL0241 | 75 | 160 | 37 | 119 | 76.5 | 3 | 9000 | 5600 | 3.1 |
| 6315 M/C3VL0241 | 75 | 160 | 37 | 119 | 76.5 | 3 | 9000 | 8000 | 3.7 |
| 6216/C3VL0241 | 80 | 140 | 26 | 72.8 | 55 | 2.2 | 9500 | 6000 | 1.4 |
| 6316/C3VL0241 | 80 | 170 | 39 | 130 | 86.5 | 3.25 | 8500 | 5300 | 3.6 |
| 6316 M/C3VL0241 | 80 | 170 | 39 | 130 | 86.5 | 3.25 | 8500 | 7500 | 4.2 |
| 6217/C3VL0241 | 85 | 150 | 28 | 87.1 | 64 | 2.5 | 9000 | 5600 | 1.8 |
| 6317/C3VL0241 | 85 | 180 | 41 | 140 | 96.5 | 3.55 | 8000 | 5000 | 4.1 |
| 6317 M/C3VL0241 | 85 | 180 | 41 | 140 | 96.5 | 3.55 | 8000 | 7500 | 4.8 |
| 6218/C3VL0241 | 90 | 160 | 30 | 101 | 73.5 | 2.8 | 8500 | 5300 | 2.4 |
| 6318/C3VL0241 | 90 | 190 | 43 | 151 | 108 | 3.8 | 7500 | 4800 | 5 |
| 6318 M/C3VL0241 | 90 | 190 | 43 | 151 | 108 | 3.8 | 7500 | 7000 | 5.8 |
| 6219/C3VL0241 | 95 | 170 | 32 | 114 | 81.5 | 3 | 8000 | 5000 | 2.5 |
| 6219 M/C3VL0241 | 95 | 170 | 32 | 114 | 81.5 | 3 | 8000 | 7500 | 3 |
| 6319/C3VL0241 | 95 | 200 | 45 | 159 | 118 | 4.15 | 7000 | 4500 | 5.7 |
| 6319 M/C3VL0241 | 95 | 200 | 45 | 159 | 118 | 4.15 | 7000 | 6300 | 6.5 |
| 6220/C3VL0241 | 100 | 180 | 34 | 127 | 93 | 3.35 | 7500 | 4800 | 3.2 |
| 6320/C3VL0241 | 100 | 215 | 47 | 182 | 140 | 4.75 | 6700 | 4300 | 7 |
| 6320 M/C3VL0241 | 100 | 215 | 47 | 182 | 140 | 4.75 | 6700 | 6000 | 8.1 |
| 6222/C3VL0241 | 110 | 200 | 38 | 151 | 118 | 4 | 6700 | 4300 | 4.5 |
| 6222 M/C3VL0241 | 110 | 200 | 38 | 151 | 118 | 4 | 6700 | 6300 | 5.1 |
Features and Benefits of Coated Bearings 6314/C3VL0241
• Oxide ceramic coatings (J20...) provide a high level
of insulation. Plasma spraying is used to apply these coatings to the bearing surfaces.
• Thanks to a special sealant, the J20AA coating retains its insulating properties even in a damp environment.
The resulting oxide ceramic coating is very hard, wear resistant, and a good thermal conductor.
• The external dimensions of the current-insulated rolling bearings are in accordance with DIN 616
(ISO 15). This means that they are interchangeable with standard bearings.
• For special applications, such as those with a rotating outer ring, we recommend using an inner ring coated with J20C.
• Starting with the 62-series and up, coated deep-groove ball bearings are available in both open and sealed
versions (with lip seals on one or both sides). This
enables the user to also benefit from the advantages offered by for-life lubrication.
Coated outer ring
Bearings with an electrically insulating coating on the external surfaces of the outer ring are the most common INSOCOAT types. They are:
• Recommended for medium-sized motors using bearing sizes with a bore diameter < 120 mm
• Suitable for all housing types
• Can be applied to bearings with an outside diameter > 80 mm
• Identiied by the sufixes VL0241 and VL0246
Coated inner ring
Bearings with an electrically insulating coating on the external surfaces of the inner ring provide enhanced protection against electric current damage, as the smaller coated surface area offers higher impedance. They are:
• Recommended for larger-sized motors using bearing sizes with a bore diameter > 120 mm
• Can be applied to bearings with a bore diameter > 70 mm
• Identiied by the sufix VL2071 and VL2076
Principle bearing types for traction motor applications
• cylindrical roller bearings
• electrically insulated cylindrical roller bearings
• electrically insulated deep groove ball bearings
• hybrid cylindrical roller bearings with ceramic rollers
• hybrid deep groove ball bearings with ceramic balls
• traction motor bearing units based on cylindrical roller bearings and
deep groove ball bearings
• Sensorised traction motor bearing unit
• Regreasable traction motor bearing unit
E-mail: sales@xrbearing.com, brandbearings@gmail.com
Skype:brandbearings
Whatsapp: 0086-13280450757
www.xrbearing.com
