6334M/C3J20AA Deep Groove Ball Bearings, Current Insulation, Ceramic Coated
The 6334M/C3J20AA INSOCOAT deep groove ball bearings are widely used in equipment where there is a risk of shaft current, such as: variable frequency motors (pump, fan, compressor drive motors), wind turbines, rail transit traction motors, industrial machine tool spindles, medical equipment (medical lathes, rehabilitation therapy equipment), and mining machinery drive systems.
The 6334M/C3J20AA bearing is a deep groove ball bearings, current insulation, ceramic coated with an inner diameter of 170 mm , an outer diameter of 360 mm, a width of 72 mm. It typically uses PN grade precision tolerances and GCr15SiMn rings, Its dynamic radial rated load is approximately 325003 N, its static radial rated load is approximately 364987 N. It uses C3 standard radial clearance, Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
6334M/C3J20AA bearings ( 170 mm x 360 mm x 72 mm) have the advantages of The surface insulating coating prevents electrical erosion damage while retaining the low friction, high speed, and bidirectional load-bearing characteristics of deep groove ball bearings, and are therefore widely used in the Electric motors, generators, railway vehicle traction motors, frequency converters, and medical equipment.
| Part Number | 6334M/C3J20AA |
| Reference From | FAG 6334M/C3J20AA |
| Bearing Type | deep groove ball bearings, current insulation, ceramic coated |
| Series | 63..-M-J20AA |
| Coating | J20AA = current insulation, outer ring ceramic coated |
| Sealing | Open |
| Cage | M = Solid brass cage, ball-guided |
| Radial internal clearances | C3 |
| Heat stabilization | S1 = (up to 200 °C) |
| Lubricant | Without |
| Weight [lb] | 80.909 |
| Cr Radial Dynamic [lbf] | 73060 |
| C0r Radial static [lbf] | 82049 |
| Cur Radial Fatigue [lbf] | 3410 |
| nB Reference speed [rpm] | 2688 |
| nG Limiting speed [rpm] | 3205 |
| Operating temperature - T(min) [°C] | -30 |
| Operating temperature - T(max) [°C] | 200 |
| d φ Inside [inch] | 6.693 |
| D Φ Outside [inch] | 14.173 |
| B Width [inch] | 2.835 |
| r(min.) [inch] | 0.157 |
| D1 [inch] | 11.768 |
| d1 [inch] | 9.154 |
| Mounting dimensions | |
| da(min.) [inch] | 7.362 |
| Da(max.) [inch] | 13.504 |
| ra(max.) [inch] | 0.118 |
| Coefficient - F0 [inch] | 13.9 |
The 6334M/C3J20AA INSOCOAT deep groove ball bearings are primarily composed of high-precision bearing steel inner and outer rings, steel balls, and a cage (stamped steel or solid brass). The core component is an alumina insulating coating applied to the outer surface of the inner or outer ring using a plasma spraying process, employing a single-row deep groove ball configuration.
The insulating coating of INSOCOAT deep groove ball bearings effectively prevents stray currents from passing through the bearing, avoiding electro-corrosion damage. It achieves a minimum resistance of 200MΩ at 1000V DC and withstands voltages up to 3000V DC. It also possesses the low friction, low noise, and low vibration characteristics of deep groove ball bearings, can withstand radial loads and bidirectional axial loads, and is easy to install and maintain.
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