Cylindrical Roller bearings are available in a variety of designs including double row (NN) and single row (N). Cylindrical Rollers with a cage can accommodate heavy radial loads, rapid accelerations and high speeds, whereas full complement bearings incorporate a maximum number of rollers for use with very heavy radial loads but moderate speeds.
Single row cylindrical roller bearings are separable, so the bearings ring with the roller and cage assembly can be separated completely form the outer ring, this can simplify mounting and dismounting the bearing. When combined with Precision Angular Contact Thrust bearings, the Cylindrical Roller bearings meet high rigidity requirements of many machine tool spindle applications.
Datas of NN3021W33M2KC1NAP4 – Nachi Precision Cylindrical Roller
| NN | 30 | 21 | W33 | M2 | K | C1NA | P4 |
|---|---|---|---|---|---|---|---|
| Double Row – Ribbed Inner, Non Ribbed Outer | 30 Series | Bore Size – 105mm | With Outer Ring Oil Groove and Oil HOle | Machined Brass Cage (Separate) | Tapered Bore | Non-Interchangeable Clearance | Precision Rating |
| Dimensions (mm) | Contact Angle | Weight (kg) | Brand | ||
|---|---|---|---|---|---|
| d | D | B | |||
| 105 | 160 | 41 | Double Row | 2.89 | TAT® |
| Basic Dynamic Load Rating (kN) | Speed Limitaions(r/min) | ||
|---|---|---|---|
| Dynamic | Static | Grease Lubrication | Oil-air Lubrication |
| 198 | 320 | 5800 | 6800 |
