Chọn một quốc gia hoặc khu vực khác để xem nội dung cho vị trí của bạn.
United States
06:39:57 GMT+0000 (Coordinated Universal Time)
NNU4938-S-K-M-SP
Cylindrical roller bearing
Super precision cylindrical roller bearings NNU49..-S-K-M-SP, non-locating bearing, double row, with tapered bore, taper 1:12, separable, with cage
Thông tin về sản phẩm
Main Dimensions & Performance Data
| d | 190 mm | Bore diameter |
| D | 260 mm | Outside diameter |
| B | 69 mm | Width |
| Cr | 410,000 N | Basic dynamic load rating, radial |
| C0r | 880,000 N | Basic static load rating, radial |
| Cur | 106,000 N | Fatigue load limit, radial |
| nG Grease | 2,900 1/min | Limiting speed for grease lubrication |
| nG Oil | 3,450 1/min | Limiting speed for oil lubrication |
| ≈m | 11.375 kg | Trọng lượng |
Mounting dimensions
| da | 210.5 mm | Diameter shaft shoulder |
h12 | Diameter shaft shoulder tolerance | |
| Da | 242 mm | Diameter of housing shoulder |
H12 | Diameter of housing shoulder tolerance | |
| ra1 max | 2 mm | Maximum recess radius |
Dimensions
| r1 min | 2 mm | Minimum chamfer dimension |
| F | 212 mm | Raceway diameter inner ring |
| ns | 9.5 mm | Width of lubricating groove |
| ds | 4.8 mm | Diameter lubrication hole |
| s | 3.2 mm | Axial displacement |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 150 °C | Operating temperature max. |