NRT 80 B
Detailed parameters and installation dimensions:
| Part Number | NRT 80 B |
| Series | NRT series (NRT..B) |
| Internal design | B = Modified internal design |
| Dimension Inside - d φ | 80 mm | 3.1496 inch |
| Dimension Outside - D Φ | 146 mm | 5.7480 inch |
| Dimension Height - H | 35 mm | 1.3780 inch |
| Type | NRT = Axial-radial cylindrical roller bearing |
| Units | Metric |
| Bearing Mass - m | 2.2 kg | 4.8501 lb |
| Fillet radius - r1 min | 0.3 mm | 0.0118 inch |
| Fillet radius - r2 min | 0.3 mm | 0.0118 inch |
| Dimension - d1 | 130 mm | 5.1181 inch |
| Removal threads Size - G | M5 |
| Retaining bolts Size | M5 |
| Radial Dynamic Capacity - Cr | 54524 N | 12256 lbf |
| Radial Static Capacity - C0r | 101495 N | 22816 lbf |
| Housing Bolt size | M4 |
| Shaft Bolt size | M5 |
| Ring Material | GCr15SiMn |
| Removal threads Number of threads | 3 |
| Removal threads Angle between threads | 120 ° |
| Housing Pitch | 30 ° |
| Shaft Number of bolts | 10 |
| Housing Number of bolts | 9 |
| Housing Tightening torque | 4.5 N·m |
| Shaft Pitch | 30 ° |
| Shaft Tightening torque | 8.5 N·m |
| Dynamic Axial Capacity - Ca | 37139 N | 8348 lbf |
| Static Axial Capacity - C0a | 199344 N | 44812 lbf |
| Retaining bolts Number of bolts | 2 |
| Retaining bolts Angle between bolts | 180 ° |
| Outer ring (housing washer) width - C | 12 mm | 0.4724 inch |
| Distance - H1 | 23.35 mm | 0.9193 inch |
| Bearing Type | Super-precision axial-radial cylindrical roller bearings for support rotary tables |
| Manufacturer Part Code | NRT80B |
| Load | Axial-radial |
| Dimension hole pitch circle - J | 92 mm | 3.6220 inch |
| Dimension hole pitch circle - J1 | 138 mm | 5.4331 inch |
| Dimension through hole - N | 5.6 mm | 0.2205 inch |
| Dimension sinkhole - N1 | 10 mm | 0.3937 inch |
| Dimension through hole - N2 | 4.6 mm | 0.1811 inch |
| Dimension sinkhole depth - a | 4 mm | 0.1575 inch |
| Speed ratings (grease) - nB | 345 min–1 |
| Speed ratings (oil) - nG | 684 min–1 |
| Axial preload | 1214 N | 272 lbf |
| Axial unloading force | 2772 N | 623 lbf |
| Roller Material | GCr15SiMn |
| Frictional moment - CRL | 3 N·m |
| Axial stiffness for preload - A (sets of two bearing) | 4923 N/µm |
| Axial stiffness for preload - B (sets of two bearing) | 3059 N/µm |
| Moment stiffness | 6964 N·m/mrad |
| Guideline rotary table diameter | 200 mm | 7.8740 inch |
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NRT 80 B refers to a specialized type of NRT series (NRT..B) Super-precision axial-radial cylindrical roller bearings for support rotary tables, with dimensions 80 mm (Bore) x 146 mm (OD) x 35 mm (Width), designed for High precision, high rigidity, and high reliability, primarily used in high-end CNC machine tools, robots, measurement and semiconductor equipment, the grease speed ratings: 345 rpm, oil speed ratings: 684 rpm, for applications precision equipment requiring high-precision rotation and overturning moment bearing capacity. the Basic load can reach (dynamic radial:54524, static radial:101495, ), It weight approximately 2.2 kilogram.
Axial-radial cylindrical roller bearings, super-precision (NRT 80 B) features:
Suitable for high-precision applications requiring resistance to combined loads. It can withstand radial loads, bidirectional axial loads, and overturning moments without clearance, and is used in bearing arrangements where high operational accuracy is required.
Installation is very simple.
The NRT 80 B bearings adopts a High precision, high rigidity, and high reliability design, from NRT series (NRT..B) (series), the equipment operates more stably , and the maximum speed can reach (Limit Speed Ratings (grease) rpm:345 Limit Speed Ratings (oil) rpm:684).
Axial-radial cylindrical roller bearings, super-precision (NRT 80 B) application:
Vertical-axis, Positioning and Indexing Tables, Rotary Grinding, Industrial, Robotic Arms
- Min. Order: 1 Piece/(NRT 80 B, 80 = ID, 146 = OD, 35 = B, 2.2 kg) or according to different suppliers
- Price: Different brands, different quality, different NRT 80 B prices, different suppliers and different quality determine different prices, you can ask the supplier in detail for the price according to your own needs.
- Precision Rating: DIN: P2~P0; ANSI: ABEC9~ABEC1; JIS: JIS~JIS0; ISO: CLASS2~NORMAL CLASS; GB/T30794 B~G
- Inquiry ways: The right of the inquiry form, Email, skype, Whatsapp
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