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Roller Bearings
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Cylindrical Roller Bearings
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Super-Precision Cylindrical Roller Bearings
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Super-Precision Axial-Radial Cylindrical Roller Bearings
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NRT 850 A
NRT 850 A
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Overview |
|
| Part Number | NRT 850 A |
Characteristics |
|
| System of Measurement | Metric |
| Roller Bearing Type | Cylindrical |
| For Load Direction | Combined |
Dimensions |
|
| Bore Dia | 850 mm |
| Bore Dia Tolerance | -0.05mm to 0 |
| Outer Dia | 1095 mm |
| Outer Dia Tolerance | -0.055mm to 0 |
| Width | 124 mm |
| Shoulder Diameter Inner Ring - Large Shoulder | 1018 mm |
| Chamfer Dimension r2 (min.) | 1.5 mm |
| Height Tolerance | -0.85mm to 0 |
| Distance | 80.5 mm |
| Outer Ring (Housing Washer) Width | 37 mm |
| Outer Ring (Housing Washer) Chamfer Dimension r1 (min.) | 1.5 mm |
| Inner Ring (Shaft/Locating Washer) Hole Pitch Circle Diameter | 890 mm |
| Outer Ring (Housing Washer) Hole Pitch Circle Diameter | 1055 mm |
| Inner Ring (Shaft/Locating Washer) Through Hole | 18 mm |
| Outer Ring (Housing Washer) Through Hole | 18 mm |
| Inner Ring (Shaft Washer) Sinkhole | 26 mm |
| Inner Ring (Shaft Washer) Sinkhole Depth | 17 mm |
Material |
|
| Ring Material | Chrome Steel |
| Roller Material | Chrome Steel |
| Cage Material | Brass |
Performance |
|
| Basic Dynamic Load Rating - Axial Direction | 415 kN |
| Basic Dynamic Load Rating - Radial Direction | 473 kN |
| Basic Static Load Rating - Radial Direction | 2120 kN |
| Attainable Speed For Grease Lubrication | 40 r/min |
| Attainable Speed For Oil-Air Lubrication | 80 r/min |
| Axial Preload | 47 kN |
| Axial Unloading Force | 103 kN |
| Axial Stiffness For Preload A (sets of two brgs back-to-back or face-to-face) | 77000000 kN/µm |
| Axial Stiffness For Preload B (sets of two brgs back-to-back or face-to-face) | 22400000 kN/µm |
| Frictional Moment | 300 N·m |
| Moment Stiffness | 7011 kN·m/mrad |
| Temperature Range | -30° to 110 °C |
Properties |
|
| Lubrication | Grease, Oil |
| RoHS | Compliant |
| REACH | Compliant |
| Weight | 253 kg |
