CRBC 20025 NN C1 PD4 Bore 200 Mm, High Rigidity Type (CRBC) Crossed Roller Bearings, Open Type
The CRBC 20025 NN C1 PD4 Crossed roller bearings are suitable for high-precision, high-rigidity, and space-constrained rotary applications. Classic applications include industrial robot joints and positioners, CNC machine tool rotary tables and indexing heads, medical CT scanner rotating frames, radar antenna rotation mechanisms, precision measuring instruments, and aerospace simulation rotary tables.
The CRBC 20025 NN C1 PD4 bearing is a High rigidity type (CRBC) crossed roller bearings, open type with an inner diameter of 200 mm , an outer diameter of 260 mm, a width of 25 mm. It typically uses PD4 grade precision tolerances and 50Mn,42CrMo rings, GCr15 rolling mlement. It primarily bears radial, thrust and moment, Its dynamic radial rated load is approximately 82300 N, its static radial rated load is approximately 166400 N. It uses C1: Positive clearance standard radial clearance, NN: Open type type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
CRBC 20025 NN C1 PD4 bearings ( 200 mm x 260 mm x 25 mm) have the advantages of The rollers are arranged in a cross pattern, allowing them to withstand radial, axial, and overturning moments simultaneously. They offer high rigidity and rotational accuracy while compact and space-saving design, and easy installation, and are therefore widely used in the Industrial robots, CNC machine tools, medical equipment, precision measuring instruments and aerospace.
| Part Number | CRBC 20025 NN C1 PD4 |
| Bearing Type | High rigidity type (CRBC) crossed roller bearings, open type |
| Mounting Holes | Without mounting holes |
| Design | High rigidity (an inner ring and an outer ring), both inner and outer ring rotation |
| Rolling Element Type | Cylindrical Rollers |
| Rows NO. | One |
| Manufacturer Part Code | CRBC20025NNC1PD4 |
| Load | radial, thrust and moment |
| Seal symbol | NN: Open type |
| Accuracy class | PD4 |
| Temperature - T(min) [°C] | -30 |
| Temperature - T(max) [°C] | 120 |
| Interchangeable | HIWIN CRBC 20025 NN C1 PD4 |
| Inner/Outer Ring Material | 50Mn,42CrMo |
| Rolling Element Material | GCr15 |
| Axial internal clearance | C1: Positive clearance |
| C1 [µm] | 2 (min), 20 (max) |
| d φ Inside [mm] | 200 |
| D Φ Outside [mm] | 260 |
| T,B Width [mm] | 25 |
| dOH Oil Holes [mm] | 2.5 |
| Cr Radial Dynamic [N] | 82300 |
| C0r Radial Static [N] | 166400 |
| Mounting dimensions - da [mm] | 218 |
| Mounting dimensions - Da [mm] | 238 |
| Mounting dimensions - Du [mm] | 246 |
| Ca max Fillet Radius [mm] | 2 |
The CRBC 20025 NN C1 PD4 Crossed roller bearings consist of inner and outer rings, cylindrical rollers, spacers, and seals. The rollers are arranged at 90° intervals within a V-shaped raceway, allowing for multi-directional load bearing even in a single row.
Crossed roller bearings can simultaneously withstand radial loads, bidirectional axial loads, and overturning moments. They possess extremely high rigidity and rotational accuracy, and their compact structure saves installation space, simplifying machine tool design.
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