CRBH20025A High Rigidity Crossed Roller Bearings Open Type With Separator
The CRBH20025A 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 CRBH20025A bearing is a High Rigidity Crossed Roller Bearings Open type with separator with an inner diameter of 200 mm , an outer diameter of 260 mm, a width of 25 mm. It typically uses ABEC-1; ABEC-3; ABEC-5; ABEC-7; ABEC-9 grade precision tolerances and 50Mn,42CrMo rings, GCr15 rolling mlement. It primarily bears radial, thrust and moment, Its dynamic radial rated load is approximately 92300 N, its static radial rated load is approximately 169000 N. It uses T1; C1; C2 standard radial clearance, Open type type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
CRBH20025A 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 | CRBH20025A |
| Bearing Type | High Rigidity Crossed Roller Bearings Open type with separator |
| Mounting holes | No |
| Type | CRBH..A |
| Seal Type | Open type |
| Bore Type | Cylindrical |
| Rolling Element Type | cylindrical rollers |
| Oil holes | Outer ring has an oil groove and two oil holes |
| Manufacturer Part Code | CRBH 20025 A |
| Load | radial, thrust and moment |
| Interchangeable | IKO CRBH20025A |
| Units | Metric |
| Rows NO. | One |
| Rolling Element Material | GCr15 |
| Inner/Outer Ring Material | 50Mn,42CrMo |
| Lubrication | grease |
| Accuracy class | ABEC-1; ABEC-3; ABEC-5; ABEC-7; ABEC-9 |
| Guidance of cylindrical roller | with separator |
| Temperature - T(min) [°C] | -20 |
| Temperature - T(max) [°C] | 120 |
| Shaft diameter [inch] | 7.874 |
| d φ Inside [inch] | 7.874 |
| D Φ Outside [inch] | 10.236 |
| B Width [inch] | 0.984 |
| r min Chamfer [inch] | 0.039 |
| da Mounting dimensions [inch] | 8.346 |
| Da Mounting dimensions [inch] | 9.764 |
| nB Reference speed (grease) [r/min] | 326 |
| nG Limiting speed (oil) [r/min] | 652 |
| Cr Radial Dynamic [lbf] | 20749 |
| C0r Radial Static [lbf] | 37991 |
| Internal Clearance | T1; C1; C2 |
| Radial internal clearances - T1 | min: -15 µm , max: 0 µm |
| Radial internal clearances - C1 | min: 0 µm , max: 20 µm |
| Radial internal clearances - C2 | min: 20 µm , max: 50 µm |
| m Bearing Weight [kg] | 4.0 |
| Similar Model | CRBH 20025 A T1 , CRBH 20025 A T1 P6 CRBH 20025 A T1 P5 , CRBH 20025 A T1 P4 CRBH 20025 A T1 P2 , CRBH 20025 A C1 CRBH 20025 A C1 P6 , CRBH 20025 A C1 P5 CRBH 20025 A C1 P4 , CRBH 20025 A C1 P2 CRBH 20025 A C2 , CRBH 20025 A C2 P6 CRBH 20025 A C2 P5 , CRBH 20025 A C2 P4 CRBH 20025 A C2 P2 |
The CRBH20025A 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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