CRBE 11528 C WW C1 P4 Bore 115 Mm, High Rigidity With Mounting Holes (CRBE) Crossed Roller Bearings, Sealed Type
The CRBE 11528 C WW C1 P4 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 CRBE 11528 C WW C1 P4 bearing is a High rigidity with mounting holes (CRBE) crossed roller bearings, sealed type with an inner diameter of 115 mm , an outer diameter of 240 mm, a width of 28 mm. It typically uses P4 = (ISO Class 4 / ABEC-7) grade precision tolerances and 50Mn,42CrMo rings, GCr15 rolling mlement. It primarily bears radial, thrust and moment, Its dynamic radial rated load is approximately 73100 N, its static radial rated load is approximately 131900 N. Its dynamic axial rated load is approximately 162000 N, its static axial rated load is approximately 300000 N. It uses C1: Positive clearance standard radial clearance, WW: Double sides Sealed type type, NBR (Nitrile Butadiene Rubber). together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
CRBE 11528 C WW C1 P4 bearings ( 115 mm x 240 mm x 28 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 | CRBE 11528 C WW C1 P4 |
| Bearing Type | High rigidity with mounting holes (CRBE) crossed roller bearings, sealed type |
| Mounting Holes | C: With opposite direction counter-bored holes (Sink holes on inner ring and outer ring , reverse direction) |
| Design | High rigidity with mounting holes (an inner ring and an outer ring with mounting holes), both inner and outer ring rotation |
| Rolling Element Type | Cylindrical Rollers |
| Rows NO. | One |
| Manufacturer Part Code | CRBE11528CWWC1P4 |
| Load | radial, thrust and moment |
| Seal symbol | WW: Double sides Sealed type |
| Seal Material | NBR (Nitrile Butadiene Rubber) |
| Accuracy class | P4 = (ISO Class 4 / ABEC-7) |
| Temperature - T(min) [°C] | -30 |
| Temperature - T(max) [°C] | 120 |
| Interchangeable | HIWIN CRBE 11528 C WW C1 P4 |
| 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] | 115 |
| D Φ Outside [mm] | 240 |
| T,B Width [mm] | 28 |
| C min Chamfer [mm] | 1.5 |
| dOH Oil Holes [mm] | 3 |
| Cr Radial Dynamic [N] | 73100 |
| C0r Radial Static [N] | 131900 |
| Ca Dynamic Axial [N] | 162000 |
| C0a Static Axial [N] | 300000 |
| m Weight [kg] | 6.76 |
| nB Reference speed (grease) [r/min] | 330 |
| nG Limiting speed (oil) [r/min] | 440 |
| Mounting dimensions - da [mm] | 168 |
| Mounting dimensions - Da [mm] | 188 |
| Td max Idling torque [Nm] | 2.7 |
| PCD1 Inner rings [mm] | 139 |
| Inner rings mounting holes | 12-φ9 through φ14 counter bore depth 8.6 |
| PCD2 Outer rings [mm] | 217 |
| Outer rings mounting holes | 12-φ9 through φ14 counter bore depth 8.6 |
The CRBE 11528 C WW C1 P4 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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