CRBF11528AC2 High Rigidity Crossed Roller Bearings (Mounting Holed Type)
The CRBF11528AC2 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 CRBF11528AC2 bearing is a High Rigidity Crossed Roller Bearings (Mounting Holed Type) with an inner diameter of 115 mm , an outer diameter of 240 mm, a width of 28 mm. It typically uses P0 = (ISO Class NORMAL / ABEC-1) grade precision tolerances and 50Mn,42CrMo rings, GCr15 rolling mlement. It primarily bears radial, thrust and moment, Its dynamic radial rated load is approximately 84300 N, its static radial rated load is approximately 138000 N. It uses C2 standard radial clearance, No seal (Open) type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
CRBF11528AC2 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 | CRBF11528AC2 |
| Bearing Type | High Rigidity Crossed Roller Bearings (Mounting Holed Type) |
| Mounting holes | With counter-bored mounting holes on both inner ring and outer ring in the same direction |
| Type | CRBF..A |
| Seal Type | No seal (Open) |
| Bore Type | Cylindrical |
| Rolling Element Type | cylindrical rollers |
| Oil holes | Outer ring has an oil groove and two oil holes |
| Manufacturer Part Code | CRBF 11528 A C2 |
| Load | radial, thrust and moment |
| Interchangeable | IKO CRBF11528AC2 |
| Units | Metric |
| Rows NO. | One |
| Rolling Element Material | GCr15 |
| Inner/Outer Ring Material | 50Mn,42CrMo |
| Lubrication | grease |
| Accuracy class | P0 = (ISO Class NORMAL / ABEC-1) |
| Guidance of cylindrical roller | with separator |
| Temperature - T(min) [°C] | -20 |
| Temperature - T(max) [°C] | 120 |
| Shaft diameter [inch] | 4.528 |
| d φ Inside [inch] | 4.528 |
| D Φ Outside [inch] | 9.449 |
| B Width [inch] | 1.102 |
| r1 min Chamfer [inch] | 0.059 |
| r2 min Chamfer [inch] | 0.059 |
| PCD1 Mounting holes [inch] | 5.472 |
| Inner ring Mounting holes | 12-φ9 through φ14 counter bore depth 13.5 |
| PCD2 Mounting holes [inch] | 8.543 |
| Outer ring Mounting holes | 12-φ9 through φ14 counter bore depth 13.5 |
| da Mounting dimensions [inch] | 6.378 |
| Da Mounting dimensions [inch] | 7.795 |
| nB Reference speed (grease) [r/min] | 423 |
| nG Limiting speed (oil) [r/min] | 845 |
| Cr Radial Dynamic [lbf] | 18950 |
| C0r Radial Static [lbf] | 31022 |
| Internal Clearance | C2 |
| Radial internal clearances - C2 | min: 20 µm , max: 50 µm |
| m Bearing Weight [kg] | 6.63 |
| Similar Model | CRBF 11528 A C2 P6 CRBF 11528 A C2 P5 CRBF 11528 A C2 P4 CRBF 11528 A C2 P2 |
The CRBF11528AC2 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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