CRBH Series
High Rigidity Crossed Roller Bearings
20–250mm Bore | Integrated Inner/Outer Ring | P5/P4/P2 Grade | POM Separators
The CRBH series features an integrated (one-piece) inner and outer ring structure, making it the most versatile crossed roller bearing for general industrial applications. POM plastic separators between each cylindrical roller ensure low-friction, smooth rotation with stable torque characteristics. Designed for robot joints, machine tool rotary axes, medical positioning equipment, and precision inspection systems.
High-Rigidity Integrated Crossed Roller Bearings for Industrial Automation
Luoyang Songju CRBH series crossed roller bearings feature an integrated (one-piece) inner and outer ring structure manufactured from vacuum-degassed GCr15 bearing steel. The perpendicular (90°) cylindrical roller arrangement in V-groove raceways enables simultaneous support of radial, axial (both directions), and moment loads with a single compact bearing assembly.
POM (polyoxymethylene) plastic separators between each roller reduce friction, prevent roller-to-roller contact, and maintain consistent roller spacing throughout the rotation cycle. This results in smooth rotational torque, reduced operating temperature, and higher permissible speeds compared to full-complement designs — making the CRBH ideal for continuous-rotation applications.
The integrated ring structure simplifies installation — both inner and outer rings are one-piece, eliminating the need to manage separate ring halves during mounting. Standard models are available in P5, P4, and P2 precision grades. Open type (standard) and sealed type (suffix UU) with dual synthetic rubber seals are available for contamination protection.
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CRBH Series — High Rigidity Crossed Roller Bearing Model Parameters
Complete standard model list for CRBH series crossed roller bearings. All models feature integrated inner/outer ring structure with POM separators. Available in open and sealed (UU) configurations.
| Bearing Model | d (mm) | D (mm) | B (mm) | Cr (kN) | C0r (kN) | Mass (kg) |
|---|---|---|---|---|---|---|
| CRBH 208 A | 20 | 36 | 8 | 2.91 | 2.43 | 0.04 |
| CRBH 2510 A | 25 | 41 | 8 | 3.12 | 2.81 | 0.05 |
| CRBH 3010 A | 30 | 55 | 10 | 7.6 | 8.37 | 0.12 |
| CRBH 3510 A | 35 | 60 | 10 | 7.9 | 9.12 | 0.13 |
| CRBH 4010 A | 40 | 65 | 10 | 8.61 | 10.6 | 0.16 |
| CRBH 4510 A | 45 | 70 | 10 | 8.86 | 11.3 | 0.17 |
| CRBH 5013 A | 50 | 80 | 13 | 17.3 | 20.9 | 0.29 |
| CRBH 6013 A | 60 | 90 | 13 | 18.8 | 24.3 | 0.33 |
| CRBH 7013 A | 70 | 100 | 13 | 20.1 | 27.7 | 0.38 |
| CRBH 8016 A | 80 | 120 | 16 | 32.1 | 43.4 | 0.74 |
| CRBH 9016 A | 90 | 130 | 16 | 33.1 | 46.8 | 0.81 |
| CRBH 10020 A | 100 | 150 | 20 | 50.9 | 72.2 | 1.45 |
| CRBH 11020 A | 110 | 160 | 20 | 52.4 | 77.4 | 1.56 |
| CRBH 12025 A | 120 | 180 | 25 | 73.4 | 108.0 | 2.62 |
| CRBH 13025 A | 130 | 190 | 25 | 75.9 | 115.0 | 2.82 |
| CRBH 14025 A | 140 | 200 | 25 | 81.9 | 130.0 | 2.96 |
| CRBH 15025 A | 150 | 210 | 25 | 84.3 | 138.0 | 3.16 |
| CRBH 20025 A | 200 | 260 | 25 | 92.3 | 169.0 | 4.0 |
| CRBH 25025 A | 250 | 310 | 25 | 102.0 | 207.0 | 5.0 |
All models available in P5, P4, and P2 precision grades. Standard: GCr15 bearing steel, POM separators. Suffix A = standard. Suffix UU = double sealed. Custom bore sizes, preload classes (T1, C1, C2), and specialty materials available upon request.
Why Choose Luoyang Songju CRBH Crossed Roller Bearings
The most versatile crossed roller bearing — integrated ring structure for reliable industrial automation
Integrated Ring Structure
Both inner and outer rings are one-piece (integrated) design — eliminating the need to manage separate ring halves during installation. Simplifies mounting, reduces assembly time, and ensures consistent bearing performance across production batches.
3–4× Higher Rigidity
Line contact between cylindrical rollers and V-groove raceways delivers 3–4 times greater rigidity than equivalently sized double-row angular contact ball bearings. Critical for precision positioning applications where deflection under load must be minimized.
POM Separator Technology
Precision-molded POM (polyoxymethylene) separators between each roller eliminate roller-to-roller friction, maintain consistent spacing, and enable higher rotational speeds than full-complement designs. Results in smooth torque, reduced heat generation, and longer grease life.
Stable Rotational Torque
Anti-skewing separator design prevents roller misalignment during rotation — maintaining consistent friction torque even under fluctuating loads and speeds. Essential for servo-controlled positioning systems requiring predictable motion characteristics.
Open & Sealed Options
Open type (standard) for oil-bath or grease lubrication with external sealing. UU type with dual synthetic rubber seals for grease retention and contamination exclusion — ideal for dusty industrial environments or maintenance-free applications.
ISO & IKO Interchangeable
Manufactured to ISO dimensional standards. Direct drop-in replacement for IKO CRBH series and THK equivalent high-rigidity crossed roller bearings. Same mounting dimensions, same performance — competitive pricing with shorter lead times.
Industries & Applications for CRBH Crossed Roller Bearings
CRBH Series crossed roller bearings are trusted across a wide range of precision industries worldwide.
Industrial Robot Joints
CRBH series is the industry workhorse for robot swivel joints, wrist axes, and rotary actuators. Integrated ring structure ensures consistent preload and precision under the repetitive duty cycles of automated manufacturing.
Machine Tool Rotary Axes
CNC rotary tables, index tables, and trunnion axes benefit from CRBH's high rigidity and POM separator smoothness. The open type supports oil-mist lubrication systems common in machine tool environments.
Medical Imaging Equipment
CT scanner gantry rotation, C-arm positioning, and radiation therapy systems demand CRBH's combination of smooth rotation, high rigidity, and reliable long-term operation in clinical settings.
Semiconductor Manufacturing
Wafer inspection stages, die bonders, and precision alignment systems. P2 grade CRBH bearings deliver the sub-micron running accuracy required for semiconductor fabrication and inspection processes.
Need CRBH High Rigidity Crossed Roller Bearings?
Tell us your bore size, precision grade (P5/P4/P2), seal preference (open/UU), preload class, and quantity. Our engineers will respond within 24 hours with a quotation and technical documentation.