CARB Toroidal Roller Bearings
Self-Aligning Non-Locating Bearings with Wide Axial DisplacementBearing Type: CARB Toroidal Roller Bearing
Size Range: 25-1800 mm
Primary Load: High radial load
Axial Function: Accommodates axial displacement; non-locating function
Self-Alignment: Compensates for angular misalignment
Bore Options: Cylindrical bore or tapered bore.
Technical Specifications
| Specification | Details |
|---|---|
| Bearing Type | CARB Toroidal Roller Bearing |
| Size Range | 25-1800 mm |
| Primary Load | High radial load |
| Axial Function | Accommodates axial displacement; non-locating function |
| Self-Alignment | Compensates for angular misalignment |
| Bore Options | Cylindrical bore or tapered bore |
| Special Design | V-type option |
| Axial Working Range | Wide; displacement beyond 8% of bearing width may be permissible depending on operating clearance |
| Cross Section | Compact relative to load capacity |
| System Role | Combines spherical-bearing alignment with cylindrical-bearing displacement |
| Replacement Scope | Can replace selected self-aligning, spherical, cylindrical or needle-bearing arrangements |
CARB Toroidal Roller Bearings Overview
CARB is a toroidal roller bearing with a distinctive internal geometry that combines the self-aligning capability of a spherical roller bearing with the axial displacement capability of a cylindrical roller bearing. It also provides high radial load capacity in a relatively compact cross section.
Unlike conventional self-aligning bearings, axial displacement is not governed only by radial clearance. The curved raceways and toroidal rollers permit simultaneous angular adjustment and axial movement, giving CARB a wider usable working zone for non-locating bearing positions.
Self-Alignment and Axial Displacement
CARB compensates for angular misalignment caused by shaft deflection or housing-seat errors while allowing thermal expansion and other axial movement inside the bearing. This dual capability helps reduce internal stress and avoids unnecessary axial restraint in long-shaft systems.
- Automatic compensation of angular misalignment
- Wide axial displacement capability
- Non-locating bearing function
- Accommodates shaft thermal expansion
Compact High-Capacity Working Zone
The toroidal rollers and raceways maintain efficient radial contact over a broad range of alignment and axial positions. At an axial displacement equal to about 8% of bearing width, the risk of creating radial preload is lower than in a spherical roller bearing with C4 clearance; even larger displacement may be acceptable depending on operating clearance.
- High radial load capacity
- Compact bearing cross section
- Broader operating zone than conventional alternatives
CARB cylindrical-bore and tapered-bore structures
Bore and Structural Options
| Option | Configuration | Selection Guidance |
|---|---|---|
| Cylindrical Bore | Straight cylindrical bore | Direct shaft or sleeve mounting according to fit requirements |
| Tapered Bore | Tapered bore with axial drive-up setting | Facilitates mounting and clearance adjustme |
| V Type | Special structural variant for application-specific arrangements | Select according to shaft, housing and displacement requirements |
System Advantages and Replacement Potential
By combining functions that would otherwise require separate bearing features, CARB can simplify non-locating bearing arrangements and improve tolerance to misalignment and axial movement. Depending on the application, it can replace selected self-aligning ball, spherical roller, cylindrical roller or even needle-bearing solutions.
Size range: 25-1800 mm
Typical Applications
- Continuous casting machines
- Paper-making machinery
- Crushers and grinding mills
- Power transmission systems
- Conveyor systems
- Textile machinery
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