Slewing Ring_Maanshan Tongli Slewing ring Co., Ltd.

Single-row Ball Slewing Ring: Single-row ball slewing rings utilize a single row of steel balls as rolling elements. The balls engage the raceway at four points, enabling simultaneous support of axial forces, radial forces, and overturning moments. For raceway center diameters ≤1800mm, single-row ball slewing bearings are the preferred choice.

Double-row Ball Slewing Ring: Double-row ball slewing rings are equivalent to two single-row ball bearings combined. They are the preferred choice for heavy-duty applications where radial structural dimensions are constrained. For raceway center diameters exceeding 1800 mm, double-row ball slewing bearings should be prioritized.

Three-row Roller Slewing Ring: Three-row roller slewing rings are suitable for heavy machinery requiring large diameters and capable of withstanding substantial loads. However, since each row of rollers bears its own load, they fail to achieve the theoretical mechanical performance specifications. This results in disadvantages such as low material utilization and high manufacturing costs.

Light Single-row Ball Slewing Ring: Lightweight single-row ball slewing rings feature a compact structure and relatively light weight, serving as standard products in Europe and America.

L-shaped Single-row Ball Slewing Ring: L-type single-row ball slewing bearings are primarily used in applications requiring larger diameters but with weight restrictions, typically in light machinery with lower load capacities, such as small cranes, manual lifts, and turntable aerial platforms.

Cross-roller Slewing Ring: Crossed-roller slewing bearings utilize a row of rollers arranged at 90° to each other as rolling elements. These rollers make line contact with the raceway, enabling simultaneous support of axial forces, radial forces, and overturning moments. A drawback is that only half of the rollers bear the load, resulting in actual load-carrying capacity falling short of theoretical design specifications.

Double-row Different Diameters Ball Slewing Ring: Double-row different diameters ball slewing ring feature three seat rings. Depending on the load conditions, two rows of steel balls with different diameters are distributed across the upper and lower rings. Both the upper and lower curved raceways have a 90-degree contact angle, enabling them to withstand significant axial forces and overturning moments. When the radial force exceeds 0.1 times the axial force, the raceway requires special design. A drawback is that each row of steel balls bears the load independently, resulting in low material utilization and high manufacturing costs.

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Roller & ball Combination Slewing Ring: Roller & ball combination slewing ring features two rows of raceways: one row of rollers that bear axial forces, and one row of balls that bear axial forces, radial forces, and overturning moments. It is primarily designed for applications involving large axial forces, small radial forces, and overturning moments.