A conventional planetary idler will often use bearings that have outer races pressed into the gear and inner races mounted on a pin. These races occupy radial space that decreases the bending and shear strength of the gear and pin. The challenge has always been to design a gear and pin with sections that are as small as possible to reduce cost, and as large as necessary to maintain structural performance and provide enough space for bearings.
Timken's Planet Pac bearing for one- and two-piece straddle carriers eliminates this design dilemma by combining the inner races with the planetary pin and the outer races with the planetary gear. Planet Pac enables designers to use thicker gear sections in smaller diameter gears. This creates more radial space for larger diameter rolling elements that add to bearing capacity and bearing L-10.
Design Attributes
- Inner races are combined with the planetary pin and outer races with the planetary gear.
- Design flexibility enables designers to use thicker gear sections in smaller diameter gears.
Applications