The Tools Developed from Chain
Here we show three unique tools developed from chains.
- Tough Roller (Figure 1)
This tool consists of a frame and an endless assembly of rollers wrapping around a center plate in the frame.
Comparing Tough Roller design to general roller bearing, the center plate in the frame works as an inner ring, and the surface on which the Tough Roller travels acts as an outer ring. Rollers function like cylindrical roller bearings, and the plate, together with the pin, act as a retainer. Due to its features, like high capacity (maximum allowable load = 100 tons) for its small body size, small running friction and low center of gravity, this tool is used in low-frequency conveyance of heavy objects.
- Shafted Bearing Roller (Figure 2)
In this bearing roller, the roller has a shaft installed on it, which permits use as a support or guide wheel.
There are a variety of sizes and options available in this construction. Roller diameters range from 31.8 to 125 mm; maximum allowable load from 1.27 to 27.5 kN. The roller can be an R-type or F-type. There are various options, such as a urethane coating applied to the outer surface, or there can be a 5-degree taper in the channel.
- Attachment with Shafted Bearing Roller
In this bearing roller, the roller is attached to the K-1 attachment of the chain. It can be used as support or a guiding wheel. Capacity and specifications are the same as for the shafted bearing roller.
Figure 1 Tough Roller
Figure 2 Shafted Bearing Roller