2.1.3 Plastic Roller Plus Plastic Sleeve Chain
Transmission, conveyance: Maintenance-free type, general uses
Plastic Sleeve Chain is used for general purpose with small loads, and under conditions that require maintenance-free or low-noise applications.
Construction and Features
Figure 2.5 Plastic Sleeve Chain
Figure 2.6 Plastic Sleeve Chain Versus Other Chains
This chain has the features shown below:
- A small coefficient of friction (R-Roller): 0.08 versus 0.12 for all-steel chain.
- Light weight: 30 percent less than the weight of all-steel chain with R-rollers.
- Low noise: the noise made from engaging the sprockets is 5 to 7 dB lower.
- In Plastic Sleeve Chain, the maximum allowable tension is one-sixth, and the allowable load of the R-roller is about one-third that of the same-sized all-steel chain (with lubrication).
Use the same sprockets as for Double Pitch Roller Chain.
There are special low-noise engineered plastic R-rollers, which can reduce the noise from the standard engineered plastic type by 7 dB. The allowable roller load for low-noise R-rollers is about 30 percent less than standard engineered plastic R-rollers.