Technical Data Drive chain Roller Chain Selection
13. Special Selection Method for Corrosion Resistant Roller Chain
When selecting Corrosion Resistant Chain use the allowable load selection method.
- 1. The maximum allowable load for certain Corrosion Resistant Chain models is low compared to standard RS Roller Chain.
- 2. Avoid using offset links when possible.
- 3. Refer (click here) to select proper chain when acid or alkali solutions or chemicals will come in direct contact with the chain.
13.1 Selection formula
Maximum working load applied to the chain
×
Service factor Ks
×
RPM Kn
×
Number of teeth factor Kz
≦
Maximum allowable load of the chain
×
(Drag to move. )
Service factor Ks
The kW ratings are based on conditions of minimal load fluctuation. Depending on the degree of load fluctuation, it may be necessary to correct the kilowatt ratings using the service factor Ks.
Use Table 2 below to determine the appropriate service factor based on the type of machine and the source of power.
The design kW value is obtained by multiplying the kilowatt ratings by the service factor.
| Type of impact | Example of machine used | Motor type | ||
|---|---|---|---|---|
| Motor or turbine | internal combustion engine | |||
| With hydraulic drive | Without hydraulic drive | |||
| Smooth | Belt conveyors with little load fluctuation, chain conveyors, centrifugal pumps, centrifugal blowers, ordinary textile machines, and ordinary machines with little load fluctuation. | 1.0 | 1.0 | 1.2 |
| Moderate | Centrifugal compressors, marine engines, conveyors with moderate load fluctuation, automatic furnaces, dryers, pulverizers, general machine tools, compressors, general construction machines, general paper mill machines. | 1.3 | 1.2 | 1.4 |
| Large | Presses, crushers, construction and mining equipment, vibration machines, oil well rigs, rubber mixers, rolls, roll gangs, general machines with reverse or large-impact loads | 1.5 | 1.4 | 1.7 |
×
(Drag to move. )
RPM Kn
| Speed r/min | RPM Kn |
|---|---|
| Less than 27 | 1.00 |
| 27 or more, less than 37 | 1.03 |
| 37 or more, less than 50 | 1.07 |
| 50 or more, less than 70 | 1.10 |
| 70 or more, less than 100 | 1.14 |
| 100 or more, less than 150 | 1.19 |
| 150 or more, less than 300 | 1.27 |
| 300 or more, less than 500 | 1.34 |
| 500 or more, less than 1000 | 1.44 |
| 1000 or more, less than 2000 | 1.54 |
| 2000 or more, less than 4000 | 1.65 |
×
(Drag to move. )
Number of teeth factor Kz
| Number of teeth | Number of teeth factor Kz |
|---|---|
| 9 or more, less than 12 | 1.16 |
| 12 or more, less than 15 | 1.14 |
| 15 or more, less than 18 | 1.12 |
| 18 or more, less than 24 | 1.10 |
| 24 or more, less than 30 | 1.08 |
| 30 or more, less than 38 | 1.06 |
| 38 or more, less than 47 | 1.04 |
| 47 or more, less than 60 | 1.02 |
| 60 or higher | 1.00 |
