technical data Drive chain Roller Chain Selection
13. Special Selection Method for Environmentally Resistant Drive chain
The method for selecting environmentally resistant roller chains is based on allowable tension.
- 1. Some environmentally resistant roller chains have a lower Maximum allowable load than RS roller chain.
- 2. Avoid the use of offset links whenever possible.
- 3. If acids, alkaline liquids, or chemicals come into direct contact with the chain, refer to this page to select an appropriate chain.
13.1 Selection formula
Maximum load applied to the chain
×
Service factor Ks
×
Rotation coefficient Kn
×
Tooth number factor Kz
≦
Maximum allowable load
×
(You can move it by dragging it)
Service factor Ks
The transmission capacity is based on the condition that the load fluctuation is small, so the transmission kW is corrected by Service factor Ks depending on the size of the load fluctuation.
Service factor Ks is determined based on Table 2, depending on the type of machine and prime mover.
Multiply the transmitted kW by Service factor to find design kW.
| Shock type | Examples of machines used | Type of engine | ||
|---|---|---|---|---|
| motor turbine |
Internal Combustion Engines | |||
| Fluid Coupling Attached |
Fluid Coupling none |
|||
| Smooth transmission | Belt conveyors and chain conveyors with minimal load fluctuations Centrifugal pumps, centrifugal blowers, general textile machinery, General machinery with little load fluctuation |
1.0 | 1.0 | 1.2 |
| A bit of a shock Accompanying transmission |
Centrifugal compressors, marine propulsion units, conveyors with slight load fluctuations, Automatic furnaces, dryers, crushers, general machine tools, compressors, General construction machinery, general paper-making machinery |
1.3 | 1.2 | 1.4 |
| A big shock Accompanying transmission |
Presses, crushers, construction and mining machinery, vibrating machines, Oil well drills, rubber mixers, rolls, roll guns, General machinery subject to reverse or shock loads |
1.5 | 1.4 | 1.7 |
×
(You can move it by dragging it)
Rotation coefficient Kn
| Rotational speed r/min | Rotation coefficient Kn |
|---|---|
| Under 27 | 1.00 |
| 27以上37未満 | 1.03 |
| 37以上50未満 | 1.07 |
| 50以上70未満 | 1.10 |
| 70以上100未満 | 1.14 |
| 100以上150未満 | 1.19 |
| 150以上300未満 | 1.27 |
| 300以上500未満 | 1.34 |
| 500以上1000未満 | 1.44 |
| 1000以上2000未満 | 1.54 |
| 2000以上4000未満 | 1.65 |
×
(You can move it by dragging it)
Tooth number factor Kz
| Number of teeth | Tooth number factor Kz |
|---|---|
| 9以上12未満 | 1.16 |
| 12以上15未満 | 1.14 |
| 15以上18未満 | 1.12 |
| 18以上24未満 | 1.10 |
| 24以上30未満 | 1.08 |
| 30以上38未満 | 1.06 |
| 38以上47未満 | 1.04 |
| 47以上60未満 | 1.02 |
| 60 and over | 1.00 |
