Technical Data Coupling Sizing and procedure
To view selection procedures and precautions, please proceed to the following.
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Nylon Chain Coupling Selection
1. Operating conditions
- (1) Daily operating hours
- (2) Load characteristics and type of motor
- (3) Transmitted power or torque, and rotation speed
- (4) Outer diameters of connected shafts
2. Selection Method
- (1) Obtain the service factor from the table of service factors on the right-hand side according to the operating conditions.
- (2) Multiply the transmitted power [kW] (or torque) by the service factor to calculate the correction transmission power [kW] (or correction torque).
- (3) Use the transmission capacity table to select a coupling that satisfies the correction transmission power (or correction torque) at the operating rotation speed. (See Table below. )
- (4) If the required shaft diameter exceeds the maximum shaft diameter of the coupling selected, adopt a coupling a size larger.
- (5) In the low speed range, the contact pressure may become excessive when using a standard key. In this case, consider whether or not it will be necessary to use a special key or spline bore by calculating key contact pressure.
- (6) When choosing a coupling for direct connection to a motor, refer to the Direct Motor Connection Selection Table below.
| Load characteristics | Motor type | ||||
|---|---|---|---|---|---|
| Motor Turbine |
Steam engine Gasoline engine (4 cylinders or more ) |
Diesel engine Gas engine |
|||
| Low fluctuation, low impact, low starting torque, and no reverse rotation | 1.0 | 1.5 | 2.0 | ||
| Middle fluctuation, middle impact, and no reverse rotation (standard load ) |
1.5 | 2.0 | 2.5 | ||
| High fluctuation, high impact, reverse rotation, and loaded starting | 2.0 | 2.5 | 3.0 | ||
- Note) The above table shows rough service factor standards Decide on the service factor according to the operating conditions.
[Reference ]Relationship between torque, transmission, and rotation speed
T = 9550 × P n T = 974 × P n
- T：Torque N・m
- P：Power transmission kW
- n：Speed r/min
| Motor Output kW | Motor shaft diameter | Model No. | ||
|---|---|---|---|---|
| 2P | 4P | 6P | Standard type | |
| 0.2 | 0.2 | - | 11 | CN310 |
| 0.4 | 0.4 | - | 14 | CN311 |
| 0.75 | 0.75 | 0.4 | 19 | CN315 |
| 1.5/2.2 | 1.5 | 0.75 | 24 | CN317 |
| - | 2.2 | 1.5 | 28 | CN415 |
| 3.7 | 3.7 | 2.2 | 28 | CN415 |
| 5.5/7.5 | 5.5 | 3.7 | 38 | CN419 |
| - | 7.5 | 5.5 | 38 | * CN614 |
| 11/15 | 11 | 7.5 | 42 | * CN615 |
| - | 15 | 11 | 42 | * CN616 |
- Note ) 1. Motors are Class E, B and F totally enclosed fan-cooled types of the new standard.
- Note ) 2. Models marked with an asterisk (*) do not support 2-pole motors.
- Note ) 3. This selection table applies to common loads (service factors between 1 and 1.5).
