technical data Synchronous Belts and Belt Sprockets Selection
Official List
| item | official | Explanation of symbols |
|---|---|---|
| Pitch circle diameter Dp mm | Dp = N × p π | N: Number of pulley teeth p: Belt pitch mm |
| Belt speed V m/s | V = πDp × n 1000 × 60 | Dp: Pulley pitch diameter mm n: Pulley rotation speed r/min |
| Tension required for transmission Fa N {kgf} | Fa =
9.8 × 102 × P
V
=
2T
Dp
1000
For gravity units: |
P: Power kW V: Belt speed m/s T: Torque N・m {kgf・m} Dp: Pulley pitch diameter mm |
| Power P kW | P =
Fa × V
1000
=
T × n
974 × 9.8
For gravity units: |
Fa: Tension required for transmission N {kgf} V: Belt speed m/s T: Torque N・m {kgf・m} n: rotation speed r/min |
| Torque TN・m {kgf・m} | T =
9.8 × 974 × P
n
For gravity units: |
P: Power kW n: rotation speed r/min |
| Torque due to flywheel effect Tf N・m {kgf・m} | Tf =
Iπ(n2 - n1)
30t
For gravity units: |
I: Moment of inertia kg m 2 n 1: Rotational speed before acceleration (deceleration) r/min n 2: Rotational speed after acceleration (deceleration) r/min t: Time from n1 to n2 s GD 2: Flywheel effect {kgf·m 2} |
| Center distance C mm | C =
B + B2 - 2(Dp - dp)2
4
B = L - 1.57(Dp + dp) |
L: Belt length mm Dp: Pitch circle diameter of large pulley mm dp: Pitch circle diameter of small pulley mm |
| Belt length L mm | L = 2C + 1.57(Dp + dp) + (Dp - dp)2 4C | Dp: Pitch circle diameter of large pulley mm dp: Pitch circle diameter of small pulley mm C: Center distance mm |
| Number of meshing teeth on pinion Zm | Zm = N ×
Φ
360゜
Φ = 180゜ - 57゜(Dp - dp) C |
N: Number of teeth on pinion pulley Φ: Belt winding angle around the small pulley (degrees) Dp: Pitch circle diameter of large pulley mm dp: Pitch circle diameter of small pulley mm C: Center distance mm |
