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V Belts

This document provides details of a V-belt calculation for transferring power between two pulleys. It lists the specifications of the V-belt and pulleys used, including the belt type, length, speed of each pulley, and their diameter and distance between centers. Calculations are shown for the forces on the belt during operation and while under pretension, both based on catalog values and accounting for the coefficient of friction.

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61 views3 pages

V Belts

This document provides details of a V-belt calculation for transferring power between two pulleys. It lists the specifications of the V-belt and pulleys used, including the belt type, length, speed of each pulley, and their diameter and distance between centers. Calculations are shown for the forces on the belt during operation and while under pretension, both based on catalog values and accounting for the coefficient of friction.

Uploaded by

alecandro_90
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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KISSsoft Release 03/2015 F

KISSsoft evaluation
File

Name : VBelt 1
Description: KISSsoft example
Changed by: kspl on: 07.03.2016 at: 10:55:35

V-Belt calculation

Basis: According manufacturer data

V-belt
Type SPZ-narrow V-Belt-DIN 7753:1988/ISO 4184:1992-(CONTI-V)
Elasticity (N) [E] 44308.00
Weight per length (kg/m) [wl] 0.0720
Length (mm) [l] 1400.00
Max. perm. Belt speed. (m/s) [vmax] 50.00
Number of belts [neff] 1
Theoretical no of belts [nth] 0.76
Sheave width (mm) [b] 16.00

Nominal power (kW) [Pn] 2.00


Operating factor [f1] 1.00
Operating power (kW) [Pmax] 2.00

Sheave 1 Sheave 2
------- -------
Effective diameter (mm) [dwk] 100.00 200.00
Loop (°) 167.57 192.43
Speed (1/min) [n] 1500.00 750.00
Service torque (Nm) [T] 12.73 25.47
Ratio [n] 2.000
Center distance (mm) [a] 461.670

Angle factor [c1] 0.970


Length factor [c3] 0.980
Load coefficient for input to the fast [f2] 1.000
Nominal power acc. catalogue (kW) [P] 2.560
Additional power due to ratio (kW) [dP] 0.213

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Belt speed (m/s) [v] 7.85
Frequency of bending (Hz) [fB] 11.22
Slip (%) [s] 0.57
Circumferential force (from torque) (N) [Fu] 254.67
Centrifugal force (N) [Ff] 4.44

PRETENSION ACCORDING CATALOGUE

Test force (N) [Fe] 25.00


Slack (mm) [te] 10.65
End of rope force in stand (N) [Fstat] 204.94
End of rope force in no load / load (N) [Ft] 73.17 / 327.83
Critical speed for no load / load (m/s) [vcrit] 32.83 / 67.93
Tension distance (mm) [sw] 3.26

Sheave 1 Sheave 2
------- -------
Radial force in service (N) [Fab] 399.59 399.59
Radial force standing. (N) [Fas] 407.47 407.47

PRETENSION ACCORDING CALCULATION WITH COEF. OF FRICTION (MIN: VALUES)

(Calculation according Niemann, Book III, with rope friction law)


Coefficient. of friction [my] 1.30
End of rope force in stand (N) [Fstat] 137.59
End of rope force in no load / load (N) [Ft] 5.82 / 260.48
Critical speed for no load / load (m/s) [vcrit] 11.94 / 60.66
Tension distance (mm) [sw] 2.19

Sheave 1 Sheave 2
------- -------
Radial force in service (N) [Fab] 266.17 266.17
Radial force standing. (N) [Fas] 273.56 273.56

Utilization: (%) [A] 75.86

Formula: A = belt.nth / belt.neff * 100

End of Report lines:


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