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Motor Calculation

The document outlines the calculations for the shaft diameter and RPM of an auto filter cleaning machine for the DMRC project. Key calculations include the driven pulley diameter, resulting RPM of 206, and a calculated belt length of 3480 mm. The document also specifies motor power, torque, and material properties for the shaft, concluding with a recommended minimum diameter of 30 mm.

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RAHUL SINGH
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17 views2 pages

Motor Calculation

The document outlines the calculations for the shaft diameter and RPM of an auto filter cleaning machine for the DMRC project. Key calculations include the driven pulley diameter, resulting RPM of 206, and a calculated belt length of 3480 mm. The document also specifies motor power, torque, and material properties for the shaft, concluding with a recommended minimum diameter of 30 mm.

Uploaded by

RAHUL SINGH
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Project - Auto Filter Cleaning Machine ( DMRC)

Project No. - GEL-C-306

Calculation of shaft dia & rpm for filter cleaning machine :-

Driver pulley dia. (d1) = 76.2 mm

Driven pulley dia.(D2) = 533.2 mm

N1 = 1440 RPM

N2 = ?

d1N1 = D2N2

N2 = d1 x N1 / D2 = 76.2 x 76.2 / 533.2

= 205.7 RPM SO i say = 206 RPM

velocity = π x d1 x N1 / 60 x1000

= π x 76.2 x 1440 / 60 x1000

= 5.57 m/s

Length of belt = c =1240

L = 2c + π(D2+d1)/2 + (D2-d1)2 /4c

= 2 x1240 + π( 533.2+76.2)/2 + (533.2 - 76.2)2/4 X1240

= 2480 +957.2 + 42.1

= 3479.3 so , i say 3480 mm

Motor (P) = 2.238 kw

N = 206 rpm
P = 2 x π x N x T / 60

T = P x 60 / 2 x π x n = 2.238 x60 / 2 x π x 206 = 103744.2 N-mm

Shaft Material = SS-304

UTS = 515 MPA = 515 N/MM2

Allowable Tensile Stress ( take factor of safety = 6) = 515/6 =85.83 N/MM2

Allowable shear stress ( 40 %) = 34.33 N/MM2

(D)3 = 16 x T / fs x π

D = 16 x 103744.2 / 34.33 x π = 15390.7 = 24.8 = 25mm

However using 30 mm dia (minimum)

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