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Sheave Size Calculator
The Sheave Size calculator determines the required prime mover sheave diameter to achieve a target SPM, and calculates the corresponding belt length.

Inputs

FieldDescription
Prime Mover RPMMotor/engine speed
Gear Reducer RatioGearbox reduction ratio
Gear Reducer Sheave Diameter (in)Gearbox input sheave size
Center Distance Of Shafts (in)Distance between motor and gearbox shafts
SPMTarget strokes per minute

Outputs

Summary

OutputDescription
Prime Mover Sheave Diameter (in)Required motor sheave size
Belt LengthRequired V-belt length (inches)

Sheave Diameter Table

Shows required sheave diameter at various prime mover RPM values, helping identify practical sheave sizes for different motor speeds.

Sheave Size Chart

Visual graph showing Prime Mover Sheave Diameter vs. Prime Mover RPM, illustrating how sheave size requirements change with motor speed.

Use Cases

  • Select motor sheave for target SPM
  • Evaluate motor speed options
  • Order correct belt length
  • Plan sheave changes for production adjustments