Enter the railing length and the diameter of one spindle into the calculator to determine the spindle spacing.

Spindle Spacing Formula

The following formula is used to calculate the spindle spacing.

SS = (RL - D) / (N + 1)

Variables:

  • SS is the spindle spacing
  • RL is the railing length
  • D is the diameter of one spindle
  • N is the total number of spindles

To calculate the spindle spacing, subtract the diameter of one spindle from the railing length. Then divide the result by the total number of spindles plus one.

What is a Spindle Spacing?

Spindle spacing refers to the distance between the spindles, which are the rod-like structures used in various machines such as spinning wheels, lathes, and milling machines. In the context of cell biology, spindle spacing is the distance between the two spindle poles during cell division. The correct spindle spacing is crucial for accurate chromosome segregation and the prevention of aneuploidy, a condition that can lead to diseases like cancer.

How to Calculate Spindle Spacing?

The following steps outline how to calculate the Spindle Spacing.


  1. First, determine the Railing Length (RL).
  2. Next, determine the Diameter of one spindle (D).
  3. Next, determine the Total number of spindles (N).
  4. Next, gather the formula from above = SS = (RL – D) / (N + 1).
  5. Finally, calculate the Spindle Spacing (SS).
  6. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Railing Length (RL) = 120

Diameter of one spindle (D) = 10

Total number of spindles (N) = 15