What is meant by the cross-section of a turntable belt?
The cross-section refers to the shape and surface that would be visible if you cut the belt crosswise - i.e. perpendicular to the running direction. It is therefore not about the length or circumference of the belt, but about its geometric shape when cut.
Why is the cross-section important?
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It determines how well the belt runs on the pulley.
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It influences flexibility and power transmission.
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It helps when selecting a replacement belt (correct fit and function).
Typical cross-section shapes:
| Cross-section shape | Cross-section shape Description | Application |
|---|---|---|
| Round | Circular (like a thin rubber rope) | Often used with older or smaller drives |
| Flat | Like a narrow ribbon or rubber strip | Common on many modern turntables |
| Square | Square cut | Rather rare, with special turntables |
Note:
"Cross-section = shape and size of the cut surface when the belt is cut crosswise."
So if you read on a package, for example: "Flat belt, 5 mm wide, 0.7 mm thick", this describes the cross-section as rectangular with 5 × 0.7 mm.
