How to get the size of the carrier roll?

Prepare the right information by separating the tube length, the total mile length and the installation distance.

Why is a single length measure not enough?

Giving the total length in the order of the roll may not show that the piece will match the current shade. The tube length, the total length of the mile, the shade's interior openness and the placement of the beds are different measures. If a new roll is replaced by the existing piece, this information must be evaluated together. It is useful to share photos that show the whole of the roll and the two miles end next to the measurement list.

The tube and the tube length

If possible, measure the outer diameter of the tube with a rubber. The outer diameter of the metal tube with the finished outer diameter in a covered roll may be different; specify which one you measure. Do not mix the tube length with end cover and mill moves. If the cover carries out of the tube, also show this situation in the drawing. If there is PVC, rubber or other cover, also record the type, thickness and whether the cover is damaged.

Mills and the form of assembly

The miles ends may be flat, dentary, freeze, bright or different in a link form. The two ends should be drawn separately if not the same. The miles diameter, the flat surfaces on the end, the tooth size and the connection length affect the assembly compatibility. If the miles are bright, explain in which position the measure is taken. Try to verify it with a sample or technical picture instead of writing as a measure that is not read due to the passage or stretching as a fixed.

Identify the Tahrik elements

The rounds with a tooth, O-ring channel or Poly-V shell are not only sufficient with a tube size. The element's position, the number of shell, the chain size or the channel geometry must be compatible with the transmission order. Add photos that close to show the side appearance of the current roll and the driver element. Two shell or shell that are similar to each other, the measurements should not be considered equivalent without verification.

Add the working conditions.

The weight of the product to be transported, the rolling step, the line width, the speed and the working environment affect the selection of the material. Note if there is washing, moisture, dust or chemical contact. Photo measurement does not replace; but it makes it easy to understand the piece with a measurable crockey. If you only have a sample in your hand, the technical interview can determine together which measures should be verified.