PK V belts key dimensions

1. CHECK THE REFERENCE 

A belt’s reference provides you with a lot of information about its key dimensions. Let’s take the belt 6PK1893, tells us:

• the number of ribs (6)

• the type of profile it has (PK)

• and what the nominal length of the belt is (1893)

But how about the belt width, length and thickness?

2. BELT WIDTH

The width of a belt depends on the profile and the number of ribs. The most-used profile in the automotive industry is the PK profile. This standardised profile has a width of 3.56 mm per rib (i.e. pitch):

3PK = 10.68 mm

4PK = 14.24 mm

5PK = 17.80 mm

6PK = 21.36 mm

3. BELT LENGTH

No aftermarket supplier manufactures an exact belt for each engine. Instead, belts with very similar dimensions are taken and grouped into a single belt that covers several OE lengths, provided that they do not exceed the tolerance of each engine. Slight differences in length do not negatively impact belt performance. After all, tolerances are common in the original belts too. Over time, belts tend to become somewhat longer, under the influence of wear and stretch. 

Having a single belt cover several measures makes it unnecessary to manufacture a huge amount of references that would, in turn, become an abundance of stock. Indeed, producing exact matches for each OE belt would generate an unmanageable volume of belts for the aftermarket, which is not only inefficient but also unprofitable.

4. BELT THICKNESS

The belt’s thickness cannot be derived from the reference. It depends on the design of the belt .So, while the profile of a belt is standardised, the thickness is not. It may vary by supplier.

 To avoid choosing the wrong belt, you should Make sure everything Above  before you take the order. 

Heiyi V belts, PK belts