Cookies on the SKF website

We use cookies to ensure that we give you the best experience on our websites and web applications. By continuing without changing your browser settings, we assume you give your consent to receive cookies. However, you can change your browser cookie setting at any time.

Calculating the guide width

The requisite guide width can be calculated for:

  • piston guide housing width using

  • rod guide housing width using

L=requisite guide housing width [mm]
D=cylinder bore diameter [mm]
d=rod diameter [mm]
F=radial load [N]
f=safety factor (→ Calculation considerations)
p=maximum recommended bearing load pressure [N/mm2] (table 1)

Calculation example

What is the required guide housing width L for a PGR piston guide ring made of phenolic resin with cotton fabric laminate (PF), a cylinder bore diameter of D = 100 mm, considering a radial load of 20 000 N and an operating temperature of 80 °C (normal conditions)?

From table 1, the maximum recommended bearing load pressure p = 30 N/mm2. The safety factor is chosen with 2. The requisite guide housing width L is

The requisite guide housing width is 15,3 mm. However, choose a 20 mm housing width, which is the nearest larger housing and guide width L, such as guide ring PGR 100x94x20-PF (→ Size list metric [pdf]).
SKF logo