Con-Serv Inc

Type CHP Slide Bearings


This bearing system utilizes the self-lubricating, low-friction characteristics of PTFE coupled with the high tensile strength characteristics of synthetic fibers.

The unique system employs a stainless steel upper element sliding on a CHP lower element. This two element concept has seen worldwide acceptance for major pipeline, bridge, building and industrial applications. The system will yield long life under high load applications. This system gives the designer high pressure allowable loads even at design temperatures of 500°F.

The design engineer shall determine the square inches of bearing area required for the lower element by dividing the load by the allowable pressure from the graph. The upper element is sized for the movement after the lower element is sized for pressure. Size is out ot out of back-up plate.

For ease of installation, CON-SERV recommends a back-up plate 1" larger than the PTFE size to allow a 1/2" recess all around. This recess must be provided for plates requiring a seal weld.

This bearing system has been tested in a long cycle friction apparatus. The coefficient of friction at 70°F for the load ranges indicated varies from 4% to 5%. This variation is due to the initial break-in period, not due to the variation in pressure.

When friction was recorded at the design temperature limit of 500°F, it was 1-1/2% to 1-1/2%, depending on the dwell time at 500°F. It is interesting to note that friction decreases with increases in either load or temperature.

Certifications are available on this data upon request with job applications.

Guide Specifications

The following specifications for CON-SLIDE (Type CHP) Slide Bearings will give the engineer a quality product when installed:

The bearing system consists of an upper element faced with stainless steel and a lower element faces with Type CHP, as manufactured by:
Airport Industrial Park
685 Aviation Blvd.
Dept. W
Georgetown, SC 29440
Phone: 843-546-1044.
The stainless steel shall be no less than 20 ga. A 240 Type 304 having a surface finish of less than 20 microinches RMS on the side in contact with CHP. The stainless steel shall be bonded in the center as well as TIG stitch welded or spot welded around the periphery. The CHP material is a nominal 1/16" thick bonded in a heated bonding press under a controlled time and pressure.

The coefficient of friction shall average .04 at 6000 psi. at 70°F. The element shall be flat and clean. Slots and holes if required shall be fabricated in the bearing manufacturer's plant.


See the installation instructions in the previous section, which are also applicable to this type of bearing.

Slide Surface Back-up Plate
Thickness Material Thickness Material
Upper 03 SS 13 = 10 GA CS = Carbon Steel
Alternates: Alternates: Alternates:
06 SS 25 = 1/4"
37 = 3/8"
50 =1/2"
75 = 3/4"
100 = 1"
SS = Stainless Steel
CT = Corten Steel
GL = Galvanized Steel
AL = Aluminum
Lower 06 CHP 13 CS = Carbon Steel
See Above See Above

Airport Industrial Park

685 Aviation Blvd.

Georgetown, SC 29440

Phone 843.546.1044