Demanding downhole applications such as Artificial Lift or ESP motors and seals (protectors), mud motors, etc. require unique thrust bearing solutions. D&S Engineered Products Inc. offers specialized hydrodynamic tilting pad thrust bearings having a unique surface treatment. These bearings are matched with a runner (thrust collar) whose surface is treated with the tribological pair to the bearing surface. The result is a bearing-runner pair that provides superior performance, reliability and longevity.

Thrust bearings are available in rocker back or Pliant Pivot tilting pad versions.

Application Guide

Tribological Pair  Suitability to (0 - not suitable 5 - highly suitable)
Thrust Face
(Steel Backed)
Runner Face
(Steel Backed)
Dry COFCostHigh
Speed
High
Load
High TempThin FilmCorrosionSour GasSand
PEEK^
(molded)
- no coating -
(hardened)
0.2-0.35 $$ 3 3 3 3 3 0 0
Si-C
(bonded wafer)
W-Co
(bonded wafer)
0.15-0.2 $$$$$ 5 4 5 5 5 4 5
Si3N4
(bonded wafer)
- no coating -
(hardened)
0.2-0.3 $$$$ 4 4 5 4 4 4 5
W-C
(bonded wafer)
W-Co
(bonded wafer)
0.2-0.25 $$$$ 5 4 5 4 5 4 4
PCD
(bonded wafer)
- no coating -
(hardened)
0.1-0.15 $$$$$ 5 4 5 4 3 4 5
HARDFACE
(coating)
HARDFACE
(coating)
0.3-0.6 $$$ 4 3 5 5 5 5 5

^Not suitable for mud motors

All tribological pairs listed are suitable for electric submersible pumps, mud motors and other downhole equipment except where noted.