Surface coating wear resistance enhancement

VERTICAL PUMP ENHANCEMENT SERVICE OFFERINGSLifecycle Extension＆ Energy Savings・Environmental Efficiency

PEEK resin abrasion and erosion resistance enhancement

Transforming a single seal into a tandem double-seal structure helps reduceatmospheric leakage. By installing an auxiliary device (reservoir tank) as well, it becomes possible to detect and prevent liquid leakage by stopping thepump safely before any serious damage can occur.

Application of surface coating (thermal spray)to the exterior of wetted parts increases surfacehardness and wear resistance. EBARA spraysnickel-based super-heated Colmonoy® surfacingalloys to achieve extremely high surface hardnessof HRC 55 to 60 (about HV 690).

*Colmonoy® is a regiestered trademark of Wall Colmonoy

Seal remodeling enhancement (gas seal)

Addition of a gas seal to a single seal creates a doubleseal structure that reduces leakage and improvesdetection of abnormalities throughout the entire device. The gas seal enhancement can be used for both gasand liquid pumps.

By installing pressure andlevel gauges and switches it ispossible to detect functionalabnormalities or leakage.

Single seal cross-section

damaging water-bound slurryparticles

damaged casings after and during thermal spraying

carbon bearing wear

typical rubber bearing wear

Case 1

Case 1

Case 4

Case 6

Case 3

Case 5

Case 2

Case 2

Case 3

Case 4

Installation of a precision crafted labyrinth seal with highclearance allows for optimal performance. Its environmentallyfriendly design reduces harmful waste by suppressing dustintake and stopping oil leakage. Its non-contact structurewill prevent power leaks while eliminating shaft wear.

Case 5

(mechanical cartridge seal)

Mechanical seal with cover and shaft sleeve is easy to mount,reducing assembly time and labor.

Case 6

single seal

labyrinth seal 3d image

gas seal (double seal)

Reservoir Tank（protective device）API682 PLAN 52

PEEK Resin EnhancementPEEK bearing high performance resin contains

carbon fiber

EBARA MODEL：VPCS API 610 PUMP TYPE: VS6

labyrinth seal cross-sectionconventional

single mechanismcartridge type

single mechanism

Tandem (double) seal cross-section

5 6

Application of PEEK resin will improve wear resistance while guarding againstcorrosive liquids. PEEK will not induce galling during assembly, thereby extendingthe lifecycle, and improving the stability and maintainability of the pump.

Seal remodeling enhancementNon-contact labyrinth bearing seal

Seal remodeling enhancement (tandem seal)