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Home >> Shaft Seals >> DMR Bearing Isolators

Bearing Isolators - Protech Seal

Daemar Bearing Isolators (Protech Seals) are designed to protect bearings with zero lubricant leakage and total exclusion of contaminants. Below is the most common profiles that are available.


 

Bearing Isolator Technology

The unique technology has been developed over a number of years to provide total bearing protection by ensuring zero leakage of lubricant to atmosphere and total exclusion of contaminants from the bearing housing. Lip seals are primarily designed to keep lubricants in, and are not always effective at keeping contaminants out. Surveys have shown that even a tiny amount of water or dirt in the lubricant can drastically reduce bearing operating life.

Unique Design

The DMR Bearing Isolator is based on a simple, unitized, two-piece design normally manufactured in chemically resistant PTFE. The product range Bearing Isolator ProTech consists of a complete family of complementary designs that provides outstanding performance for virtually any application. Applications with pressurized, flooded, or sealed bearing housings can now benefit from Types FS and FN, which feature an internal lip seal, again offering benefits of zero leakage and zero entry of contaminants.

Applications

High-grade PTFE composites in the construction of the standard bearing isolator range ensure a wide range of operating capabilities, including high and low temperature and extreme chemical environments. The use of alternative PTFE fillers extends the physical properties and capabilities into such areas as food production and pharmaceuticals. DMR Bearing Isolators can normally replace existing sealing devices, without modification to the equipment.

Extending equipment operating life across these industries:

  • Chemical Processing
  • Pulp and Paper
  • Oil and Gas
  • Mining
  • Food and Beverage

Bearing Isolators/Protechseals  LS Series

LS Series

Flanged General purpose sealing in a flanged design. PTFE material. Excludes heavy water spray and dry contaminants from the bearing cavity. Retains grease and oil splash (oil level must be below inboard oil drain-back or non-flooded).

Applications: electric motors, pumps, mixers, gear boxes, blowers and custom equipment.

Bearing Isolators/Protechseals  LN Series

LN Series

Non-Flanged- Specifically designed for flush mount applications. General purpose sealing in non-flanged design. PTFE material. Excludes heavy water spray and dry contaminants from the bearing cavity. Retains grease and oil splash (oil level must be below inboard oil drain-back or non-flooded).

Applications: electric motors, pumps, mixers, gear boxes, blowers and custom equipment.

Bearing Isolators/Protechseals  LM Series

LM Series

Step Shaft- Specifically designed to accommodate step shaft applications. Flanged design. PTFE material. Excludes heavy water spray and dry contaminants from the bearing cavity. Retains grease and oil splash (oil level must be below inboard oil drain-back or non flooded).

Applications: electric motors, pumps, mixers, gear boxes, blowers and custom equipment. Note: LD Series, please consult Daemar Inc for mulit-port applications.

Bearing Isolators/Protechseals  LW/LX Series

LW/LX Series

Wrap Around- Specifically designed for heavier water spray exclusion. Vertical up option design is "LX" same as "LW" but with no drain port. PTFE material. Excludes heavy water spray and dry contaminants from the bearing cavity. Retains grease and oil splash (oil level must be below inboard oil drain-back or non flooded).

Applications: electric motors, pumps, mixers, gear boxes, blowers and custom equipment.

Bearing Isolators/Protechseals  LD Series

LD Series

Multi Port- For use in applications where drain port cannot be fixed at six o'clock position. PTFE material. Excludes heavy water spray and dry contaminants from the bearing cavity. Retains grease and oil splash (oil level must be below inboard oil drain-back or non flooded).

Applications: electric motors, pumps, mixers, gear boxes, blowers and custom equipment. Note: LD Series, please consult Daemar Inc for mulit-port applications.

Bearing Isolators/Protechseals  LB Series

LB Series

Pillow Block- Solid seal design for sealing split pillow block bearings. PTFE material. Excludes heavy water spray and dry contaminants from the bearing cavity. Retains grease and oil splash (oil level must be below inboard oil drain-back or non flooded).

Applications: Drop in replacement for LER ring for split pillow block bearings. Easily interchanged by LER number and shaft diameter.

Bearing Isolators/Protechseals  SB Series

SB Series

Pillow Block- Split seal design for sealing split pillow block bearings. PTFE material. Excludes heavy water spray and dry contaminants from the bearing cavity. Retains grease and oil splash (oil level must be below inboard oil drain-back or non flooded).

Applications: Drop in replacement for LER ring for split pillow block bearings. Easily interchanged by LER number and shaft diameter.

Bearing Isolators/Protechseals  SL Series

SL Series

Split- Split design for field retrofits where equipment can not be uncoupled or disassembled. Requires no wear sleeves or shaft refurbishment. PTFE material. Excludes heavy water spray and dry contaminants from the bearing cavity. Retains grease and oil splash (oil level must be below inboard oil drain-back or non flooded).

Applications: electric motors, pumps, mixers, gear boxes, blowers and custom equipment.

Bearing Isolators/Protechseals  WD Series

WD Series

Wash Down- Wash down purpose in narrow flanged designs. PTFE material. Specifically designed to exclude high pressure water spray and dry contaminants in limited space applications. For grease retention.

Applications: Small disposable electric motors and equipment for food processing industry. Economical for 140 & 480 frame IEEE 841 electric motors.

Bearing Isolators/Protechseals  ML Series

ML Series

Flanged Millennium-Specifically designed for heavier water spray exclusion. Bronze material. Also excludes dry contaminants from the bearing cavity. Retains grease and oil splash (oil level must be below inboard oil drain-back or non-flooded).

Applications: electric motors, pumps, mixers, gear boxes, blowers and custom equipment.

Bearing Isolators/Protechseals  MN Series

MN Series

Non-flanged Millennium- Specifically designed for flush mount applications. General purpose sealing in non-flanged design. Bronze material. Excludes heavy water spray and dry contaminants from the bearing cavity. Retains grease and oil splash (oil level must be below inboard oil drain-back or non-flooded).

Applications: electric motors, pumps, mixers, gear boxes, blowers and custom equipment.

Bearing Isolators/Protechseals  FS Series

FS Series

Flanged 360- Specifically designed for oil flooded and oil mist applications. Maximum 5 psi (.03 bar) internal pressure. PTFE material with stainless steel rotor. Excludes heavy water spray and dry contaminants from the bearing cavity.

Applications: electric motors, pumps, mixers, gear boxes, blowers, cooling towers, aerators  and custom equipment. Oil mist lubrication systems.

Bearing Isolators/Protechseals  FN Series

FN Series

Non-flanged 360- Specifically designed for oil flooded and oil mist applications where seal must be flush mounted. Maximum 5 psi (.03 bar) internal pressure. PTFE material with stainless steel rotor. Excludes heavy water spray and dry contaminants from the bearing cavity.

Applications: electric motors, pumps, mixers, gear boxes, blowers, cooling towers, aerators  and custom equipment. Oil mist lubrication systems.

Bearing Isolators/Protechseals SG Series

SG Series

Superior Bearing- Protection for Electric Motors. Proprietary conductive PTFE. Grease and oil splash (oil level must be below shaft) Water spray & dry contaminants from bearing cavity - IP66 rating IEEE 841 & NEMA electric motors. The seal provides  two types of superior bearing protection on electric motors; it excludes 100% of the contaminants and dissipates electrical shaft voltages caused by variable frequency drives (FVD).

 

 

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