This type consists of a metal cap and synthetic rubber seal, which are baked together to form a single seal. Seal lips have enough tightening allowance. In addition, the lip layers are of triple construction and outside matters, such as dust, water, etc., are shut out. This sealing system shows its outstanding function under bad conditions.
The UC insert can be ordered with a triple lip seal by using a suffix L3 or R3 as designation, eg: UC205 L3 or UC205 R3
The UCX insert can be ordered with a triple lip seal by using a suffix L3 or R3 as designation, eg: UCX05 L3 or UCX05 R3
The NA insert can be ordered with a triple lip seal by using a suffix L3 as designation. eg: NA205 L3 or NA205 R3
The SUC insert can be ordered with a triple lip seal by using a suffix L3 as designation. eg: SUC205 L3 or SUC205 R3
The SNA insert can be ordered with a triple lip seal by using a suffix L3 as designation. eg: SNA205 L3 or SNA205 R3
This type encloses a synthetic rubber washer between two metal shields. Due to the three pieces designwith protective outer shroud,the sealing is excellent.
For applications that require bearing units to be used at a higher or lower temperaturerange than our standard models,LDK offers several options. The standard operatingtemperature is -20°C~+120°C. LDK offers product and solutions for application withmaximum high temperature to 200°C and low temperature to -40°C. Main features areas follows.
High/Low Temperature grease
Soap/Fluoride based, maximum operating temperatures of the grease at 200*CSynthetic polyurea grease,low operating temperatures of the grease at -4O"C
Internal Clearance
In the manufacturing of ball bearings, it's a standard practice for LDK assemble its rings and balls with aspecified interal clearance, in the case of high-lemperature inserts, internal clearance is even more importantin compensating for thermal expansion of bearings, shafts, and housings. LDK uses an intermal clearancestandard of C4 on all of its high temp inserts.Fow low temperature inserts,C0 is recommended.
Silicon Rubber Seals
Most slandard units are supplled with a nitrile rubber seal, Nitrile rubber is an excellent seal at temperaturesranging from 0-100*C.Soon after that temperature, nitrile rubber starts to breakdown, leaving no sealingelement to retain high temperature lubrication. Silicon seals have excellent high temperature stability.exceptional high temperature sticking, resistance to aging, ozone, sunlight and outstanding water repelience.The use of Silicone seals insures that the high temperature lube stays where it belongs, in the bearings!Upon request,flurorine rubber is also available for constant high temperature working environment.
Special fit and alignment torque for high temp
Bearings and housings are individually matched to achievean approperiate fit for high temp application. A unique setof tolerances ensure @ase of alignment.
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