Having the foresight to use currently available materials in innovative ways has changed product designs throughout history. Opportunities for improvement exist with any design and below are some of the advancements made by introducing new ideas to an existing problem.
Throughout history many major industrial and technological advances have owed themselves to the creative application of a new material to an old problem. Looking back to our earliest advancements, entire periods of human history like The Stone Age and The Bronze Age are known for the material that was commonly applied. Just as the application of papyrus as a medium for capturing written communication (in place of stone or wood) led to transportable and widely available knowledge and information, the application of silicon as a semiconductor has dramatically increased computing capacity and availability in our lifetime. These new applications of available materials and the advancements they supported lead to revolutions in the way humans live and work and are foundational to our way of life today.
Many innovations have been made in bearing applications ranging from deep earth mining to space exploration by putting available materials to use in new ways. From Ceramic to Stellite, Stainless Steel to Sapphire, the problems solved are as diverse as the materials applied. From the wooden roller bearings used by ancient civilizations to the aerospace materials of today, the selection of available materials continues to increase. Will the innovation that changes the rules and competitive landscape in your industry come from you? It may be as simple as applying one of these specialty materials to your challenging problem. What is the challenge in your most difficult application? Corrosion, heat and excessive wear are all factors that existing bearing materials overcome for specific applications. Below is a list of common bearing materials and their basic advantages.
Material
Specification
Features and Advantages
Hardness Rc
Operating Temp. Limit F°
52100
AMS 6444
Low cost and good wear properties
58-65
Up to 400° *
440 C
AMS 5618
Low cost, good wear properties and corrosion resistance
56-62
Up to 825° *
DD 400
N/A
Low cost and premium finish and corrosion resistance
58-62
350°
17-4 PH
AMS 5643
Good machinability, high strength and corrosion resistance
28-42
Up to 572° *
M50
AMS 6491
Excellent fatigue properties and high temperature capabilities
60-64
975°
BG42®
AMS 5749
Corrosion resistance and high temperature capabilities
61-65
950°
Nitrogen enriched steel
AMS 5898
Extreme corrosion resistance
60-64
850°
Cobalt-based alloys
AMS 5759
Chemical resistance and high temperature stability
50 (min.)
1000°
Stellite®
AMS 5894
Corrosion Resistance, good wear properties and high temperature capabilities
33-43
930°
M50 NiL
AMS 6278
Can be carburized, high fracture toughness and high temperature capabilities
Case hardness: 60 (min.)
975°
* Depending on heat treat method BG42 is a registered trademark of Latrobe Steel Company. STELLITE is a registered trademark of DELORO STELLITE COMPANY, INC.
If you have a difficult application or recurring bearing problem please contact your NPB sales rep to discuss a new material solution today.
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