RINGS & BALLS SAE-52100 vacuum degassed,high carbon,chromium bearing steel is the standard material for precision bearing rings and balls.ln applications where a comosive environment may be present,We recommend the use of AISI-440C martensitic stainless steel.440C is designated by an"s"prefix in our part numbers. | Steel No SAE 52100 | Chemical composition% | C | Si | Mn | P | S | Cr | Mo | 0.98-1.1 | 0.15-0.3 | 0.25-0.45 | <0.025 | <0.025 | 1.3-1.6 | -- | | Steel No AISI-440C | Chemical composition% | C | Si | Mn | P | S | Cr | Mo | 0.95-1.2 | <1.0 | <0.1 | <0.04 | <0.03 | 16-18 | <0.75 | | | RETAINERS NWH standard bearing retainers are made from cold rolled carbon steel however,in cases of corrosive environment,misalignment,or high speed operation,stainless steel,nylons,or phenolic resins will be used upon request. | Sheet Steel No | Chemical composition% | JISG 3141 SPCC | C | Si | Mn | P | S | Cr | Mo | <0.12 | --- | <0.5 | <0.04 | <0.045 | --- | --- | SEALS & SHIELDS NWH shields also employ steel as standard, and the option AISI-300 stainless steel is available when needed.NWH uses a variety of sealing materials to meet the requirements of high temper-ature operation and compatibility with greases.Buna Nitrle is the standard material used,while fluorocarbon,silicon,and teflon seals are commonly specified for high temperatures. LUBRICANTS NWH standard greases are supplied with shielded or sealed bearings as standard.Different types oil lubricants can be supplied upon request and are standard for open bearings. | |
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