LM76 has developed corrosion resistant linear bearings. In space, deep under the sea, or in the harshest environments when there can be no "Plan B," Pegasus Series 1 Linear Ball Bearings can be counted on to perform. In some applications linear bearings will not move for days, weeks, months or even years, however, when called on to perform they must work as if they just came out of the box. LM76's Pegasus Series 1 Linear Bearings feature Silicon Nitride (SiNi) Ceramic Balls in a shell with retainer and end caps all made from 440 Stainless Steel and then ArmorloyTM coated.
Silicon Nitride was selected for the balls because it is: 40 percent lighter than steel, inert to chemicals (vapors, sea water, caustic washing and sterilizing solutions), capable of higher speeds and higher loads: (RC78 hardness), FDA compliant (used in surgical instruments), and does not corrode or support electrolysis.
The shell, bearing retainer and end caps are made from 440 Stainless Steel and coated with Armoloy TDCTM (Thin Dense Chrome). Armoloy is a hard (78Rc), coating with a micro-nodular surface texture. The coating's nodular finish reduces the amount of surface area in contact with the SiNi balls reducing friction and extending life.
Pegasus Linear Bearings are available in two series (closed and open), and in four sizes (1.000", 1.250", 1.500" and 2.000"). Dynamic load rating for these bearings are: 1.000" 220 lbs, 1.250" 352 lbs, 1.500" 490 lbs, and 2.000" 858 lbs. Bearings are designed for zero clearance on Class L linear shafting. For maximum performance they recommend LM76 Case Hardened 440 Stainless Steel shafting with Armoloy coating.
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