The MR-3 trademark identifies a range of bearings composed of a Bronze Stretched metal (CuSn6) within PTFE (polytetrafluoroethylene) loaded with solid lubricants (Without lead, complying with the European Parliament’s “ELV” directive 2000/53/Ec).
The bronze stretched gives the bearings the mechanical strength and the formability required to manufacture the finished parts; the loaded PTFE gives the MR-3 bearings a low friction factor and a high chemical resistance, entirely similar to those features by pure PTFE.
Thanks to their composite structure, the MR-3 bearings provide the best match of mechanical strength, thermal conductivity and low friction factor. The available products are cylindrical and flanged bearings, washers, belts and cast-to-size parts with thickness standard from 0,480 mm, 0,780 and 0,980 (0.019, 0.030 & 0 .039 inch).
- High load capacity
- Easy mounting
- Good chemical inertia to corrosive agents
- High thermal conductivity
- Negligible water absorption
- Wide range of service temperatures
- Minimum overail dimensions and no maintenance
- Special items available on demand
|Maximum Specific Load Static||100 N/mm2 (14500 PSI)|
|Maximum Specific Load Dynamic||80 N/mm2 (11600 PSI)|
|Maximum Sliding Speed||1 m/s (200 fpm)|
|Service Temperature Minimum||-200°C (-328°F)|
|Service Temperature Maximum||+260°C (+500°F)|
|MR-3 Self-Lubricated Bearings | Product Data Sheet|