MR-2 Self-Lubricated Bearings
The MR-2 trademark identifies a range of bearings composed of a metal grid housed CuSn6 within PTFE (polytetrafluoroethylene) loaded with solid lubricants (without lead, complying with the European Parliament’s “ELV” directive 2000/53/Ec).
The bronze grid gives the bearings the mechanical strength and the formability required to manufacture the finished parts; the loaded PTFE gives the MR-2 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-2 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).
Operating Conditions
-
DRY -
OIL -
GREASE -
WATER -
PROCESS
FLUID
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Characteristics
- 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
Technical Data
| 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) |