GGB-BP25 Cylindrical bushes
GGB-BP25 METAFRAM Oil Impregnated Sintered Bronze Bearings
CHARACTERISTICS
- Similar to SINT A 50, impregnation group 1
- Maintenance-free bearing for general engineering applications
- Optimum performance under relatively light loads and high speeds
- Produced by powder metallurgy process and therefore suitable for complex shapes
availability
Bearing forms available in standard dimensions- Plain cylindrical bushes
- Plain flanged bushes
STRUCTURE AND COMPOSITION
GGB-BP25 METAFRAM Oil Impregnated Sintered Bronze Bearings
Similar to SINT A 50, Impregnation
Group 1
MICROSECTION
Sn 8 - 10,5 %
Other < 2 %
Cu Rest
Impregnation group 1
(up to 80°C)
| OPERATING PERFORMANCE | |
| Dry | Good (PTFE/MoS2) |
| Oil lubricated | Good |
| Grease lubricated | Fair |
| Water lubricated | Not recommended |
| Process fluid lubricated | Not recommended |
Nothing changes except the name of the GGB bearing material: to better fight against counterfeiting, GGB has changed BP25 (also known as BP 25 or sinterbronze) into GGB-BP25.
BEARING PROPERTIES
| GENERAL | Unit | Value | |
| Maximum load, p |
Static Dynamic |
N/mm2 N/mm2 |
20 10 |
| Operating temperature |
Min Max |
°C °C |
-180 / 0 * 90 / 300 * |
| Minimum density | g/cm3 | 6.2 | |
| Minimum apparent porosity | % | 23 |
| OIL IMPREGNATED | |||
| Maximum sliding speed, U | m/s |
0.1 - 6.0 * |
|
| Maximum pU factor |
|
N/mm2 x m/s |
0.1 - 1.8 * |
| Coefficient of friction f, boundary |
0.05 - 0.25 * |
| Recommendations | |||
| Surface roughness, Ra |
|
µm |
≤ 0.3 - ≤ 0.6 * |
| Surface hardness | HB |
> 240 - > 355 * |
* Bearing properties depending on oil or solid lubricants. This information is available by downloading the GGB-BP25 datasheet or brochure.
STRUCTURE AND COMPOSITION
GGB-BP25 METAFRAM Oil Impregnated Sintered Bronze Bearings
Similar to SINT A 50, Impregnation
Group 1
MICROSECTION
Sn 8 - 10,5 %
Other < 2 %
Cu Rest
Impregnation group 1
(up to 80°C)
| OPERATING PERFORMANCE | |
| Dry | Good (PTFE/MoS2) |
| Oil lubricated | Good |
| Grease lubricated | Fair |
| Water lubricated | Not recommended |
| Process fluid lubricated | Not recommended |
Nothing changes except the name of the GGB bearing material: to better fight against counterfeiting, GGB has changed BP25 (also known as BP 25 or sinterbronze) into GGB-BP25.
BEARING PROPERTIES
| GENERAL | Unit | Value | |
| Maximum load, |
Static Dynamic |
psi psi |
2 900 1 400 |
| Operating temperature |
Min Max |
°F °F |
- 290 / 30 * 190 / 570 * |
|
Minimum density |
|
lb/in3 |
0.22 |
| Minimum apparent porosity | % | 23 |
| OIL IMPREGNATED | |||
| Maximum sliding speed U | fpm |
20 - 1 100 * |
|
| Maximum pU factor |
|
psi x fpm |
2 800 - 51 400 * |
| Coefficient of friction f, boundary |
0.05 - 0.25 * |
| RECOMMENDATIONS | |||
| Surface roughness, Ra |
|
µin |
≤ 12 – ≤ 24 * |
| Surface hardness | HB |
> 240 – > 355 * |
* Bearing properties depending on oil and solid lubricants. This information is available by downloading the GGB-BP25 datasheet or brochure.
