HTB2 Graphite Bronze Bearing Bushes with HB250+ Hardness and 75MPa Max Load for Heavy-Duty Industrial Applications
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Brand:
Joyreap
Product Description
JDB-10S graphite plugged oilless bronze bearing is manufactured using centrifugal casting of special high-strength brass with graphite filling. The base material hardness exceeds HB250. This self-lubricating bearing is also known as #500 oilless bearing, brass oilless bearing, copper sliding bushing, solid lubricant filled sliding bearing, 500 oilless guide bushing, and graphite filled bearing.
Material Composition
Primary material: CuZn25Al6Fe3Mn3 + Graphite
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Cu | 60.00 | 66.00 |
| Pb | 0.00 | 0.20 |
| Sn | 0.00 | 0.20 |
| Zn | 22.00 | 28.00 |
| Fe | 2.00 | 4.00 |
| Ni | 0.00 | 1.00 |
| Al | 5.00 | 7.50 |
| Mn | 2.50 | 5.00 |
Product Characteristics
- Significantly improves brass base material hardness
- Due to high hardness and processing difficulty, not recommended for applications without particularly high load requirements
Product Availability
- Standard fabrication: cylindrical oilless bushings, flanged oilless bushings, thrust washers, and slide plates
- Custom designs and materials available based on specific requirements
Industrial Applications
JDB-10S high-strength bronze graphite oilless bearings are widely used in continuous casting mills, mining machinery, engineering machinery, and injection molding machinery.
Technical Specifications
| Material | CuZn25Al6Fe3Mn3 |
| Density (g/cm³) | 8 |
| HB Hardness | ≥250 |
| Tensile Strength (MPa) | ≥800 |
| Yield Strength (MPa) | ≥450 |
| Elongation (%) | ≥8 |
| Thermal Expansion Coefficient | 1.9x10⁻⁵/°C |
| Max. Operating Temperature | -40 to +300°C |
| Max. Load (MPa) | 75 |
| Max. Speed Dry (m/s) | 0.1 |
| Max. Speed Lubricated (m/s) | 0.25 |
| Max. PV Dry (N/mm²·m/s) | 1.65 |
| Max. PV Lubricated (N/mm²·m/s) | 3.25 |
International Material Standards
| Common Name | China (GB1176-87) | Germany (DIN) | Japan (JIS) | European (EN 1982) | British (BS 1400) | Italy (JM) | American (ASTM/UNS) |
|---|---|---|---|---|---|---|---|
| Manganese Bronze | ZCuZn25Al5Mn4Fe3 | CuZn25Al5 | CAC304/HBsC4 | HTB2 | JM-18 | C86300 (SAE430B) | |
| Nickel-Aluminum Bronze | CuAl10Ni5Fe5 | G-CuAl10Ni | AlBC3 | CB333G | AB2 | JM7-15 | C95500 |
| Leaded Bronze / Gun Metal | ZCuSn5Pb5Zn5 | CuSn5ZnPb | BC6 / BC6C | CC491K / CB491K | LG2 | JM1-15 | C83600 (ASTM B 505) |
| Leaded Bronze / Gun Metal | ZCuSn7Zn4Pb7 | G-CuSn7ZnPb, RG-7 | CC493K | LG2 | JM-1 | C93200 (SAE660) | |
| Tin Bronze | ZCuSn12 | G-CuSn12 | CAC503B | CC483K / CB483K | PB2 | JM3-15 | C90800 (ASTM B 427) |
| High Leaded Tin Bronze | ZCuSn10Pb10 | CuSn10Pb10-C | CC495K / CB495K | LB2 | JM-15 | C93700 / SAE64 | |
| High Leaded Tin Bronze | CuSn7Pb15 | CuSn7Pb15-C | CC496K | AB2 | JM-4 | C93800 |
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Company
Jiaxing Joyreap Precision Machinery Co.,Ltd
Location
No 168 Kapa Road Dayun Town Jiashan Zhejiang China
Contact Person
Catherine Hu