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SB-DX bearing, bronze and POM lined, marginally lubricated, ISO3547, metric and inch size
Sintered POM and Bronze Powder on Steel Backing
POM + SIntered Bronze Powder + Steel Backing + Copper / Ting-plating
Features
Sinobronze DX bearings are suitable for rotating and oscillating movement, less maintenance requirements due to the long re-lubrication intervals, lower wear, lower susceptibility to edge loading, no absorption of water and therefore no swelling, good damping behaviours, good resistance to shock loads.
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Structures
1.POM with MoS2 thickness 0.30~0.50 mm, it provides high wear resistance and low friction even with only minute volume of lubricant are supplied, this bearing surface carries a pattern of circular indents which should be filled with grease on assembly of the bearing.
2. Sintered bronze powder thickness 0.20-0.35mm, provides max. thermal conductivity away from the bearing surface, also serves as a reservoir for the resin mixture.
3. Low-carbon steel, provides exceptionally high load carrying capacity, excellent heat dissipation.
4. Copper/Tin plating thickness 0.002mm, provides good corrosion resistance.
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Technical Data of SB-DX materials
| Data |
Types |
SB- DX
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DX -SB1
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DX -SB2 |
DX -SB3 |
SB- HIEX |
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With Lead
or Without Lead
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No oil pockets
& Without Lead
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Bronze Backing
& Without Lead |
Blue Lining
& Without Lead |
High Temperature
& Without Lead |
| Materiai |
Steel + Bronze + POM (+Pb) + MSo2 |
Steel+ Bronze + POM + MSo2 |
Bronze + Bronze + POM + MSo2 |
Steel+ Bronze + POM + MSo2 |
Steel + Bronze + (PTFE+PEEK) |
Typicai
application |
It's used in many places of Vehicle/Automotive, Building equipment, Agricultural equipment,
Machine tooling building industry, forming machine tools, steel metallurgical machinery, mineral mountain machinery,
hydraulic industry and rolling steel industry, etc. |
High temperature condition like high-pressure gear pump, water injection pump, hydraulic motor and spray painting food processing. |
| Max. Loading P |
Static load
N/mm² |
250 |
250 |
250 |
250 |
250 |
| Very low speed N/mm² |
140 |
140 |
140 |
140 |
140 |
| Dynamic load N/mm² |
70 |
70 |
70 |
70 |
70 |
| Max.Speed Vm/s |
Grease
Lubrication |
2.5 |
2.5 |
2.5 |
2.5 |
2.5 |
| Max.PV limit |
3 |
3 |
3 |
3 |
3.6 |
| Friction coef u |
0.05~0.20 |
0.05~0.20 |
0.05~0.20 |
0.05~0.20 |
0.03~0.20 |
| Mating Axis |
Hardness (HB) |
>270 |
>270 |
>270 |
>270 |
>270 |
| Roughness (Ra) |
0.4~1.25 |
0.4~1.25 |
0.4~1.25 |
0.4~1.25 |
0.4~1.25 |
| Temperature Range ( ℃) |
-40~+120 |
-40~+120 |
-40~+120 |
-40~+120 |
-150~+250 |
| Thermal conductivity (W/mk﹣¹) |
50 |
50 |
65 |
50 |
50 |
| Coefficient of linear expansion |
11×10-6K |
11×10-6K |
11×10-6K |
11×10-6K |
11×10-6K |
| Outside Surface Plating |
copper/tin |
copper/tin |
No copper/tin |
copper/tin |
copper/tin |
| * Initial pre-lubrication at assembly is strongly recommended. |
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Typical Applications
Recommended for applications involving intermittent operation or boundary lubrication...
Automotive: suspension joints, kingpin assemblies and stub axles of tucks, automobile driving joint hinges, steering and other linkages, articulation joints, rear chassis hinges, fair leader rollers...
Machine tool building industry: spindles in drill, grinding, and milling machines, ram guide plates in multi-ram presses...
Agricultural equipment: gearbox, clutch, bale trips and wheel caster swivels for bale accumulators, front axle pivot bearings, steering idler box bearings and kingpin bearings for harvesters... It is especially well-suited for applications where lubricant can not be supplied continuously or repeatedly.
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Other Standard DX Shapes
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