Microscope Plain Bearing Bush , 20 X 25 mm Aluminum Stepped Linear Bushing Bearings
Basic description
Aluminum linear bushing is black oxidized with bright surface treatment , stepped sections and inside threads that to connect threaded part , upper blank hole is used to supporting shaft pin .
Material
Knurled bush is made of aluminum 5052
Finish
Black oxidation
Specification
| Length |
25 |
| Outside diameter |
20 |
| Inside diameter |
15 |
| Thickness |
2.5 |
| Thread |
M16 |
| Chamfer |
0.5 x 45° |
Unit : mm
Tolerance
Normal tolerances are ±0.1 mm , and ISO 2768 for unmarked tolerances with level f ,m etc .
Linear tolerance
| Level |
0.5-0.3 |
3-6 |
6-30 |
30-120 |
120-400 |
400-1000 |
1000-2000 |
| f |
±0.05 |
±0.05 |
±0.1 |
±0.15 |
±0.2 |
±0.3 |
±0.5 |
| m |
±0.1 |
±0.1 |
±0.2 |
±0.3 |
±0.5 |
±0.8 |
±1.2 |
| c |
±0.2 |
±0.3 |
±0.5 |
±0.8 |
±1.2 |
±2 |
±3 |
| v |
- |
±0.5 |
±1 |
±1.5 |
±2.5 |
±4 |
±6 |
Unit : mm
Verticality tolerances
| Level |
0-100 |
100-300 |
300-1000 |
1000-3000 |
| H |
0.2 |
0.3 |
0.4 |
0.5 |
| K |
0.4 |
0.6 |
0.8 |
1 |
| L |
0.6 |
1 |
1.5 |
2 |
Flatness tolerance
| Level |
0-10 |
10-30 |
30-100 |
100-300 |
300-1000 |
| H |
0.02 |
0.06 |
0.1 |
0.2 |
0.3 |
| K |
0.05 |
0.1 |
0.2 |
0.4 |
0.6 |
| L |
0.1 |
0.2 |
0.4 |
0.8 |
1.2 |
Applications
Aluminum stepped bushing is used to precise Microscope.
Features
★ Bright surface with black oxidation
★ No burrs and sharp edges
★ Resistant corrosion
★ Light weight and small volume
★ Hard material and wear resistance
★ Strict tolerances
★ High precision
Mechanical Property
| Tensile strength σb (MPa) |
200 |
| Yield Strength σs (MPa) |
70 |
| Elongation δ 0.2 (%) |
5 |
Physical Performance
| Fusing point(℃ ) |
550 |
| Specific heat capacity(0~100℃,KJ·kg-1K-1) |
0.083 |
| Heat conductivity(W·m-1·K-1) |
35 |
| Resistivity(20℃,10-6Ω·m) |
0.05 |
Chemical Elements
| Cu |
Zn |
Mg |
Fe |
Mn |
Cr |
Si |
Al |
| 0.1 |
0.1 |
2.5 |
0.4 |
0.1 |
0.2 |
0.25 |
balance |
Packing
① Packed in poly bag , one piece each bag .
② Packed in tissue paper wrapped
③ Customized package from you
Bush materials we provide
We provide different materials for different bushes request , normal materials as following
Stainless steel : SUS 201 , SUS303 , SUS 304 ,SUS 316 , SUS 416 ,SUS 430.
Carbon steel : 1008 , 1010 , 1018 , 1022 , 1035 , 1045
Aluminum : 2024 , 6061
Brass : CuZn35 , CuZn37 , CuZn40 , CuZn37Pb1 and CuZn39Pb1
Copper : C11000 , C31000
Please contact us for more information about bushes via email for phone .
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