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发表于 2009-6-18 18:28:56
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roller block junior还有HDSE特别版
HDSE stands for "Heavy Duty Special Edition" but it could also stand for "High Definition Special Edition." HDSE is identical in size and form to standard Rollerblock Jr. but has the following enhancements:
1) Top grade 7075 "aircraft" aluminum alloy body (7075顶级航空铝合金)
7075 aluminum is harder than some steels and provides superior Brinnelling capacity (resistance to denting and deformation under extremely severe conditions) and superior mechanical coupling over 6061 aluminum.
2) Special "Hard Coat" anodized body and cup area (表面阳极硬化特殊处理)
Hard Coat anodizing provides a thin, precision skin of ceramic hardness which constrained-layer damps the HDSE body, as in Rollerblock Series 2, and also retards wear in the cup area.
3) High precision Grade 10 Tungsten Carbide balls standard (10级高精密钨碳钢珠)
Tungsten Carbide is the best material for use in ball bearing isolation devices; Grade 10 means that each ball meets or exceeds a sphericity and diameter tolerance of 10 parts per million, which is 2.5 times better than the best "off the shelf" ball bearings available. These are the same super-precision balls that are supplied with Series 2+ Rollerblocks, and are only bettered by the Grade 3 Superball (see below).
[ 本帖最后由 bruceshen 于 2009-6-18 18:31 编辑 ] |
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