Single disc cutters are mainly applied to bore in hard rock or mixed ground. Single disc cutters break
rock into chips, rather than crushing it into fines or ripping it from the face. The rotating disc cutters create “crush zones” through which fractures propagate. Chips are then broken away from the face. This action makes single disc cutters excellent in solid rock. Ground conditions determine cutters selection and characters, such as ring material, ring hardness, hub hardness, ring profile and width, cutters starting torque, seal and so on.
To improve ring wear resistance and toughness, ring is made from alloy tool steel and specially heat-treated to reach proper balance of hardness (HRC55-59) and toughness. Tungsten carbide tips will be inserted in ring if cutters are applied in very abrasive ground. To improve boring efficiency, ring is made into different profiles and width for different ground conditions.
To improve hub wear resistance in abrasive ground, hub is heat-treated up to HRC40, or coated wear resistance material in exposed section.
According to working conditions, cutters starting torque is adjusted to proper level (25-50N.m) by preloading in order to rotate freely and prevent them becoming blocked.
To improve sealing ability under high pressure, metal floating seal and anti-dust seal are mounted in cutters. If necessary, the pressure compensated piston will be mounted in shaft, so Lubrication oil will not leak and sand will not permeate, in this way cutters bearing has long lifetime.
Contact Name: Mr. Fu
Company Name: Guangzhou Jiansui Machinery Co., Ltd
Street Address: Room 703, 107 Junjing Lu,
Zhongshan Dadao, Guangzhou, 510655
Member name: jiansuicutters
Member Since: 04 December 2009
Total Leads: 12 jiansuicutters Import Export Business Leads
Business focus: Tbm Disc Cutters, Rock Roller Cutters, Tricone Bits
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