SPM Proven and reliable
The quality and lifetime of the excavation tools have a noticeable effect on tunnelling performance and the economic efficiency of mechanized tunnelling.
Every excavation tool is manufactured complying with highest standards of quality, sustainable use of resources and maximum safety at work. In addition to the certificates ISO 9001, ISO 14001,which have been introduced at all manufacturing facilities, we also hold other technical approvals confirming the high level of safety and quality at SPM.
|Main Beam||Double Shield|
TBM Disc Cutter view
|12", 14", 17", 18", 19", 20"||Single Disk|
|17", 18", 19"||Twin Disk|
|12", 14", 17", 18", 19"||Double Disk|
|10", 11", 12", 14", 17", 18", 19"||Monoblock Single Disk|
|8", 10", 11", 12", 17", 18", 19"||Monoblock Double Disk|
TBM Disc Cutter core material
SPM® Tool Features (Alloys)
General physical and mechanical properties of alloys
|Hardness(HRA)||Density(g/cm3)||Average grain size(µm)||Bending Strength(N/mm2)|
|Market mainstream alloy||86||14||3-4||> 3000|
|SPM alloys||87.6||14.35||>4||> 3235|
Heat transfer properties of alloys
|Heat conductivity coefficient W/m*K||Thrmal diffusion coefficient(mm2/s)||Specific heat capacity J/kg*K|
- Homogeneous organization, stable performance.
- The average grain size alloy is large, which has good thermal conductivity and thermal fatigue resistance.
- Alloys has high hardness, bending strength, abrasion resistance, breaking and impact resistance.
Wear-resistance properties of alloys
|The cobalt content(%)||Weight before grinding(g)||Weight after grinding(g)||Weight loss(g)||Coefficient of wear(%)|
TBM Tools Product
DTH Drill Rigs Introduction
|Product||Product type||Specification and dimension||Selection of the bearing||Operating conditions|
|Hob||Singleedge hob||12", 13", 15", 17", 18", 19", 20",||Timken heavy duty taper roller bearing||Conglomerate, sandstone, granite, argilaceous siltstone, limestone and strata with rock, etc.|
|Doubleedge hob||17", 18"|
|Multi-edge-over cutter||17", 18"|
The ancillary products include: special type cutter ring, insert tooth cutter ring, insert tooth soldering cutter ring, outer soldering cutter ring, surface special hardened cutter ring, steel tooth cutter ring hub, cutter shaft, end cover, ect.
|Product||Product type||Product type||Operating conditions|
|Scraper||Center fishtail scraper, tear scraper. edge scraper, other protective cutters(tool holder protection cutter, tool box protection cutter, panel protection cutter, ect.)||Center fishtail scraper||Sand, pebble, clay and other loose bodies strata with particle size less than 400mm|
|The ancillary products include: scraper, tearing scraper with various alloy blocks, scraper matrix, tearing scraper matrix.|