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Symmetrix Concentric
Our Symmetrix Concentric product line represents the proven standard in precision drilling bit technology, delivering exceptional performance through symmetrical concentric cutting geometry optimized for reliability and consistent hole quality. Symmetrix Concentric bits utilize balanced, concentric cutting patterns that maintain precise bore geometry and dimensional accuracy across diverse rock formations. Available in multiple sizes (76mm to 610mm) with configurations optimized for specific drilling rigs and impactor types, our Symmetrix bits provide drilling contractors with proven, field-tested performance—the reliable choice for projects where drilling predictability and hole quality are paramount. The comprehensive range below helps you select the ideal Symmetrix Concentric configuration for your specific drilling rig, rock conditions, and operational objectives.
| Specification | Follow up Outer Diameter (mm) | Follow up Inner Diameter (mm) | Follow up Wall Thickness (mm) | Center drill Head Large outer diameter (mm) | Perforated drill size (mm) | After pass boarded drill Head max (mm) | Type of impactor / rock drill | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| R76/7-39 | 76 | 62 | 7 | 57 | 84 | 39 | R32 | 3.2 |
| R89/8-58 | 89 | 73 | 8 | 70 | 96 | 58 | T38 | 5.8 |
| R114/9-80 | 114 | 94 | 10 | 92 | 122 | 84 | T45 | 7.5 |
| R127/10-90 | 127 | 107 | 10 | 105 | 136 | 90 | T45 | 10 |
| R140/10-97 | 140 | 120 | 10 | 116 | 148 | 97 | T45,T51 | 15 |
| Specification | Follow up Outer Diameter (mm) | Follow up Inner Diameter (mm) | Follow up Wall Thickness (mm) | Center drill Head Large outer diameter (mm) | Perforated drill size (mm) | After pass boarded drill Head max (mm) | Type of DTH Impactor | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| R114/9-80 | 114 | 94 | 10 | 10 | 92 | 80 | COP34/DHD3.5/TH3.5 | 10 |
| R127/10-90 | 127 | 107 | 10 | 10 | 105 | 90 | COP34/DHD3.5/TH3.5 | 16 |
| R140/10-97 | 140 | 120 | 10 | 10 | 116 | 97 | COP44/DHD340(TH4)/SD4/QL40 | 21 |
| R146/10-110 | 146 | 126 | 10 | 10 | 124 | 110 | COP44/DHD340(TH4)/SD4/QL40 | 22 |
| R168/127-125 | 168 | 142.6 | 12.7 | 12.7 | 141 | 125 | COP54/DHD350(TH5)/SD5/QL50/M50 | 27 |
| R178/127-135 | 178 | 152.6 | 12.7 | 12.7 | 150 | 135 | COP54/DHD350(TH5)/SD5/QL50/M50 | 32.5 |
| R194/127-145 | 194 | 168.6 | 12.7 | 12.7 | 166 | 145 | COP64/DHD360(TH6)/SD6/QL60/M60 | 42.5 |
| R219/127-170 | 219 | 193.6 | 12.7 | 12.7 | 191 | 170 | COP64/DHD360(TH6)/SD6/QL60/M60 | 58 |
| R245/127-195 | 245 | 219.6 | 12.7 | 12.7 | 214 | 195 | COP84/DHD380(TH8)/SD8/QL80 | 78 |
| R254/127-203 | 254 | 228.6 | 12.7 | 12.7 | 224 | 203 | COP84/DHD380(TH8)/SD8/QL80 | 84.5 |
| R273/127-223 | 273 | 247.6 | 12.7 | 12.7 | 241 | 223 | COP84/DHD380(TH8)/SD8/QL80 | 100 |
| R325/127-276 | 325 | 299.6 | 12.7 | 12.7 | 292 | 276 | COP84/DHD380(TH8)/SD8/QL80 | 135 |
| R406/127-350 | 406 | 380.6 | 12.7 | 12.7 | 377 | 350 | DHD112/12(TH12)/QL120/SD12/NUMA120 | 280 |
| R508/127-416 | 508 | 482.6 | 12.7 | 12.7 | 478 | 416 | QL200/SD18/NUMA180/TH18 | 522 |
| R560/127-475 | 560 | 534.6 | 12.7 | 12.7 | 528 | 475 | QL200/SD18/NUMA180/TH18 | 620 |
| R610/127-513 | 610 | 584.6 | 12.7 | 12.7 | 558 | 513 | QL200/SD18/NUMA180/TH18 | 710 |
Our engineering philosophy is straightforward: deliver proven, field-tested drilling performance through balanced symmetrical design. Every Symmetrix bit is engineered for precision, reliability, and consistent hole quality that drilling contractors depend on for mission-critical operations.
Balanced cutting pattern ensures uniform cutting stress distribution. Delivers predictable, consistent drilling performance across all rock types and formations.
Concentric cutting pattern maintains precise bore diameter and straightness throughout drilling operations. Superior hole quality reduces deviation and drilling complications.
Field-tested design with decades of global drilling experience. Consistent performance in diverse conditions—the trusted choice for critical drilling operations.
Strategically positioned buttons deliver aggressive rock destruction with maintained precision. Balances penetration rate with hole quality and gauge control.
Available for both rock drilling rigs and DTH impactor systems. Seamless integration with existing equipment ensures maximum deployment flexibility.
OEM-quality construction at competitive Chinese factory pricing. Reliable performance and consistent hole quality reduce drilling complications and project costs.
Symmetrix bits feature balanced, concentric cutting patterns where cutting elements are positioned symmetrically around the bit center. This balanced geometry ensures uniform load distribution during drilling, eliminating stress concentrations that cause premature failures. Uniform stress distribution reduces vibration, delivers smoother drilling action, and maintains consistent drilling speed across diverse rock types. Result: predictable drilling performance, extended tool life, and reduced drilling complications compared to designs with unbalanced or eccentric element positioning.
Concentric bit geometry maintains precise bore diameter and straightness throughout drilling operations. The symmetrical cutting pattern ensures balanced cutting forces that resist hole deviation, particularly important in deep drilling where even small deviations accumulate quickly. Superior hole quality reduces drilling complications, minimizes deviation correction requirements, and enables drilling to greater depths without sidetrack risk. Precision bore control is essential for projects where hole quality specifications are critical.
Symmetrix bits represent proven, field-tested drilling technology refined over decades of global operational experience across diverse geological conditions, drilling systems, and climates. This extensive real-world validation ensures predictable performance and exceptional reliability for mission-critical drilling operations where drilling failures create significant cost impacts. Drilling contractors trust Symmetrix for critical projects because the proven design consistently delivers expected results. The track record of reliability makes Symmetrix the conservative choice for drilling operations where drilling predictability is paramount.
Symmetrix bits feature premium-grade tungsten carbide cutting buttons strategically positioned to deliver aggressive rock destruction while maintaining precise bore geometry. Button sizing, hardness, and positioning are optimized through extensive field testing to balance drilling speed with hole quality and gauge control. This engineered balance ensures fast drilling speed without sacrificing the precision hole quality required for successful well completion and equipment compatibility.
MSD offers Symmetrix bits engineered for both drilling system types: standard configurations for rock drilling rigs with rotary capacity, and DTH-integrated Symmetrix bits compatible with percussive impactors. This flexibility enables drilling contractors to deploy Symmetrix technology on existing equipment without capital investment in new rigs. Simple tool changes adapt Symmetrix bits across rock drilling and percussive drilling systems, maximizing equipment utilization across diverse project types.
MSD delivers OEM-quality Symmetrix bits at competitive Chinese factory pricing. Proven reliability and consistent hole quality reduce drilling complications, unexpected failures, and associated remedial costs. For drilling contractors managing multiple projects where drilling predictability directly impacts profitability, Symmetrix's proven performance delivers superior cost-per-meter economics through reduced complications and consistent operation.
Years Field-Proven Design
Size Options Available
Reliable Performance
APPLICATIONS
CASE STUDIES
MSD Concentric Casing System achieved 100% hole completion across 36 water wells in South
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MSD T51-115mm thread button bit achieved 25% faster drilling and 30% longer life at Austra
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MSD DTH hammer + drill pipe system achieved 24% faster drilling and 26% lower cost at Braz
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MSD QL60-178 DTH bit achieved 340m per bit and 35% lower drilling cost in Russian hard roc
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MSD custom 500mm DTH bit achieved zero structural failures and 40% efficiency gain in Taiw
Read MoreA Symmetrix Concentric bit represents the proven standard in percussion drilling bit technology, delivering predictable, field-tested performance through balanced symmetrical concentric cutting geometry. These specialized bits maintain precise bore accuracy, consistent hole quality, and reliable drilling speed across diverse rock formations. As a leading manufacturer in China with over two decades of expertise, MSD has perfected the design and production of Symmetrix concentric bits serving water well drilling, mining exploration, geothermal operations, foundation piling, and critical infrastructure projects globally. Our expertise ensures every Symmetrix bit we produce delivers proven reliability, consistent hole quality, and exceptional performance across 50+ countries.
The performance of any Symmetrix concentric bit depends on the synergy between three critical elements. Symmetrical geometry creates balanced cutting patterns where all cutting elements are positioned concentrically around the bit center, ensuring uniform load distribution and predictable drilling behavior. Balanced cutting elements deliver consistent rock destruction across all drilling directions, eliminating the stress concentrations and vibration that cause premature failures in unbalanced designs. Precision engineering ensures exact element positioning, cutting surface geometry, and bore calibration, enabling the bit to deliver reliable, predictable performance across diverse rock types without surprising drilling behavior. Together, these elements create a drilling bit that delivers proven, field-tested performance drilling contractors depend on for mission-critical operations.
Optimal Symmetrix bit deployment requires matching the bit configuration to your specific drilling system. Standard Symmetrix bits are engineered for conventional rock drilling rigs with rotary capacity—these systems use surface rotation combined with symmetrical bit geometry to deliver reliable drilling performance. DTH-integrated Symmetrix bits are engineered for percussive drilling systems with DTH impactors—these configurations deliver symmetrical concentric drilling capability on deep-hole percussion drilling rigs. Symmetrix bits are available across 16+ size options (76mm to 610mm) spanning compact rigs through large-scale production systems. Proper system matching ensures optimal performance, reliable operation, and superior cost-per-meter economics. Our technical team maintains comprehensive compatibility databases and can recommend optimal Symmetrix specifications for your specific drilling rig, formation conditions, and operational objectives. The choice between rock drill and DTH configurations determines cutting action, drilling speed, and optimal application range—consult with our engineers for precise recommendation matching your equipment and drilling objectives.
Beyond manufacturing, we provide complete Symmetrix concentric drilling solutions. Our technical team conducts detailed drilling requirements analysis—formation geology, drilling depth, existing equipment specifications, hole quality requirements—to recommend optimal Symmetrix configurations that deliver maximum performance and cost-per-meter efficiency. By optimizing Symmetrix selection for your specific conditions, we help you achieve consistent drilling speed, superior hole quality, minimize drilling complications, and reduce consumable costs through proven reliability. With inventory spanning 16+ size options, both rock drill and DTH-impactor configurations, and cutting element patterns optimized for specific applications, combined with agile production capability, we ensure your project stays on schedule without delays. MSD delivers OEM-quality Symmetrix concentric bits at competitive Chinese factory pricing, backed by technical support and proven reliability delivering predictable drilling performance across diverse geological conditions and drilling systems. Trust MSD for drilling bits and expert partnership that maximize your drilling reliability, operational predictability, and project profitability.
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