Feature (Product Specifications)

The SUNGOOD TECH reinforced four-wing arc PDC bits are a hard-rock-focused mining bit series that uses an upgraded matrix body material combined with an arc crown profile for stability in challenging formations.  

Four blades carry PDC cutters in staggered rows with tungsten carbide backup buttons behind each primary cutter position. Cutter sizes available: 1313 series (13mm) or 1610 series (16mm) depending on bit diameter. Bit diameter range: 94-170mm Weight varies by diameter from 3.5 kg (94mm) to 8.0 kg (170mm). 

Advantage (Performance Advantages)

The reinforced body construction addresses the two most common failure modes of standard mining PDC bits in hard rock: body cracking and gauge erosion. The 8% cobalt matrix provides approximately 25-30% higher fracture toughness than standard 6% cobalt bodies, delaying crack initiation at blade roots from typical onset at 200-350m to 500-800m in hard formations at 55-80 MPa. The additional tungsten carbide wear pads at the gauge zone prevent the rapid gauge wear that causes hole undersizing in abrasive formations with quartz content exceeding 30%. The arc profile contributes to stability by engaging the hole bottom progressively rather than the full-face impact that flat-profile bits experience, reducing torsional vibration amplitude by 30-40% compared to flat profiles in the same formation. This lower vibration reduces fatigue loading on both the body and the cutters, extending the life of both components. The backup buttons behind primary cutters provide a secondary cutting surface when the primary cutter chips or wears past its effective depth, preventing sudden ROP loss and extending the useful cutting life by 15-20%.

Benefit (Customer Benefits)

For mining operations drilling in hard, abrasive, or fractured rock where standard bits require frequent replacement, the reinforced arc bit reduces total drilling cost per meter by combining longer body life, better gauge retention, and more consistent ROP. The practical benefit is fewer bit changes and less downtime per borehole meter. In hard rock mining at 55-80 MPa with moderate quartz content, standard four-wing arc bits typically achieve 250-400m per run before body cracking or severe gauge wear. The reinforced version extends this to 500-800m, cutting bit changes per 1,000m borehole from 3-4 to 1-2. Each eliminated bit change saves 3-5 hours of rig time for rod tripping and bit handling. For a mining program drilling 5,000m per month, the reinforced bit saves 15-30 hours of rig time and reduces annual bit procurement costs by 40-50% compared to standard bits. The better gauge retention also means fewer boreholes require reaming before casing or equipment installation.

Evidence (Field Proven Results)

A metal mine in Gansu Province drilling 113mm exploration boreholes in diorite and granite (55-80 MPa, 25-35% quartz content) tested the SUNGOOD TECH reinforced four-wing arc PDC bit against their standard four-wing arc bits over 6 months and 10,000m of drilling. The reinforced bit averaged 620m per run versus 310m for the standard bit, a 100% improvement. All standard bit retirements involved either body cracking (60%) or severe gauge wear (40%); the reinforced bits showed neither failure mode, with cutter wear as the sole retirement criterion. Gauge loss after 600m averaged 0.8mm for reinforced bits versus 2.4mm for standard bits. Total bit consumption dropped from 32 to 16 bits, and total drilling cost per meter decreased by 42%. The mine reported that borehole deviation also improved from 1.2 degrees to 0.5 degrees per 50m, attributed to the arc profile's better stability and the backup buttons maintaining consistent gauge contact. For operations requiring enhanced body durability at the largest diameter in the range, the Factory 170mm Enhanced Four wings Arc PDC Bits 1610 PDC Cutters provides the 170mm enhanced four-wing arc PDC bit with 1610 cutters and 8% cobalt matrix body for heavy-duty hard rock applications.