Carbide Cutter Bits for Rotary Drilling

Carbide Cutter Bits — Rotary & DTH Drilling Supplier

Ruixin carbide cutter bits are cemented tungsten carbide inserts for rotary drilling rigs, DTH (down-the-hole) hammer bits, and foundation engineering applications. The tungsten carbide tip is engineered to penetrate medium-hard to hard ground formations while maintaining dimensional stability under rotary cutting loads. Manufactured at our 14,200m² ISO-certified facility in Jinan, Shandong.

Quick Grade Selection by Application

Application	Grade	Key Advantage
Impact bit / DTH bit — medium/hard rock	SS12C	HRA 90.0 — highest hardness in the series
Percussive rotary, oil well bit inserts	SS16C	Wear resistance + toughness balance for rotary percussive
Mining bit, roller bit	SS20C	High TRS ≥2800 MPa for impact-heavy applications
Shield machine / engineering pick	SS16CB / SS18CB	Coarser grain 4–6μm for high-toughness cutting

Full Grade Specifications

Grade	Density (g/cm³)	Hardness (HRA)	TRS (MPa)	Grain (μm)	Application
SS12C	14.95±0.05	90.0±0.5	≥2900	2.0–2.4	Impact bit, spherical bit, DTH bit
SS16C	14.70±0.05	88.5±0.5	≥2600	2.4–3.2	Percussive rotary drilling, oil well bit
SS20C	14.50±0.05	87.5±0.5	≥2800	2.4–3.2	Mining bit, roller bit
SS16CB	14.70±0.05	87.5±0.5	≥2200	4.0–6.0	Shield machine cutter head, engineering pick
SS18CB	14.60±0.05	87.0±0.5	≥2400	4.0–6.0	Shield machine cutter head, engineering pick
SS20CB	14.50±0.05	86.5±0.5	≥2600	4.0–6.0	Shield machine cutter head, engineering pick
SS15CT	14.77±0.05	86.5±0.5	≥2800	8.0–8.5	Heavy-duty shearer & roadheader
SR11C	14.35±0.05	87.0±0.5	≥2400	2.4–3.2	Large rock drill alloy head

Custom alloy composition available. Send ground conditions and rig model for grade recommendation.

Why Ruixin

• ISO-certified manufacturer — 14,200m² facility, Jinan, Shandong, China
• 12+ years cemented carbide production, 500 tonnes/year capacity
• Compatible with Bauer, Liebherr, Soilmec and other major rig platforms (custom shank dimensions)
• Material test reports with every shipment
• OEM custom shank diameter, tip geometry to drawing
• Sample orders accepted before bulk supply commitment

Request a Quote

Send your rig model, ground conditions, and current bit specifications to info@ruixintungstencarbide.com or WhatsApp +86-15253178777. Response within 24 hours.

Frequently Asked Questions

What is the difference between DTH cutter bits and rotary drilling cutter bits?

DTH (down-the-hole) cutter bits operate under percussive impact from a hammer driven by compressed air, requiring high hardness (HRA 88–90) and fracture resistance. Rotary drilling bits use continuous rotation with applied weight, requiring a balance of wear resistance and toughness. We supply grades optimized for both — SS12C for DTH hard rock and SS16C/SS20C for rotary percussive applications.

Can your cutter bits be made compatible with Bauer or Liebherr rotary drilling rigs?

Yes. We manufacture cutter bit carbide inserts to custom shank dimensions, tip profiles, and brazing surfaces compatible with major rig platforms including Bauer, Liebherr, Soilmec, and other European and Chinese manufacturers. Send your existing bit drawing or worn sample for a compatibility quotation.

What is the MOQ and lead time for rotary drilling cutter bits?

Sample orders of 20–50 pieces per grade are accepted. Bulk orders typically start from 500 pieces. Lead time is 5–7 days for samples and 3–5 weeks for production quantities.