China Rock Auger Bullet Teeth Manufacturer and Supplier
Top Chinese suppliers make strong tools for your hardest jobs. You can get tough cutting tools with pure tungsten carbide tips and alloy steel bodies directly from China. Leading companies like Changzhou Renewal Machinery Co., Ltd. specialize in durable parts for deep drilling and digging projects.
You can choose standard shank sizes like 19mm, 25mm, and 30/38mm. Dependable factories provide different tip shapes for worldwide shipping. Buying directly from a trusted Bullet Teeth Manufacturer lowers your repair costs. Also, custom OEM designs help you work faster and make tools last longer in harsh rock conditions.
Key Takeaways
Pure tungsten carbide tips and shaped metal bodies make rock auger teeth strong and long-lasting.
Matching exact shank sizes ensures proper tool fitting and protects drilling equipment from damage.
Picking matching tooth styles based on rock toughness increases drilling speed and helps tools last longer.
Purchasing straight from leading Chinese sellers reduces fixing expenses and provides personalized equipment options.
Material Specs and Manufacturing Standards
Heavy drilling machines need strong cutting parts that can handle intense rubbing and heavy impacts. Top Chinese factories make great parts by pairing rich materials with strict quality controls. Choosing tools made for tough grounds helps your equipment last longer and work better over time.
100% Virgin Tungsten Carbide Tips
How well your rock auger cuts depends on the quality of the tungsten carbide tip. Great tips use 100% virgin tungsten carbide made from pure ore instead of melted scrap metal. This special material provides superior strength, even grain layouts, and total chemical purity.
Material specification | 100% virgin WC | Recycled WC (high-quality) | Recycled WC (low-quality) |
|---|---|---|---|
WC purity | >99.5% | 98–99% | 95–97% |
Grain size consistency | Uniform, 0.8–2.5 μm | Near-uniform | Irregular |
Hardness (HRA) | 89–92, predictable | 88–91 | 86–90, varies |
Transverse rupture strength (MPa) | 2200–2800 | 2000–2600 | 1600–2200 |
Contaminants (Fe, Ni, Cr) | <0.1% total | 0.1–0.3% | 0.5–2.0% |
Pure tungsten carbide inserts offer the right balance of toughness and wear resistance, hitting 89 to 93 HRA hardness.
Reused tungsten carbide usually has extra metals, tiny holes, and uneven grains that lower impact strength. These weak spots cause tool tips to chip, crack, or snap when striking hard rocks. Pure carbide maintains steady hardness and wear resistance so your drill bits smash solid boulders without breaking unexpectedly.
Forged Alloy Bodies and Heat Treatment
A tough carbide tip needs an equally strong steel body to hold it securely. Producers form the tooth body using heavy-duty forged alloy steel like 42CrMo or ASTM4140. The forging process lines up the metal grain, making the body resist snapping and bending under pressure.
Exact CNC machines cut the tooth holders and bodies to tight sizes from 0.02 mm to 0.1 mm with smooth Ra 1.6 surface finishes. Precise shapes make sure the carbide tip sits neatly in its pocket. Workers then use strong copper brazing to fuse the carbide tip directly onto the forged steel body. This sturdy copper connection takes in heavy shocks and keeps the tip attached during deep drilling jobs.
After brazing, the whole tool goes through a special heat treatment step. This thermal heating hardens the forged alloy steel body to an exact level of 38–45 HRC.
Custom heat treatments build a hard outer layer to block heavy scratching from abrasive dirt and stone dust.
Strong inner steel keeps the tool shank from twisting apart or breaking under massive turning forces.
Balanced strength stops early body wear, which protects the steel pocket that locks the carbide tip in place.
As a top Bullet Teeth Manufacturer, Changzhou Renewal Machinery Co., Ltd. runs every task under careful ISO9001 quality rules. Smart machines and strict test checks stop hidden flaws across all built product batches. Their factory maintains a production success rate over 98%. This high success rate ensures you get dependable cutting components for your heavy trenching and foundation drilling machines.
Shank Sizes and Rig Compatibility
You need the correct shank size to keep your foundation drilling rig working smoothly. Matching your cutting tools to your auger pocket prevents unexpected downtime. Bullet teeth come in specific dimensions to handle different torque levels.
Standard Diameters and Retainer Types
You can select bullet teeth based on exact shank measurements for your project requirements. The B47K series provides specific shank diameter variants for foundation pile drilling rigs.
Model | Shank diameter (mm) |
|---|---|
B47K17.5H | 17.5 mm |
B47K19H | 19 mm |
B47K22H | 22 mm |
Retainer systems hold the tooth securely inside the block during rotation. The B47K19H model features a 19 mm carbide-tip diameter on a 30 mm shank. B47K series tools use a standard circlip retainer, while premium versions offer an optional spring.
Shank size | Bullet-tooth series / finding | Retainer type |
|---|---|---|
25 mm shank | C31HD series | Friction fit |
30 mm shank | B47K and BK series | Circlip, optional spring, or spring clip (BK47/BKH47) |
38 mm shank | Heavy-duty / custom | Custom fit |
Compatibility With Major Rig Brands
You can easily fit Chinese rock auger bullet teeth onto major global machinery. Manufacturers engineer these round-shank cutting tools for direct mounting on foundation drilling augers and buckets.
ZOOMLION foundation drilling rigs
Sany foundation drilling rigs
XCMG foundation drilling rigs
You can choose 30/38 mm step shank tools to replace standard industry components seamlessly across various tool systems.
Shank size | Compatible codes/brands |
|---|---|
30/38 mm step shank | Kennametal DS01–DS05; Betek B47K22H, B47K19H, B47K17.5H, BKH28, BKH40, BKH41, BKH47, BKH81; Bauer C403, C402 |
Precise fitting protects your tool holders from heavy shaking and early steel body wear. You maintain continuous field productivity by pairing your machine with properly fitted replacement bits.
Matching Teeth to Rock Formations
Tools for Soft to Medium Strata
You pick bullet teeth using precise ground conditions to boost cutting productivity. Soft clay, gravel, and medium shale need fast drilling without huge turning force. You maintain high drilling speeds by selecting light cutting tools with smooth tip shapes. Picking the right tool stops extra wear on your auger parts.
Soft soil types do not need heavy carbide tips to get great drilling speeds. Simple pointed carbide tips cut easily through soft soil and mud without wearing down fast. Lighter tools help your drill rig turn quickly while saving your truck fuel. You boost daily work output by using lighter bits in soft soil.
Heavy-Duty Bits for Hard Rock and Concrete
Hard rock layers and steel-reinforced concrete create severe impacts during drilling work. You need thick carbide tips with strong steel bodies to break tough boulders easily. Stronger tool bodies absorb heavy hits and prevent your cutting tips from cracking suddenly. Wide carbide shapes stop early body wear in rough, scraping soils.
You match your bit style directly to the rock hardness score measured in megapascals (MPa). Correct strength matching keeps your equipment safe from sudden structural breaks.
MPa hardness range | Rock/formation condition | Recommended tip geometry |
|---|---|---|
0–5 | Soft clay and silt | Standard conical tungsten carbide tipped teeth |
10–30 | Weathered rock, decomposed granite, fractured sandstone | Carbide-reinforced, tapered tip to reduce chipping and wear |
40–60 | Solid limestone | Ultra-dense carbide with a flattened profile for edge retention |
~60 and above | Hard granite, basalt, quartzite | Stepped-diameter design with reinforced shanks |
30–50 | Shale, medium-density sandstone | B47K17.5 (1.1 kg) |
up to 60 | Weathered solid to solid formations | B47K19 (1.2 kg) with added mass for shock absorption |
60–80 | Dense, low-grade metamorphic formations | B47K22H (1.25 kg) |
below 30 | Gravel, permafrost, fractured overburden | C31HD (0.5 kg) with simplified geometry |
Hard granite, basalt, and quartzite need stepped-diameter tools with thick shanks. Extra tool weight soaks up harsh shaking while crushing deep rock layers. You lengthen tool life and lower field fix times by picking broad carbide tips for tough ground. Your drilling rig works smoothly inside hard rock layers.
Selecting a Reliable Bullet Teeth Manufacturer
You should check key details when picking a top Chinese supplier for drilling parts. Make sure to inspect raw material sources, factory tests, and custom building options. Buying directly from a Chinese factory saves you plenty of money compared to store prices. Market costs for round shank tools fall between $2.35 and $45.65 depending on the design and order size.
Model / specification | Supplier example | Per-piece price (USD) | MOQ / volume condition |
|---|---|---|---|
Cobalt-tungsten cutting pick | Handan Zhongfu | $2.35 - $3.50 | 5 pieces |
C31HD carbide bullet teeth | Beijing Polar Rich / Xi'an Heaven Abundant | $3.00 - $3.90 | Bulk tiers of 3,000-4,000+ pieces; MOQ 40-100 pieces |
C31HD / B47K22H bullet teeth | Cangzhou Yuandong | $5.00 - $8.00 | 1 box |
High-impact carbide bullet tooth | Zhuzhou Jinxin | $6.00 - $7.00 | 50 pieces |
B47K22H 42CrMo / 22mm rotary tooth | Beijing Polar Rich | $6.20 - $11.20 | 1 set |
Round shank hard-rock bullet teeth | Shandong RZ | $9.50 - $10.00 | 1,000 pieces |
UMP carbide bullet teeth | Shandong Yanggu | $10.60 - $10.80 | 500 pieces |
B47K22H carbide bullet teeth | Hunan Unicorn | $15.00 | 1 piece |
B47K19H 38/30mm round shank bullet teeth | Yanggu Juli | $36.50 - $45.65 | 1,000 pieces |
Small test orders of C31HD teeth cost $15 to $25 each, while B47K22H samples run $25 to $40 each. Ordering directly from a Chinese Bullet Teeth Manufacturer cuts down your total costs. For example, a project manager in Jiangsu bought 2,000 B47K19H teeth from an ISO-certified Chinese factory for $6.50 each rather than paying a $45 retail price.
Quality Assurance and ISO Certifications
You keep your job site gear safe by asking for proven factory standards from sellers. Buyers must demand ISO 9001:2015 approval as the standard mark of high quality. Choosing direct factories over trading firms gives you extra control over chosen materials and steady production output.
Certification / Standard | Role in Quality Assurance |
|---|---|
ISO 9001:2015 | Fundamental baseline and minimum quality management standard for suppliers |
Industry-specific certifications | Provides additional product-quality relevance for specialized applications |
Destination-country standards | Ensures full legal and technical compliance for international export markets |
Trusted suppliers use tough testing steps to check copper brazing strength, metal hardness, and tip purity. Your seller must also meet destination-country rules to guarantee full approval when shipping parts into foreign markets.
Factory Audits and Custom OEM Support
Partnering with a skilled Bullet Teeth Manufacturer lets you order custom tool shapes made for your work site. Great Chinese builders craft Ra1.6 smooth surfaces while holding exact sizes that match your planning prints.
Changzhou Renewal Machinery Co., Ltd. serves as a top global builder for custom wear parts. Their engineering crew uses a simple eight-step system to finish your custom builds:
You send your product samples or technical drawings directly to the factory team.
The company team completes a full technical check on your custom design plans.
The company updates the product design to match your exact job site needs.
You check and approve the final engineering drawings before work starts.
The factory creates a real physical sample for your final review.
You test and verify the sample quality on your job site.
The company begins full mass production to fill your large tool order.
The company asks for your feedback to ensure top product work.
This custom design process helps you change metal shapes, add brand logos, and pick custom boxes easily.
Buying your parts right from a top Chinese Bullet Teeth Manufacturer lowers your job expenses and ensures reliable field results. You shield your drilling machine by pairing carbide tip styles and forged alloy body toughness with your exact ground conditions. Strong step or tower carbide inserts smash tough rock easily while stopping your tool bodies from wearing out early.
Working with Changzhou Renewal Machinery Co., Ltd. gives you quick access to top-quality cutting tools. Their engineering group provides custom OEM options, reliable high-volume builds, and cheap factory prices for your foundation digging tasks. Reach out to Changzhou Renewal Machinery right now to ask for fast cost estimates, tool spec sheets, or test samples for your coming project.
FAQ
Why should you choose 100% virgin tungsten carbide tips?
Pure tungsten carbide tips give you the best strength and wear control. This clean metal skips the hidden cracks seen in used parts. Choosing pure carbide stops your tools from chipping or snapping when hitting tough stone.
How do you select the correct shank size for your rig?
Pick your tool size by checking your drill unit and job site soil. Common sizes include 19mm, 25mm, and 30/38mm shanks. Match your tool base directly to your machine block to stop dangerous tool wobbling.
Can you order custom bullet teeth based on your drawings?
Yes, Changzhou Renewal Machinery Co., Ltd. builds custom parts from your exact plans. Just send your technical drawings or real sample teeth to their design team. The shop builds unique shapes, sizes, and logos for your special job needs.
What rock formations suit stepped-diameter bullet teeth best?
Use stepped-diameter teeth when drilling super hard stone like granite or basalt. Their heavy metal bases soak up strong drill shaking with ease. This smart design guards your tool end while crushing dense rock smoothly.
