How does solid carbide handle heat compared to TCT?

Solid carbide has superior thermal conductivity and a uniform coefficient of thermal expansion throughout the entire cutting section. In TCT bits, the carbide tip and steel body expand at different rates under heat - this differential expansion is a primary cause of braze joint fatigue and eventual failure. Solid carbide eliminates this failure mode entirely. For high-speed, continuous production where tools run hot, this is a significant reliability advantage.

Solid Carbide Through-Hole Boring Dowel Bit for CNC Drilling Machine

Name: Solid Carbide Through-Hole Boring Dowel Bit for CNC Drilling Machine
Brand: Qingdao Jiandeli Woodworking Cutters Co., Ltd.
SKU: 1999322131

Shandong, ChinaQingdao Jiandeli Woodworking Cutters Co., Ltd.

US$4.00

20 Pieces

Product specifications

JANDLI Bits

Sample price:US$15.00/piece.Request sample

Product profile

Customization

Available

Customized

with Customization Services

Standard

DIN

Model NO.

Solid Carbide Through-Hole

Length

57/70

Type

One-Piecehole Drill Bits

Material

Tungsten Carbide

Usage

Wood Drilling

Body Material

Whole Solid Tungsten Carbide

Brazing

Silver Brazed

Shank Diameter (D)

10 mm

Flute Type

Enlarged Spiral Flute

Number of Flutes

Compatible Materials

Solid Wood, MDF, Particle Board and Others

Warranty

12 Months

Transport Package

Box

Specification

d=2-8mm D=10mm, L=57/ 70mm

Trademark

JANDLI

Origin

China

HS Code

8208200000

Production Capacity

50000 PCS/Year

Key features

KJ series is made of ultra-fine grain solid tungsten carbide blank without brazed joints. It features consistent hardness and thermal performance for higher structural integrity than tipped bits.

Fully ground in one clamping setup, total runout less than 0.02mm. Better concentricity than brazed cutters with no thermal deformation issues.

Two separate rotation marks on each bit to avoid reverse installation, preventing workpiece burning, tool damage and production downtime.

Solid carbide structure allows full geometry restoration after regrind. It can be resharpened 5-8 times, more durable and lower long-term cost per hole than brazed bits.

Custom diameters, lengths and laser private labels are available. MOQ 50pcs per item, lead time 20-25 days.

Universal 10mm Cylindrical Shank - Plug and Play Standard 10mm diameter cylindrical shank with positioning flat.

LH & RH Rotation - Paired Sets for Multi-Spindle Balance Available in both Left-Hand and Right-Hand rotation to match any machine spindle configuration.

Re-Sharpenable Design - Lower Lifetime Cost Unlike disposable bits, the TCT carbide tip can be professionally re-sharpened multiple times.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceIn-stock CapacityQuality Assurance

Qingdao Jiandeli Woodworking Cutters Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤3.27h

AI-Powered supplier vetting

SummaryJandeli is a cutting-tool R&D and manufacturing supplier founded in 1999, with multiple production bases, nationwide coverage, and stated service reach in Southeast Asia and North America. It reports broad customization, OEM and ODM capabilities, recent new-product development, more than 50 patents, and quality-management practices including ISO 9001 implementation. Its after-sales network includes grinding centers in more than 10 cities serving over 10,000 domestic end customers. Production and quality systems show some structured controls, including two inspectors, standardized finished-product inspection instructions, and corrective-action procedures. However, the supplier reports no overseas agents or branches, overseas warehouse, overseas showroom, or offline trade-show participation; it also lacks a valid manufacturing-capacity contract with related subcontractors and has no written supplier-service assessment procedures. Financial credibility cannot be assessed from the provided slices because only...

Supplier typeThe supplier identifies itself as Jandeli, a cutting-tool R&D and manufacturing company founded in 1999 and positioned as a provider of cutting-tool system solutions. Its production bases and sales and technical service personnel indicate that it is a manufacturer with integrated technical-service capabilities rather than only a trading intermediary.

After-Sales capabilityThe supplier has established grinding after-sales centers in more than 10 cities and serves more than 10,000 domestic end customers, supported by nearly 100 sales and technical service personnel and coverage in China, Southeast Asia, and North America. However, it reports no overseas agents or branches, overseas warehouse, or overseas showroom, so the strength of direct overseas after-sales infrastructure is limited.

R&D capabilityThe supplier reports new products during the past year, ODM services, broad R&D-oriented customization, more than 50 invention and utility-model patents, and joint cutting-tool design and development with well-known domestic equipment manufacturers. These statements provide direct evidence of active product development and innovation capability, although no SDK is available.

Production capacityProduction capability is supported by multiple production bases, machining equipment including milling, grinding, laser processing, and CNC centers, stated inventory capability, 120 qualified service-capability suppliers, and peak and off-season lead times within 15 working days. Risks remain because there is no valid manufacturing-capacity contract with related subcontractors and no written procedure or records for effective supplier-service-capability assessment.

Customization capabilityBoth R&D and design-service records explicitly list customization from samples, customization from designs, full customization, minor customization, and flexible customization. The consistent listing across the two slices directly supports broad customization coverage.

Client casesThe supplier states that its after-sales centers serve more than 10,000 domestic end customers and that it jointly designed and developed cutting tools with well-known domestic equipment manufacturing enterprises under a long-term strategic partnership. It also reports business coverage in China, Southeast Asia, and North America, providing evidence of customer and partnership experience, although specific customer names and project details are not supplied.

Product Q&A

Q:What is the difference between LH (Left Hand) and RH (Right Hand) rotation?

LH and RH rotation must match your machine's spindle direction. Multi-spindle boring machines typically require paired LH+RH bits to balance cutting forces. Send us your machine model - we'll confirm the correct combination.

Q:What is the difference between Solid Carbide (KJ-Series) and TCT (ZY-Series)?

Solid Carbide (KJ-Series) is machined from a single piece of tungsten carbide - the entire cutting section is one material with no joints. TCT (ZY-Series) has a carbide tip brazed onto a steel body. Solid carbide offers: no braze joint to fail, 3-5* longer service life, better concentricity, higher hardness (HRA 91-93), and 5-8 re-sharpenings vs 3-5 for TCT. The trade-off is higher initial cost. Choose solid carbide for high-volume production, abrasive materials, or applications where bit failur

Q:Will the solid carbide tip break or chip?

Solid carbide is harder than TCT carbide but also more brittle. Under proper operating conditions (correct feed rate, appropriate spindle speed, no lateral force on the bit), chipping is extremely rare. The one-piece construction means there is no braze joint to crack from thermal cycling - a far more common failure mode in TCT bits. For extreme conditions, contact us for specific feed/speed recommendations.

Q:When should I choose solid carbide over TCT?

Choose solid carbide when: (a) you run high-volume production (>500 panels/day), (b) you process abrasive materials (MDF, particle board, HPL), (c) you manufacture premium/high-value furniture where bit failure means scrapped panels, (d) you work with hardwood, or (e) you want the lowest possible cost per hole over the tool's lifetime. Choose TCT (ZY-Series) when budget is the primary constraint or production volumes are moderate.

Q:What is the MOQ? Can I order samples to test?

Standard MOQ is 20 pieces per specification. For first-time buyers, we offer sample orders of 1-2 pieces so you can test the solid carbide performance on your machine and material before committing to production quantities. Samples ship within 5-7 days.