What is the rated reaming diameter?

The nominal reaming diameter is 4000 mm (4 meters).

What are the payment terms?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

What is the lead time for production?

The average lead time is 1 to 3 months, depending on the season.

Large-Sized Raiseboring Machine at-4000L for Drilling Shafts for Ventilation

Name: Large-Sized Raiseboring Machine at-4000L for Drilling Shafts for Ventilation
Brand: Hunan Yier Mining Technology Co.,Ltd.
SKU: 1992513551

Hunan, ChinaHunan Yier Mining Technology Co.,Ltd.

US$585,000.00-1,150,000.00

1 Set

Product specifications

Maximum Drill Depth

Norminal Diameter

Product profile

After-sales Service

24 Hours on Line Service

Warranty

12 Months

Certification

CE, RoHS, ISO 9001:2000, ISO 9001:2008

Model NO.

AT-4000L

Condition

New

Motor

AC Motor

Drill Hole Diameter

400meter

Drill Hole Depth

>300m

Bit Type

Cone Bit

Drilling Way

Rotary

Pump Head

Shaft Depth 20-50m

Flow Rate

30-35m³/H

Deviation Rate

0.5%

Pilot Hole

1.5-2m/H

Reaming

1-2m/H(Rock Hardness Coefficient:8-12)

Crew

1 Main + 1 Assistant Per Shift

Drill Rods

φ286× 1200 mm

Transport Package

Nude Packing

Specification

6910(L)*17500(W)*2020(H)mm

Trademark

Yier Technology

Origin

China

HS Code

8430412900

Production Capacity

200 Sets/Year

Key features

Intelligent Control System: PLC programmable control based on CANBUS with reserved interface for smart mine unmanned operation.

Wireless Remote Operation: Integrated crawler self-propelled travel with optional wired control and wireless remote operation modes.

Deep-Well Anti-Deviation: Proven performance in fractured zones with intelligent anti-jamming and deep-well anti-deviation protection.

Multi-Speed Selection: Automatically matches optimal operating parameters according to different hole diameters and rock conditions.

Large Diameter Capability: Designed for enlarging boreholes to form 4-meter-diameter shafts with maximum drilling depth of 400 meters.

Global Project Experience: Successfully completed seven 3.5m-diameter ventilation shafts for Kindia Tunnel Project in Guinea.

Comprehensive Warranty: 12 months warranty coverage on all non-consumable components with 24-hour online service support.

ODM/OEM Customization: Full customization options available from samples, designs, or flexible minor customization requests.

Company profile

Hunan Yier Mining Technology Co.,Ltd.Hunan, 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: 3 years CertifiedNearest Port: Yantai Port; Shanghai Port; Guangzhou Port; Shenzhen PortAverage Response Time: ≤0.01h

AI-Powered supplier vetting

SummaryThe supplier manufactures raise boring machines and mining down-the-hole drilling machines and reports more than 100 employees, with over half engaged as researchers or after-sales technical engineers. It provides broad customization, 3D design, ODM, OEM, and SDK-related capabilities, and launched new products during the past year. Quality controls include raw-material traceability, 100% finished-product inspection, corrective-action procedures, and complaint-handling procedures, although only two quality inspectors are reported. The supplier has inventory capability but no overseas warehouse, overseas showroom, or valid manufacturing-capacity contract with affiliated subcontractors. Financial figures are not assessed here due to privacy requirements. Evidence of Fortune 500 cooperation supports customer experience, while repeat-buyer preference is reported at 10%–30%. Certification details are insufficient for a specific certification assessment.

Supplier typeThe supplier is a manufacturer and seller focused on mining machinery, specifically raise boring machines and mining down-the-hole drilling machines, while also covering hydraulic, electrical, security, and mechanical-electrical equipment. Its stated scope includes import, export, and agency activities, indicating both manufacturing and trading-related operations.

After-Sales capabilityMore than 50% of the reported workforce consists of scientific researchers and after-sales technical engineers, and the supplier has documented corrective/preventive-action and customer-complaint procedures with records. However, it lacks overseas warehouse and showroom services, so the evidence supports technical and procedural after-sales capability but not comprehensive overseas service coverage.

R&D capabilityThe supplier reports more than 50% of its workforce in scientific research and after-sales technical engineering roles, 15 R&D engineers, new products launched during the past year, 3D software design, ODM services, and SDK availability. These explicit capabilities support an established product-development and innovation function.

Customization capabilityThe supplier explicitly offers customization from samples and designs, full, minor, and flexible customization, along with 3D software design, ODM, and OEM services. The breadth of stated options demonstrates strong customization capability.

Client casesThe supplier reports cooperation with Fortune 500 companies, which is direct evidence of experience serving large recognized customers. Repeat-buyer preference is reported at 10%–30%, but no customer names, project details, or independently verifiable case descriptions are provided.