What is the maximum mounting diameter?

The maximum mounting diameter is 300mm for models A, B, and C, and 600mm for model SK7640.

Are custom configurations possible?

Yes, custom configurations are available upon request to suit specific application requirements.

What is the average lead time?

Lead time is one month during off-peak season and 1-3 months during peak season.

High-Precision CNC Internal Thread Grinder Sk7620A

Name: High-Precision CNC Internal Thread Grinder Sk7620A
Brand: Dalian Refine Tech Co., Ltd.
SKU: 1982163041

Liaoning, ChinaDalian Refine Tech Co., Ltd.

US$50,000.00

1-4 Pieces

US$45,000.00

5-9 Pieces

US$40,000.00

10-19 Pieces

US$30,000.00

20+ Pieces

Product profile

Customization

Available

After-sales Service

Overseas Service

Warranty

12 Months Since Shipment

Model NO.

SK7620A

Type

Internal Grinding Machine

Processing Object

Thread

Abrasives

Grinding Wheel

Controlling Mode

CNC

Automatic Grade

Automatic

Cylindrical Grinder Type

Metal

Precision

High Precision

Condition

New

Application

Cylindrical Worms with Za, Zn, Zi, Zk, Zc1 Tooth

Model

Sk7620A

Service

Engineers Can Installation and Training

Max.Mounting Diameter

300 mm

Max.Center Distance

200mm

Grinding Diameter

25-200mm

Max.Grinding Length

125mm

Module Range

1-24mm

Helix Angle

Left -12° Right +10°

Thread Start Number

1-45

Max.Wheel Linear Speed

24000 R/Min

Max.Wheel Diameter

100mm

Machine Size

2270×1550×2000mm

Machine Weight

5000kg

CNC System

Siemens

Transport Package

It's Suitable for Long Distance Transportation

Specification

2300×1600×2000MM

Trademark

Refine

Origin

China

Production Capacity

100 Sets/Year

Key features

High Precision CNC Control: Equipped with FANUC 0iMC or SIEMENS 828D systems for three-axis two-linkage operation.

Full Closed-Loop Control: X, Z, and C axes feature full closed-loop control for precise lateral, longitudinal, and rotational movements.

Intelligent Grinding Software: Features automatic grinding cycles, online dressing, and automatic compensation for enhanced efficiency.

High-Speed Motor Spindle: Enables doubled rotational speed for workpieces, significantly boosting processing efficiency.

Custom Configurations Available: Custom configurations are available upon request to meet specific application needs.

Extended Warranty Option: Optional extended warranty coverage up to 36 months beyond the standard 12 months.

Global 24/7 Support: Provides round-the-clock technical assistance and spare parts supply worldwide.

Versatile Model Range: Available in SK7620A, B, C, and 40 models with varying diameters and precision levels.

Company profile

Dalian Refine Tech Co., Ltd.

Liaoning, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2013-09-30Nearest Port: Dalian Port, Qingdao Port, Tianjin PortAverage Response Time: ≤4.10hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAP, CIP, CPT, FCA

AI-Powered supplier vetting

SummaryDalian Refine Tech Co., Ltd. is a China-based limited company identified as both a trading company and manufacturer/factory. It manufactures and supplies metal-processing machinery, including vertical lathes, CNC and manual lathes, boring machines, machining centers, gear hobbing machines, and radial drilling machines. The supplier reports ISO 9001 and ISO 14001 certification, 5 production lines, 11–20 quality-control staff, and 6–10 years of R&D-engineer experience. It states that 90% of sales are exports, exports to more than 60 countries, and has operated exports since 2013. The supplier describes one-stop service and production-problem support, but the provided information does not substantiate detailed after-sales procedures or customization examples. Customer evidence includes one recorded trade transaction and one named buyer, while broader customer references are not provided.

Supplier typeThe supplier is explicitly classified as both a trading company and manufacturer/factory, and describes itself as integrating R&D, production, and sales of machine tools for metal machining. Its listed business areas include industrial equipment, manufacturing machinery, and related tools.

CertificationsThe supplier reports holding ISO 14001 and ISO 9001 management-system certifications. These are explicit certification claims in the provided supplier information.

R&D capabilityThe supplier reports integrating R&D with production and sales, describes ongoing technological and management innovation, and lists 6–10 years of R&D-engineer experience. Its expanded product range includes CNC equipment, machining centers, boring machines, gear hobbing machines, and radial drilling machines, supporting an established technical-development capability.

Production capacityThe supplier identifies itself as a machine-tool manufacturer/factory, reports 5 production lines, and describes 15 years of specialization in vertical-lathe manufacturing. Its product scope covers multiple metal-processing machine categories, indicating established production breadth.

Client casesThe supplier states that its products have been exported to more than 60 countries, and one trade record identifies WELLTRON AUTOMATION as a buyer for a CNC machine. The provided evidence supports international customer reach, but only one named buyer and one recorded transaction are documented.

Product Q&A

Q:What is the standard warranty period?

The standard warranty is 12 months or 2,000 operating hours, whichever comes first.

Q:Can I get an extended warranty?

Yes, optional extended warranty coverage is available up to 36 months.

Q:What is the difference between SK7620A and SK7620C?

SK7620A uses servo motor ball screw drives, while SK7620C uses linear motors. Linear motors offer better long-term stability but require manufacturer repair if failed.

Q:What control systems are available?

The machine can be configured with either FANUC 0iMC or SIEMENS 828D numerical control systems.

Q:Is on-site training available?

Yes, on-site or remote operation and maintenance training is provided.