What is the maximum mounting diameter?

For the SK7420 model, the maximum mounting diameter is 200mm.

Which industries can use this thread grinding machine?

It is suitable for Aerospace, Automotive Manufacturing, Tool and Die Making, and Oil and Gas sectors.

High-Speed External Thread Grinding Machine for Bolts Sk7420

Name: High-Speed External Thread Grinding Machine for Bolts Sk7420
Brand: Dalian Refine Tech Co., Ltd.
SKU: 1982129861

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.

SK7420

Type

External Grinding Machine

Processing Object

Thread

Abrasives

Grinding Wheel

Controlling Mode

CNC

Automatic Grade

Automatic

Precision

High Precision

Condition

New

Application

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

Model

Sk7420

Service

Engineers Can Installation and Training

Max.Mounting Diameter

200mm

Max.Center Distance

780mm

Grinding Diameter

20-200mm

Max.Grinding Length

700mm

Module Range

0.25-24mm

Helix Angle

±30°

Max.Lead

300mm

Thread Start Number

1-99

Table Rapid Return Speed

3000mm/Min

Work Spindle Speed

0-100r/Min

Max.Wheel Linear Speed

2390-3185rpm

Max.Workpiece Weight

25kg

Transport Package

It's Suitable for Long Distance Transportation

Specification

2660x2310x2800mm

Trademark

Refine

Origin

China

Production Capacity

100 Sets/Year

Key features

Siemens 828D CNC Controller: Controls 6 axes with advanced programming for automatic dressing and grinding cycles.

Multi-Axis Linkage Capability: Features 7 axes with 3 linked axes for complex spiral movements and precise dressing.

Self-Compensating Dressing: Diamond disc automatically dresses wheels into various tooth shapes with self-compensation.

High Precision Components: Uses V and Flat type rails, precision ball screws, and servo motors for smooth, heavy-load movement.

Custom Configurations Available: Technical specifications and parameters can be customized upon request to meet specific needs.

Comprehensive Warranty Options: Standard 12-month warranty with optional extended coverage up to 36 months.

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

Versatile Thread Processing: Handles cylindrical worms with various tooth profiles, helix angles, and module ranges.

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: ≤2.55hTerms 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.