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Cheapest CNC External Grinder for Screw Sk7720b
US$50,000.00
1-4 Pieces
US$45,000.00
5-9 Pieces
US$40,000.00
10+ Pieces
Product profile
Customization
AvailableAfter-sales Service
Overseas ServiceWarranty
12 Months Since ShipmentType
External Grinding MachineProcessing Object
ThreadAbrasives
Grinding WheelControlling Mode
CNCAutomatic Grade
AutomaticPrecision
High PrecisionCondition
NewApplication
Cylindrical Worms with Za, Zn, Zi, Zk, Zc1 ToothModel
Sk7720bService
Engineers Can Installation and TrainingMax.Mounting Diameter
200mmMax.Center Distance
750mmCenter Height
120mmGrinding Diameter
10-200mmMax.Grinding Length
650mmModule Range
1-12πHelix Angle
±40°Max.Lead
150mmWheel Spindle Speed
45m/STransport Package
It's Suitable for Long Distance TransportationSpecification
2660x2310x2800mmTrademark
RefineOrigin
ChinaProduction Capacity
100 Sets/YearKey features
High Precision CNC Control: Siemens 828D system with 7 axes for complex thread grinding profiles.
Robust Cast Iron Structure: High-strength iron casting with aging treatment ensures long-term stability.
Imported Precision Components: Uses imported bearings, linear guides, and ball screws for high accuracy.
Versatile Thread Grinding: Grinds cylindrical worms (ZA, ZN, ZI, ZK, ZC1) and other thread parts.
Clean Operation Environment: Full-closed housing and high-efficiency oil processor for clean working.
Comprehensive Warranty: 12 months warranty or 2,000 operating hours, with optional 36-month coverage.
Global After-Sales Support: 24/7 technical assistance, spare parts supply, and on-site training.
Custom Configuration Available: Specifications and configurations can be customized upon request.
Company profile

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2013-09-30Nearest Port: Dalian Port, Qingdao Port, Tianjin PortAverage Response Time: ≤4.05hTerms 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 warranty period for this machine?
A:
The standard warranty is 12 months or 2,000 operating hours, whichever comes first. Extended warranty coverage up to 36 months is also available.
Q:What types of threads can this grinder process?
A:
It is designed to grind cylindrical worms with ZA, ZN, ZI, ZK, and ZC1 profiles, as well as other thread parts with corresponding soft programs.
Q:What is the maximum grinding diameter and length?
A:
For the SK7720B model, the maximum mounting diameter is 200mm, grinding diameter is 10-200mm, and maximum grinding length is 650mm.
Q:Which CNC system and components are used?
A:
The machine uses the Siemens 828D NC system, Siemens servo motors, imported brand linear guides (INA), and imported ball screw support bearings.
Q:Is customization available for this machine?
A:
Yes, custom configurations are available upon request. You can specify application details, models, and service requirements.
Send Inquiry
*To:
Dalian Refine Tech Co., Ltd.
Dalian Refine Tech Co., Ltd.*Content:
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