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Internal CNC Thread Grinder with Coolant System Sk7620b
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
AvailableAfter-sales Service
Overseas ServiceWarranty
12 Months Since ShipmentModel NO.
SK7620BType
Internal Grinding MachineProcessing Object
ThreadAbrasives
Grinding WheelControlling Mode
CNCAutomatic Grade
AutomaticCylindrical Grinder Type
MetalPrecision
High PrecisionCondition
NewApplication
Cylindrical Worms with Za, Zn, Zi, Zk, Zc1 ToothModel
Sk7620bService
Engineers Can Installation and TrainingMax.Mounting Diameter
300 mmMax.Center Distance
200mmGrinding Diameter
25-200mmMax.Grinding Length
125mmModule Range
0.5-24mmHelix Angle
Left -12° Right +12°Thread Start Number
1-45Max.Wheel Linear Speed
24000 R/MinMax.Wheel Diameter
100mmMachine Size
2270×1550×2000mmMachine Weight
5000kgCNC System
SiemensTransport Package
It's Suitable for Long Distance TransportationSpecification
2300×1600×2000MMTrademark
RefineOrigin
ChinaProduction Capacity
100 Sets/YearKey features
High-Precision CNC Control: Equipped with Siemens 840D system for 4-axis and 3-linkage control.
Swiss IBAG Electric Spindle: Features high precision, long service life, and AC variable frequency speed regulation.
Automatic Helix Angle Adjustment: Achieved via AC servo motor driving high-precision worm gear pair with automatic locking.
Diamond Disc Wheel Dresser: CNC grinding wheel dresser with special profiling software for linked interpolation movement.
Superior Accuracy for Thread Gauges: Designed for precision thread ring gauges with accuracy higher than ball screw nuts.
Comprehensive Warranty Coverage: Standard 12 months or 2,000 hours; optional extended coverage up to 36 months.
Global 24/7 Technical Support: Provides 24/7 assistance, spare parts supply, and on-site or remote training.
Custom Configurations Available: Custom configurations available upon request for specific application needs.
Company profile

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 warranty period for this machine?
A:
Standard warranty is 12 months or 2,000 operating hours, whichever comes first. Extended warranty up to 36 months is optional.
Q:Which CNC system does the SK7620B use?
A:
It adopts the high-end SIEMENS 840D numerical control system for four-axis and three-linkage control.
Q:What is the maximum mounting diameter?
A:
The maximum mounting diameter is 300mm.
Q:Can the machine handle different thread types?
A:
Yes, it is designed for grinding cylindrical and conical internal threads including triangular, trapezoidal, and sawtooth types.
Q:What is the precision accuracy for threads with a pitch of 6mm or less?
A:
Adjacent pitch error is 0.0025mm at 25mm length, 0.003mm at 100mm length, with flank angle deviation of 6 and cylindricity error of 0.005mm.
Send Inquiry
*To:
Dalian Refine Tech Co., Ltd.
Dalian Refine Tech Co., Ltd.*Content:
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