What is the difference between SK7620A and SK7620C?

SK7620A uses servo motor ball screw drive, while SK7620C uses linear motors and linear guideway, offering better stability but higher repair complexity.

High-Speed Precision Internal Thread Grinder Sk7620b

Name: High-Speed Precision Internal Thread Grinder Sk7620b
Brand: Dalian Refine Tech Co., Ltd.
SKU: 2136974792

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.

SK7620B

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

Sk7620b

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

0.5-24mm

Helix Angle

Left -12° Right +12°

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 Siemens 840D system for 4-axis linkage and high-precision rotary encoder indexing.

Swiss IBAG Spindle: Features high-speed electric spindle with AC variable frequency for constant linear speed control.

Specialized Gauge Grinding: Specially designed for grinding cylindrical/conical internal thread ring gauges with high accuracy.

Automatic Helix Adjustment: AC servo motor drives worm gear pair for automatic helix angle adjustment and locking.

Comprehensive Warranty: Standard 12-month warranty or 2,000 operating hours, with optional extended coverage up to 36 months.

Global After-Sales Support: 24/7 technical assistance, spare parts supply, and on-site or remote training available.

Versatile Thread Processing: Handles triangular, trapezoidal, and sawtooth threads with module range 0.5-24mm.

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: ≤4.67hTerms 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.