Kgg High Strength Linear Ball Motion Screw for Medical (GNK Series, Lead: 5mm, Shaft: 12mm)

• Customization: Available
• Flange: With Flange
• Nut Number: Single
• Model NO.: GNK1205
• Nut Type: Circulator
• Precision: C3/C5
• Rows Number: 3-Row
• Screw Diameter: 12mm
• Type: Inner Loop
• Number of Threads: 1
• Shaft Material: S55c
• Nut Material: Scm415h
• Shaft Dia.: 12mm
• Lead: 5mm
• Thread Direction: Right
• Shaft Root Dia: 9.6mm
• Ball Size: 3.175mm
• Bcd: 12.5mm
• Number of Circuit: 2.7*1
• Travel: 75/125/175/225/275/300mm
• Surface Hardness: HRC58~62
• Anti-Rust Treatment: Anti-Rust Oil
• Transport Package: PVC Bag, Wooden Box, Full Container Export
• Specification: Grinding
• Trademark: KGG
• Origin: Shanghai
• HS Code: 8483401000
• Production Capacity: 15000
• Package Size: 31.00cm * 20.00cm * 11.00cm
• Package Gross Weight: 0.500kg

Product Description

Product Description

KGG High Quality Ground Ball Screw - GNK Series

Our Miniature Ground Ball Screw - GNK delivers ultra-precise linear motion for demanding applications in precision medical devices, miniature robotics, and high-end optical equipment, etc. Our advanced precision grinding technology provides exceptional accuracy, superior smoothness, and excellent positioning repeatability. Built for longevity, it ensures reliable performance in compact, high-precision, and cleanroom environments.

Specification

Adavantages

Precision & Accuracy
The GNK-Miniature Ground Ball Screw series is engineered to deliver exceptional positioning accuracy and repeatability, meeting precision grades of C3 and C5. Through advanced grinding technology and stringent quality control, each screw ensures minimal axial backlash and superior motion stability. Ideal for applications demanding micron-level precision, such as semiconductor manufacturing, optical alignment, and biomedical instrumentation, the GNK series provides reliable performance in high-precision automation systems.
 
Load Capacity & Lifespan
Designed with robust construction and optimized ball recirculation system the GNK-Miniature Ball Screw offers enhanced dynamic and static load ratings. The precision-ground thread profile and high-quality bearing balls distribute loads evenly across multiple contact points, resulting in extended operational life and consistent performance under continuous duty cycles. This makes it suitable for applications requiring sustained high load capacity, such as pick-and-place systems, automated assembly, and precision actuation in industrial robotics.

Stiffness & Dynamic Response

Featuring a compact and rigid design, the GNK series provides excellent axial and torsional stiffness to minimize deflection under load. Its low-inertia design enables rapid acceleration and deceleration, delivering smooth and responsive motion control for high-speed automation and CNC systems. Various lubrication and sealing options are available to ensure performance in diverse environments.
 
Application
The GNK-Miniature Ground Ball Screw is widely used in industries that require compact design, high precision, and dependable motion control. Primary applications include semiconductor and electronics manufacturing for wafer handling and PCB assembly, medical and laboratory equipment such as diagnostic devices and syringe pumps, automation and robotics for linear actuators and gantry systems, optics and measurement including laser processing and inspection systems, as well as general precision machinery like 3D printers and packaging equipment.

Drawings & Dimensions

Detailed CAD drawings and dimensional diagrams are available for download here or upon inquiry.
Our engineering team can provide tailored designs to meet specific project requirements.

Factory Detailed Processing Photos

Finished Product Photos

Company Profile

Shanghai KGG Robots Co., Ltd.

Shanghai KGG Robotos Co., Ltd. is a leading Chinese manufacturer of construction equipment with over 16 years of expertise. Certified with ISO 9001, ISO 14001, and IATF 16949, we export to 30+ countries, offering reliable machinery backed by R&D innovation and strict quality control.

Why Choose Us?

Our Main Products

Self-branded
OEM/ODM capabilities
High repeat buyers choice
Customization from designs
Competitive pricing & bulk discounts
Fast shipping & customs clearance support

Ball Screw
Planetary Roller Screw
GSSD Stepper Motor
PT Variable Pitch Slide
Gearbox
Linear Actuator

Certifications

FAQ

Q: Why choose KGG China?
A: Over the past 17 years, KGG has always insisted that "products and services" start from Japanese industry standards, taking Taiwan standards as the bottom line, actively invest in the development of new transmission components and self-experiment and test. With the service tenet of "exceeding customer expectations", establish a "trusted" partnership.
 
Q: What is your main products?
A: We are a leading manufacturer and distributor of linear motion components in China. Especially miniature size of Ball Screws and Linear Actuators and linear motion guideways.  Our brand "KGG" stands for " Know-how," " Great Quality," and " Good value"  and our factory is located in the most advanced  city in China: Shanghai  with the best equipment and sophisticated technology, completely strict quality control system. Our aim is to supply world leader class linear motion components but with most reasonable price in the world. 
 
Q: How to Custom-made (OEM/ODM)?
A: If you have a product drawing or a sample, please send to us, and we can custom-made the as your required. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.
 
Q: When can I get the quotation?
A: We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price, please call us or tell us in your email so that we will regard your inquiry priority.
 
Q: How can I get a sample to check the quality?
A: After confirmation of our quoted price, you can place the sample order. The sample will be started after you sign back our detailed technical file. 
 
Q: What's your payment terms?
A: Our payment terms is 30% deposit,balance 70% before shipment.