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Professional Manufacturer of Transmission Devices
SKGR is an integrative and professional manufacturer of power transmission devices, which specializes in scientific research, production and marketing. After years′ effort, based on dedication and pragmatic management, Sankai has become a famous innovatorin the power transmission industry in the world.
Choose the gearbox you need
Our company specializes in High Precision Planetary Gearbox, NMRV series Worm Gearbox, UDL series Stepless Speed Variator, SRC series Helical Gearbox, SKM series Helical-Hypoid Gearbox, Precision Gearbox for Robot Arm and PC Helical Gear Unit.
Manufacturing Process
Complete Process System CNC + hobbing + grinding + heat treatment + CMM in one plant.
STEP 1
Housing machining (CNC)
STEP 2
Gear hobbing & shaping
STEP 3
Heat treatment
STEP 4
Gear grinding
STEP 5
Assembly
STEP 6
Backlash / noise / run-in test
STEP 7
Painting & Painting & Rust Prevention
STEP 8
Seaworthy packing
STEP 9
Container loading
Certificate of Honor
1,097 patent certificates 68+ granted patents; 1,097+ R&D documents / models.
Why Choose Us
After years′ effort, based on dedication and pragmatic management, SKGR has become a famous innovator in the power transmission industry in the world.
Complete Process System
By adopting advanced inspection equipment and methods, our company establishes a quality control system that is in accordance with ISO 9001:2015.
Enterprise Spirit
Adhering to the spirit of 'forge ahead, be pioneers', our company has already gained a big market share.
End-to-end Services
Sankai is committed to providing high-quality services and timely responses to customer inquiries.
Global Expertise
Sankai will continue, as we always do, to strive to become a leader in the power transmission industry.
Gearbox Industry Solutions
All the products are widely used in different fields such as automation industry, industrial robot, aerospace, metallurgy and mining, light industry of beer, beverage and tobacco, environmental engineering, logistics, plastic machinery, lifting and transport, parking, automobile manufacturing, textile, food, ceramics and so on.
Our international exhibitions
Latest News
The Sankai team embraces the spirit of “dedication, truth-seeking, innovation” as its business ideas, providing customers both products and services with high quality, as adhered to the purpose of “quality first, reputation first”.
See You in Formnext + PM South China (TCT Shenzhen) 2026
The 2026 South China 3D Printing & Additive Manufacturing Exhibition is about to open! Under the theme “Precise Transmission, Superior Printing,” SKGR will showcase high-precision and high-rigidity gearbox solutions tailored for the 3D printing and additive manufacturing sector.
See You in CIIF – Robotics Show
Exhibition Highlights From October 12 to 16, 2026, the China International Industry Fair – Robotics Show will grandly open at
See You in Seoul
SKGR is pleased to announce its participation in one of Korea’s most prominent exhibitions for smart factory and industrial automation,
Construction Of The Phase II Factory Project Begins.
The launch ceremony for SKGR’s second-phase plant and the “Annual Throughput of One Million High-Precision Gear Reducer Units” project took
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Sincerely Sankai determine to provide service of better quality, in-time and fast reply to our clients. And Sankai is looking forward to cooperating with domestic and foreign friends and grow together with our hard work and professionalism.