SBI is China precision turntable bearing manufacturer, our YRT SSM precision turntable bearing is greatly applied in the massive broad rotating table of the numerical control machine and many other machines with the need of high-precision control and measure of the angle and displacement, such as the missile turret, satellite launcher, tank turret, surgery turn table, electric soldering turn table 1.size(D) 326~3560mm 2.90% of our output to Europe and the US 3.ISO9001:2000 certificate approved, OEM accept 4 Type available: 1) Single-row four-point contact ball slewing bearing 2) Single-row four-point contact ball slewing bearing(with flange) 3) Single-row four-point contact ball slewing bearing(with gear teeth on inner ring) 4) Single-row four-point contact ball slewing bearing(with gear teeth on outer ring) 5) Ball-roller type slewing bearing(with gear teeth) 6) Triple-row cylindrical roller slewing bearings(with gear teeth) 7) Four-Point Contact Ball Slewing Bearing(without teeth) 8) Double row four point contact roller slewing bearing 9) Cross roller slewing bearing 10) Cross roller slewing bearing(with gear teeth on inner ring) 11) Cross roller slewing bearing(with gear teeth on outer ring) 5 Application areas: mine machine, port hoisting machine, port oil transfer equipment, onshore and offshore crane; excavator, concrete machine, paper machine, plastic and rubber machine, weave machine, steel plant, electronic power plant, wind power generation, other construction and industry machines or equipment.