12 Inch Four Point Contact Slewing Ring Bearing With Inside Gear 300x475x55mm Heavy Duty Ball Bearing For Industrial Machinery And Slow Turning Loads And Applications

12-Inch Four-Point Slewing Bearing with Inside Gear
✔️ Bore 300 mm (11.81 in), OD 475 mm (18.70 in), W 55 mm (2.17 in) single unit

Designed as a heavy-duty slewing bearing with internal gear teeth, this 12-inch four-point contact unit supports slow, large-rotation loads on equipment like cranes, wind turbines, and large platform turntables. It combines robust load handling with reliable inner gear engagement for smooth, controlled rotation in demanding industrial settings.

✅ Bore: 300 mm (11.81 in) inner bore
✅ Outer diameter: 475 mm (18.70 in) outer ring
✅ Width: 55 mm (2.17 in) slewing ring thickness
✅ Inside gear teeth for direct-drive engagement
✅ Four-point contact arrangement supports heavy, slow-turning loads
✅ Suitable for cranes, wind turbines, and industrial turntables

💡 What is an internal-gear slewing bearing used for in heavy machinery? This handy explanation covers typical use cases and benefits: - Provides smooth rotation under heavy radial and axial loads - Internal gear enables direct drive engagement with a drive gear - Common in cranes, wind turbine hubs, and large turntables - Requires proper lubrication and protective seals for long life