Dimensions: Da 504, d 305, H 56. Mounting Hole Size: D1 455, D2 332, n1 10, n2 12, Φ1 M12, Φ2 18 Structure dimensions: b 45.5, h 10.5, bh 45.5, H2 45.5, dl 417, D3 412.5. Gear Data: m 5, z 99, do 495. Coa(KN) 250, Weight(kg) 29.3. External gear slewing ring 231.21.0475.013 widely used in mining and metallurgical machinery, oil and chemical industry, construction machinery, wind power equipments, port machinery, high-precision radar and missile launchers, aerospace and some other fields. Get more detail about external gear slewing ring 231.21.0475.013 please contact US.