Sheave(out diameter Φ1865) features:
1) Material: Q235B, Q345B, 35#, 45#
2) Groove surface quench: HRC45-55
3) Groove surface quench depth: ≥2mm
4) Max processing diameter: ≤2,000mm
5) Low production period
They used for crane , port machine , oil drilling rig and so on .