The difference with this design is that the balance adjustment screws tighten from the outer skirt at a radial angle. It is the optimal choice for spindles with restricted space. Balance adjustment screw holes can be fitted with screw-in plugs (option), eliminating high frequency noise and subsequent vibration.

·Material Composition: SCM440(42CrMo4)
·Hardness: HRC48° ~52°
·Thread Precision: ISO 4H
·Parallelism: 0.002mm
·Edge Bevel: 0.002mm
·Concentricity: 0.005mm