Vertical‑Spindle Rotary‑Table Surface Grinder Selection: Definition and Judgment of High Rigidity

When selecting a vertical‑spindle rotary‑table surface grinder, "high rigidity" is a frequently cited selling point. But what does it actually mean, and how should it be evaluated? Machine tool rigidity denotes the ability of key components including the machine bed, column and spindle to resist deformation. Greater rigidity results in less component deflection under heavy‑load grinding and more stable machining accuracy.

Shandong Linmo vertical‑spindle rotary‑table grinders feature a high‑rigidity cast‑iron structure. All castings are made of HT300 cast iron and undergo special annealing treatment as well as natural aging to eliminate internal stress, establishing a solid foundation for machine‑tool rigidity starting from raw materials.

There are several aspects to judge the rigidity of a rotary‑table surface grinder. First, inspect the bed structure: grinders with a three‑point adjustment design for the column have a more compact structure and higher rigidity. Second, check materials and casting processes: beds cast by the resin‑sand process possess good material quality and high strength. Third, review spindle configuration: spindles adopting 38CrMoAlA alloy steel and P4‑grade bearings ensure superior rigidity. Shandong Linmo has carried out major optimizations to enhance the rigidity of the machine bed and grinding head. The equipment runs reliably under actual high‑intensity continuous operation, fully illustrating the product characteristics of high rigidity and excellent stability of the rotary‑table surface grinder.