NSK EM4020-4EG ball screw

NSK EM4020-4EG belongs to ball screw, part of our Linear motion range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for EM4020-4EG and any equivalents.

The NSK HMD series ball screw turns rotary motion into axial travel with high efficiency and repeatability. Machine tools, machining centers, automation equipment and positioning systems rely on it where rigidity and precision matter. MR Industrial Accessories LLC supplies this line to plants and workshops across the United States and in several Latin American countries.

The HMD code tells you what you are looking at. In a reference such as EM4020-4EG, the leading figures give the size, the following digits give the lead, and the closing letters and number describe the nut type and preload. Reading the designation this way lets you pin down spare parts and variants without confusion.

Typical applications include milling machines, CNC lathes, grinding machines, coordinate measuring machines, precision presses and automation equipment, as well as robotics, manipulators and high-accuracy transport systems. The screw handles high axial loads while holding position, which suits demanding duty cycles.

When selecting an HMD ball screw, look at axial load, rotation speed, the distance between supports and the mounting arrangement. Lubrication and sealing keep contamination out and help the screw last. Alignment with the linear guide and correct nut preload are what deliver the repeatability you expect.

NSK ball screws can be swapped with units from other manufacturers, but mounting dimensions, lead, diameter and load capacity all have to be checked. A similar code is not enough; tolerances and rigidity must also be compared. If you have the original screw or another brand's code, send us the data and we will point you to a compatible option.