NSK BSS4020-4ES ball screw
- Brand
- NSK
- Category
- Linear motion
- Subcategory
- Linear motion
- Series
- BSS
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Description
NSK BSS4020-4ES 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 BSS4020-4ES and any equivalents.
The NSK BSS series ball screw turns rotary input into axial travel, giving the accuracy and repeatability that positioning systems demand. You will find it in machine tools, automation equipment and other setups where exact movement matters. MR Industrial Accessories LLC supplies this series to customers throughout the United States and in several Latin American countries, and can help you match the right model to the job.
Reading a BSS code starts with the screw's nominal diameter and lead, then the count of ball circuits and the preload designation. In BSS1520-2ES, the numbers give a 15 mm diameter and a 20 mm lead, with 2 circuits; BSS4010-5ES means 40 mm diameter, 10 mm lead and 5 circuits. The ES suffix covers preload and axial clearance behavior. Once you know that pattern, identifying a configuration from the label is straightforward.
Typical installations include machining centers, CNC milling and grinding machines, Cartesian robots, measuring equipment, precision presses, laser cutting machines and automated transport systems. The ability to carry high axial loads while holding precision suits them to demanding production cycles.
Selection comes down to axial load, rotation speed, critical length and how the screw is mounted. Lubrication choice, whether grease or oil, and sealing should follow the operating environment; dusty areas or ones with chips call for extra protection. Keeping the screw and nut properly aligned prevents premature wear. Because preload influences rigidity and repeatability, it is worth confirming that detail before ordering.
A BSS ball screw can replace an equivalent from another maker when diameter, lead, length and nut type line up. If you only have a competitor's number, or the part is unmarked, send whatever data you have and we will point you to a compatible option. MR Industrial Accessories LLC helps you locate the right equivalent for your equipment.
To get a quote on an NSK BSS series ball screw, message us on WhatsApp or by email with the complete part number or the measurements you need. The team responds promptly and can suggest equivalents or assist with the selection.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What does the ES suffix indicate on a BSS ball screw?
- It identifies the preload and axial clearance type within the NSK designation, so it shapes how the screw behaves in service. Share the model with us and we will help you interpret the full code for your application.
- How do I decide between the available BSS diameters and leads?
- Axial load, speed and the precision you need drive the decision. A larger diameter handles more load, while a larger lead produces more travel per revolution. Describe your application and we will help you narrow it down.
- Can a ball screw from another brand be replaced with an NSK BSS unit?
- It can, provided diameter, lead, length and mounting type correspond. Preload and sealing also come into play. Send the original part number or your measurements and we will identify the equivalent for your equipment.