A roller linear guide or roller guideways is a type of high-precision, high-rigidity, and high-load-capacity linear motion system. It is a critical component in the linear motion family, widely used in industrial equipment where exceptional precision, stiffness, and load-bearing capabilities are required.
1.What is a Roller Linear Guide?
In simple terms, a roller linear guide or linear roller rail is a mechanism that uses cylindrical rollers as the rolling elements to facilitate infinite linear motion between linear roller rail and a roller guideways sliding block.
Its core components include:
Roller guide rails: A precision-ground or hardened steel roller guide rails that serves as the foundational track for carrying loads and providing guidance.
Slider/Block: The component that moves along the roller guide rails. Roller guideways block contains the roller recirculation system and is attached directly to the moving part of the machine.
Rollers: Cylindrical rolling elements. This is the fundamental difference from "ball linear guides."
Retainer/Cage: A component that spaces the rollers evenly, preventing them from rubbing against each other. This ensures smooth movement and reduces noise.
End Seals & Wipers: Keep contaminants like dust and chips out of the critical rolling areas and retain lubrication.
2. Application of a Roller Linear Guide
2Roller guideways and roller rail are the ideal choice for "heavy-load, high-precision, high-rigidity" applications:
Heavy-Duty CNC Machines: Gantry milling machines, floor-type boring and milling machines, large stamping presses.
Precision Machine Tools: High-rigidity grinding machines, EDM machines.
Industrial Robots: Robot arms and joints (especially crossed roller guides).
Automation Equipment: Large handling robots, Automated Guided Vehicles (AGVs), semiconductor manufacturing equipment.
Precision Measurement Instruments: Coordinate Measuring Machines (CMMs), optical inspection systems.
Renewable Energy Equipment: Pitch and yaw systems in wind turbines.
3. Why choose NGS roller guide rails ?
Superior Load Capacity of roller guideways: roller guide rails can handle several times the load of a similarly sized ball guide.
High Rigidity of roller rail: linear roller rail's minimal elastic deformation ensures stability and precision during heavy-duty operations like cutting.
Long Service Life of linear roller rail: Due to even load distribution, wear is minimized, leading to a longer lifespan, especially under heavy loads.
Excellent Precision Retention: roller linear guide can maintains initial accuracy well, even after long-term operation under heavy loads.
4. The service NGS can provide.
Cstomized service: NGS can provide the costomized service to our customers, including print customized logo on the roller guideways, design customized box, customized length of roller rail.
After-sales service: NGS will provide one to one after-sales service to our customers, including sales, engineer,manager, which can ensure our customers have professional after-sales service in time.
Warranty service: NGS provide 12 months warranty for all of our roller guide rails,roller guideways,roller rail,linear roller rail.
24 hours professional service
Please send your needs and requirement of your roller guide rails , we will reply as soon as possible!
Email : saleskiki@ngsbearing.com
whatsapp/wechat:(+86)13302562107
Load capacity is determined by dynamic (C) and static (C₀) load ratings. For example: A 6205 deep groove ball bearing has a dynamic load rating of 14 kN, suitable for small motors. For heavy loads, choose tapered roller bearings (e.g., 32208 with C=90 kN). Recommendation: Share your equipment’s load analysis for optimal bearing selection.
Materials: Stainless steel (440C/316) or coatings (nickel plating, DLC). Seals: Double rubber seals (2RS) or PTFE seals. Example: Seawater pumps often use 316 stainless steel bearings with lifelong grease.
Speed limits depend on bearing type and lubrication: Standard 608ZZ ball bearings: ~18,000 rpm. Hybrid ceramic bearings (Si3N4 balls): 30–50% higher speeds. Solution: For high-speed applications, opt for oil lubrication or low-friction design.
Theoretical lifespan: Based on load calculations (see Q1). Real-world factors: Lubrication intervals (e.g., grease replenishment every 100km). Mounting surface flatness (≤0.01mm/m required). Tool: Free lifespan calculation software available.
Must-check: Slider hole spacing (e.g., 45mm×45mm). Rail width (15/20/25mm, etc.). Slider height (impacts machine space). Pro tip: Old slider model numbers are often engraved on the side.
Of course, we provide customized service, including add customers’ logo on the products, customized size of linear guide rail.
It according to the products, we usually can adjust the quantity according to customers’ request.
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You can either fill out the contact us form on our website, or head over to our sister website ngsbearing.com and request a quote over there for any product you see here on Bearings Direct. Please note that there will be minimum order quantities.
