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Original Ewellix Planetary Roller Screw for Heavy-Duty Robot Linear Actuators

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Original Ewellix Planetary Roller Screw for Heavy-Duty Robot Linear Actuators

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Certification : ISO、AS9100 、CE / RoHS、Swedish Engineering Excellence

Place of Origin : Sweden

MOQ : 1

Price : $400.00 - $2500.00

Payment Terms : L/C,D/A,D/P,T/T,Western Union

Delivery Time : 3-5Workdays

Packaging Details : Original

Screw Type : Planetary Roller Screw / Ball Screw Options

Load Capacity : Ultra-High Load (Heavy-Duty Design)

Environment : Harsh Environments Compatible

Precision Level : Ground Precision (High-Grade Finish)

Durability : Extended Service Life Technology

Brand Origin : Sweden (100% Genuine Heritage)

Shipping Term : International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line

Freight Charge : For Industrial Equipment (e.g., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote

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Original Ewellix Planetary Roller Screw for Heavy-Duty Robot Linear Actuators
Ewellix (formerly SKF Motion Technologies) leverages over a century of precision engineering heritage to provide the world's highest-performing linear motion solutions. Their Planetary Roller Screws represent the pinnacle of linear drive technology, utilizing multiple threaded rollers instead of balls to transmit power. This design geometrically increases the contact area, providing several times the static and dynamic load capacity of a ball screw of the same size. Ewellix screws are the core components for humanoid robot leg actuators, heavy-duty collaborative robot joints, and "oil-to-electric" (hydraulic replacement) applications in extreme environments.
Product Highlights
  • Massive Load Capacity: The planetary roller design significantly increases the number of contact points, offering dynamic load ratings far superior to equivalent ball screws.
  • Ultimate "Oil-to-Electric" Solution: High thrust density allows these screws to replace bulky hydraulic cylinders with more precise, eco-friendly, and maintenance-free electric control.
  • Extreme Reliability & Service Life: The unique structure minimizes pressure on individual contact points, resulting in minimal wear even under 24/7 high-frequency cycle conditions.
  • High Speed & Acceleration: Free from the physical limitations of ball recirculation, these screws can operate at extremely high rotational speeds and accelerations without compromising precision.
  • Harsh Environment Durability: Superior material science and engineering allow stable operation under severe impact, vibration, and extreme industrial or outdoor conditions.
  • Micrometer Precision Preloading: Advanced preload adjustment technology ensures high rigidity with nearly zero backlash for absolute motion control.
Core Parameter Table (Planetary Roller Series)
Model (Series) Shaft Dia (mm) Lead (mm) Static Load (kN) Dynamic Load (kN) Typical Application
SR-15-5 15 5 80 45 Humanoid Leg Actuators
SR-20-10 20 10 120 75 Heavy-Duty Robot Arms
HR-30-20 30 20 250 150 Industrial Servo Presses
SDM-12-05 12 5 18 12 Compact Precision Stages
SDM-20-10 20 10 45 28 Automated Assembly Lines
Application Fields
  • Heavy-Duty/Humanoid Robotics: Leg drive systems, high-load linear push-rods, and powered exoskeletons.
  • Aerospace: Aircraft flap actuators, satellite payload deployment, and Mars rover robotic arms.
  • Automotive Manufacturing: Servo welding guns and heavy-duty stamping feed systems.
  • Injection Molding: Injection mechanisms for all-electric molding machines and die-casting mold control.
  • Defense Systems: Precision aiming systems, turret rotation, and elevation actuators.
Frequently Asked Questions
Q: How do I choose between a Roller Screw and a Ball Screw?
A: Choose a Roller Screw if your application requires massive thrust (especially shock loads) and has limited installation space. Choose a Ball Screw for general-purpose smooth transmission where cost is a primary concern.
Q: Are the Ewellix products you sell 100% genuine?
A: Absolutely. We provide only original Ewellix products with Swedish factory certificates and unique batch numbers. As mission-critical parts, we prioritize authenticity for safety.
Q: Why is the Ewellix Planetary Roller Screw considered a replacement for hydraulics?
A: Its load density is comparable to hydraulic cylinders, but electric drives offer faster response, higher precision, no oil pollution, and no complex hose maintenance.
Q: Do these screws require frequent lubrication?
A: High-performance screws must remain well-lubricated. Ewellix provides specialized long-term grease. We recommend checking or replenishing every 500-1000 hours under heavy-duty, high-frequency use.
Q: What is the typical lead time?
A: Standard ball screws usually ship in 2-4 weeks. Planetary roller screws, due to their complexity, typically require an 8-12 week custom production cycle.

Product Tags:

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