Planetary roller screw

heavy-load

Overview
High precision for diverse applications
Moog has over 30 years of experience in designing and manufacturing customized high-precision planetary roller screw drives for a wide range of markets and demanding motion-control applications.

Advantages and features

• ISO3408 Classes 1-3
• Diameter from 15 mm [0.6 in] to 100 mm [3.93 in]
• Pitch from 2 mm [0.08 in] to 42 mm [1.65 in]
• Length up to 4000 mm [157.5 in]
• Load capacity:
  • Dynamic up to 1250 kN
  • Static up to 3500 kN
• Acceleration up to 40 m/s²
• Number of load-carrying threads in mesh: 5–6

What is a planetary roller screw drive?
A planetary roller screw drive is a rolling-element system composed of a threaded shaft (screw) and a nut with internal threads containing several thread rollers with gear teeth at their ends. The rollers engage the screw and the nut and are guided in their orbital motion by two control gear rings mounted at each end of the nut. The planetary roller screw drive is, like the ball screw, a rolling-element device but is not limited by the presence of balls typical of ball screws.

Surface treatment and finishing
Special surface treatments and finishes are available for all products to provide:

• Corrosion protection
• Enhanced resistance (suitable for aerospace and motorsport applications)
• Reduced friction to minimize wear and extend service life

Quick delivery initiative
Moog offers a quick-delivery initiative for customized planetary roller screw drives and keeps the most commonly used sizes in industry (diameters 15 mm to 39 mm) in stock. Ready for shipment from factory in only 6 weeks.

Additional advantages

• Customizable (including small batch quantities) to meet specific performance requirements
• Maximum design and performance flexibility
• Extremely quiet and low-vibration operation due to excellent running characteristics
• High acceleration capability for fast, high-throughput machines
• Can be integrated with Moog's complementary electromechanical products and systems, including servo drives, servomotors and servo controllers
• Expertise and close customer collaboration to deliver demanding solutions

Characteristics / Technical specifications

• Standard: ISO3408 Classes 1-3
• Diameter range: 15 mm to 100 mm (common quick-delivery sizes: 15 mm to 39 mm)
• Pitch: 2 mm to 42 mm
• Maximum length: up to 4000 mm
• Dynamic load capacity: up to 1250 kN
• Static load capacity: up to 3500 kN
• Maximum acceleration: 40 m/s²
• Number of load-carrying threads: 5–6
• Optional surface treatments: corrosion protection, enhanced resistance, friction reduction
• Customizable design and performance options