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RS Series Inverted Roller Screw

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RS Series Inverted Roller Screw


Inverted Roller Screw – Short Description

  • Principle: Same as standard planetary roller screws – rollers orbit between screw and nut, converting rotation to linear motion.

  • Drive: Input can be on the screw (screw+rollers move axially) or on the nut (nut translates).

  • Advantages: Ultra‑compact axial length, high load capacity, high rigidity, high speed & acceleration, low friction, fully customisable nut designs.

  • Sizes: Screw diameters Ø8–80 mm, multiple lead options, nuts made to order.


SYNOPTIC CHART


ParameterCore Value
Lead1 ~ 16 (standard design)
Nominal DiameterØ8 ~ Ø150
Outer DiameterØ24 ~ Ø142 (minimum recommended dimension)
Length87 ~ 600
MaterialHardened Steel, Stainless Steel
Hardness58–62 HRC (650–750 HV)
Dynamic Load Capacity39% higher than conventional designs
Static Load Capacity60% higher than conventional designs
RigidityExtremely High
Impact ResistanceVery Good
Maintenance RequirementVery Low Maintenance



Typical Applications


Robotic joints, servo‑presses, resistance welding guns, aerospace flight‑control actuators, precision machine tools, wind turbine pitch systems, and heavy‑duty valve actuators.


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