SKF 紧凑型倒置滚柱丝杠-SKF compact inverted roller screw

SKF compact inverted roller screwSKF compact inverted roller screws are designed to pro-vide powerful electromechan-ical actuation where compact-ness and high load capability are prerequisites. In applica-tions such as factory automa-tion, car assembly lines, oil & gas subsea, aerospace, etc., the compact inverted roller screw – incorporated inside an electromechanical actuator –can advantageously replace hydraulic or pneumatic actua-tion, providing the benefits of electronic control.How it worksThe compact inverted roller screw works onthe same principle as a planetary rollerscrew, with the rollers rotation being syn-chronized with the threaded shaft throughtoothed rings. Either nut or shaft can be ro-tated by an electric motor, the non-rotatingcomponent thus acting as the push tube ofan actuator. The application loads acting onthe translating push tube transit throughthe planetary rollers to the rotating shaft ornut.T oothed rings and guiding rings ensurethe rolling motion and the even circumfer-ential position of the rollers, for perfect loaddistribution and for eliminating any parasiticfriction between rollers.BenefitsVery small lead, down to1,00 mm,whileproviding a high load carrying capacityHigh speedcapabilityGuiding and sealing functions easily inte-grated on smooth surface of nut or shaft,resulting in high performance sealingCompactness, low weight and reducednumber of parts in overall systemCustomized attachment between electricrotor and screw components, and easyrotor integrationScrew or nutdirectly used as push tubeLong service life, increased reliability im-proving customer installation productivityReduced requirements for electric motortorque to reach high load actuationEnvironmentally friendly solutionThe compact inverted roller screw is a solu-tion provider product for specific applica-tions where a small lead is required.SKF – The Knowledge EngineeringCompanyknowledge to propose optimized solutions. The compact inverted roller screw workson the same principle as a planetary rollerscrew, with the roller’s rotation being syn-chronized with the threaded shaft throughtoothed rings. Either nut or shaft can berotated by an electric motor to allow thenon-rotating component to act as the pushtube of an actuator. The application loadsacting on the translating push tube travelthrough the planetary rollers to the rotatingshaft or nut.T oothed rings and guiding rings ensurethe rolling motion and even circumferentialposition of the rollers for perfect load distri-bution and to eliminate any parasitic frictionbetween rollersSKF compact inverted roller screws are designed to pro-vide powerful electromechan-ical actuation where compact-ness and high load capability are prerequisites. In applica-tions such as factory automa-tion, car assembly lines, oil & gas subsea, aerospace, etc., the compact inverted roller screw – incorporated inside an electromechanical actuator – can replace hydraulic or pneumatic actuation, provi-ding the benefits of electronic control.Compact, low weight and reduced num-ber of parts in overall systemLong service life and increased reliability improve customer installation productivity The compact inverted roller screw is a solu-tion provided for specific applications where a small lead is required.SKF is the leading supplier of roller screws, and also offers ball screws from miniature dimensions to large sizes. Through our long history of cooperation with industrial equip-ment suppliers, we have developed a unique ability to propose optimized solutions.®SKF is a registered trademark of the SKF Group.©SKF Group 2010The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permis -sion is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained herein.PUB MT/P8 10592 EN · August 2010Definitions:d 0=screw pitch diameter [mm] lead is right-hand [mm]l =reference maximum threaded length[mm]L =indicative maximum length [mm]D =recommended minimum outerdiameter [mm]D p =nominal nut thread diameter [mm]S =reference maximum stroke [mm]Availability and compatibilitySKF compact inverted roller screw is cur -rently available with screw pitch diameter d 0between 12 and 120 mm, lead from 1 to 18 mm, and maximum stroke up to175 mm depending on screw dimensions.Not all combinations of shaft pitch diam -eter and lead are possible. Please consult SKF for feasibility and recommendations.As a first approach for product selection, designers can consider all planetary roller screw sizes available in SKF catalog, with screw pitch diameter d 0 less than 48 mm but with 3 starts instead of 5, or 4 starts in -stead of 6, while maintaining the same load carrying capacities. For these sizes, the nut dimensions can remain identical to those specified in the catalog, or adjusted upon request. The maximum possible stroke should be confirmed by SKF.The compact inverted roller screw is also available for specific sizes with d 0 greater than 48 mm, and up to 120 mm.Please contact your local sales office for technical support.SKF compact inverted roller screw view with engine and bearingPh = lead [mm]The SKF compact inverted roller screw is currently available with screw pitch diameter d 0 between 12 and 120 mm, lead from 1 to 18 mm, and maximum stroke up to 175 mm depending on screw dimensions.When first approaching product selec-tion, designers can consider all planetary roller screw sizes available in the SKF catalog, with screw pitch diameter d 0 less than 48 mm but with 3 starts instead of 5, or 4 starts instead of 6, while maintai-ning the same load carrying capacities. For these sizes, the nut dimensions can remain identical t o those specified in the catalog, or adjusted upon request.The maximum possible stroke should bec onfirmed by SKF.SKF compact inverted roller screw view with electric motor and bearings。