Screw assemblies
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Screw assemblies Ball screw assemblies BASA/Planetary screw assemblies PLSA

Ball screw assemblies BASA Ball screw assemblies are the efficient solution for the precise conversion of rotary to linear motion. Building on our many years of experience and extensive engineering expertise, we have developed a product range that fulfills the most diverse requirements. No matter whether you need very high linear speeds, maximum load ratings, or minimum installed length, you will always find the right solution in Rexroth’s broad manufacturing spectrum. To make sure your application runs with the utmost accuracy and operational reliability, the individual components in our...

Ball screw assemblies BASA

Notes General notes ▶ Non-horizontal installation There is no self-locking effect due to the low level of friction between the screw and the nut. The components of the product are designed to last for the product's service life; a major defect may nonetheless arise in exceptional cases, and if the moving part (i.e. the screw assembly nut) is not installed horizontally it may fall off. An additional protection against falling loads is therefore required for non-horizontal installation. ▶ Rexroth screw assemblies are components that are used to convert a rotary motion into a linear motion,...

Rexroth screw assemblies are suitable for dynamic linear applications that are moved and positioned reliably and precisely. The machine tool industry and other sectors must observe a series of standards and directives. These requirements can vary significantly worldwide. It is therefore essential to understand the legislation and standards that apply in each DIN EN ISO 12100 This standard is entitled Safety of machinery – General principles for design – Risk assessment and risk reduction. It gives a general overview and contains a guide to the major developments governing machines and their...

Ball screw assemblies BASA | Screw assemblies 7 Ball screw assemblies BASA Ball screw assemblies BASA

Screw assemblies | Ball screw assemblies BASA 

Table of contents: Ball screw assemblies Definition of ball screw assembly 16 Ball screw assemblies for all applications 18 Nuts, miniature series 24 Single nut with flange FEM-E-B 25 Single nut with flange FEM-E-S 26 Adjustable-preload single nut SEM-E-S 27 Cylindrical single nut ZEM-E-S/ZEM-E-K 28 Nuts, Speed Series 30 Single nut with flange with recirculation caps FEP-E-S 31 Pillow block unit SEC-F assembly, aluminum 100 Pillow block unit SEC-L assembly, aluminum 102 Pillow block unit SES-F assembly, steel 104 Pillow block unit SES-L assembly, steel 106 Pillow block unit SEB-F assembly...

10 Screw assemblies | Ball screw assemblies BASA Product overview FEM-E-B / FEM-E-S / SEM-E-S / ZEM-E-S / ZEM-E-K / ZEV-E-S Speed series Single nut with flange with recirculation caps FEP-E-S Standard series Adjustable-preload single nut SEM-E-S Adjustable-preload single nut DIN 69051, Part 5 SEM-E-C Cylindrical single nut ZEM-E-S/ZEM-E-K/ ZEM-E-A Double nut with flange FDM-E-S Double nut with flange DIN 69 051, Part 5 FDM-E-B Standard range, right-hand lead L I Left-hand lead readily available 34

Ball screw assemblies BASA | Screw assemblies 11 Product overview High-performance series Driven single nut with flange FAR-B-S MGS for standard series FEP-E-S FEM-E-S SEM-E-S FDM-E-S MGA for cylindrical single nut ZEM-E-S ZEM-E-K ZEM-E-A MGD for standard series FEM-E-B SEM-E-C FDM-E-B FED-E-B Ball screw assemblies BASA Single nut with flange DIN 69051, Part 5 FED-E-B

12 Screw assemblies | Ball screw assemblies BASA Product overview Precision screw BAS Tolerance grades: T5, T7, T9 Screw length grade T3 (longer versions and larger sizes available on request) Standard, available at short notice on request

Precision screw BAS Tolerance grades: T5, T7, T9 Ball screw assemblies BASA | Screw assemblies 13 Product overview Page 57

Screw assemblies | Ball screw assemblies BASA Product overview Bearing Pillow block unit SEC-F A = SEB-F and SEB-L B = SEC-F and SEC-L C = SES-F and SES-L D = SEE-F

Ball screw assemblies BASA | Screw assemblies 15 Product overview Accessories Single parts Slotted nut NMA, NMZ The load capacities of bearing and ball screw drive must be kept in reasonable balance. Page 124 Assembly tool for NMA/NMZ/NMG Front lube unit Measuring pads Acceptance conditions Ball screw assemblies BASA

Screw assemblies | Ball screw assemblies BASA Product overview Definition of ball screw assembly ISO 3408-1 defines a ball screw assembly as follows: A unit consisting of a ball screw shaft, ball nut and balls which is able to convert rotary motion into linear motion, and vice versa. The basic functioning of a ball screw assembly is easy to describe, but there are numerous different designs and requirements for practical applications. Several innovations and adaptations have contributed to the extension of the product portfolio. Rexroth ball screw assemblies provide design engineers with...

Ball screw assemblies BASA | Screw assemblies 17 Product overview Ball screw assemblies BASA Smooth functioning due to the principle of internal recirculation Especially smooth running due to the optimal pick-up of balls from the raceway Adjustable-pre-tensioned single nut High load rating due to large number of balls Short nut length No protruding parts, nut is easily mounted Smooth outer shell Effective, wiping sealing Large range of series available ex stock

Screw assemblies | Ball screw assemblies BASA Product overview Ball screw assemblies for all applications Drive units You will find further system solutions in our catalog on Rexroth Drive Units. This catalog contains ball screw assemblies with a protecting housing, including versions with integrated screw supports and matching AC servo motors. To perform particularly demanding positioning tasks we have developed the integrated measuring system for ball rail and roller rail systems. This enables us to achieve maximum design flexibility and operating precision.