Screw assemblies
280Pages

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 New features at a glance New features at a glance Discontinuation of 4 nut types In the standard series, single nuts with flange with recirculation cap FSZ-E-S and FSZ-E-B have been discontinued, Introduction of the B flange The C flange in the series FEM-E-C and FDM-E-C is replaced by the B flange. The nuts of the new design are available now under the designation FEM-E-B and FDM-E-B. All technical data remain unchanged. This change is necessary as the market and DIN favor the B flange.

Ball screw assemblies BASA | Screw assemblies 9 Table of contents Product overview 10 Nuts and Nut Housings 10 Screws 12 Bearing 14 Accessories 15 Definition of ball screw assembly 16 Ball screw assemblies for all applications 18 Sample applications Nuts, miniature series Overview of formats Single nut with flange FEM-E-B Single nut with flange FEM-E-S Adjustable-preload single nut SEM-E-S Cylindrical single nut ZEM-E-S/ZEM-E-K Screw-in nut ZEV-E-S Nuts, Speed Series Single nut with flange with recirculation caps FEP-E-S Nuts, standard series Overview of formats Single nut with flange...

Screw assemblies | Ball screw assemblies BASA Product overview Nuts and Nut Housings Nuts Miniature series FEM-E-B / FEM-E-S / SEM-E-S / ZEM-E-S / ZEM-E-K / ZEV-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 Size SEM-E-S Adjustable-preload single nut SEM-E-S Single nut with flange DIN 69 051, Part 5 FEM-E-B Single nut with flange FEM-E-S ZEM-E-S ZEM-E-K Standard series Single nut with flange with recirculation caps...

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

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

Ball screw assemblies BASA | Screw assemblies 13 Product overview Precision screw BAS Tolerance grades: T5, T7, T9 Ball screw assemblies BASA Standard, available at short notice On request Maximum length (assembled) on request Screw ends

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