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Ball screws and ball screw nuts

Ball screws and ball screw nuts
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Ball screws and ball screw nuts

Product catalog summary
Specifications
  • Rolled ball screw sets are available in diameters from Ø6 to Ø80 mm, quality C7, with various pitches and lengths up to 3000 mm. Standard sizes range from Ø12 to Ø40 mm with right-hand threads and double-sided flange cut nuts with preload P0.
  • Material: Steel 50CrMo5QT, surface hardened to 58-62HRC with a hardening depth of 2 mm.
  • Higher preloads, ground screws, and round nut flanges are available upon request. Preload P1 to P4 sets are delivered assembled, while P0 sets are delivered separately.
  • End machining for bearings is available based on customer drawings.
Advantages
  • High efficiency due to rolling friction, suitable for high-speed applications, and high positioning accuracy.
  • Requires lubrication, typically with nuts having a lubrication hole. Not self-locking; vertical sets require brake motors.
Applications
  • Used for converting rotational to linear motion, precise positioning, and drives for fast linear units and screw jacks. Compatible with servo and stepper motors and can replace pneumatic drives.
Installation Notes
  • Ball screw nuts with preload P0 are delivered on a plastic sleeve; improper installation can cause damage. Nuts with higher preloads are pre-installed; flange direction must be specified.
Technical Parameters and Calculations
  • Includes permissible load and axial force calculations, considering buckling and critical speed. Critical speed should not exceed 80% of the calculated value to avoid resonant vibrations.
Ball Screw Types
  • Various types of ball screw nuts are available, including standard flange, double-length flange, low-noise flange, and compact flange nuts.
Data Tables
  • Tables provide detailed specifications for ball screws and nuts, including thread diameter, pitch, circuits, and load capacities.
Overview
This document provides technical specifications for various ball screw nut types, including FDU, FSC, FSE, FSK, RSK, and RSU models, detailing thread dimensions, pitch, load capacities, and design features.
Specifications
  • Ball Screw Nut Types: Covers multiple types, including double-flange (FDU), low-noise flange (FSC), high-pitch flange (FSE), compact flange (FSK), compact round (RSK), and single round (RSU) nuts.
  • Thread and Pitch: Specifies thread diameter and pitch for each nut type.
  • Load Capacities: Provides dynamic and static load capacities for each model.
  • Design Features: Includes flange dimensions, lubrication holes, and preload options (P0..P4).
Procedures and Norms
  • DIN Standards: FDU and FSC nuts conform to DIN 69051 standards.
  • Design Changes: Document reserves the right to make changes without liability for errors.
Recommendations
  • Preferred Types: Certain models are marked as preferred and usually in stock.
  • Lubrication: Lubrication holes are specified for maintenance, except for FSK and RSK models.
Key Data from Tables
  • Model Specifications: Lists models with dimensions, load capacities, and design features.
  • Load Capacity: Dynamic and static load capacities are crucial for determining suitability for applications.
See more

Catalog excerpts

Ball screws and ball screw nuts-1

Kugelumlaufspindeln und -muttern Ball screws and ball screw nuts Eigenschaften • Wir führen gerollte Kugelumlauftriebe mit Ø6 bis Ø80 mm in Qualität C7 mit verschiedensten Steigungen als Rechts- und teilweise auch Linksgewinde in Längen bis 3000 mm • Standard sind Ø12 bis Ø40 mm, Rechtsgewinde, Muttern mit beidseitiger Abflachung und Vorspannung P0 • Material: Stahl 50CrMo5QT, Oberfläche gehärtet 58-62HRC, EHT 2 mm vom Gewindegrund • In der folgenden Übersicht sind meist ab Lager lieferbare Vorzugstypen rot gekennzeichnet • höhere Vorspannungen, geschliffene Spindeln, runde Mutter-Flansche usw. auf Anfrage • Je höher die Vorspannung der Mutter umso genauer ist die Positionierung umso geringer aber auch der Wirkungsgrad • Kugelumlauftriebe mit Vorspannungen P1 bis P4 werden nur im montierten Zustand geliefert, bei Vorspannung P0 liefern wir Spindel und Mutter separat • Endenbearbeitung für Fest- und Loslager nach Ihren Zeichnungen auf Anfrage, Beispiele siehe Seite V 061 und V 062 • bei vertikalem Einbau und gedrückten/gehobenen Lasten Spindelknickung beachten • bei hohen Drehzahlen Spindeltorsion beachten • We provide various rolled ball screw sets: ranging from Ø 6 to Ø 80 mm, in quality C7, with various pitches, as right-hand and some left-hand threads, in lengths up to 3000 mm • Standard products are Ø 12 to Ø 40 mm, right-hand thread, nuts with double-sided flange cut and preload of P0 • Material: steel 50CrMo5QT, surface hardened 58-62HRC, hardening depth 2 mm from thread root • In the following overview, the preferred types which are mostly available from stock are marked in red • Higher preloads, ground screws, round nut flanges, etc. are available on request • A higher preload of the nut enables a more precise positioning but leads to less efficiency • Ball screw sets with preload P1 to P4 are delivered only in their assembled state. For preload P0, we deliver the screw and nut separately. • End machining for fixed and floating bearings made according to your drawings are available on request. For examples, refer to pages V 061 and V 062 • Note that screws can buckle when installed vertically and placed under pressure or lifting loads • Take the screw torsion into account when operating at high turning speeds • Rollreibung im Gewinde, daher sehr hoher Wirkungsgrad • Geeignet für hohe Geschwindigkeiten • Hohe Positioniergenauigkeit • Schmierung erforderlich – meist Muttern mit Schmierbohrung. • Keine Selbsthemmung! Vertikale Kugelumlauftriebe müssen mit Bremsmotoren verbaut werden • Rolling friction in the thread – thus very high efficiency • Suitable for high speeds • High positioning accuracy • Lubrication required – usually nuts with lubrication hole • No self-locking - vertical ball screw sets must be mounted with brake motors Anwendungen • Übertragung von rotierenden in lineare Bewegungen • Sehr exakte Positionierungen in Verbindung mit Vorspannungen P1 bis P4 • Antriebe von schnellen Lineareinheiten und Spindelhubgetrieben • Gut geeignet für Kombination mit Servo- und Schrittmotoren • Ersatz von pneumatischen Antrieben Verzahnungen und Spindeln | Gears and screws Montagehinweis Achtung! Kugelumlaufmuttern mit Vorspannung P0 werden auf einer Kunststoffhülse geliefert. Zur Montage die Mutter vorsichtig auf die Spindel drehen. Dabei wird die Hülse herausgeschoben. Unsachgemäße Montage kann zum Verlust von Kugeln und damit zur Zerstörung der Mutter führen. Muttern mit höheren Vorspannungen werden montiert geliefert → Flanschrichtung angeben! Applications • Transmission of rotational to linear motions • Very precise positioning in conjunction with preload of P1 to P4 • Drives for fast linear units and screw jacks • Well suited for usage combined with servo and stepper motors • Replacement for pneumatic drives Installation note Attention! Ball screw nuts with preload P0 are delivered on a plastic sleeve. To install, gently rotate the nut onto the screw. This will push the sleeve off. Improper installation can lead to the loss of balls and the destruction of the nut. Nuts with higher preloads are delivered already installed. → Please specify the flange direction. Axiales Spiel in Abhängigkeit von der Vorspannung Axial backlash in relation to the preload gerollte Spindeln C7 geschliffene Spindeln C0-C5 rolled screws C7 ground screws C0-C5 Vorspannung P0 P1 P0 P1 Preload SpindelØ [mm] [mm] [mm] [mm] ScrewØ 6 - 14 mm 0,05 0,00 0,015 0,00 15 - 50 mm 0,08 0,00 0,025 0,00 50 - 80 mm 0,12 0,00 0,050 0,0 Ausgabe 2017  –  Druckfehler, Maß- und Konstruktionsänderungen vorbehalten. 2017 edition

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Ball screws and ball screw nuts-2

Kugelumlaufmuttern | Ball screw nuts FSU ** Mutter ohne Abstreifer | Nut without wiper R = Rechtsgewinde | right-hand thread R/L = Rechts- und Linksgewinde lieferbar | available in right- or left-hand thread rot = Vorzugstype meist ab Lager | red = preferred type: usually in stock Kugelumlaufmuttern (siehe Seite V 055 - V 060) | Ball scew nuts (see page V 055 - V 060) Bestell-Nr. | Part no. Kugelaumlaufspindeln | Ball screws Ausgabe 2017  –  Druckfehler, Maß- und Konstruktionsänderungen vorbehalten. 2017 edition – We reserve the right to make dimensional and structural changes. We accept no liability...

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Ball screws and ball screw nuts-3

Kugelumlaufmutter - Typen Ball screw types Typen | Types Beschreibung Description FSU Standard Flanschmutter nach DIN 69051 Standard flange nut according to DIN 69051 FDU Doppelt lange Flanschmutter nach DIN 69051 Double-length flange nut according to DIN 69051 FSC Flanschmutter mit leisem Lauf Low-noise flange nut FSE Flaschmutter für hohe Steigungen (schnell) High-pitch (quick) flange nut FSK kompakte Flanschmutter ohne Schmierbohrung Compact flange nut without lubrication hole RSK kompakte Rundmutter ohne Schmierbohrung, ohne Abstreifer Compact round nut without lubrication hole, without wipers...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.