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ROLLED AND GROUND BALLSCREWS

ROLLED AND GROUND BALLSCREWS
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ROLLED AND GROUND BALLSCREWS

Product catalog summary
Overview: This document outlines the technical specifications and guidelines for rolled and ground ballscrews, support units, and precision lock nuts. It includes order codes, accuracy and preload specifications, size tables for various models, and recommendations for machining and mounting.
Order Codes: Nut and screw order codes are detailed, specifying parameters such as preload value, accuracy grade, number of turns, length, lead, diameter, and type.
Accuracy and Preload: The document defines positioning accuracy, including mean travel deviation and travel variation according to JIS B 1192 standards. It discusses axial play and preload, highlighting the importance of appropriate preload for maintaining stiffness and positioning precision. A table provides spring force reference and axial play for different grades and diameters.
Size Tables: Detailed size tables are provided for models SFNU, OFNU, DFU, SFNI, SFS, and others, including threading dimensions, dynamic and static loading ratings, and material specifications.
Support Units: Descriptions of fixed and floated side support units are included, covering models BK, BF, EK, EF, FK, FF, AK, and AF. Recommendations for ball screw end machining for both fixed and floated sides are provided.
Precision Lock Nuts: The document details multiple designs and major data for precision lock nuts, with tables for admissible axial load and torque, and series specifications including MLT/K, MLT/N, MLT/R, MLT/F, MLT/A, MLT/FA, MLT/RN, and MLT/AN.
Notes: Additional notes and recommendations for the use and maintenance of the components are provided.
Precision Lock Nuts Overview: Specifications for various series of precision lock nuts, including MLT/A, MLT/FA, MLT/RN, and MLT/AN, are detailed. Each series is designed for specific applications and environments, focusing on precision, material composition, and locking mechanisms.
MLT/A Series: Features a three-point axial locking mechanism suitable for special environments, made from 42CrMo 45-40Cr material with a hardness of HRC28°-32° and thread precision of ISO4H. The run-out is maintained at 0.005mm.
MLT/FA Series: These lock nuts have four grooves, designed for high precision and easy installation, with similar material and hardness specifications as the MLT/A series.
MLT/RN Series: Characterized by a square shape, suitable for bearing supporting seats, with consistent material and hardness specifications.
MLT/AN Series: Features a simple structure with simultaneous manufacturing of the inner thread and end surface to ensure precision, with consistent material and hardness specifications.
Material and Precision: All series are made from 42CrMo 45-40Cr material with a hardness of HRC28°-32° and thread precision of ISO4H. The run-out is consistently maintained at 0.005mm across all series.
Contact Information: For customer service, contact [email protected] or call Tel. 0541 775768. The company is located at Via Emilia 78-80, 47921 Rimini (RN), and more information can be found at melucci.it.
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Catalog excerpts

ROLLED AND GROUND BALLSCREWS-1

VITI A RICIRCOLO DI SFERE, SUPPORTI D’ESTREMITÀ E GHIERE DI PRECISIONE VITI A RICIRCOLO DI SFERE RULLATE E RETTIFICATE ROLLED AND GROUND BALLSCREWS SUPPORTI DI ESTREMITÀ SUPORT UNIT GHIERE DI PRECISIONE PRECISION LOCK NUT

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ROLLED AND GROUND BALLSCREWS-3

INDICE CONTENT pag. 4 Codice d'ordine della chiocciola Nut order code pag. 24 AF - Lato supportato AF - Supported side pag. 25 Supporto WBK per alti carichi WBK High Load Support Codice d'ordine della vite Screw order code pag. 5 Precisione e precarico Accuracy and preload pag. 7 Dimensioni modello SFNU Size Table of SFNU pag. 8 Dimensioni modello OFNU Size Table of OFNU pag. 9 Dimensioni modello DFU Size Table of DFU pag. 10 Dimensioni modello SFNI Size Table of SFNI pag. 11 Dimensioni modello SFS Size Table of SFS pag. 12 Dimensioni modello SFA Size Table of SFA pag. 14 Dimensioni modello DFS...

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ROLLED AND GROUND BALLSCREWS-4

VITI A RICIRCOLO DI SFERE BALL SCREWS CODICE D'ORDINE DELLA CHIOCCIOLA NUT ORDER CODE S F NU 25 05 T4 P1 Precario - Preload value (Table 4.2) Numero di giri - Number of Turns Passo - Lead Diametro - Diameter Tipo - Type: NU,U,S,Y,K, A Modello - Model: F- con flangia / with flange C- senza flangia / without flange S - single | D - double | O - offset CODICE D'ORDINE DELLA VITE SCREW ORDER CODE S C R 25 05 1000 C7 Grado di precisione - Accuracy Grade Lunghezza - Lenght Passo - Lead Diametro - Diameter R- destra / right S - sinistra / left C - passo standard / standard lead S-passo lungo / long...

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ROLLED AND GROUND BALLSCREWS-5

VITI A RICIRCOLO DI SFERE BALL SCREWS 1 - PRECISIONE E PRECARICO ACCURACY AND PRELOAD 1.1 Precisione di posizionamento 1.1 Lead Travel Accuracy Significato di errore totale (±E) ed errore incrementale (e) (JIS B 1192) Errore ogni 300mm (e300) ed valore errore totale (e2π) (JIS B 1192) Mean Travel Deviation (±E) and Travel Variation (e) (JIS B 1192) Variation per 300mm (e300) and Wobble Error (e2π) (JIS B 1192) 1.1.1 Diagramma della precisione sul passo Diagram of Lead Accurac

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ROLLED AND GROUND BALLSCREWS-6

VITI A RICIRCOLO DI SFERE BALL SCREWS 1.2 Gioco assiale/precarico L’abbinamento del gioco assiale in riferimento al precarico sono riportati nella tabella sottostante. 1.2 Axial Play/preload Axial play of precision ball screw is shown as follows. Grade - Grado Axial Play - Gioco assiale Preload - Precarico Light - Leggero Medium - Medio Heavy - Pesante L’eccessivo precarico aumenta l’attrito tra le sfere che genera calore, riducendone la durata. Viceversa, un non adeguato precarico riduce la rigidezza sino a perdere la precisione di posizionamento richiesta. Si consiglia di ridurre il gioco assiale...

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ROLLED AND GROUND BALLSCREWS-7

VITI A RICIRCOLO DI SFERE BALL SCREWS DIMENSIONI MODELLO SFNU SIZE TABLE OF SFNU l: Lead - Passo Da: Ball Diameter - Diametro sfere n: Circuits number - Numero di circuiti Unit:mm Modello Model Dimensioni filettatura Threading Dimension Capacità di carico statico Loading Rating Coa(kfg) Capacità  di carico dinamico Loading Rating Ca(kfg) Ball Screw profile SCR Can produce left helix Ball screw material DIN C55 Nut material DIN 18CrMo4h Steel balls

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ROLLED AND GROUND BALLSCREWS-8

VITI A RICIRCOLO DI SFERE BALL SCREWS DIMENSIONI MODELLO OFNU SIZE TABLE OF OFNU l: Lead - Passo Da: Ball Diameter - Diametro sfere n: Circuits number - Numero di circuiti Unit:mm Modello Model Dimensioni filettatura Threading Dimension Capacità  di carico dinamico Loading Rating Ca(kfg) Capacità di carico statico Loading Rating Coa(kfg) Ball Screw profile SCR Ball screw material DIN C55 Nut material DIN 18CrMo4h Steel balls material

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ROLLED AND GROUND BALLSCREWS-9

VITI A RICIRCOLO DI SFERE BALL SCREWS DIMENSIONI MODELLO DFU SIZE TABLE OF DFU l: Lead - Passo Da: Ball Diameter - Diametro sfere n: Circuits number - Numero di circuiti Unit:mm Modello Model Dimensioni filettatura Threading Dimension DFUR 3210-4 DFUR 4005-4 DFUR 4010-4 DFUR 5010-4 DFUR 6310-4 DFUR 6320-4 DFUR 8010-4 DFUR 8020-4 Capacità di carico statico Loading Rating Coa(kfg) Capacità  di carico dinamico Loading Rating Ca(kfg) Ball Screw profile SCR Can produce left helix Ball screw material DIN C55 Nut material DIN 18Cr

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ROLLED AND GROUND BALLSCREWS-10

VITI A RICIRCOLO DI SFERE BALL SCREWS DIMENSIONI MODELLO SFNI SIZE TABLE OF SFNI l: Lead - Passo Da: Ball Diameter - Diametro sfere n: Circuits number - Numero di circuiti Modello Model Dimensioni filettatura Threading Dimension Capacità  di carico dinamico Loading Rating Ca(kfg) Capacità di carico statico Loading Rating Coa(kfg) Ball Screw profile SCR Ball screw material DIN C55 Nut material DIN 18CrMo4h Steel balls mater

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ROLLED AND GROUND BALLSCREWS-11

VITI A RICIRCOLO DI SFERE BALL SCREWS DIMENSIONI MODELLO SFS SIZE TABLE OF SFS 30 Q(Oil hole) l: Lead - Passo Da: Ball Diameter - Diametro sfere n: Circuits number - Numero di circuiti Unit:mm Modello Model Capacità  di carico dinamico Loading Rating Ca(kfg) Dimensioni filettatura Threading Dimension Ball Screw profile SSR Ball Screw profile SCR Capacità di carico statico Loading Rating Coa(kfg)

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ROLLED AND GROUND BALLSCREWS-12

VITI A RICIRCOLO DI SFERE BALL SCREWS DIMENSIONI MODELLO SFA SIZE TABLE OF SFA l: Lead - Passo Da: Ball Diameter - Diametro sfere n: Circuits number - Numero di circuiti Modello Model Dimensioni filettatura Threading Dimension Capacità  di carico dinamico Loading Rating Ca(kfg) Capacità di carico statico Loading Rating Coa(kfg)

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ROLLED AND GROUND BALLSCREWS-13

VITI A RICIRCOLO DI SFERE BALL SCREWS DIMENSIONI MODELLO SFA SIZE TABLE OF SFA Unit:mm Modello Model Dimensioni filettatura Threading Dimension Capacità  di carico dinamico Loading Rating Ca(kfg) Capacità di carico statico Loading Rating Coa(kfg) Ball Screw profile SSR Ball Screw profile SCR Ball screw material DIN C55 Nut material

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ROLLED AND GROUND BALLSCREWS-14

VITI A RICIRCOLO DI SFERE BALL SCREWS DIMENSIONI MODELLO DFS SIZE TABLE OF DFS l: Lead - Passo Da: Ball Diameter - Diametro sfere n: Circuits number - Numero di circuiti Modello Model Dimensioni filettatura Threading Dimension Capacità  di carico dinamico Loading Rating Ca(kfg) Capacità di carico statico Loading Rating Coa(kfg) Ball Screw profile SSR Ball screw material DIN C55 Nut mat

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