MG Monoguide recirculating linear rollers bearing Next generation “Evolution is done”

Grinding machine mod. PLATINUM TH made from Rosa Ermando SpA for MG monoguide slide ways finishing

PRODUCT DESCRIPTION AND FEATURES OF MG MONOGUIDES Product identification codes p. 8 GENERAL TECHNICAL DATA Accuracy classes and tolerances p. 10 Allowed acceleration and speed p. 11 Static and dynamic load capacity. Allowable moments p. 14 Top lubrication - Size table p. 15 Guides that can be screwed from the bottom p. 15 DESIGN OF THE RECIRCULATING LINEAR ROLLER BEARING Calculation base - Definition of dynamic and static loads Calculation programme to design the monoguide P- 32 Accuracy of assembly surfaces p. 50

MG 45 LC Monoguide on CNC lathe (Tecno V photos - kind permit)

MG MONOGUIDE PRODUCT DESCRIPTION AND FEATURES Product identification codes

1. The new MG monoguide manufactured by Rosa Sistemi is an advanced technical solution for high-tech industries. The monoguide is suitable for high loads, great stiffness and high reliability, especially for machine tools. STREAMLINED ROLLER SLIDE WAYS The geometries and the directions of the roller slide ways were calculated by means of FEM according to each individual preload, thus assuring the best performances of load capacities and obtainable accuracies all the time. ROLLERS WITH LOGARITHMIC PROFILE The rollers are manufactured according to the most recent knowledge about rolling element-related...

INTERCHANGEABILITY The narrow construction tolerances assure the interchangeability of the carriages. Both sides of the guide can be used as a reference. ADDITIONAL PROTECTIONS Upon demand, it is possible to supply additional wipers and scrapers. LONG - LIFE LUBRICATION A specific additional head allows long lubrication duration, thus preventing additional costs for the purchase of a lubrication station. ANTICORROSION COATING The carriages and the guides can be supplied with a HCP anticorrosion coating. METAL PROTECTIVE STRIP The strip that protects and covers the fastening holes prevents closing...

1.1 Product identification codes MONOGUIDE MG BESTELLANGABEN MONOGUIDE MG BESTELLANGABEN M.720.03 D Product type EA: Extra Coupling FB: Fixing from the Bottom Rail size (25,35,45,55,65) Kunde: Ort: Preload (P2, P3) Block type Kunde: Ort: SC: narrow-short LC: wide-short Accuracy class (Q0, Q1, Q2, Q3) SL: narrow-long LL: wide-long Monoguide Rail lenght (mm) Number of carriages on the rail Monoguide Baugrösse 25 35 45 55 Baugrösse 25 35 45 55 Typ Führungswagen LC LL SC SL Typ Führungswagen LC LL SC SL Führungswagen pro Order sheet x……… x………. Führungswagen pro Führungsschiene x……… x………. Führungsschiene...

GENERAL TECHNICAL DATA Accuracy classes and tolerances Sliding accuracy Preload classes Allowed acceleration and speed Operating temperatures Construction materials HCP anticorrosion coating Size tables Static and dynamic load capacity. Allowable moments Top lubrication – Size table Guides that can be screwed from the bottom Life Stiffness diagram

2. 2.1 Accuracy classes and tolerances The MG monorails are available in 4 accuracy classes: Q0, Q1, Q2, and Q3 The tolerances in assembly dimensions are measured from the centre of the block and in the same position of the rail The sliding accuracy of the carriage over the guide is measured from the centre of the carriage Tolerances Accuracy class Tolerance on H dimension ±5 (variation ad to nominal diμm mension) Tolerance on A1 dimension ±5 (variation ad to nominal diμm mension) Variation on H dimension 3 μm between block of the same rail Variation on A1 dimension between block of the same...

Preload class Accuracy class P2 for high stiffness with average-high loads and variable vibrations P3 for maximum stiffness with high impact stresses or vibrations and high loads/moments 2.4 Allowed acceleration and speed Speed Higher accelerations and speeds are possible according to preload, load, lubrication and assembly position values. In these cases, it is advisable to contact our engineering department. 2.5 Operating temperatures Allowable operating temperatures 2.6 Construction materials Carriage: Guide: Rollers: Plastic parts: Hardened alloy steel Hardened steel Hardened bearing steel...

2.8 Size tables LC/LL - block type Dimensions (according to the DIN 645/1 standards) Size

SC/SL - block type Dimensions (according to the DIN 645/1 standards) Size

2.9 Static and dynamic load capacity. Allowable moments LC/LL

2.10 Top lubrication - size table All carriage types are prepared for top lubrication. SC and SL models are provided with a spacer equipped with O-ring to compensate for the difference in height. Top lubrication must be specified in the order. Please see the instructions on page 8. It is not possible to drill the heads after the assembly, as the chips created during this operation may clog the lubrication channels. 2.11 Guides that can be screwed from the bottom They are available for all accuracy classes As for L4 and L5 dimensions, see tables on page 12 - 13

2.12 Life Rosa Sistemi entrusted the machine tool division of the laboratory (WZL) within the Institute of Technology of Aquisgrana with the task of performing the life tests for the new MG monoguide. During the endurance tests, the stiffness of the carriage was measured, as well. Test bench The test provides for the simultaneous check of 4 guides, each of which is equipped with a carriage. Technical data Test conditions for the linear roller bearing according to the standards Test speed Maximum stroke According to the DIN 631 standards, endurance is considered as to be achieved if the surfaces...

Setting of the test to measure the stiffness Piezoelectric sensor Guide The force is measured by means of a piezoelectric sensor that is installed between the hydraulic cylinder and the assembly plate where the carriage is fastened. To correctly measure the deformation, an incremental optical ruler was used together with four jumpered strainmeters with a 0.1µ resolution. To have a reliable deformation – force curve, eight measurement cycles are performed for each type of carriage, and then the average values will be calculated. Strain meter Assembly plate Measurement results The measurement of...