Linear guide systems - 136 Pages

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Catalogue excerpts

Linear guide systems Linear and Motion Solutions

 Open the catalogue to page 1

Guide rails GU..M, GU..MT Guide Rollers RKU Guide Wheels FKU Floating Guide Rollers RKUL Lubricator LUBU Guide pins SAG Guide rails GP..MC Ground guide rails GP..M Guide Rollers PK Guide Wheels FK Guide Rollers GC Cam followers FG (needle) and FGU (roller) Lubricator LUBP Guide rails GU..M, GU. .MT Carriages ROLBLOC BL Carriages BL..DS discharge system Adjustment plates PR Wipers RPT Sand blasted guide rails FS..MT Ground guide rails FS..M Sand blasted guide rails FSH..MT, FSX..MT Ground guide rails FSH..M, FSX..M Guide Rollers FR..EU Guide Rollers FR..EU AS, FR..EU AZ Guide Rollers FRN..EI Guide...

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Technical features Nadella linear systems With this line of products, NADELLA confirms the aim to provide manufacturing solutions tailored to the user’s needs in order to achieve simple automation at a low cost. The process under way of transferring production automation and relevant handling onto increasingly heavier and cumbersome units has prompted us to seek original and flexible components for the different commodity sectors. We have accumulated sound working experience in the following sectors: - marble-working machinery - foundry machinery - metal sheet working machinery - special lifting...

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Technical features Temperature Standard operating temperature range is –20°C up to 150°C. In lower or higher temperature applications please contact Nadella Technical Service. Special care is required if guide rollers are operating at maximum temperature. Aluminium guides General Made by joining an aluminium alloy support element and hardened steel rods that form the sliding surfaces. The best features of the two materials and relevant working technologies are combined to give the lightness of the alloy and the hardness and surface finish of the rods. Guides of this type can be used for structural...

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Technical features carriage e.g. FRL..EU/FRLR..EU Movable rollers allow a little misalignment between the opposite mounted guide rails. Accessories Tables and carriages Standard table and carriages for C-DC and LM systems incorporate a black anodised aluminium plate fitted with guide rollers. Wipers Standard wipers NAID for C-DC rails are made from NBR compound moulded on a steel plate. Another solution is to use one profiled guide rail e.g. FS and on the opposite side a flat rail e.g. GP in connection with rollers GC or PK. Lubricators Are composed by two main parts: a plastic box with the same...

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Technical features Lubrication Bearing lubrication All the guide rollers, except for the FRN..EI, based on needle bearings, are equipped with long life lubricated bearings. This means that the grease inside the bearing is enough for the entire life of the roller guide. The roller guide type FRN..EI, with needle bearings, accommodates the re-lubrication of the bearings. Rail lubrication Rails must be lubricated. This allows reducing the friction, to reach the calculated lifetime of the system and to work at high speed. No or insufficient lubrication will cause rapid deterioration. The typical signal...

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Technical features Calculation procedure Diagram a) load F applied parallel to axis Y Calculation is carried out in two steps, first defining the forces on the most heavily loaded roller and then estimating the safety factors and life. Calculating the loads on the guide rollers In the case of complex load situations, with forces acting in different directions, calculating the reactions on the rollers is difficult and hard to simplify. In the event of the applied load having a direction parallel to one of the co-ordinate axes, the radial Pr and axial Pa components of the reactions on the most loaded...

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Technical features In this case the external load F1, applied at the point of co-ordinate y1 z1, should be considered together with reaction F2 = -F1, applied at the point of co-ordinate y2 z2. Calling Δy the absolute value of y2-y1 and Δz the absolute value of z2-z1, the following formula is used: estimation is performed using overload factor f w as follows: 1.0 – 1.2 smooth operation at low speed at constant load without shocks 1.2 – 1.5 smooth operation with load variation 1.5 – 2.0 operation with small shocks and vibrations 2.0 ~ 4.0 high acceleration, shocks and vibrations Once Pa and Pr...

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Technical features In intermediate cases, when the ratio is included between the extreme values, the equivalent limit load Fk to be considered must be calculated according to ratio k = Pa/Pr. Fk = To check the strength of the guide roller, in relation to the limit load, the safety factor has to be greater than 1 Note: in the following common cases it is not necessary to calculate Fk and the evaluation can be completed easily. Rollers that allow axial movement (FRL, PK, RKYL, RKUL, GC) don't support axial loads. In case of loads acting in the guide roller plane (Fx or Fy acting with Z=0) the axial...

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Technical features Limit load check Guide roller safety coefficient Fk/Pr = 7780 / 3881 = 2 2) The horizontal axis of a manipulator in steel industry The centre of gravity of the vertical axis and load is placed in the middle of the horizontal centre-axis lx and 160 mm distance from the guide axis. The dirty environment and the possibility of shocks lead to the choice to ROLBLOC system. 3) The sliding door of a machine tool (rail on top) Y Guide rollers BL252 are used with guide GU62M Overload factor fw = 1,4 Centre distance lx = 350 mm ly = 400 mm F = 6000 N x = 0 y = -1000 zF = 160 mm Load on...

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Technical features The effective center axis lc is 450 + 32 = 482 mm Nominal Life Nominal life Limit load check The box weight loads the carriage with max axial load. In this load configuration the limit load check calculation can be easily done directly by the Fa value Limit load check For further details, contact the NADELLA Technical Service. Guide rollers FRN(R)32EI with rails FSH32M

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Guide rail order code profile size M ground MT cold drawn and sandblasted MC rough - ground Stainless steel nickel plating one ground end both ground ends standard drilling finished to drawing without holes boring layout A (only GP range) boring layout B (only GP range) chromium plate one ground end both ground ends stainless steel rods profile size SB standard drilling NZ finished to drawing NF without holes

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