GTR
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TORSIONALLY RIGID COUPLING Up to 130.000 Nm of torque and 205 mm bore GTR

GTR - torsionally rigid coupling: introduction Made in steel fully turned with standard treatment of phosphating. Disc pack in stainless steel. High torsional rigidity. Maintenance and wear free. Version with double disc pack: GTR/D. High torque possible. ON REQUEST Use in applications with high operation temperatures (> 150 °C) possible. Specific treatments or version in full stainless steel possible. Reinforced couplings for specific requirements and heavy applications. Connection to torque limiter (safety coupling) range possible. Designed to suit applications where high reliability,...

Version with personalized spacer for a specific D.B.S.E. (page 12). Manufacturing with internal hubs in order to reduce the axial dimensions. Manufacturing in addition to the /SG torque limiters range, with simple and/or double disc pack. Solution with adaptors both in simple and double version, for easy substitution of disc packs without moving the hubs (in accordance with directive API610). Solution for vertical mounting, where the spacer (GTR/D or gtr/dbse) has to be supported to avoid the weight by pre-loading the disc pack.

GTR - torsionally rigid coupling: technical data ■ DIMENSIONS

TECHNICAL CHARACTERISTICS GTR/S ■ • Qstd (*1) - Different dimensions available on request. • Max speed (*2) - For higher speeds please contact our technical department. • Weights refer to to the coupling with pilot bore. • Inertias refer to the coupling with maximum bore. • Choice and availability of different hub connection type see pages 4 and 5.

GTR/DBSE - torsionally rigid coupling with spacer: introduction Made in steel and fully turned. Galvanizing corrosion proofing. Disk pack in stainless steel. Maintenance and wear free. Personalized spacer version for a specific D.B.SE. Welded spacer for high torsional rigidity. ON REQUEST Use in applications with high operation temperatures (> 150 °C) possible. Dynamic balancing up to Q=2,5 possible. Customized versions for specific needs. Different hub connection type possible (pages 4 and 5). This backlash free coupling with spacer , called the GTR/DBSE (Distance Between Shaft Ends),...

DIMENSIONS Size TECHNICAL CHARACTERISTICS ■ Size 13 A On request NOTES ■ • Max speeds (*2) - For higher speeds please contact our technical department. • Choice and availability of different hub connection type see pages 4 and 5.

GTR/DBSE - torsionally rigid coupling with spacer: additional information The model with spacer "GTR/DBSE", in addition to being essential for connecting elements of transmissions situated apart , it is able (unlike the classic model GTR/S) to recover, as needed, up to twice the angular misalignment (figure 2) and axial (figure 3) or a high radial misalignment (figure 1) according to the formula: Where: K = Radial misalignment [mm] Ltot = Total length GTR/DBSE coupling [mm] N = Useful length of an half-hub [mm] P = Useful part of elastic element [mm] α = Angular misalignment GTR/S [ ° ] It...

GTR & GTR/DBSE - torsionally rigid coupling: additional information DIMENSIONING For pre-selection of the coupling's size you can use the generic formula indicated on page 6. The GTR coupling will accomodate momentary peak torque "C.C." of 2,5 times than nominal torque. If the C.C. is higher than 2,5 times than the nominal torque, it is necessary to choose the coupling using the following formula: C'nom= Where: C’nom = theoretic nominal torque of the coupling [Nm] C nom = effective nominal torque of the coupling [Nm] C.C. = peak torque [Nm] The nominal torque indicated on the catalogue for...

GTR & GTR/DBSE - torsionally rigid coupling: additional information The rated outputs on the catalogue refer to normal use without shocks and with shafts well-aligned with the environmental temperature The value of axial thrust (+- 20%) is relevant to the axial movement (graphic 7). The maximum speed of the coupling is influenced by several factors: • Peripheral speed of the coupling; • Weight of the coupling; • Length of the spacer (pages 12-14); • Rigidity of the coupling; • Quality of balance. In general, for most applications dynamic balancing is NOT required; in other cases there is...