Summary of Contents for DRIVE SOLUTIONS TRASCO GRMP Series
- Page 1 TRASCO Couplings ® USER AND MAINTENANCE MANUAL SIT S.p.A. Viale A. Volta, 2 - 20090 Cusago (MI) - Italy Tel. +39.02891441 Fax +39.0289144291 - export@sitspa.it www.sitspa.com...
-
Page 2: Table Of Contents
INDEX Page GENERAL INFORMATION PURPOSE OF THE DOCUMENT PROPER USE WARNING SYMBOLS FOR SAFETY GENERAL ADVICE IN CASE OF DANGER REFERENCE LAWS AND STANDARDS CHARACTERISTICS OF TRASCO COUPLINGS ® HUBS 2.1.1 GRMP SERIES HUBS 2.1.2 GRMALU SERIES HUBS 2.1.3 GRB SERIES HUBS 2.1.4 GRS SERIES HUBS 2.1.5... - Page 3 INDEX OF TABLES Page TABLE 2.1 TRASCO : HUBS MATERIALS ® TABLE 2.2 TRASCO GRMP DIMENSIONS ® TABLE 2.3 TRASCO GRMP LENGTHS ® TABLE 2.4 TRASCO GRMALU DIMENSIONS ® TABLE 2.5 TRASCO ® GRB DIMENSIONS TABLE 2.6 TRASCO ® GRS DIMENSIONS TABLE 2.7 TRASCO GRF DIMENSIONS...
-
Page 4: General Information
www.sitspa.com TRASCO - User and Maintenance Manual ® General information We recommend that you carefully read all the mounting instructions before installing the coupling, paying particular attention to the safety instructions. TRASCO coupling is suitable for use in potentially explosive atmospheres. When using the coupling in hazardous areas, strictly observe ®... -
Page 5: General Advice In Case Of Danger
www.sitspa.com TRASCO - User and Maintenance Manual ® General advice in case of danger DANGER! Every operation performed on the coupling, either with mounting or maintenance, must be carried out with the machine not connected to the power supply. Accidental contact with the rotating parts can STOP cause serious injury to the operator. -
Page 6: Hubs
www.sitspa.com TRASCO - User and Maintenance Manual ® Hubs The TRASCO coupling consists of two metal hubs that have cut-outs with circular sections which contain the teeth of the elastic spider. ® The materials of standard hubs are laminated cast iron, spheroidal cast iron or aluminium, depending on the types and sizes. For details see TABLE 2.1 - TRASCO : hubs... - Page 7 www.sitspa.com TRASCO - User and Maintenance Manual ® Table 2.2 - TRASCO GRMP Dimensions ® SIZE 19/24 24/32 28/38 38/45 42/55 48/60 55/70 65/75 75/90 90/100 100/110 110/125 125/145 140/160 160/185 180/200 10,5 * measures in mm Table 2.3 - TRASCO ®...
-
Page 8: Grmalu Series Hubs
GRMP...B www.sitspa.com TRASCO - User and Maintenance Manual ® 2.1.2 GRMALU series hubs The TRASCO GRMALU series hubs are made of die-casting aluminium for A and B versions ® (TABLE 2.4 - TRASCO ® GRMALU dimensions). Mozzo Mozzo “B” “A” Table 2.4 - TRASCO GRMALU Dimensions ®... - Page 9 www.sitspa.com TRASCO - User and Maintenance Manual ® Table 2.5 - TRASCO GRB Dimensions ® SER-SIT ® SIZE TAPER BUSH 28/38 1108 (2820) 38/45 1108 (2820) 42/55 1610 (4025) 48/60 1615 (4040) 55/70 2012 (5030) 65/75 2012 (5030) 75/90 2517 (6545) 90/100** 3535 (9090) * measures in mm...
-
Page 10: Grs Series Hubs
www.sitspa.com TRASCO - User and Maintenance Manual ® 2.1.4 GRS series hubs The GRS series hubs are intermediate elements that increase the ability of the coupling to compensate for axial, radial and angular misalignments. The presence of two elastic spiders allows a high damping effect of the vibrations, with consequent reduction of the transmission noise and a reduced wear of the connected components, such as bearings. -
Page 11: Grf Series Hubs
www.sitspa.com TRASCO - User and Maintenance Manual ® 2.1.5 GRF series hubs The GRF series is the flange version that fits all the hubs of the TRASCO family. ® There are three different possibilities of coupling: • Flange-flange: through the fastening bores of the flange CF (CFN in the compact version) •... - Page 12 ALBERO-ALBERO ALBERO-ALBERO ALBERO-ALBERO ALBERO-FLANGIA ALBERO-FLANGIA ALBERO-FLANGIA FLANGIA-FLANGIA FLANGIA-FLANGIA FLANGIA-FLANGIA www.sitspa.com TRASCO - User and Maintenance Manual ® GRMP...A GRMP...A GRMP...A ALBERO-ALBERO ALBERO-FLANGIA FLANGIA-FLANGIA ALBERO-ALBERO ALBERO-FLANGIA FLANGIA-FLANGIA FLANGE - FLANGE SHAFT - FLANGE SHAFT - SHAFT ALBERO-ALBERO ALBERO-FLANGIA FLANGIA-FLANGIA Figure 2-5 - GRF C Hubs GRMP...A GRMP...A Table 2.8 - TRASCO...
-
Page 13: Hubs Machining
www.sitspa.com TRASCO - User and Maintenance Manual ® 2.1.6 Hubs machining Any machining of the hubs must not compromise its functionality. As for the maximum diameter of the bore that can be achieved, please refer to the table in the catalogue. The bore machining must be carried out in accordance with the concentricity values with the outer diameter and the perpendicularity values between the hole and the flat internal surface of the hub with a degree of tolerance IT8. -
Page 14: Position And Size Of The Setscrew
www.sitspa.com TRASCO - User and Maintenance Manual ® 2.1.7 Position and size of the setscrew SIT supplies flathead setscrews class 45H according to DIN 913 for fastening the hub on the shaft. For the position and size of the setscrews, refer to TABLE 2.9 - TRASCO ®... -
Page 15: Elastic Spider
www.sitspa.com TRASCO - User and Maintenance Manual ® Elastic spider The elastic spider is a toothed ring produced with special polyurethane compounds that allows for optimised coupling performance according to the application. The flexible element is particularly resistant to ageing, hydrolysis (therefore also suitable for tropical climates), fatigue, abrasion and is self-damping. -
Page 16: Elastic Spider Performance
www.sitspa.com TRASCO - User and Maintenance Manual ® 2.2.1 Elastic spider performance Table 2.10 - Elastic spider performance RATED TORQUE MAXIMUM TORQUE VIBRATORY TORQUE HARDNESS MAXIMUM SPEED SIZE COLOUR Tmax [Shore] [rpm] [Nm] [Nm] [Nm] Yellow 92 Sh A 14000 19/24 98 Sh A 14000... -
Page 17: Coupling Misalignments
www.sitspa.com TRASCO - User and Maintenance Manual ® Coupling misalignments TABLE 2.11 shows the misalignment values based on the different coupling sizes that can accomodated. Axial misalignment Axial misalignment Axial misalignment Figure 2-9 - TRASCO : misalignments ® Table 2.11 - TRASCO : misalignments ®... -
Page 18: Assembly
www.sitspa.com TRASCO - User and Maintenance Manual ® Assembly The TRASCO coupling is supplied unassembled, therefore it is recommended to check the presence of all the components and check ® that they match the application requirements. The characteristic of the TRASCO family of couplings gives the possibility of mounting any hub version provided that they belong to ®... - Page 19 www.sitspa.com TRASCO - User and Maintenance Manual ® Figure 4-2 - GRMP: mounting Table 4.1 - M Value M VALUE SIZE [mm] 19/24 24/32 28/38 38/45 42/55 48/60 55/70 65/75 75/90 90/100 100/110 110/125 125/145 140/160 160/185 180/200 PRECAUTIONS! Be very careful in the dangerous areas. DANGER! Touching overheated hubs may causes burns.
-
Page 20: Grb Coupling Assembly
www.sitspa.com TRASCO - User and Maintenance Manual ® GRB coupling assembling 4.2.1 Taper bush mounting Components: • 2 hubs (B1 with bush mounting from the outside, B2 with bush mounting from the inside, FIGURE 4-3 - Types of GRB) • 1 spider •... -
Page 21: Taper Bush Disassembly
www.sitspa.com TRASCO - User and Maintenance Manual ® If used in hazardous areas, it is advisable to use Loctite to prevent the setscrews loosening. PRECAUTION! It is not allowed to use the taper bush without keyway in high-risk areas, but only for category 3 equipment. 4.2.2 Taper bush disassembly To remove the taper bush from the hub, remove the setscrews. -
Page 22: Grf Coupling Assembly
www.sitspa.com TRASCO - User and Maintenance Manual ® GRF coupling assembly FLANGIA-FLANGIA 4.4.1 Flange-flange version Components: • 1 spider • 2 flanges (CF/CFN) GRMP...A GRFCF+AR+GRFCF GRFCFN+AR+GRFCFN Figure 4-5 - Flange-flange version (CF/CFN) • Place the CF/CFN flanges onto the motor and the driven machine tightening the screws partially •... -
Page 23: Shaft-Flange Version
www.sitspa.com TRASCO - User and Maintenance Manual ® 4.4.2 Shaft-flange version ALBERO-FLANGIA FLANGIA-FLANGIA Components: • 1 hub TRASCO ® • 1 spider • 1 flange (CF/CFN) GRMP...A GRMP...A TRASCO +AR+GRFCF TRASCO +AR+GRFCFN ® ® Figure 4-6 - Shaft-flange version (CF/CFN) •... -
Page 24: Shaft-Shaft Version
www.sitspa.com TRASCO - User and Maintenance Manual ® 4.4.3 Shaft-shaft version ALBERO-ALBERO ALBERO-FLANGIA Components: • 1 spider • 2 flanges (CF/CFN) • 2 flanged hubs (MF/MFN) GRMP...A • Cylindrical head screws • 2 setscrews GRMP...A MF+GRFCF+AR+GRFCF+MF MF+GRFCFN+AR+GRFCFN+MF Figure 4-7 - Shaft-shaft version (CF/CFN) •... -
Page 25: Atex Annex
www.sitspa.com TRASCO - User and Maintenance Manual ® ATEX Annex This Annex is an integral part of the sale of the SIT TRASCO coupling according to the ATEX Directive 2014/34/EU, contains the ® Declaration of Conformity, and, therefore, is delivered together with the coupling. The User and Maintenance Manual, may be downloaded in electronic format on the website www.sitspa.com. -
Page 26: Atex Equipment Classification
www.sitspa.com TRASCO - User and Maintenance Manual ® ATEX equipment classification Below is the classification of equipment and protection systems according to the ATEX Directive 2014/34/EU. Table 5.2 - ATEX groups and categories classification GROUP CATEGORY RISK LEVEL PROTECTION CHARACTERISTICS OPERATING CONDITIONS The equipment remains connected Two independent means of protection or... -
Page 27: Temperature Classes For Group I Equipment
www.sitspa.com TRASCO - User and Maintenance Manual ® 5.3.2 Temperature classes for Group I equipment Couplings mounted on Group I Category M2 equipment can operate in environments with the following temperature range: -30 °C < Ta < 90 °C The coupling is not suitable for Category M1 equipment. Marking SIT TRASCO ®... -
Page 28: Compact Marking
www.sitspa.com TRASCO - User and Maintenance Manual ® 5.4.2 Compact marking Where the size of the coupling does not allow complete marking, the Directive allows a reduced version which refers to this manual for its comprehension. I M2 / II 2GD Ex h X The letter X refers to this manual which includes a summary table of the temperature class and the resulting maximum permissible ambient temperature that must be at least 20 K less, in accordance with the elastic spider’s ability to resist. -
Page 29: Internal Manufacturing Check
www.sitspa.com TRASCO - User and Maintenance Manual ® CAUTION! Replace the elastic spider with an equivalent one of the same size. SIT S.p.A. does not accept any liability for incorrect replacements. For information on correct assembly, please refer to this User and Maintenance Manual. -
Page 30: Protection Devices For Couplings In Hazardous Atmospheres
www.sitspa.com TRASCO - User and Maintenance Manual ® 5.8.1 Protection devices for couplings in hazardous atmospheres Protection devices for couplings against unintended contact must be firmly attached. Couplings for use in hazardous atmospheres must be protected by sturdy guards (if possible, made of stainless steel) against falling objects. -
Page 31: Declaration Of Conformity
www.sitspa.com TRASCO - User and Maintenance Manual ® Declaration of conformity DECLARATION OF CONFORMITY SIT S.p.A. Viale A. Volta 2 20090 Cusago (MI) declare under our sole responsibility that the product: TRASCO Coupling ® to which this declaration refers, is in conformity with the following European Directive Directive ATEX 2014/34/UE The conformity is under observance of the following standards or standards documents:...
Need help?
Do you have a question about the TRASCO GRMP Series and is the answer not in the manual?
Questions and answers