Assembly and Service Manual Barrel Coupling
Contents
1. Barrel Coupling m TS C HA N BAWG007 GBR 0 Assembly and Service Manual 1 INITIAL CONSIDERATIONS The TSCHAN barrel coupling is supplied as a whole unit ready to be mounted but not provided with lubricant Therefore before it is put into service it must be lubricated in the required quantity with the appropriate lubricant as indicated in chapter 4 table 3 In case it is necessary to dismantle the coupling i e for the machining of a pilot bored hub or for the shrink fit setting up it is very important to make sure that when assembling it again the hub and the sleeve flange pair off without taking place a possible mixture between different unities and it will also have to be done in the same relative position at is was supplied This is achieved by making coincide the marked tooth of the hub with the corresponding marked tooth of the sleeve flange reference fig 1 and 2 The bearing support of the drum at the opposite side of the coupling must absorb the axial forces generated during the service and must convey them to the structure The axial component of any structural distortion must not exceed the maximum acceptable axial displacement for the coupling indicated on table no 1 Fixing screws for the assembly of the coupling to the drum and the securing of covers must have a minimum 8 8 quality The tightening torque of these screws will have to be in accordance with the said quality and also with the material of the covers and of t2. 57 0 65 0 72 09 1 0 13 20 Table no 3 Greases 20 C 80 C BPEnergreaseLS EP2 BP Table no 4 TK gb 05 00 doc page 3 of 4 Tschan GmbH Zweibrucker Stra e 104 D 66538 Neunkirchen Saar Postfach 2166 D 66521 Neunkirchen Saar 5 MAINTENANCE LUBRICATION PERIODICITY Depending on the operating conditions the lubricant must be completly renewed every 2000 up to 3000 hours of operation and as a minimum once a year For ist renewal feed the lubricant through the inlet ejecting the used lubricant through the overflow hole When new lubricant starts being ejected out of this overflow hole it will mean that the operation has been completed PERIODICAL INSPECTIONS At least once a year the following checkings must be carried out Tightening of all the screws up to the recommend values and replacement of the damaged ones Internal wear of the teeth The position of the mark over the pointer in relation to the marks over the hub fig 5 will be an indicator of the state of the flanks wear When the equipment is new the pointer mark is centered case a When it reaches the limit case b the whole coupling has to be replaced Table no 5 shows the maximum permissible wear values m 2 for applications which imply one only sense of loading ty pical case of the hoisting in cranes With applications of reversible loading sense the amplitude between the marks must be divided by 2 Unless it is exp
3. al position is indicated by the coincidence of the mark at the pointer with the mark of the hub fig 3 At the position the setting of the opposite bearing support of the drum to the base is defined Afterwards the angle alignment is checked by measuring the gap X fig 4 at four points with a separation of 90 by using a reference ruler As an indication the following maximum difference between the 4 measurements to the height of the external part of the sleeve flange can be considered as acceptable 0 3 mm for sizes lt TK 600 0 6 mm for sizes gt TK 1000 External cover Pointer Coie Hare Axial adjustment marks fig 3 fig 4 4 LUBRICATION Once the setting up has been done and before the putting into service the internal chamber has to be filled with lubricant EP2 Extreme Pressure additive and consistency NLGI 2 The inlet at the external cover is suitable for placing a tubular extension up to the external part of the drum making access easier In practice lubricant must be fed until it comes out of the oil overflow hole at the opposite part of the hub As an indication Table no 3 shows the approximate amount depending on the different sizes Table no 4 shows certain references of appropriate lubricants for temperatures of 20 and up to 80 C Please ask for advice if temperatures are out of that range 160 200 300 400 600 1000 1500 3400 4200 6200 0 10 0 12 0 17 0 19 0 23 0 45 0
4. ft Place the external cover together with its joint and the retainer ring over the shaft Make sure that the space between the cover and the reducer is sufficient to house the fixing screws If it was not so the screws have to be previously housed in the cover Heat the hub up to the appropriate temperature for its mounting Whatever method of heating is used it must be progressive along the whole surface preventing any localized heating spots As an indication a maximum temperature of 200 C is usually enough for this operation Mount the hub on the shaft until reaching a reference mark previously set or until the hub face matches the shaft end At this stage it is crucial to avoid any contact of the hot hub with the seal Before continuing with the procedure wait until the hub cools down and reaches room temperature Set up the sleeve flange over the hub checking that the matching and the position reference of these ones is the correct one fig 2 House the barrels in their cavities and place the external retainer ring in its channel Fix the external cover making the pointer coincide with the marks over the hub Check the free axial displacement of the sleeve flange fig 2 TK gb 05 00 doc page 2 of 4 Tschan GmbH Zweibrucker Stra e 104 D 66538 Neunkirchen Saar Postfach 2166 D 66521 Neunkirchen Saar 3 AXIAL ADJUSTEMENT AND ALIGNMENT Once the coupling has been fixed to the drum flange its correct axi
5. he drum flange See values on table no 2 Hub Sleeve flange Barrel External cover Pointer Internal cover Seal Retaining ring Carrier face Wear marks Axial adjustment mark Assembly mark Lubricant filler Overflow hole Extractor hole Fixing screw o N O 0 PE eS Max axial displacement 100 130 160 200 300 400 600 1000 1500 2600 3400 4200 Tamm 3 3 4 4 4f4 4 4l4 s6_ Table no 1 Torque Nm _ 26 50 90 215 420 725 Table no 2 TK gb 05 00 doc page 1 of 4 Tschan GmbH Zweibrucker Stra e 104 D 66538 Neunkirchen Saar Postfach 2166 D 66521 Neunkirchen Saar 2 SETTING UP ON THE REDUCER SHAFT HUB SHAFT CONNECTIONS BY MEANS OF KEYS SPLINES ETC Clean the surfaces of the hub bore and the shaft Pre heat the whole coupling by putting it into a bath of hot oil at a temperature which does not exceed 80 C so that the seals are not damaged The oil of bath must not attack those components manufactured on a nitrile base Mount the hub on the shaft avoiding to bump it and applying force only to hub item 1 Check the free axial displacement of the sleeve flange HUB SHAFT CONNECTION BY MEANS OF INTERFERENCE WITHOUT KEYS In this case it is necessary to separate the hub from the rest of the coupling Unfasten and take away the external cover as well as the sleeve flange the external retainer ring and the barrels Clean the surfaces of the hub and the sha
6. ressly asked for couplings are standardly supplied with the marks according to the aforementioned table and therefore it is advisable to modify them if the application requires so in order to correctly asses the wear evolution Axial adjustement According to fig 2 If deviation was close to the maximum acceptable value on table no 1 the seat position of the support bearing must be readjusted Seals control If any deterioration appears on the sealing lips these must be replaced Pointer Wear marks fig 5a fig 5b Between marks O K Wear limit Wear control O o Wearcontroh OS S S S S S S OSOS Sze 25 50 75 100 130 160 200 300 400 600 1000 1500 2600 3400 4200 6200 eae eee eae ee ae ee ee ee Table no 5 TK gb 05 00 doc page 4 of 4 Tschan GmbH Zweibrucker Stra e 104 D 66538 Neunkirchen Saar Postfach 2166 D 66521 Neunkirchen Saar
Download Pdf Manuals
Related Search