Installation and Operational Instructions for ROBA -slip hubs Sizes 0 12 (B.1.0.GB)

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Charlotte West
5 years ago
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1 Plese red these Opertionl Instructions crefully nd follow them ccordingly! Ignoring these Instructions my led to mlfunctions or to clutch filure, resulting in dmge to other prts. These Instlltion nd Opertionl Instructions (I + O) re prt of the clutch delivery. Plese keep them hndy nd ner to the clutch t ll times. Contents: Pge 1: - Contents - Sfety nd Guideline Signs - Sfety Regultions Pge 2: - Clutch Illustrtions - Prts List Pge 3: - Clutch Illustrtions - Prts List Pge 4: - Function - Stte of Delivery - Additionl Instructions for Types 13_. _ - Friction Linings Pge 5: - Rustproof Friction Piring - Instlltion Guidelines - Instlltion Pge 6: - Bering Bushing - Needle Bering - Cup Spring Lyering Pge 7: - Torque Adjustment - Adjustment Tble (Size 0) Pge 8: - Torque Adjustment Pge 9: - Adjustment Tbles (Rdil Adjusting Nut Sizes 01-5) Pge 10: - Adjustment Tbles (Triple Lyering Sizes 1 + 2) Pge 11: - Adjustment Tbles (Triple Lyering Sizes 3-5) - Disposl Sfety nd Guideline Signs DANGER CAUTION Immedite nd impending dnger which cn led to severe physicl injuries or to deth. Dnger of injury to personnel nd dmge to mchines. Plese Observe! Guidelines on importnt points. Sfety Regultions These Instlltion nd Opertionl Instructions (I + O) re prt of the clutch delivery. Plese keep them hndy nd ner to the clutch t ll times. It is forbidden to strt use of the product until you hve ensured tht ll pplicble EU directives nd directives for the mchine or system into which the product hs been instlled hve been fulfilled. At the time these Instlltion nd Opertionl Instructions go to print, the ROBA -slip hubs ccord with the known technicl specifictions nd re opertionlly sfe t the time of delivery. Without conformity evlution, this product is not suitble for use in res where there is high dnger of explosion. This sttement is bsed on the ATEX directive. DANGER If the ROBA -slip hubs re modified. If the relevnt stndrds for sfety nd / or instlltion conditions re ignored. User-implemented Protective Mesures Cover ll moving prts to protect ginst seizure, dust or foreign body impct. Do not brethe in the friction lining deposits. Remove the dust when clening by mens of vcuum clener. During slipping, the ROBA -slip hubs het up. On contct => Dnger of burns. To prevent injury or dmge, only professionls nd specilists should work on the devices, following the relevnt stndrds nd directives. Plese red the Instlltion nd Opertionl Instructions crefully before instlltion nd initil opertion of the device. These Sfety Regultions re user hints only nd my not be complete! Pge 1 of 11 Germny E-Mil: info@myr.de

2 ROBA -slip hub Type series 100 ROBA -mx Type series 170 Fig (26) 7(27) (15) ROBA -min Type series 121 Type series 123 Fig. 2 24(25) ROBA -slip hub with needle bering Type series 160 Fig Prts List (Only use myr originl prts) 1 Hub (Type 100) 2 Thrust wsher 3 Adjusting nut 0 (Sizes 0-5) 4 Locking screw 5 Cup springs 6 Friction lining No. 1 7 Bering bushing (Type 100) 8 Adjusting screw 9 Cup spring suspension bolt (Sizes 6-12) 10 Adjusting nut 2 (Sizes 3-5) 11 Set screw (for torque djustment) 12 Sprocket wheel 13 Lock wsher 14 Adjusting nut 0 (Sizes 6-12) 15 Adjusting nut 1 (Sizes 0-5) 16 Friction lining (Type 160) 17* Friction lining No. 2 18* Rustproof wsher 19 Friction lining (ROBA -min) 20* Friction lining Nos. 4/5 21 Hexgon nut 22 Set screw for mould protection 23 Bering bushing (ROBA -min) 24 Hub (Type 121) 25 Hub (Type 123) 26 Hub (Type 170) 27 Bering bushing (Type 170) 28 Hub (Type 160) 29 Thrust wsher (Type 160) 30 Needle bering * See pges 4 nd 5 When ordering replcement prts, plese stte the complete Type designtion nd the Size. Order exmple: ROBA -slip hub Type , Size 1, 1 set (2 pieces) of friction linings Item 6. Pge 2 of 11 Germny E-Mil: info@myr.de

3 ROBA -lstic Type series 135 Fig ROBA -lstic Type series 131 Fig ROBA -lstic Type series 132 Fig ROBA -LD Type series 133, 134 Fig /52 Prts List (Only use myr originl prts) 1 Hub 2 Thrust wsher 3 Adjusting nut 0 4 Locking screw 5 Cup springs 6 Friction lining 8 Adjusting screw 13 Lock wsher 31 Clw element (Type 135) 32 Trnsmission flnge (Type 135) 33 Cp screws (Type 135) 34 Pocket element (Type 135) 35 Dmping buffer 36 Bering bushing 37 Flnge (Type 131) 38 Flexible ring (Type 131) 39 Hub for elstomeric clutch (Type 131) 40 Cp screws (Type 131) 41 Trnsmission flnge (Type 132) 42 Clutch flnge (Type 132) 43 Cp screws (Type 132) 44 Flexible intermedite ring (Type 132) 45 Clw ring (Type 132) 46 Flnge hub (Type 132) 47 Cp screws (Type 132) 48 Connection flnge (ROBA -LD) 49 Connection wsher (ROBA -LD) 50 Hexgon hed screw (ROBA -LD) 51 Sleeve 0 (Type 133) 52 Sleeve 1 (Type 134) 53 Fitting bolts 54 Hexgon nuts 55 Disk pck 56 Hub (ROBA -D) When ordering replcement prts, plese stte the complete Type designtion nd the Size. Order exmple: ROBA -lstic Type , Size 1, 1 set (2 pieces) of friction linings Item 6. Pge 3 of 11 Germny E-Mil: info@myr.de

4 Function (Fig. 1) ROBA -slip hubs re used to protect ginst overlod in mchine drives with sprocket wheels or toothed wheels. The drive element (sprocket wheel or similr) is pushed onto the bering bushing (7) nd clmped between the friction linings (6) using the thrust wsher (2), the s (5) nd the djusting nut (3) with lock wsher (13). The more the s (5) re compressed by the djusting nut (3), the higher is the torque t which the drive element slips. For n exct description of the torque djustment, plese see pges 7 nd 8. The ROBA -slip hub is subjected to therml lods depending on the slipping speed, slipping time nd the set torque. The friction performnce prmeters must not be exceeded so tht the friction linings on the ROBA -slip hub re not overheted or destroyed. The vlues presented in the reference vlue digrm re reference vlues, nd represent mximum slipping speed limits. These speed limits refer to mx. slipping speed of 1 s. The slipping speed must be reduced for longer slipping times. If in doubt, plese crry out ppliction-relted friction work clcultions. If the permitted slipping durtion is exceeded, the ROBA -slip hub will be subjected to overlod => Destruction of the friction linings Use slip monitor (speed monitor) to monitor the slipping speed. Additionl Instructions for Types 13_. _ For ll Types 13_. _, dditionl instructions regrding instlltion, permitted shft mislignments nd further technicl dt for the shft coupling re prt of the delivery. The following Additionl Instructions re included in delivery: For Type 131: B.1.3.GB For Type 132: B.1.1.GB For Type 133: B.9.0.GB For Type 134: B.9.0.GB For Type 135: B.1.7.GB Friction Linings Tble 1 (see below) shows the four different types of friction linings tht re vilble. The torque nd speed vlues stted in the slip hubs ctlogue refer to stndrd friction linings in dry running. For ll other friction linings, plese see Tble 1 for the corresponding vlues, or request the vlues for the respective ppliction. Tble 1 Friction lining We recommend tht you replce the friction linings t the ltest fter they hve worn down by 0,5 x dimension "s" (see Tble 4 / pge 6) per friction lining. Appliction Achieved torques of M mx. 1 Stndrd for dry running 100 % 2 Rustproof friction piring 100 % 4 5 Tble 2 Bronze friction lining for oil running Specil sliding mteril (only for single nd reduced friction power) Limit torque for overlod [Nm] 30 % 50 % Stte of Delivery ROBA -slip hubs re delivered pre-ssembled. The or the number of friction linings re dependent on the Type nd correspond to the respective order dt stipulted by the customer. ROBA -slip hubs in stndrd delivery feture finish bore (bore tolernce H7) nd keywy cc. DIN 6885 (keywy tolernce JS9). We recommend k6 tolernce for the shft. For other tolernces, plese contct the mnufcturers. If the order does not contin ny informtion on the instlltion width of the drive element (sprocket wheel or similr), the bering bushing (7) is delivered with mximum width. Size Type Type Type Pge 4 of 11 Germny E-Mil: info@myr.de

5 Rustproof Friction Piring The stndrd friction lining might estblish rust connection with grey iron nd steel surfces. This could increse the slip torque substntilly. Therefore, it is possible to equip ROBA -slips with rustproof friction piring (friction lining No. 2). This piring consists of two rustproof steel wshers (Item 18), which re brced in the slip hub, nd two specil friction linings (Item 17), which do not stick (Fig. 8) Fig. 9 Y A Fig A ground 0,8 1,6 b ground 0,8 Importnt Instlltion Guidelines The bores, shfts, friction linings nd friction surfces on the drive element must be free of grese nd oil. Shft surfce: finely turned or ground (R = 0,8 µm) Shft mteril: yield point t lest 350 N/mm 2. Fig. 10 Ød k Ød 0 Ød H8 X A Instlltion The instlltion sequence cn be seen in the exploded drwings Figs. 1 to 7, or Fig. 9 for needle bering design. For djusting nut (Item 3) instlltion, the djusting nut thred nd the lock wsher must be gresed lightly. Plese mke sure tht the is correct (see lso section Cup Spring Lyering)! Mke sure tht no grese gets onto the friction linings! Tble 3 Size X [mm] Y [mm] 0-2 0,05 0, ,08 0, ,10 0, ,12 0,30 When instlling ROBA -lstic Types, plese lso use the Instlltion Instructions for the flexible coupling. The slip hub cn be secured xilly onto the motor shft end using set screw (Item 8, Fig. 1) or, s shown in Fig. 11, using press cover. ROBA -slip hubs in stndrd delivery feture finish bore (bore tolernce H7) nd keywy cc. DIN 6885 (keywy tolernce JS9). We recommend k6 tolernce for the shft (see Fig. 11). Plese mke sure tht the drive element is plne prllel nd hs finely ground surfce in the bore re or in the re of the friction linings (see Fig. 10 nd Tble 3). Ød A H7 k6 Fig. 11 Pge 5 of 11 Germny E-Mil: info@myr.de

6 Bering Bushing (Items 7, 23, 27) If the order does not contin ny informtion on the instlltion width of the drive element (sprocket wheel or similr), the bering bushing (7) is delivered for mximum instlltion width (b mx). If lower instlltion width vlue thn b mx is required, the bering bushing must be shortened t the end without n inside chmfer. The bering bushing must be mounted with the inner chmfer fcing forwrd, s shown in Fig. 12. inner chmfer Fig. 13 Sizes 0-5 bering bushing Fig. 12 Bering bushing width stndrd friction piring = instlltion width + 1,5 x friction lining width + 0,5 mm Fig. 14 Sizes 0-5 Bering bushing width rustproof friction piring = instlltion width + 1,5 x friction lining width + 2x width rustproof wsher + 0,5 mm At high rdil lods nd high slipping frequency, we recommend using slip hub with needle bering. Needle Bering (30) As it is not possible to djust the needle bering (30) length to the instlltion width "b", the instlltion width "b" on Type 160 is predefined (see Tble 4). Plese bore the drive element using bore tolernce of N7, nd press it onto the needle bering s shown in Fig. 9. Fig. 15 Sizes 0-2 Triple Tble 4 Size Friction lining width "s" [mm] Width of the drive element "b" Type 160 [mm] , , Cup Spring Lyering Correct is prerequisite for problem-free clutch function nd torque djustment. In Figs. 13 to 19, the respective rrngements dependent on the size re shown. Rule-of-thumb: ROBA -slip hub Type 1.1 for lrge friction work nd low torque vlues (s re single-lyered, single contct pressing force); ROBA -slip hub Type 1.2 for medium friction work nd higher torque vlues (s re double-lyered, double contct pressing force); ROBA -slip hub Type 1.3 for low friction work nd high torque vlues (s re triple-lyered, triple contct pressing force); Sizes 3-5 Triple Fig. 16 Fig Sizes 6-12 Fig. 18 Fig. 19 Pge 6 of 11 Germny E-Mil: info@myr.de

7 Torque Adjustment Sizes 0-5 Both mbient conditions nd longer downtimes cn influence the set slip torque. On triple, more slip torque scttering might occur specific to the respective lod. The vlues in the Adjustment Tble re only guideline vlues. During initil djustment, plese let the ROBA -slip hub slip severl times t 50 % of the mximum torque in order to chieve cler friction lining wer pttern. Due to wer on the lining, occsionl re-djustment my be necessry depending on the slipping frequency. Due to tolernces, the torque djustment vlues cn only be considered guideline vlues. Torque djustment on stndrd djusting nut (3) s (5) single- or double-lyered There re 12 mrkings engrved on the thrust wsher (2) fcing side (Size 0: 24 mrkings), nd 4 mrkings engrved on the djusting nut (3) (Fig. 20). The djusting nut (3) inc. lock wsher (13) is pushed mnully up to contct onto the s (5). The 4 mrkings nd the mrkings on the thrust wsher (2) must mtch. Continue to turn the djusting nut (3) by the number of grdution lines which ccords with the required slip torque. An Adjustment Tble is dhered to the clutches Sizes 01 to 5, which indicte the number of grdution lines tht need to be djusted dependent on the torque. For Size 0, the Adjustment Tble is printed in the Instlltion Instructions (Tble 5). Thred for removing the slip hub from the shft Equls one grdution line One rottion equls 12 grdution lines or 24 grdution lines on Size Torque djustment on s triple-lyered Sizes 0-5 (Figs. 15 nd 16) The ROBA-slip hubs with triple do not hve n Adjustment Tble dhered to them. For these Types, the Adjustment Tbles on pges 10 nd 11, s well s Tble 5 for Size 0, re vlid. Adjustment Sizes 0-2 Type djusting nut 0 There re 12 mrkings engrved on the thrust wsher (2) fcing side nd 4 mrkings engrved on the djusting nut (3) (Fig. 20). The djusting nut (3) inc. lock wsher (13) is pushed mnully up to contct onto the s (5). The 4 mrkings nd the mrkings on the thrust wsher (2) must mtch. Continue to turn the djusting nut (3) using fce wrench by the number of grdution lines which ccords with the required slip torque. For the number of grdution lines tht need to be djusted dependent on the torque, plese see Tbles 5, 12 nd 13. After torque djustment is completed, the djusting nut (3) must be secured by turning in the locking screw (4). Adjustment Sizes 0-2 Type djusting nut 1 (for rdil djustment using hook wrench) The distnce dimension "" in Fig. 21 indictes the size of the djusted slip torque independent of friction lining wer. The clutch delivery includes n Adjustment Digrm, which indictes dimensions "" dependent on the for certin slip torque. After torque djustment is completed, the djusting nut (15) must be secured by turning the rdilly rrnged set screw (22) into hub keywy. Clmping the thred s in Fig. 24 is not permitted. If necessry, the djusting nut (15) my hve to be turned. Adjustment Sizes 3-5 Type djusting nut 2 Tighten the djusting nut (10) until dimension "b", s stted in the Adjustment Tble (Tbles 16-18) is reched. The djusting nut must be secured by turning the rdilly rrnged set screw (22) into hub keywy. Clmping the thred s in Fig. 24 is not permitted. If necessry, the djusting nut (10) my hve to be turned. Tighten the individul set screws (11) in the djusting nut (10) evenly in steps of pproximtely 1/4 turn until dimension "" s stted in the Adjustment Tble or the required torque is reched. Counter the set screw with hexgon nuts (21). Fig The respective keys for torque djustment on slip hubs re vilble t the plce of mnufcture. Exmple: On slip hub Size 0 with single-lyered s, torque of 5 Nm must be djusted. Tble 5 shows tht 8 grdution lines re required for this. After torque djustment is completed, the djusting nut must be secured by screwing in the locking screw (4). Tble 5: Adjustment Tble for Size 0 / Type 1.10 ROBA-RN Size 0 Surfce-ground sprocket wheel on friction lining No. 1, run-in stte Turn the nut up to cup spring contct, then count grdution lines 24 lines = 1 turn 2 TS cup Nm spring / \ Lines cup Nm springs // Lines Triple cup Nm springs /// Lines Pge 7 of 11 Germny E-Mil: info@myr.de

Torque djustment on djustment nut for rdil djustment Sizes 01-5 These ROBA -slip hubs do not hve Adjustment Tbles dhered to them. The distnce dimension "" (see Fig.

For the respective required dimension "" dependent on the for certin slip torque, plese see the Adjustment Tbles on pge 9 (Tbles 6-11).

If necessry, the djusting nut my hve to be turned.

8 Torque djustment on djustment nut for rdil djustment Sizes 01-5 These ROBA -slip hubs do not hve Adjustment Tbles dhered to them. The distnce dimension "" (see Fig. 21) indictes the size of the djusted slip torque independent of friction lining wer. For the respective required dimension "" dependent on the for certin slip torque, plese see the Adjustment Tbles on pge 9 (Tbles 6-11). After torque djustment is completed, the djusting nut must be secured by turning the rdilly rrnged set screw into hub keywy. Clmping the thred s in Fig. 24 is not permitted. If necessry, the djusting nut my hve to be turned. Torque Adjustment Sizes 6-12 on stndrd djusting nut (14) During initil djustment, plese let the ROBA -slip hub slip severl times t 50 % of the mximum torque in order to chieve cler friction lining wer pttern. Due to wer on the lining, occsionl re-djustment my be necessry depending on the slipping frequency. Fig. 21 On slip hubs Sizes 6-12, the distnce dimension "" indictes the size of the djusted slip torque (Fig. 22). For Sizes 6-8, dimension "" is indicted in the Adjustment Tble dhered onto the clutch. For Sizes 9-12, n djustment digrm must be requested if required. Adjust the djusting nut (14) inc. relxed suspension bolts (the suspension bolts (9) protrude from the djusting nut (14)) to the required dimension "" using fce wrench. Here, the fce wrench pilots must be inserted into two hexgon sockets of the suspension bolts (9) in order to turn the djusting nut (14). Snpring 14 9 Do not continue to turn the suspension bolts (19) ginst the snp ring resistnce (Fig. 22). Fig. 22 After djustment is completed, the djusting nut (14) must be secured by screwing the rdilly rrnged set screw (22) into one of the 4 hub keywys. Clmping the thred s in Fig. 24 is not permitted. If necessry, the djusting nut (14) my hve to be turned. Then the suspension bolts (9) re turned in evenly, in steps of pproximtely 1/4 turns, until they re flush with the djusting nut (14) (Fig. 23). flush 14 9 The torque djustment tbles cn only be considered s guideline vlues, s they cn vry substntilly due to tolernces, friction vlue fluctutions nd surfce chrcteristics or the run-in condition of the output element. Exct torque djustment requires mnufcturer-side djustment on test stnd (preferbly using the customer-side provided output element) or direct torque mesurement on the instlled clutch or system. Fig /14/ Fig. 24 Pge 8 of 11 Germny E-Mil: info@myr.de

9 Adjustment Tbles for Rdil Adjustment on Sizes 01 to 5 The vlues stted in the Adjustment Tbles re only guideline vlues. Due to mnufcturing tolernces, the ctul torque vlues cn in prt devite substntilly from the vlues stted in the Tble. Type Type Tble 6: Adjustment Tble for Size 01 with Rdil Adjusting Nut (15) Torque [Nm] , Dimension "" [mm] 9,8 9,6 9,2 9 8,7 8,5 8,2 8 Torque [Nm] Dimension "" [mm] 8,2 8,1 8 7,9 7,7 Tble 7: Adjustment Tble for Size 1 with Rdil Adjusting Nut (15) Torque [Nm] Dimension "" [mm] 11,1 10,7 10,3 10 9,6 9,2 8,8 8,4 8,1 Torque [Nm] Dimension "" [mm] 9,1 9 8,8 8,7 8,6 8,5 8,3 Tble 8: Adjustment Tble for Size 2 with Rdil Adjusting Nut (15) Torque [Nm] Dimension "" [mm] 13,4 13, ,8 12,5 12,1 11,8 11,4 11 Torque [Nm] Dimension "" [mm] 10,4 10,3 10,2 10 9,9 9,8 9,7 Tble 9: Adjustment Tble for Size 3 with Rdil Adjusting Nut (15) Torque [Nm] Dimension "" [mm] 13,9 13,8 13,5 13, ,8 12,5 12,3 12 Torque [Nm] Dimension "" [mm] 10,2 10 9,9 9,8 9,7 9,5 9,4 9,3 9,2 Tble 10: Adjustment Tble for Size 4 with Rdil Adjusting Nut (15) Torque [Nm] Dimension "" [mm] 16,9 16,8 16,4 16,1 15,8 15,4 14,9 14,4 13,9 13,7 13,3 Torque [Nm] Dimension "" [mm] 13,1 12,9 12,7 12,6 12,4 12,2 12,1 11,9 11,7 11,4 Tble 11: Adjustment Tble for Size 5 with Rdil Adjusting Nut (15) Torque [Nm] Dimension "" [mm] 19,4 19,1 18,7 18,4 18,1 17,7 17,4 17,1 16,7 16,4 15,9 Torque [Nm] Dimension "" [mm] 14,5 14,3 14, ,8 13,7 13,5 13,3 13,2 13 Pge 9 of 11 Germny E-Mil: info@myr.de

10 Adjustment Tbles for Triple Lyering on Sizes 1 nd 2 nd Type 1.310: The vlues stted in the Adjustment Tbles re only guideline vlues. Due to mnufcturing tolernces, the ctul torque vlues cn in prt devite substntilly from the vlues stted in the Tble. Equls one grdution line One rottion equls 12 grdution lines Tble 12: Adjustment Tble for Size 1 / Type Torque [Nm] Grdution lines Tble 13: Adjustment Tble for Size 2 / Type Torque [Nm] Grdution lines Adjustment Tbles for Triple Lyering on Sizes 1 nd 2 nd Type 1.311: The vlues stted in the Adjustment Tbles re only guideline vlues. Due to mnufcturing tolernces, the ctul torque vlues cn in prt devite substntilly from the vlues stted in the Tble. b Tble 14: Adjustment Tble for Size 1 / Type Torque [Nm] Dimension "" [mm] 11,1 11,0 10,9 10,8 10,7 10,6 10,5 Dimension "b" [mm] 10,3 Tble 15: Adjustment Tble for Size 2 / Type Torque [Nm] Dimension "" [mm] 12,9 12,8 12,7 12,6 12,5 12,4 12,3 12,2 12,1 Dimension "b" [mm] 10,7 Pge 10 of 11 Germny E-Mil: info@myr.de

11 Adjustment Tbles for Triple Lyering on Sizes 3 to 5: The vlues stted in the Adjustment Tbles re only guideline vlues. Due to mnufcturing tolernces, the ctul torque vlues cn in prt devite substntilly from the vlues stted in the Tble. e b Size e C d 3 14,5 9 M8 x ,5 11 M10 x ,8 12 M10 x 25 c d Fig. 29 Tble 16: Adjustment Tble for Size 3 / Type Torque [Nm] Dimension "" [mm] 10,5 10,3 10,1 9,9 9,7 9,5 9,3 9,1 8,9 8,7 Dimension "b" [mm] 14 Tble 17: Adjustment Tble for Size 4 / Type Torque [Nm] Dimension "" [mm] 13,0 12,9 12,8 12,7 12,6 12,5 12,4 12,3 12,2 12,1 12,0 11,9 Dimension "b" [mm] 17,5 Tble 18: Adjustment Tble for Size 5 / Type Torque [Nm] Dimension "" [mm] 11,9 11,8 11,7 11,6 11,5 11,4 11,3 11,2 11,1 11,0 10,9 Dimension "b" [mm] 19,5 Disposl Our slip hub components must be disposed of seprtely s they consist of different mterils. All metl components: Steel scrp (Code No ) Friction linings: Brke linings (Code No ) (Compression mterils) Friction linings: Plstic (Code No ) (Plstic) Elstomers: Plstic (Code No ) Pge 11 of 11 Germny E-Mil: info@myr.de

CCD-493 KIT SERIES INSTRUCTION SHEET

(COMPLETE CCD-493-W KIT ILLUSTRTED. CUT-OUTS IN TRCK TO EXPOSE COMPONENTS) CCD-493 KIT SERIES INSTRUCTION SHEET CROWDERTRCK S CTCH N CLOSE TM SYSTEM PREVENTS BOUNCING ND SLMMING OF SLIDING S. CN BE INSTLLED