ROTARY MOTION ONTROL Technical Data Sheet Mechanical Torque Limiter The trend in industry is to design and incorporate more automation into production processes. Machines are becoming more accurate, requiring a higher degree of precision. They are becoming faster, using servo and D drive technology, and they are more rigid to withstand the dynamic loads necessary to increase capacity and productivity. Torque overloads caused by material jams, operator error, or a whole host of unforeseen reasons pose a significant threat to machine downtime. Machine downtime in an automated production environment is very costly. Broken components, costly technicians, and long lead times for custom components can make the difference between operating profitably or not. The use of a patented torque limiter will isolate the driving from the driven elements within a matter of milliseconds, once the torque reaches a preset overload value. Features Precise overload protection Absolutely backlash-free and torsionally rigid ompact, simple design Disengagement detection is achieved through indexing ring movement Low residual friction following disengagement Low moment of inertia Disengagement within milliseconds Double bearing support of pulley/sprocket
Overview Order using model descriptions only 1 2 3 4 MTLXX - XXX - XX - XXX - X/XX - XXX - XX - XXX 8 7 6 5 FIELD 1: Specify MTL size 15,, 60, 1, 200, 0, 0, 800, 10 or 20 FIELD 2: Select the type of MTL mounting PMT (Pilot Mount/ Tapered clamping hubs) lock the torque limiter to the shaft with a series of cap screws that are alternately and evenly tightened. PMK (Pilot Mount/ Keyed bore) do not have set screws to retain the unit on the shaft. Use shaft collars to fix position of the MTL on the shaft. Setscrews are not an option with this design. 2: oupling with two clamp collars and a integral, bellows coupling 2T: oupling with two Tapered clamping hubs and a integral, bellows coupling P: oupling with two clamp collars/and a conical, press-fit insert. The unit dis-mounts without loosening the collars E: oupling with two clamp collars with an elastomer (spider) coupling FIELD 3: Select the interface function SP (Single Position) most coonly used, advantage is automatic re-engagement, resets at a single point every 360 degrees. Overloads are sensed with a proximity sensor. MP (Multi-Position) applications include slow speed, single directional shafts like those used on conveyors or mixers. Overloads are sensed with a proximity sensor. Single Position FD interfaces are used where a proximity sensor is not an option. Low residual friction of the full disengagement version allows for multiple revolutions of the clutch to take place with minimal wear. Re-engagement is not automatic; the spring must be manually moved into position after an overload occurs. The Full Disengagement MTL re-engages manually every 60º (six positions). Other positions available on request. FIELD 4: Specify the bore size; refer the maximum bores sizes in the selection chart. Specify a bore diameter for both ends of the coupling FIELD 5: Specify the torque range; multiple torque ranges are shown for each model size. Select the torque range that provides the trip-torque in the middle of the range to allow for torque setting adjustment either up or down. Multi-Position FIELD 6: Specify the trip-torque setting. This is the torque level where the MTL disengages to protect the components in the drive train. FIELD 7: Specify the unit finish if non-standard. Standard material is black oxide steel. Optional material is stainless steel, designated as SS in this field. Note: Stainless steel MTL s are three times the cost of a standard unit. Full Disengagement FIELD 8: Specify the overall length for billows couplings (re: dimension A in the product catalog). The shortest overall length given in the catalog for billows type couplings provides the more lateral stiffness than the longest overall length. The longest overall length provides more angular misalignment than the shortest overall length. 2
Overview PMT / PMK 2 2T E Torque Range in Newton Meters P Nexen Mechanical Torque Limiter Family MTL Size 15 60 1 200 0 0 800 10 20 Single or Multiposition In Nm Full Disengagement In Nm 5-10 2, 3 5-15 8-20 2 12-25 1 20- - 5-20 10-25 2, 3 10-20- 2, 3 20-60 1-100 1 7-15 8-20 16- Maximum Bore in Millimeters 10-25-80-115 1 10-1 20- -60 20- -90 2, 3 45-1 80-180 2 80-5 1 80-200 3 20-60 -80 80-1 -90 60-160 -2 2 1-280 2-0 1 80-1 1-200 100-200 1-2 200-320 2 0-0 1, 3-180 160-0 80-200 200-0 0-0 2, 3 320-6 -1 100-0 2-0 0-6 0-800 6-8 600-900 3 6-9 1 200-0 4-8 600-800 6-8 3 0-0 1000-1800 1000-12 12-10 MTL Size 15 60 1 200 0 0 800 10 20 Tapered Bore 29 37 44 56 56 60 100 lamp ollar Bore 26 32 42 45 60 60 75 80 -- Keyed Bore 25.4 38 44 58 60 73 95 10-2000 2000-20 20-2800 10-00 1800-20 Torque Range in Inch-Pounds MTL Size 15 60 1 200 0 0 800 10 20 Single or Multiposition In-lbs Full Disengagement In Nm 44-88 2, 3 44-133 71-7 2 106-1 1 7-4 0-6 44-7 88-1 2, 3 88-265 7-4 2, 3 7-5 1 442-885 1 60-1 -5 1-265 Maximum Bore in Inches 88-265 1-8 442-1018 1 85-265 1 5-0 265-5 7-6 265-796 2, 3 3-1327 8-1593 2 8-91 1 8-3 5-5 0-5 5-1325 265-795 5-1416 1062-2475 2 12-2478 12-1 5-2 11-885- 1327-2125 -2832 2 45-1 1060-1590 1416-26 5- -95 26-4425 2 28-57 4-1325 885-26 10-4425 -57 4425-80 57-85 59-7964 3 5752-87 1 - -79 55 80 5752-75 3 64-10620 88-15925 88-11060 11060-13275 MTL Size 15 60 1 200 0 0 800 10 20 Tapered Bore 0.875 0.875 1.125 1.437 1.7 2.125 2.125 2.7 3.938 lamp ollar Bore 1.000 1.187 1.2 1.625 1.7 2.2 2.937 3.125 -- Keyed Bore 0.7 1.000 1.187 1.0 1.7 1.937 2.2 2.875 3.7 1 - PMT and PMK only. 2-2 and E only. 3-2T only. 13275-0 0-125 200 24775 12390-4 15925-23890 3
Type PMT/PMK H K J Actuation Path Bore Hole for Wrench I Thread/Screw Ø Ø F Ø E Ø D Ø D Ø B / BF Ø O 2 Ø O 3 Keyway Ø D 1 Radial Load apacity Types PMT/PMK have integrated bearings for support of attached components. (Example: a pulley or timing belt sprocket) Do not exceed the maximum radial force (See page 7 for belt pull calculation). enter the load between dimension (S). MTL Size 15 60 1 200 0 0 800 10 20 Maximum Radial 10 1800 20 00 00 40 5600 8000 00 20000 Load apacity [5] [5] [5] [674] [787] [1012] [1259] [] [26] [4496] N [lbs] (S) From - To PMT 7-14 [.28-.] L / LF A / AF 8-18 [.-.71] Disengagement Torque Setting 8-18 [.-.71] 12-20 [.47-.79] 12- [.47-.87] R PMK 12-23 [.47-.91] 12-25 [.47-.] A 1 / A 1 F 14-34 [.-1.34] From - To 20-42 [.79-1.65] 32-60 [1.26-2.36] Min DIN 1816 Nexen mechanical torque limiters are factory set to the lowest disengagement torque, which is marked on the coupling. The adjustment range (min/max) is also marked on the adjustment nut (1). The customer can adjust the disengagement torque as long as it falls into the range (12) indicated on the adjustment nut. The adjustment range may not be altered during setting. To adjust the disengagement torque, loosen the locking screws (11) and rotate the adjustment ring using a spanner wrench to the desired new setting. Tighten the three locking screws (11) and test the torque limiter. 4 Max Positive Stop 1 Adjustment Nut 12 Adjustment Range 11 Fastening Screw 13 Marking 3 Steel Actuation Ring MTL Function MTL Size Disengagement Speeds (RPM) SP / MP FD 15 4,000 14,0 2,800 13,0 60 3,0 12,100 1 3,200 10,900 200 3,000 9,0 0 2,0 8,2 0 2,200 7,000 800 2,000 5,0 10 1,0 3,000 20 1,200 3,000
Type PMT/PMK Type PMT/PMK A A1 A1 lamping Fit Length Max. Bores (Type PMT) A Size 15 60 1 200 0 0 800 10 20 [1.57] A F [1.57] A 1 34 [1.34] A 1 F 34 [1.34] B B F 62 [2.44] D Max. Bores (Type PMK) in D 1 0.7 Pilot Diameter h7 E [1.57] Bolt ircle Diameter ±0.2 47 F [1.85] Flange Diameter - 0.2 53 [2.09] [1.97] [1.97] 43 [1.69] 43 [1.69] 65 [2.56] [2.76] 25.4 1.000 47 [1.85] 54 [2.13] 63 [2.48] 54 [2.13] 54 [2.13] 46 [1.81] 46 [1.81] 73 [2.87] 83 [3.27] 27,5 [1.08] 29 [1.14] 1.187 63 [2.48] 72 [2.83] 58 [8] 58 [8] 48,5 [1.91] 49 [1.93] 92 [3.62] [3.86] 32 [1.26] 37 [1.46] 38 1.0 68 [2.68] 78 [3.07] 87 [3.43] 63 [2.48] 66 [2.6] 54 [2.13] 57 [5] 99 [3.90] 1 [4.61] 32 [1.26] 44 [1.73] 44 1.732 75 [2.95] 85 [3.] [3.86] [2.76] 73 [2.88] 57 [4] 60 [2.36] [4.72] 132 [5.20] 41 [1.61] 56 [0] 1.969 82 [3.23] [3.86] 112 [4.41] 84 [3.] 88 [3.47] 71,5 [2.81] 75 [2.96] 1 [5.] 1 [6.11] 41 [1.61] 56 [0] 58 83 90 [3.54] 110 [4.33] 128 [5.04] 95 [3.74] 95 [3.74] 80 [3.15] 91 [3.59] 152 [5.] 7 [6.97] 49 [1.93] 60 [2.36] 60 2.362 100 [3.94] [4.72] 1 [5.51] 109 [4.29] 1 [4.61] 93 [3.66] 110 [4.33] 4 [6.85] 187 [7.37] 61 [2.] [2.76] 73 2.875 125 [4.92] 148 [5.83] 165 [6.] 146 [5.75] 152 [5.99] 1 [5.] 141 [5.56] 242 [9.53] 258 [10.16] 80 [3.15] 100 [3.94] 95 3.7 168 [6.61] Thread H 6 x M4 6 x M5 6 x M5 6 x M6 6 x M6 6 x M8 6 x M8 6 x M10 6 x M12 6 x M16 Thread Length 6 8 9 10 10 10 12 15 16 24 I [0.24] [0.] [0.] [0.39] [0.39] [0.39] [0.47] [0.59] [0.63] [0.94] Pilot Length -0.2 3 5 5 5 5 6 9 10 13,5 20 J [0.12] [] [] [ [] [0.24] [0.] [0.39] [0.53] [0.79] 8 11 11 12 12 15 21 25 34 K [.0] [0.43] [0.43] [0.72 [0.72] [0.59] [0.83] [0.] [1.34] 27 37 39 44 47 59 67 82 108 L [1.06] [1.54] [1.73] [1.85] [2.32] [2.64] [3.23] [4.25] L 27 37 39 41.5 47 51,5 62 75 94 [1.06] [1.54] [1.63] [1.85] [2.03] [2.44] [2.95] [3.] [4.72] Screw ISO 4762 M4 M5 M5 M6 M6 M8 M8 M10 M12 M16 4 4 7 12 14 18 25 36 Tightening Torque [Nm] N [1.0] [1.0] [2.0] [2.5] [3.0] [4.0] [7.0] [8.0] [16.0] [27.0] Diameter 42 49 62 67 75 84 91 112 154 O 2 [1.65] [1.93] [2.44] [2.64] [2.95] [3.] [3.58] [4.41] [6.06] Diameter h7 27 32 39 65 72 75 92 128 O 3 [1.06] [1.26] [1.54] [1.97] [2.56] [2.83] [2.95] [3.62] [5.04] 2,5 2,5 2,5 2,5 3 3 4 4 4,5 6 R [0.10] [0.10] [0.10] [0.12] [0.12] [0.16] [0.16] [0.18] [0.24] Moment of Inertia 10-3 kgm 2 0,15 0,25 0, 1,60 2, 5,20 8,80 20,5 210 J [lb-in 2 x10-3 ] ges [0.04] [0.07] [0.14] [0.] [0.80] [1.] [2.60] [5.85] [9.20] [61.4] Approx. Weight kg 0,4 0,7 1,0 1,3 2,0 3,0 4,0 5,5 10 28 [lbs] [1.0] [1.5] [] [2.9] [4.4] [6.6] [8.8] [12.0] [.0] [63.0] Actuation Path 1,5 1,5 1,7 1,9 2,2 2,2 2,2 2,2 3,0 3,0 [0.06] [0.06] [0.07] [0.07] [0.09] [0.09] [0.09] [0.09] [0.12] [0.12] 202 [7.95] 2 [9.45] 5
Type 2 For actuation path see table Bore hole for wrench H MTL-2 with clamping hub Ø E Ø D 1 Ø D 2 Ø B / B F Materials: Bellows: Stainless Steel Interface: Hardened Steel Hub: Sizes 15-60, Aluminum Size 1 & larger, Steel I ISO 4762 A / A F F / F F DIN 6885 or inch keyway optional Temperature Range: -º to º [-º F to 248º F] Type 2 Fit Length Bore Diameter from Ø to Ø Outer Diameter of oupling Between enters A 75 [2.95] A F 75 2.95] B Series 15 60 1 200 0 0 800 10 82 [3.32] 82 [3.32] B F 62 [2.44] D 1 /D 2 10-26 [.39-1.02] E F 49 [1.93] F F H 6.5 [0.26] [0.67] 87 [3.43] 87 [3.43] 95 [3.74] 95 [3.74] 65 [2.56] [2.75] 27 [1.06] 12- [.47-1.18] 24 [0.94] 7.5 [] 102 [4.01] 102 [4.01] 73 [2.87] 83 [3.27] 112 [4.41] 112 [4.41] 15-32.59-1.26] 66 [2.60] [1.18] 29 [1.14] 9.5 [0.37] 23 [0.91] 116 [4.57] 118 [4.64] 92 [3.62] 3.86] 128 [5.04] 1 [5.12] -42 [.75-1.65] 81 [3.] [1.18] 11 [0.43] 27 [1.06] 128 [5.04] 1 [5.16] 99 [3.90] 1 [4.60] [1.57] 1 [5.51] 143 [5.63] 24-45 [.94-1.77] 90 [3.54] 33 [1.] 12.5 [0.49] 139 [5.47] 142 [5.59] [4.72] 132 [5.] 42 [1.65] 153 [6.02] 156 [6.14] -60 [1.18-2.36] 110 [4.33] 13 [0.51] 39 [1.53] 163 [6.41] 167 [6.57] 1 [5.] 1 [6.10] 51 [2.01] 7 [6.97] 181 [7.12] -60 [1.38-2.36] 123 [4.84] 45 [1.77] 43 [1.69] [0.67] 41 [1.61] 0 [7.48] 201 [7.91] 152 [5.] 7 [6.97] 45 [1.77] 3 8.78] 232 [9.13] 4 [6.85] 187 [7.36] 67 [2.64] -75-80 1.57-2.95] [1.97-3.15] 134 [5.27] [1.97] 54 [2.13] 18 [0.71] 2x 48 [2x 1.89] 157 [6.18] 65 [2.56] 61 [2.].5 [0.86] 2x [2x 2.16] ISO 4762 Screws I M5 M6 M8 M10 M12 M12 M16 2x M16 2x M20 Tightening Torque Approx. Weight Nm [in-lbs] kg lbs I 8 [2] 0.4 [.9] 15 [3] 0.6 [1.3] [9] 1.0 [] [16] 2.4 [5.3] [27] 4.0 [8.8] 1 [29] 5.9 [13.0] 200 [45] 9.6 [21.1] 2 [56] 14 [.8] 4 [106] 21 [46.3] Moment of 10-3 kgm 2 Inertia J ges 0.10 0.15 0.27 0.32 0.75 0.80 2. 2.80 5.10 5. 11.5 11.8.8 23.0 42.0 83.0 Torsional Stiffness Lateral Misalignment Angular Misalignment Lateral Spring Stiffness Actuation Path 10 3 Nm/Rad Degrees N/ [ft-lbs/in] T 20 15 39 28 76 5 110 1 1 420 0 510 0 780 14 0.15 [.006] A F, B F & F F - Full Disengagement Version 6 0. 0. 1 1.5 1 1.5 1 1.5 1 1.5 1.5 2 1.5 2 2 2.5 2.5 2.5 475 [18.7] 137 [5.4] 1.5 [.059] 900 [.4] 2 [10.4] 1.5 [.059] 0 [47.2] 1.7 [.067] 380 [15.0] 15 [59.0] 1.9 [.075] 4 [.1] 20 [80.3].087] 610 [24.0] 37 [147.6] 10 [41.3] 20 [.4] 8 [33.1] 2000 [78.7] 0. 3600 [141.7] 3.0 [.118]
Type 2T For actuation path see table Bore hole for wrench MTL-2T with tapered clamp connection Ø E Ø D 1 Ø D 2 Ø B / B F Materials: Bellows: Stainless Steel Interface: Hardened Steel Hub: Sizes 15-60, Aluminum Size 1 & larger, Steel Temperature Range: -º to º [-º F to 248º F] Remove jack screws A / A F F / F F ISO Type 2T Fit Length Bore Diameter from Ø to Ø Outer Diameter of oupling A Series 15 60 1 200 0 0 800 10 20 62 69 72 [2.44] [2.72] [2.84] 62 69 72 A F [2.44] [2.72] [2.84] B B F 62 [2.44] D 1 /D 2 10- [.39-.87] E F 49 [1.93] 13 [0.51] F F 13 [0.51] 80 [2.15] 80 [3.15] 65 [2.56] [2.76] 12-23 [.47-.90] 16 [0.63] 14 [0.] 84 [3.] 84 [3.] 94 [3.] 94 [3.] 73 [2.87] 83 [3.27] 27 [1.06] 12-29 [.47-1.14] 66 [2.60] 18 [0.71] [0.66] 93 [3.66] 93 3.66] 105 [4.13] 105 [4.13] 92 [3.62] [3.86] 32 [1.26] 15-37 [.59-1.46] 81 [3.] 18 [0.71] 99 [3.90] 102 [4.02] 99 [3.90] 1 [4.61] 32 [1.26] 111 [4.37] 114 [4.49] 20-44 [.78-1.73] 90 [3.54] [0.66] 114 [4.49] 1 [4.61] [4.73] 132 [5.20] 41 [1.61] 128 [5.04] 1 [5.16] 25-56 [.-0] 110 [4.33] 23 [0.91] 20 [0.79] 123 [4.84] 127 [5.00] 136 [5.36] 1 [5.51] 1 [5.32] 1 [6.10] 41 [1.61] 25-60 [.-2.36] 123 [4.84] 25 [0.] 151 [5.95] 151 [5.95] 152 [5.99] 7 [6.97] 49 [1.93] 5 [6.89] 184 [7.25] 4 [6.85] 187 [7.36] 61 [2.] 246 [9.69] 252 [9.92] 243 [9.57] 258 [10.16] 80 [3.15] -60 - -100 [1.18-2.36] [1.38-2.75] [1.97-3.94] 6x ISO I M4 M5 M5 M6 M6 M8 M8 M10 M12 M16 Tightening Torque Approx. Weight Nm [in-lbs] kg lbs I 4 [1.0] 0.3 [.7] 6 [1.0] 0.4 [.9] 8 [2.0] 1.2 [2.6] 12 [3.0] 2.3 [5.1] 14 [3.0] 3.0 [6.6] 18 [4.0] 5.0 [11.0] 25 [6.0] 6.5 [14.3] 133 [5.23] 20 [0.79] [9.0] 9.0 [.8] 157 [6.18] [1.18] 26 [1.02] 16.0] 16.3 [.9] 200 [7.87] 37 [1.46] [27.0] [77.2] Moment of 10-3 kgm 2 Inertia J ges 0.10 0.15 0.28 0.75 0.80 1.90 2.00 2.80 3.00 5. 6.00 11.0 12.8 20.0 42.0 257 Torsional Stiffness Lateral Misalignment Angular Misalignment Lateral Spring Stiffness Actuation Path 10 3 Nm/Rad Degrees N/ [ft-lbs/in] T 20 15 39 28 76 5 110 1 1 420 0 510 0 780 14 0.15 [.006] 0. 0. 0. 1 1.5 1 1.5 1 1.5 1 1.5 1.5 2 1.5 2 2 2.5 2.5 2.5 2.5 475 [18.7] 137 [5.4] 1.5 [.059] 900 [.4] A F, B F & F F - Full Disengagement Version 2 0 [10.4] [47.2] 1.5 [.059] 380 [15.0] 1.7 [.067] 15 [59.0] 4 [.1] 1.9 [.075] 20 [80.3].087] 610 [24.0] 37 10 20 [147.6] [41.3] [.4] 8 [33.1] 2000 [78.7] 3600 [141.7] 3.0 [.118] 0. 60 [238.9] 3.0 [.118] 7
Type E 1 Ø K S A / A F H I ISO 4762 For actuation path see table 1/2 Hole for adjusting wrench MTL-E Elastomer insert coupling with clamping hubs Ø E 1 Ø D 1 2 Ø D 2 Ø E 2 Ø B / B F Materials: Elastomer Insert: Molded, wear resistant, thermally stable polymer Interface: Hardened Steel Hub: Sizes 15-60, Aluminum Size 1 & larger, Steel 1 3 F / F F 2 I ISO 4762 DIN 6885 or inch keyway optional Temperature Range: -º to º [-º F to 248º F] oupling Properties Ø D E Elastomer Insert Vibration Dampening Electrically Isolating Backlash Free Press Fit Design ompensated for Lateral, Angular and Axial Misalignment Lateral Misalignment Angular Misalignment Axial Misalignment Type E Static Torsional Stiffness Nm/Rad Dynamic Torsional Stiffness Nm/Rad Lateral Misalignment Angular Misalignment Axial Misalignment Degrees 60 1 0 800 T 97 10600 18100 66080 TDYN 100 290 0 1801 Max Values 0.10 [0.004] 0.12 [0.005] 0.14 [0.005] 0.008] 0.8 0.8 0.8 0.8 ± 2 [± 0.079] ± 2 [± 0.079] ± 2 [± 0.079] ± 2 [± 0.079] 8
Type E Type E Fit Length Fit Length Length of Hub Hub Diameter from Ø to Ø Hub Diameter from Ø to Ø Diameter of the Hub Diameter of the Hub Between enters Screws ISO 4762/12.9 Tightening Torque Between enters MTL side Screws ISO 4762/12.9 Tightening Torque Nm [in-lbs] Nm [in-lbs] Screw head Diameter Approx. Weight Moment of 10-3 kgm 2 Inertia kg lbs A 60 1 0 800 96 [3.78] A F 96 [3.78] B 73 [2.87] B F 83 [3.27] 1 20 [0.79] 2 3 36 [1.42] D 1 12-32 [0.47-1.26 D 2 15-32 [0.59-1.26] E 1 56 [0] E 2 66 [2.60] F [1.18] F F 29 [1.14] 1 10 [039] 2 9.5 [0.37] H 1 21 [0.83] 106 [[4.] 108 [4.25] 92 [3.62] [3.86] 21 [0.83] 39 [1.53] - [0.75-1.38] -42 [0.75-1.65] 66.5 [2.62] 81 [3.] [1.18] 11 [0.43] 11 [0.43] 24 [0.94] 1 [5.51] 143 [5.63] [4.72] 132 [5.] 42 [1.65] 52 [2.05] 20-45 [0.78-1.77] -60 [1.18-2.36] 82 [3.23] 110 [4.33] 15 [0.59] 13 [0.51] 29 [1.14] 9 [7.04] 0 [7.48] 152 [5.] 7 [6.97] 46 [1.81] 45 [1.77] 74 [2.91] -80 [1.38-3.15] -75 [1.57-2.95] 136.5 [5.37] 132 [5.] [1.97] 54 [2.13] 23 [0.91] 18 [0.71].5 [1.99] I 1 15 290 M6 M8 M10 M16 [3] [8] [16] [65] H 2 23 [0.91] 27 [1.06] 39 [1.53] 48 [1.89] I 1 1 2 M8 M10 M12 2x M16 [9] [16] [29] [56] K S 57 [4] 1.0 [] 68 [2.68] 2.4 [5.3] 85 [3.] 5.8 [12.8] 139 [5.47] 14.3.5] J ges 0.7 2.3 11 33.5 Actuation Path 1.7 [.067] 1.9 [.075] Type ( Elastomer Insert) A B A B A B A B Inner diameter (elastomer Insert) 2.72 [0.107].2 [1.189] 38.2 [1.3] 60.5 [2.381] 9
Type P Ø E H 1 For actuation path see table Bore hole for wrench MTL-P Press-fit version with clamping hubs Materials: Bellows: Stainless Steel Interface: Hardened Steel Hub: Sizes 15-60, Aluminum Size 1 & larger, Steel Ø D 1 K I ISO 4762 Pretensioning A +0.5 / A F+0.5 2 F / F F Ø D 2 Ø B / B F Temperature Range: -º to º [-º F to 248º F] Six self-centered, tapered drive projection form a conical element that is molded into an aluminum hub. The mating piece is a metal bellow with a female tapered bore. The MTL-P is used for applications with limited accessibility. Model P Fit Length Bore Diameter from Ø to Ø Bore Diameter from Ø to Ø Outer Diameter of oupling Between enters A 76 [2.99] A F 76 [2.99] B Series 15 60 1 0 0 800 B F 62 [2.44] 83 [3.27] 83 [3.27] 1 / 2 28/ [1.10/0.87] D 1 8- [0.-0.87] D 2 8-26 [0.-1.02] E F 49 [1.93] F F H 6.5 [0.26] [0.67] 89 [3.] 89 [2.] 65 [2.56] [2.76] 97 [3.82] 97 [3.82] 33/27 [1./1.06] 10-25 [0.39-0.] 10- [0.39-1.18] 24 [0.94] 7.5 [] 105 [4.13] 105 [4.13] 73 [2.87] 83 [3.27] 115 [4.53] 115 [4.53] 39/ [1.53/1.] 12-32 [0.47-1.26] 12-32 [0.47-1.26] 66 [2.60] [1.18] 29 [1.14] 9.5 [0.37] 23 [0.91] 116 [4.57] 118 [4.64] 92 [3.62] [3.86] 128 [5.04] 1 [5.12] 43/ [1.69/1.38] 14-38 [0.-1.] 14-42 [0.-1.65] 81 [3.] [1.18] 11 [0.43] 27 [1.06] 143 [5.63] 146 [5.75] [4.73] 132 [5.20] 157 [6.18] 160 [6.] 52/42 [2.04/1.65] -56 [1.18-0] -60 [1.18-2.36] 110 [4.33] 36 [1.42] 13 [0.51] 39 [1.53] 166 [6.53] 1 [6.69] 1 [5.32] 1 [6.10] 180 [7.08] 184 [7.24] 61/52 [2./2.05] -60 [1.38-2.36] -60 [1.38-2.36] 123 [4.84] 45 [1.77] 43 [1.69] [0.67] 41 [1.61] 201 [7.91] 212 [8.34] 152 [5.99] 7 [6.97] 45/48 [1.77/1.89] -75 [1.57-2.95] -75 [1.57-2.95] 6x ISO I M5 M6 M8 M10 M12 M16 2x M16 Tightening Torque Approx. Weight Nm [in-lbs] kg lbs I 8 [2] 0.4 [.09] 15 [3] 0.6 [1.3] [9] 1.4 [3.1] [16] 2.4 [5.3] 1 [29] 5.9 [13] 200 [45] 9.6 [21.2] 134 [5.27] [1.97] 54 [2.13] 18 [0.71] 48 [1.89] 2 [56] 15 [33.1] Moment of 10-3 kgm 2 Inertia J ges 0.10 0.15 0.27 0.32 0.75 0.80 2. 2.80 6. 7.00 13.0.0 Torsional Stiffness Lateral Misalignment Angular Misalignment Lateral Spring Stiffness Actuation Path 10 3 Nm/Rad Degrees N/ [ft-lbs/in] T 12 10 18 16 90 60 0 0 260 2 390 0.15 [.006] A F, B F & F F - Full Disengagement Version 10 0. 0. 1 1.5 1 1.5 1 1.5 1 1.5 1.5 2 2 2.5 2.5 475 [18.7] 1.5 [.059] 137 [5.4] 900 [.4] 1.5 [.059] 2 [10.4] 0 [47.2] 1.7 [.067] 380 [15.0] 15 [59.0] 1.9 [.075] 4 [.1] 37 [147.6] 10 [41.3] 20 [.4] 8 [33.1] 2000 [78.7]
oupling Adapters for Inch-bored, Elastomer (Spider) ouplings H (PMT & PMK) MTL Size Product Number A B D E F PMT/PMK PMT PMK H 1 H 2 H 1 H 2 Fastener Tightening Torque 15 976880 976881 60 976882 1 976883 200 976884 0 976885 0 976886 800 976887 10 976888 20 976889 37.20 [1.465] 44.2 [1.7] 47.900 [1.886] 52.4 [2.063] 68 [2.677] 72.5 [2.854] 81.5 [3.209] 9 [3.6].9 [3.894] 143.2 [5.638] 20.00 [0.787] [0.866] 25.000 [0.4] 25 [0.4] [1.575] [1.575] [1.575] [1.969] [1.969] 80 [3.1] 13.20 [0.520].7 [0.697] 16.900 [0.665] 20.4 [0.803] 21.5 [0.846] 25 [0.4] 33 [1.299].2 [1.8] 38.9 [1.532] 51.2 [2.016].05 [0.7].05 [0.7] 25. [1.000] 25. [1.000] 38.10 [1.0] 38.10 [1.0] 38.10 [1.0].80 [2.000].80 [2.000] 76.20 [3.000] 10 [0.480] 1 [0.480] [0.669] [0.669] [0.669] [0.669] 26 [1.024].02 [1.1].02 [1.1].92 [2.005] 56.00 [05] 64 [2.520] 74 [2.913] 90 [3.543] [3.858] 114 [4.488] 128 [5.039] 1 [5.512] 1 [6.693] 2 [9.449] 24.0 [0.945] 26.5 [1.044].0 [1.1] 32.0 [1.260] 46.5 [1.8] 47.5 [1.871] 48.5 [.10] 61.0 [2.2] 60.0 [2.363] 92 [3.623] 32.0 [1.260] 39.0 [1.536] 43.0 [1.693] 46.0 [1.811] 51.0 [2.008].0 [2.166] 63.0 [2.481] 76.0 [2.993] 84.0 [3.8] 112.0 [4.411] 32.0 [1.260] 39.0 [1.563] 43.0 [1.693] 46.0 1.811] 54.0 [2.127] 58.0 [84] 67.0 [2.638] 76.0 [2.993] 92.0 [3.623] 118.0 [4.647] 26.0 [1.024] 32.0 [1.2].0 [1.378] 36.5 [1.437] 42.0 [1.654] 42.0 [1.654].5 [1.9] 61.0 [2.2] 68.0 2.678] 101 [3.977] 26.0 [1.024] 32.0 [1.2].0 [1.378] 37.0 [1.457] 45.0 [1.772] 45.0 1.772] 54.0 [2.126] 72.0 [2.8] 85.0 [3.347] 107.0 [4.214] M4 M5 M5 M6 M6 M8 M8 M10 M12 M16 4.60 Nm [3 ft/lbs] 9.5 Nm [7 ft/lbs] 9.5 Nm [7 ft/lbs] 16 Nm [12 ft/lbs] 16 Nm [12 ft/lbs] 39 Nm [29 ft/lbs] 39 Nm [29 ft/lbs] 77 Nm [57 ft/lbs] 1 Nm [100 ft/lbs] 3 Nm [242 ft/lbs] Notes: H 1 oupling Engaged H 2 oupling Disengaged To determine the total effective length of the coupling, add dimensions to H 1 or H 2. oupling adapters are designed to fit a variety of inch-sized bore, zero backlash, torsionally stiff high misalignment couplings. 11
Accessories Torque Adjusting Wrench DIN 1816 Note: The recoended spanner wrenches for MTL Sizes 0, 800, 10 & 20 are available from J.W. Winco, Inc. www.jwwinco.com. Proximity Switch for Emergency ut-off MTL Size Adjustable Spanner Wrenches Ring Dia. Range Pin Dia. Nexen # J.W. Winco 15 ALL 49 4 1660 ALL 4 1661 60 ALL 66 5 1469 1 ALL 82 5 14 200 ALL EXEPT FD 90 6 1662 200 FD 5 1471 0 ALL 114 6 1663 0 ALL 126 8 A512 800 ALL EXEPT FD 134 8 A520 800 FD 144 8 A520 10 ALL 163 8 A538 20 ALL EXEPT FD 210 10 A3 20 FD 6 10 A3 M12 x 1 LED.0 [ 1.97] 4.0 [.157] Product Number 1666 Technical Data Voltage 10 - VD Output urrent 200 ma Switch Frequency 2,000 Hz Protective System IP 67 Switch Type Normally Open Max. Detection ap 2 BU BN - + Switch Diagram BK Load Minimum Sprockets for PMT and PMK Re-engagement of the Full Disengage Design MTL Size MTL15 23T T hain Size 60 80 100 1 160 180 MTL 26T 21T 18T MTL60 29T 26T 20T MTL1 34T 27T 23T 20T MTL200 39T 26T 25T 18T 15T MTL0 34T 28T 24T 20T MTL0 37T T 27T T 18T MTL800 34T 29T 23T T MTL10 33T 26T T T T MTL20 25T 29T 25T T 20T T Put pressure on the disengagement detection ring with an installation tool (a screwdriver for example). Approximate Engagement (Press-In) Force 12 Model MTL15-xxx-FD MTL-xxx-FD MTL60-xxx-FD MTL1-xxx-FD MTL200-xxx-FD MTL0-xxx-FD MTL0-xxx-FD MTL800-xxx-FD MTL10-xxx-FD Engagement Force, Approximate Full Disengagement Design 20- N [5-10 lbs] 25--N [6-12 lbs] -60 N [7-14 lbs] - N [8-16 lbs] - N [8-16 lbs] -100 N [11- lbs] 60- N [13-26 lbs] 0-1000 N [112-4 lbs] 2000-00 N [4-674 lbs]
Product Selection Based on Torque Requirements As a rule, torque limiters are selected according to the required disengagement torque. This rating must be greater than the torque necessary for normal machine operation. The necessary disengagement torque is determined in accordance with the drive specifications. The following calculations have proven themselves as rule of thumb solutions. Disengagement Torque or Start-up Torque Without a Load T KN = Rated Torque of the Torque Limiter T AS = Peak Torque of Motor T KN = Rated Torque of the Torque Limiter P AN = Drive Power (kw) N = Speed of Drive (RPM) T KN = Rated Torque of the Torque Limiter = Angular Acceleration = Load Factor = 1 (Uniform Load) = 2 (Non-Uniform Load) = 3 (Jerky Load) Values for = 2-3 are usual for servo drives on machine tools Start-up Torque With a Load t = Acceleration Time (s) = Angular Speed In (s- 1 ) n = Speed of Drive (RPM) J L = Moment of Inertia on Load Side (kgm 2 ) J A = Moment of Inertia on Drive Side (kgm 2 ) T AS = Peak Torque of Motor T AN = Rated Torque of the Torque Limiter = Angular Acceleration = Load Factor = 1 (Uniform Load) = 2 (Non-Uniform Load) = 3 (Jerky Load) Values for = 2-3 are usual for servo drives on machine tools. t = Acceleration Time (s) = Angular Speed In (s- 1 ) n = Speed of Drive (RPM) J L = Moment of Inertia on Load Side (kgm 2 ) T AN = Load Torque J A = Moment of Inertia on Drive Side (kgm 2 ) T AS = Peak Torque of Motor Machine Tool - Feed Force Torque Spindle Drive Timing Belt Drive T AN = Load Torque S = Spindle Pitch F V = Feed Force = Spindle Efficiency T AN = Load Torque d o = Sprocket Diameter F V = Feed Force () (N) () (N) Spindle Motor Timing Belt Drive onversion Formulas kw (kilowatt) = 0.7457 x hp Nm (Newton-meter) = in-lbs / 8.849 Kgm 2 = 0.041 x lb-ft 2 Radial Belt Pull R P 9545 N d P P AN = Drive Power N = Speed of Drive d P = Sprocket or Pulley Pitch Radius (kw) (RPM) (m) 13
THE NEXEN ADVANTAE The trend in industry is to design and incorporate more automation into production processes. Machines are becoming more accurate, requiring a higher degree of precision. Machine downtime in an automated production environment is very costly. Broken components, expensive technicians, and long lead times for custom components. The use of a Nexen Mechanical Torque Limiter isolates the driving from the driven elements within a matter of milliseconds. This can be the difference between operating profitably or not. Features Adjustment range engraved on the outer diameter Actual values marked rather than percentages Adjustable without removal from the application Patented preload for zero backlash Small, guided actuation ring for fast reaction Double bearing support fo pulley / sprocket Large bores possible Areas of Application Machine Tools N Machining enters Woodworking Machines Automation Equipment Textile Industry Industrial Robots Sheet Metal Processing Machines Servo + D Motor Drives www.nexengroup.com In accordance with Nexen s established policy of constant product improvement, the specifications contained in this document are subject to change without notice. Technical data listed in this document are based on the latest information available at the time of printing and are also subject to change without notice. For current information, please consult www.nexengroup.com. Nexen roup, Inc. 560 Oak rove Parkway Vadnais Heights, MN 127 800.843.7445 Fax: 651.286.1099 www.nexengroup.com Nexen has sales offices throughout the United States, Europe, Japan, and Australia. ISO 9001 ertified 2012 Nexen roup, Inc. FORM NO: L-21693--0512