Please find our works drawings for the parts supplied to Farnell. The parts are modified motors from the base motors (i.e. reduced shaft ready for use with the Gearheads or back shaft reduced ready for the encoder) I have enclosed the Maxon base part number and the catalogue PDF that gives the electrical specifications 121391 MOTOR, 26MMDIA, 12VDC, 11W Farnell Order Code 176-1305. Maxon base part no 110937 121394 MOTOR, 26MMDIA, 24VDC, 11W Farnell Order Code 176-1306. Maxon base part no 110940 243066 MOTOR, 32MMDIA, 12VDC, 15W, THRO S Farnell Order Code1761307 Maxon base part no 236653 240987 MOTOR, 32MMDIA, 24VDC, 15W, THRO S Farnell Order Code1761308 Maxon base part no 236655 137576 MOTOR, 36MMDIA, 24VDC, 70W Farnell Order Code 1761309 Maxon base no 118798 Maxon motor UK Ltd Maxon House, Hogwood Lane, Finchampstead, Berkshire, RG40 4QW Tel: +44 (0) 118 9733337 Fax: +44 (0) 118 9737472 RE 36 36 mm, Graphite Brushes, 70 Watt M 1:2 Stock program Order Number Standard program Special program (on request) 118797 118798 118799 118800 118801 118802 118803 118804 118805 118806 118807 118808 118809 118810 Motor Data Values at nominal voltage 1 Nominal voltage V 18.0 24.0 32.0 42.0 42.0 48.0 48.0 48.0 48.0 48.0 48.0 48.0 48.0 48.0 2 No load speed rpm 6610 6210 6790 7020 6340 6420 5220 4320 3450 2830 2280 1780 1420 1180 3 Noloadcurrent mA 153 105 88.6 70.4 61.4 54.6 41.6 32.6 24.7 19.5 15.2 11.5 8.97 7.31 4 Nominal speed rpm 5880 5530 6120 6350 5660 5740 4520 3600 2720 2090 1530 1010 651 390 5 Nominal torque (max. continuous torque) mNm 70.2 78.2 77.1 77.9 79.9 79.5 81.5 82.2 83.6 84.1 84.1 83.8 84.1 83.1 6 Nominal current (max. continuous current) A 2.90 2.25 1.82 1.45 1.33 1.18 0.978 0.813 0.660 0.545 0.439 0.343 0.275 0.226 7 Stall torque mNm 730 783 832 866 786 785 627 504 403 326 258 198 158 127 8 Starting current A 28.6 21.5 18.7 15.3 12.6 11.1 7.22 4.80 3.06 2.04 1.30 0.784 0.501 0.334 9 Max. efficiency % 84 85 86 86 86 86 85 84 82 81 79 77 75 72 Characteristics 10 Terminal resistance 0.628 1.11 1.71 2.74 3.35 4.32 6.65 10.0 15.7 23.5 36.8 61.3 95.8 144 11 Terminal inductance mH 0.0988 0.201 0.300 0.487 0.597 0.760 1.15 1.68 2.62 3.87 5.96 9.70 15.1 21.9 12 Torque constant mNm / A 25.5 36.4 44.5 56.6 62.6 70.7 86.9 105 131 160 198 253 315 380 13 Speed constant rpm / V 375 263 215 169 152 135 110 90.9 72.7 59.8 48.2 37.8 30.3 25.1 14 Speed / torque gradient rpm / mNm 9.23 8.05 8.27 8.18 8.14 8.25 8.41 8.65 8.67 8.80 8.96 9.17 9.21 9.51 15 Mechanical time constant ms 6.00 5.89 5.84 5.81 5.81 5.80 5.81 5.81 5.82 5.83 5.84 5.86 5.85 5.88 2 16 Rotor inertia gcm 62.0 69.9 67.5 67.8 68.1 67.2 66.0 64.2 64.1 63.3 62.2 61.1 60.7 59.0 Specifications Operating Range Comments Thermal data n rpm Continuous operation 17 Thermal resistance housing-ambient 6.4 K / W In observation of above listed thermal resistance 18 Thermal resistance winding-housing 3.4 K / W (lines 17 and 18) the maximum permissible winding 19 Thermal time constant winding 44.2 s temperature will be reached during continuous 20 Thermal time constant motor 1120 s operation at 25C ambient. 21 Ambient temperature -30 ... +100C = Thermal limit. 22 Max. permissible winding temperature +125C Short term operation The motor may be briefly overloaded (recurring). Mechanical data (ball bearings) 23 Max. permissible speed 12000 rpm 24 Axial play 0.05 - 0.15 mm Assigned power rating 25 Radial play 0.025 mm 26 Max. axial load (dynamic) 5.6 N 27 Max. force for press fits (static) 5.6 N (static, shaft supported) 1200 N 28 Max. radial loading, 5 mm from flange 28 N maxon Modular System Overview on page 16 - 21 Other specifications Planetary Gearhead Encoder MR 29 Number of pole pairs 1 32 mm 256 - 1024 CPT, 30 Number of commutator segments 13 0.4 - 2.0 Nm 3 channels 31 Weight of motor 350 g Page 345 Page 265 Planetary Gearhead Encoder HEDS 5540 Values listed in the table are nominal. 32 mm 500 CPT, Explanation of the figures on page 49. 0.75 - 4.5 Nm 3 channels Page 234 Page 268 Tolerances may vary from the standard Planetary Gearhead Encoder HEDL 5540 specification. 32 mm 500 CPT, 1.0 - 6.0 Nm 3 channels Option Page 235 Page 270 Recommended Electronics: Preloaded ball bearings Planetary Gearhead DC-Tacho DCT ADS 50/5 Page 282 42 mm 22 mm ADS 50/10 283 3 - 15 Nm 0.52 V ADS E 50/5 283 Page 240 Page 277 ADS E 50/10 283 EPOS 24/5 303 EPOS2 50/5 303 EPOS P 24/5 306 Notes 18 324 maxon special program May 2009 edition / subject to change maxon special program