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 max 32 32 mm, Graphite Brushes, 15 Watt M 1:2 Stock program Order Number Standard program Special program (on request) 236651 236652 236653 236654 236655 236656 236657 236658 with cables 353220 353221 353222 353223 353224 353225 353226 353227 Motor Data Values at nominal voltage 1 Nominal voltage V 6.0 9.0 12.0 18.0 24.0 30.0 36.0 48.0 2 No load speed rpm 5830 4930 4670 5270 5930 5870 5830 3870 3 Noloadcurrent mA 153 83.2 58.4 44.8 38.6 30.5 25.2 11.7 4 Nominal speed rpm 3800 2980 2860 3550 4180 4140 4090 2080 5 Nominal torque (max. continuous torque) mNm 31.4 33.1 36.0 37.5 36.7 37.1 36.8 36.9 6 Nominal current (max. continuous current) A 3.42 2.02 1.55 1.21 0.998 0.798 0.656 0.328 7 Stall torque mNm 99.7 87.4 95.9 118 127 128 125 81.3 8 Starting current A 10.4 5.12 3.98 3.66 3.34 2.66 2.15 0.698 9 Max. efficiency % 75 75 77 79 80 80 80 76 Characteristics 10 Terminal resistance 0.577 1.76 3.02 4.92 7.19 11.3 16.7 68.8 11 Terminal inductance mH 0.0657 0.209 0.416 0.739 1.04 1.66 2.43 9.71 12 Torque constant mNm / A 9.58 17.1 24.1 32.2 38.2 48.2 58.3 117 13 Speed constant rpm / V 996 559 396 297 250 198 164 81.9 14 Speed / torque gradient rpm / mNm 59.9 57.6 49.5 45.5 47.1 46.3 47.1 48.4 15 Mechanical time constant ms 27.6 23.5 22.4 21.8 21.7 21.5 21.5 21.5 2 16 Rotor inertia gcm 43.9 39.0 43.3 45.9 44.0 44.4 43.6 42.4 Specifications Operating Range Comments Thermal data n rpm Continuous operation 17 Thermal resistance housing-ambient 7.5 K / W In observation of above listed thermal resistance 18 Thermal resistance winding-housing 2.1 K / W (lines 17 and 18) the maximum permissible winding 19 Thermal time constant winding 17.7 s temperature will be reached during continuous 20 Thermal time constant motor 791 s operation at 25C ambient. 21 Ambient temperature -20 ... +85C = Thermal limit. 22 Max. permissible winding temperature +125C Short term operation Mechanical data (ball bearings) The motor may be briefly overloaded (recurring). 23 Max. permissible speed 6000 rpm 24 Axial play 0.12 - 0.22 mm 25 Radial play 0.025 mm Assigned power rating 26 Max. axial load (dynamic) 7.6 N 27 Max. force for press fits (static) 110 N (static, shaft supported) 2000 N 28 Max. radial loading, 5 mm from flange 32 N maxon Modular System Overview on page 16 - 21 Mechanical data (sleeve bearings) Planetary Gearhead Encoder MR 23 Max. permissible speed 6000 rpm 32 mm 256 - 1024 CPT, 24 Axial play 0.12 - 0.22 mm 0.75 - 6.0 Nm 3 channels 25 Radial play 0.012 mm Page 232 / 234 / 235 Page 265 26 Max. axial load (dynamic) 5.0 N Spur Gearhead Encoder HED 5540 27 Max. force for press fits (static) 110 N 38 mm 500 CPT, (static, shaft supported) 2000 N 0.1 - 0.6 Nm 3 channels 28 Max. radial loading, 5 mm from flange 10.5 N Page 239 Page 269 / 271 Spindle Drive Other specifications 32 mm 29 Number of pole pairs 1 Page 251 / 252 / 253 30 Number of commutator segments 13 Recommended Electronics: 31 Weight of motor 211 g LSC 30/2 Page 282 ADS 50/5 282 Values listed in the table are nominal. ADS E 50/5 283 Explanation of the figures on page 49. EPOS2 Module 36/2 302 EPOS2 24/5 303 Option EPOS2 50/5 303 Sleeve bearings in place of ball bearings EPOS P 24/5 306 Notes 18 114 maxon DC motor May 2009 edition / subject to change maxon -max