LRPX32 Brushless DC Planetary Gear Motor
Low Noise RapidPower™ Xtreme Series

Summary Details

Size: 32mm (1.25 in)
Peak Torque: to 8.0 Nm (1,133 oz.in)
Continuous Stall Torque: 6.0 Nm (849.7 oz.in)
Speed: Up to 2489 RPM

Exquisitely efficient small form factor BLDC motor that has peak operating efficiency at traditional RPM ranges, allowing custom integration with a planetary gearbox. High torque from a small form factor, with low power consumption and peak performance at lower RPM for quiet operation.

Traditional BLDC motors have peak performance at very high RPMs. These speeds are simply too high to make efficient use of a gearbox, and even when a traditional BLDC motor is paired with a custom high-rpm gearbox there are typically noise and heat issues that make it prohibitive for discerning applications.

The LRPX carefully integrates the unique RPX series motor with a custom planetary gearbox. The result is a small form factor BLDC motor that can produce high torque at low RPM and offer strong, smooth operation with low noise!

Additional Product Details

LRPX32 Outline Drawing

Technical Drawings

LRPX32 Speed / Torque Curves

LRPX32 Speed Torque Performance - 1 Stage LRPX32 Speed Torque Performance - 2 Stage LRPX32 Speed Torque Performance - 3 Stage LRPX32 Speed Torque Performance - 4 Stage

LRPX32 Mechanical / Winding Data

Winding Specifications

Part Number Voltage Resis-
tance
Induc-
tance
Number
of Poles
Torque Constant Voltage Constant Continuous Running Peak
Units Volts Ohms mH Nm/A oz-in/A V-sec/
rad
V/kRPM Torque
(Nm)
RPM Current
(A)
Torque
(Nm)
RPM Current
(A)

Motor Only

LRPX32-090V12 12 0.22 0.193 8 0.012 1.72 0.012 1.25 0.08 8000 6.8 0.22 1600 17.7
LRPX32-090V24 24 0.96 0.600 8 0.024 3.32 0.024 2.45 0.08 8000 3.5 0.22 1600 9.2
LRPX32-090V48 48 3.68 2.300 8 0.048 6.75 0.048 5.00 0.08 8000 1.7 0.22 1600 4.5

One Stage Gearbox

LRPX32-090V12-___-_003 12 0.22 0.193 8 0.035 5.00 3.7E-3 35.7E-6 0.16 2489 4.6 0.62 498 17.7
LRPX32-090V24-___-_003 24 0.96 0.600 8 0.068 9.65 7.5E-3 71.3E-6 0.16 2489 2.4 0.62 498 9.2
LRPX32-090V48-___-_003 48 3.68 2.300 8 0.138 19.61 14.9E-3 142.6E-6 0.16 2489 1.2 0.62 498 4.5
LRPX32-090V12-___-_005 12 0.22 0.193 8 0.054 7.58 2.5E-3 23.5E-6 0.25 1641 4.6 0.95 328 17.7
LRPX32-090V24-___-_005 24 0.96 0.600 8 0.103 14.63 4.9E-3 47.0E-6 0.25 1641 2.4 0.95 328 9.2
LRPX32-090V48-___-_005 48 3.68 2.300 8 0.210 29.74 9.8E-3 94.0E-6 0.25 1641 1.2 0.95 328 4.5
LRPX32-090V12-___-_006 12 0.22 0.193 8 0.063 8.97 2.1E-3 19.9E-6 0.29 1387 4.6 1.12 277 17.7
LRPX32-090V24-___-_006 24 0.96 0.600 8 0.122 17.31 4.2E-3 39.7E-6 0.29 1387 2.4 1.12 277 9.2
LRPX32-090V48-___-_006 48 3.68 2.300 8 0.249 35.20 8.3E-3 79.5E-6 0.29 1387 1.2 1.12 277 4.5

Two Stage Gearbox

LRPX32-090V12-___-_010 12 0.22 0.193 8 0.102 14.46 1.2E-3 11.1E-6 0.39 774 3.9 1.81 155 17.7
LRPX32-090V24-___-_010 24 0.96 0.600 8 0.197 27.90 2.3E-3 22.2E-6 0.39 774 2.0 1.81 155 9.2
LRPX32-090V48-___-_010 48 3.68 2.300 8 0.401 56.73 4.6E-3 44.4E-6 0.39 774 1.0 1.81 155 4.5
LRPX32-090V12-___-_016 12 0.22 0.193 8 0.155 21.93 765.8E-6 7.3E-6 0.60 511 3.9 2.74 102 17.7
LRPX32-090V24-___-_016 24 0.96 0.600 8 0.299 42.32 1.5E-3 14.6E-6 0.60 511 2.0 2.74 102 9.2
LRPX32-090V48-___-_016 48 3.68 2.300 8 0.608 86.05 3.1E-3 29.3E-6 0.60 511 1.0 2.74 102 4.5
LRPX32-090V12-___-_019 12 0.22 0.193 8 0.183 25.95 647.1E-6 6.2E-6 0.71 431 3.9 3.24 86 17.7
LRPX32-090V24-___-_019 24 0.96 0.600 8 0.354 50.08 1.3E-3 12.4E-6 0.71 431 2.0 3.24 86 9.2
LRPX32-090V48-___-_019 48 3.68 2.300 8 0.719 101.83 2.6E-3 24.7E-6 0.71 431 1.0 3.24 86 4.5
LRPX32-090V12-___-_024 12 0.22 0.193 8 0.235 33.26 504.9E-6 4.8E-6 0.91 337 3.9 4.16 67 17.7
LRPX32-090V24-___-_024 24 0.96 0.600 8 0.453 64.19 1.0E-3 9.6E-6 0.91 337 2.0 4.16 67 9.2
LRPX32-090V48-___-_024 48 3.68 2.300 8 0.922 130.50 2.0E-3 19.3E-6 0.91 337 1.0 4.16 67 4.5
LRPX32-090V12-___-_028 12 0.22 0.193 8 0.278 39.36 426.7E-6 4.1E-6 1.07 284 3.9 4.50 57 16.2
LRPX32-090V24-___-_028 24 0.96 0.600 8 0.536 75.96 853.3E-6 8.1E-6 1.07 284 2.0 4.50 57 8.4
LRPX32-090V48-___-_028 48 3.68 2.300 8 1.091 154.44 1.7E-3 16.3E-6 1.07 284 1.0 4.50 57 4.1
LRPX32-090V12-___-_033 12 0.22 0.193 8 0.329 46.58 360.5E-6 3.4E-6 1.27 240 3.9 4.50 48 13.7
LRPX32-090V24-___-_033 24 0.96 0.600 8 0.635 89.90 721.1E-6 6.9E-6 1.27 240 2.0 4.50 48 7.1
LRPX32-090V48-___-_033 48 3.68 2.300 8 1.291 182.77 1.4E-3 13.8E-6 1.27 240 1.0 4.50 48 3.5

Three Stage Gearbox

LRPX32-090V12-___-_050 12 0.22 0.193 8 0.448 63.44 238.3E-6 2.3E-6 1.21 159 2.7 7.93 32 17.7
LRPX32-090V24-___-_050 24 0.96 0.600 8 0.865 122.43 476.5E-6 4.6E-6 1.21 159 1.4 7.93 32 9.2
LRPX32-090V48-___-_050 48 3.68 2.300 8 1.758 248.92 953.0E-6 9.1E-6 1.21 159 0.7 7.93 32 4.5
LRPX32-090V12-___-_060 12 0.22 0.193 8 0.530 75.07 201.3E-6 1.9E-6 1.44 134 2.7 8.00 27 15.1
LRPX32-090V24-___-_060 24 0.96 0.600 8 1.023 144.89 402.6E-6 3.8E-6 1.44 134 1.4 8.00 27 7.8
LRPX32-090V48-___-_060 48 3.68 2.300 8 2.080 294.58 805.3E-6 7.7E-6 1.44 134 0.7 8.00 27 3.8
LRPX32-090V12-___-_076 12 0.22 0.193 8 0.679 96.21 157.1E-6 1.5E-6 1.84 105 2.7 8.00 21 11.8
LRPX32-090V24-___-_076 24 0.96 0.600 8 1.311 185.69 314.2E-6 3.0E-6 1.84 105 1.4 8.00 21 6.1
LRPX32-090V48-___-_076 48 3.68 2.300 8 2.666 377.52 628.4E-6 6.0E-6 1.84 105 0.7 8.00 21 3.0
LRPX32-090V12-___-_090 12 0.22 0.193 8 0.804 113.86 132.7E-6 1.3E-6 2.18 88 2.7 8.00 18 10.0
LRPX32-090V24-___-_090 24 0.96 0.600 8 1.552 219.75 265.5E-6 2.5E-6 2.18 88 1.4 8.00 18 5.2
LRPX32-090V48-___-_090 48 3.68 2.300 8 3.155 446.77 531.0E-6 5.1E-6 2.18 88 0.7 8.00 18 2.5
LRPX32-090V12-___-_107 12 0.22 0.193 8 0.951 134.74 112.2E-6 1.1E-6 2.58 75 2.7 8.00 15 8.4
LRPX32-090V24-___-_107 24 0.96 0.600 8 1.836 260.06 224.3E-6 2.1E-6 2.58 75 1.4 8.00 15 4.4
LRPX32-090V48-___-_107 48 3.68 2.300 8 3.734 528.73 448.7E-6 4.3E-6 2.58 75 0.7 8.00 15 2.1
LRPX32-090V12-___-_116 12 0.22 0.193 8 1.030 145.92 103.6E-6 989.1E-9 2.79 69 2.7 8.00 14 7.8
LRPX32-090V24-___-_116 24 0.96 0.600 8 1.989 281.62 207.2E-6 2.0E-6 2.79 69 1.4 8.00 14 4.0
LRPX32-090V48-___-_116 48 3.68 2.300 8 4.043 572.58 414.3E-6 4.0E-6 2.79 69 0.7 8.00 14 2.0
LRPX32-090V12-___-_137 12 0.22 0.193 8 1.219 172.68 87.5E-6 835.8E-9 3.30 58 2.7 8.00 12 6.6
LRPX32-090V24-___-_137 24 0.96 0.600 8 2.353 333.28 175.0E-6 1.7E-6 3.30 58 1.4 8.00 12 3.4
LRPX32-090V48-___-_137 48 3.68 2.300 8 4.785 677.61 350.1E-6 3.3E-6 3.30 58 0.7 8.00 12 1.7
LRPX32-090V12-___-_162 12 0.22 0.193 8 1.443 204.36 74.0E-6 706.2E-9 3.91 49 2.7 8.00 10 5.5
LRPX32-090V24-___-_162 24 0.96 0.600 8 2.785 394.42 147.9E-6 1.4E-6 3.91 49 1.4 8.00 10 2.9
LRPX32-090V48-___-_162 48 3.68 2.300 8 5.663 801.90 295.8E-6 2.8E-6 3.91 49 0.7 8.00 10 1.4
LRPX32-090V12-___-_192 12 0.22 0.193 8 1.708 241.85 62.5E-6 596.8E-9 4.62 42 2.7 8.00 8 4.7
LRPX32-090V24-___-_192 24 0.96 0.600 8 3.296 466.77 125.0E-6 1.2E-6 4.62 42 1.4 8.00 8 2.4
LRPX32-090V48-___-_192 48 3.68 2.300 8 6.701 949.00 250.0E-6 2.4E-6 4.62 42 0.7 8.00 8 1.2

Four Stage Gearbox

LRPX32-090V12-___-_246 12 0.22 0.193 8 1.965 278.32 48.9E-6 466.7E-9 4.19 33 2.1 8.00 7 4.1
LRPX32-090V24-___-_246 24 0.96 0.600 8 3.793 537.16 97.7E-6 933.4E-9 4.19 33 1.1 8.00 7 2.1
LRPX32-090V48-___-_246 48 3.68 2.300 8 7.712 1092.12 195.5E-6 1.9E-6 4.19 33 0.5 8.00 7 1.0
LRPX32-090V12-___-_291 12 0.22 0.193 8 2.326 329.37 41.3E-6 394.4E-9 4.96 28 2.1 8.00 6 3.4
LRPX32-090V24-___-_291 24 0.96 0.600 8 4.489 635.70 82.6E-6 788.7E-9 4.96 28 1.1 8.00 6 1.8
LRPX32-090V48-___-_291 48 3.68 2.300 8 9.127 1292.45 165.2E-6 1.6E-6 4.96 28 0.5 8.00 6 0.9
LRPX32-090V12-___-_344 12 0.22 0.193 8 2.753 389.79 34.9E-6 333.2E-9 5.87 23 2.1 8.00 5 2.9
LRPX32-090V24-___-_344 24 0.96 0.600 8 5.312 752.30 69.8E-6 666.5E-9 5.87 23 1.1 8.00 5 1.5
LRPX32-090V48-___-_344 48 3.68 2.300 8 10.801 1529.53 139.6E-6 1.3E-6 5.87 23 0.5 8.00 5 0.7
LRPX32-090V12-___-_372 12 0.22 0.193 8 2.981 422.12 32.2E-6 307.7E-9 6.36 21 2.1 8.00 4 2.7
LRPX32-090V24-___-_372 24 0.96 0.600 8 5.753 814.70 64.4E-6 615.4E-9 6.36 21 1.1 8.00 4 1.4
LRPX32-090V48-___-_372 48 3.68 2.300 8 11.697 1656.39 128.9E-6 1.2E-6 6.36 21 0.5 8.00 4 0.7
LRPX32-090V12-___-_441 12 0.22 0.193 8 3.528 499.55 27.2E-6 260.0E-9 6.60 18 1.9 8.00 4 2.3
LRPX32-090V24-___-_441 24 0.96 0.600 8 6.808 964.14 54.5E-6 520.0E-9 6.60 18 1.0 8.00 4 1.2
LRPX32-090V48-___-_441 48 3.68 2.300 8 13.842 1960.22 108.9E-6 1.0E-6 6.60 18 0.5 8.00 4 0.6
LRPX32-090V12-___-_522 12 0.22 0.193 8 4.175 591.19 23.0E-6 219.7E-9 6.60 15 1.6 8.00 3 1.9
LRPX32-090V24-___-_522 24 0.96 0.600 8 8.057 1140.99 46.0E-6 439.4E-9 6.60 15 0.8 8.00 3 1.0
LRPX32-090V48-___-_522 48 3.68 2.300 8 16.381 2319.79 92.0E-6 878.9E-9 6.60 15 0.4 8.00 3 0.5
LRPX32-090V12-___-_565 12 0.22 0.193 8 4.521 640.22 21.2E-6 202.9E-9 6.60 14 1.5 8.00 3 1.8
LRPX32-090V24-___-_565 24 0.96 0.600 8 8.725 1235.62 42.5E-6 405.8E-9 6.60 14 0.8 8.00 3 0.9
LRPX32-090V48-___-_565 48 3.68 2.300 8 17.740 2512.19 85.0E-6 811.5E-9 6.60 14 0.4 8.00 3 0.5
LRPX32-090V12-___-_617 12 0.22 0.193 8 4.940 699.63 19.4E-6 185.7E-9 6.60 13 1.3 8.00 3 1.6
LRPX32-090V24-___-_617 24 0.96 0.600 8 9.535 1350.29 38.9E-6 371.3E-9 6.60 13 0.7 8.00 3 0.8
LRPX32-090V48-___-_617 48 3.68 2.300 8 19.386 2745.31 77.8E-6 742.6E-9 6.60 13 0.3 8.00 3 0.4
LRPX32-090V12-___-_668 12 0.22 0.193 8 5.350 757.65 18.0E-6 171.4E-9 6.60 12 1.2 8.00 2 1.5
LRPX32-090V24-___-_668 24 0.96 0.600 8 10.326 1462.28 35.9E-6 342.9E-9 6.60 12 0.6 8.00 2 0.8
LRPX32-090V48-___-_668 48 3.68 2.300 8 20.994 2973.00 71.8E-6 685.8E-9 6.60 12 0.3 8.00 2 0.4
LRPX32-090V12-___-_791 12 0.22 0.193 8 6.332 896.63 15.2E-6 144.9E-9 6.60 10 1.0 8.00 2 1.3
LRPX32-090V24-___-_791 24 0.96 0.600 8 12.220 1730.51 30.3E-6 289.7E-9 6.60 10 0.5 8.00 2 0.7
LRPX32-090V48-___-_791 48 3.68 2.300 8 24.845 3518.35 60.7E-6 579.5E-9 6.60 10 0.3 8.00 2 0.3
LRPX32-090V12-___-_936 12 0.22 0.193 8 7.493 1061.10 12.8E-6 122.4E-9 6.60 9 0.9 8.00 2 1.1
LRPX32-090V24-___-_936 24 0.96 0.600 8 14.462 2047.94 25.6E-6 244.8E-9 6.60 9 0.5 8.00 2 0.6
LRPX32-090V48-___-_936 48 3.68 2.300 8 29.402 4163.72 51.3E-6 489.6E-9 6.60 9 0.2 8.00 2 0.3
LRPX32-090V12-___-_999 12 0.22 0.193 8 8.868 1255.74 10.8E-6 103.4E-9 6.60 7 0.7 8.00 1 0.9
LRPX32-090V24-___-_999 24 0.96 0.600 8 17.114 2423.59 21.7E-6 206.9E-9 6.60 7 0.4 8.00 1 0.5
LRPX32-090V48-___-_999 48 3.68 2.300 8 34.796 4927.48 43.3E-6 413.8E-9 6.60 7 0.2 8.00 1 0.2

General Specifications

Part Number Ratio
(approx.)
Ratio
(Exact)
Backlash (avg)
(Degrees)
Length (Motor +
Gearhead) (mm)
Weight
(g)
Temperature
Range (°C)
System Inertia
(g.cm2)

One Stage Gearbox

LRPX32-090V__-___-_003 3.21 45/14 0.7 82.7 277 -40 °C to +100 °C 9.6
LRPX32-090V__-___-_005 4.88 39/8 0.8 82.7 277 -40 °C to +100 °C 8.7
LRPX32-090V__-___-_006 5.77 75/13 0.9 82.7 277 -40 °C to +100 °C 8.5

Two Stage Gearbox

LRPX32-090V__-___-_010 10.33 2025/196 1.0 89.9 310 -40 °C to +100 °C 8.2
LRPX32-090V__-___-_016 15.67 1755/112 1.2 89.9 310 -40 °C to +100 °C 8.1
LRPX32-090V__-___-_019 18.54 3375/182 0.8 89.9 310 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_024 23.77 1521/64 1.0 89.9 310 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_028 28.13 225/8 1.0 89.9 310 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_033 33.28 5625/169 1.0 89.9 310 -40 °C to +100 °C 8.0

Three Stage Gearbox

LRPX32-090V__-___-_050 50.37 78975/1568 1.2 96.3 342 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_060 59.61 151875/2548 1.2 96.3 342 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_076 76.39 68445/896 1.0 96.3 342 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_090 90.40 10125/112 0.9 96.3 342 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_107 106.98 253125/2366 0.9 96.3 342 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_116 115.86 59319/512 1.2 96.3 342 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_137 137.11 8775/64 1.2 96.3 342 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_162 162.26 16875/104 1.1 96.3 342 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_192 192.02 421875/2197 1.2 96.3 342 -40 °C to +100 °C 8.0

Four Stage Gearbox

LRPX32-090V__-___-_246 245.54 3080025/12544 1.4 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_291 290.58 455625/1568 1.4 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_344 343.88 11390625/33124 1.3 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_372 372.40 2669355/7168 1.2 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_441 440.71 394875/896 1.1 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_522 521.55 759375/1456 1.1 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_565 564.80 2313441/4096 1.4 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_617 617.22 18984375/30758 1.0 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_668 668.41 342225/512 1.4 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_791 791.02 50625/64 1.3 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_936 936.11 1265625/1352 1.3 102.8 374 -40 °C to +100 °C 8.0
LRPX32-090V__-___-_999 1107.83 31640625/28561 1.3 102.8 374 -40 °C to +100 °C 8.0

LRPX32 Connection

hall diagram

LRPX32 CAD

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ElectroCraft Rapid Delivery Program

Some versions of this product are available via ElectroCraft's Rapid Delivery Program. Lead times for these products are given in working days and stated below. Please note, these lead times may be exceeded during holiday periods or due to unforeseen circumstances. Always contact your local ElectroCraft representative for confirmation of availability.

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The Americas

Part Number Description Typical Lead Time
LRPX32-090V24-110-S006 30 days
LRPX32-090V24-110-S010 30 days
LRPX32-090V24-110-S019 30 days
LRPX32-090V24-110-S033 30 days
LRPX32-090V24-110-S060 30 days
LRPX32-090V24-110-S192 30 days

Europe, the Middle East and Africa

Part Number Description Typical Lead Time
No products available

Asia

Part Number Description Typical Lead Time
LRPX32-090V24-110-S006 30 days
LRPX32-090V24-110-S010 30 days
LRPX32-090V24-110-S019 30 days
LRPX32-090V24-110-S033 30 days
LRPX32-090V24-110-S060 30 days
LRPX32-090V24-110-S192 30 days