LRPX22 Brushless DC Planetary Gear Motor
Low Noise RapidPower™ Xtreme Series

Summary Details

Size: 22mm (0.87 in)
Peak Torque: to 3.0 Nm (424.8 oz.in)
Continuous Stall Torque: to 2.5 Nm (354 oz.in)
Speed: to 2286 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

LRPX22 Outline Drawing

Technical Drawings

LRPX22 Speed / Torque Curves

LRPX22 Speed Torque Performance - 1 Stage LRPX22 Speed Torque Performance - 2 Stage LRPX22 Speed Torque Performance - 3 Stage LRPX22 Speed Torque Performance - 4 Stage

LRPX22 Mechanical / Winding Data

Winding Specifications

Part Number Voltage Resistance Inductance Number
of Poles
Torque
Constant
Voltage
Constant
Continuous
Running
Peak
Units Volts Ohms mH N-m/A oz-in/A V-sec/rad V/kRPM Torque
(N-m)
RPM Current
(A)
Torque
(N-m)
RPM Current
(A)

Motor Only

LRPX22-42V12 12 0.56 0.22 8 0.008 1.19 0.008 0.80 0.04 9000 5.0 0.09 1700 10.8
LRPX22-42V24 24 2.39 0.90 8 0.017 2.35 0.015 1.60 0.04 9000 2.5 0.09 1700 5.5
LRPX22-42V48 48 9.72 3.60 8 0.032 4.53 0.032 3.30 0.04 9000 1.3 0.09 1700 2.8

One Stage Gearbox

LRPX22-42V12-___-_003 12 0.56 0.22 8 0.026 3.75 0.027 2.80 0.09 2286 3.5 0.29 486 10.8
LRPX22-42V24-___-_003 24 2.39 0.90 8 0.052 7.40 0.053 5.60 0.09 2286 1.8 0.29 486 5.5
LRPX22-42V48-___-_003 48 9.72 3.60 8 0.101 14.27 0.110 11.55 0.09 2286 0.9 0.29 486 2.8
LRPX22-42V12-___-_004 12 0.56 0.22 8 0.033 4.64 0.033 3.47 0.12 1846 3.5 0.35 392 10.8
LRPX22-42V24-___-_004 24 2.39 0.90 8 0.065 9.17 0.066 6.93 0.12 1846 1.8 0.35 392 5.5
LRPX22-42V48-___-_004 48 9.72 3.60 8 0.125 17.67 0.137 14.30 0.12 1846 0.9 0.35 392 2.8
LRPX22-42V12-___-_008 12 0.56 0.22 8 0.058 8.21 0.059 6.13 0.21 1043 3.5 0.63 222 10.8
LRPX22-42V24-___-_008 24 2.39 0.90 8 0.115 16.22 0.117 12.27 0.21 1043 1.8 0.63 222 5.5
LRPX22-42V48-___-_008 48 9.72 3.60 8 0.221 31.27 0.242 25.30 0.21 1043 0.9 0.63 222 2.8

Two Stage Gearbox

LRPX22-42V12-___-_012 12 0.56 0.22 8 0.083 11.80 0.094 9.80 0.30 653 3.5 0.90 139 10.8
LRPX22-42V24-___-_012 24 2.39 0.90 8 0.165 23.33 0.187 19.60 0.30 653 1.8 0.90 139 5.5
LRPX22-42V48-___-_012 48 9.72 3.60 8 0.318 44.96 0.386 40.43 0.30 653 0.9 0.90 139 2.8
LRPX22-42V12-___-_015 12 0.56 0.22 8 0.103 14.61 0.116 12.13 0.37 527 3.5 1.12 112 10.8
LRPX22-42V24-___-_015 24 2.39 0.90 8 0.204 28.88 0.232 24.27 0.37 527 1.8 1.12 112 5.5
LRPX22-42V48-___-_015 48 9.72 3.60 8 0.393 55.67 0.478 50.05 0.37 527 0.9 1.12 112 2.8
LRPX22-42V12-___-_019 12 0.56 0.22 8 0.128 18.09 0.143 15.02 0.45 426 3.5 1.38 91 10.8
LRPX22-42V24-___-_019 24 2.39 0.90 8 0.252 35.75 0.287 30.04 0.45 426 1.8 1.38 91 5.5
LRPX22-42V48-___-_019 48 9.72 3.60 8 0.487 68.93 0.592 61.97 0.45 426 0.9 1.38 91 2.8
LRPX22-42V12-___-_027 12 0.56 0.22 8 0.183 25.85 0.205 21.47 0.65 298 3.5 1.50 63 8.2
LRPX22-42V24-___-_027 24 2.39 0.90 8 0.361 51.09 0.410 42.93 0.65 298 1.8 1.50 63 4.2
LRPX22-42V48-___-_027 48 9.72 3.60 8 0.696 98.49 0.846 88.55 0.65 298 0.9 1.50 63 2.2
LRPX22-42V12-___-_033 12 0.56 0.22 8 0.226 32.01 0.254 26.58 0.80 241 3.5 1.50 51 6.6
LRPX22-42V24-___-_033 24 2.39 0.90 8 0.447 63.26 0.508 53.16 0.80 241 1.8 1.50 51 3.4
LRPX22-42V48-___-_033 48 9.72 3.60 8 0.861 121.94 1.047 109.63 0.80 241 0.9 1.50 51 1.7

Three Stage Gearbox

LRPX22-42V12-___-_053 12 0.56 0.22 8 0.325 46.03 0.406 42.47 1.15 151 3.5 2.00 32 6.2
LRPX22-42V24-___-_053 24 2.39 0.90 8 0.642 90.97 0.811 84.93 1.15 151 1.8 2.00 32 3.1
LRPX22-42V48-___-_053 48 9.72 3.60 8 1.238 175.36 1.673 175.18 1.15 151 0.9 2.00 32 1.6
LRPX22-42V12-___-_066 12 0.56 0.22 8 0.402 56.99 0.502 52.58 1.43 122 3.5 2.00 26 5.0
LRPX22-42V24-___-_066 24 2.39 0.90 8 0.795 112.63 1.004 105.16 1.43 122 1.8 2.00 26 2.5
LRPX22-42V48-___-_066 48 9.72 3.60 8 1.533 217.11 2.071 216.88 1.43 122 0.9 2.00 26 1.3
LRPX22-42V12-___-_081 12 0.56 0.22 8 0.498 70.56 0.622 65.10 1.60 98 3.2 2.00 21 4.0
LRPX22-42V24-___-_081 24 2.39 0.90 8 0.985 139.44 1.243 130.19 1.60 98 1.6 2.00 21 2.0
LRPX22-42V48-___-_081 48 9.72 3.60 8 1.898 268.81 2.564 268.52 1.60 98 0.8 2.00 21 1.1
LRPX22-42V12-___-_094 12 0.56 0.22 8 0.575 81.44 0.717 75.13 1.60 85 2.8 2.00 18 3.5
LRPX22-42V24-___-_094 24 2.39 0.90 8 1.137 160.94 1.435 150.27 1.60 85 1.4 2.00 18 1.8
LRPX22-42V48-___-_094 48 9.72 3.60 8 2.191 310.26 2.960 309.93 1.60 85 0.7 2.00 18 0.9
LRPX22-42V12-___-_116 12 0.56 0.22 8 0.712 100.83 0.888 93.02 1.60 69 2.2 2.00 15 2.8
LRPX22-42V24-___-_116 24 2.39 0.90 8 1.407 199.27 1.777 186.04 1.60 69 1.1 2.00 15 1.4
LRPX22-42V48-___-_116 48 9.72 3.60 8 2.713 384.13 3.664 383.72 1.60 69 0.6 2.00 15 0.7
LRPX22-42V12-___-_144 12 0.56 0.22 8 0.882 124.84 1.100 115.17 1.60 56 1.8 2.00 12 2.3
LRPX22-42V24-___-_144 24 2.39 0.90 8 1.742 246.71 2.200 230.34 1.60 56 0.9 2.00 12 1.1
LRPX22-42V48-___-_144 48 9.72 3.60 8 3.358 475.58 4.537 475.08 1.60 56 0.5 2.00 12 0.6

Four Stage Gearbox

LRPX22-42V12-___-_186 12 0.56 0.22 8 1.024 145.00 1.419 148.63 2.50 43 2.4 3.00 9 2.9
LRPX22-42V24-___-_186 24 2.39 0.90 8 2.024 286.55 2.839 297.27 2.50 43 1.2 3.00 9 1.5
LRPX22-42V48-___-_186 48 9.72 3.60 8 3.901 552.39 5.855 613.11 2.50 43 0.6 3.00 9 0.8
LRPX22-42V12-___-_230 12 0.56 0.22 8 1.268 179.53 1.757 184.02 2.50 35 2.0 3.00 6 2.4
LRPX22-42V24-___-_230 24 2.39 0.90 8 2.505 354.78 3.515 368.04 2.50 35 1.0 3.00 6 1.2
LRPX22-42V48-___-_230 48 9.72 3.60 8 4.829 683.91 7.249 759.09 2.50 35 0.5 3.00 6 0.6
LRPX22-42V12-___-_285 12 0.56 0.22 8 1.570 222.27 2.176 227.84 2.50 28 1.6 3.00 6 1.9
LRPX22-42V24-___-_285 24 2.39 0.90 8 3.102 439.25 4.351 455.67 2.50 28 0.8 3.00 6 1.0
LRPX22-42V48-___-_285 48 9.72 3.60 8 5.979 846.75 8.975 939.83 2.50 28 0.4 3.00 6 0.5
LRPX22-42V12-___-_329 12 0.56 0.22 8 1.812 256.54 2.511 262.97 2.50 24 1.4 3.00 5 1.7
LRPX22-42V24-___-_329 24 2.39 0.90 8 3.580 506.98 5.022 525.93 2.50 24 0.7 3.00 5 0.8
LRPX22-42V48-___-_329 48 9.72 3.60 8 6.901 977.30 10.358 1084.74 2.50 24 0.4 3.00 5 0.4
LRPX22-42V12-___-_353 12 0.56 0.22 8 1.943 275.19 2.694 282.08 2.50 23 1.3 3.00 5 1.5
LRPX22-42V24-___-_353 24 2.39 0.90 8 3.840 543.83 5.387 564.17 2.50 23 0.7 3.00 5 0.8
LRPX22-42V48-___-_353 48 9.72 3.60 8 7.403 1048.35 11.112 1163.60 2.50 23 0.3 3.00 5 0.4
LRPX22-42V12-___-_407 12 0.56 0.22 8 2.243 317.62 3.109 325.58 2.50 20 1.1 3.00 4 1.3
LRPX22-42V24-___-_407 24 2.39 0.90 8 4.432 627.68 6.218 651.16 2.50 20 0.6 3.00 4 0.7
LRPX22-42V48-___-_407 48 9.72 3.60 8 8.544 1210.00 12.825 1343.01 2.50 20 0.3 3.00 4 0.4
LRPX22-42V12-___-_504 12 0.56 0.22 8 2.777 393.25 3.849 403.10 2.50 16 0.9 3.00 3 1.1
LRPX22-42V24-___-_504 24 2.39 0.90 8 5.488 777.13 7.699 806.19 2.50 16 0.5 3.00 3 0.5
LRPX22-42V48-___-_504 48 9.72 3.60 8 10.579 1498.09 15.878 1662.77 2.50 16 0.2 3.00 3 0.3
LRPX22-42V12-___-_624 12 0.56 0.22 8 3.438 486.88 4.766 499.07 2.50 13 0.7 3.00 3 0.9
LRPX22-42V24-___-_624 24 2.39 0.90 8 6.794 962.17 9.532 998.14 2.50 13 0.4 3.00 3 0.4
LRPX22-42V48-___-_624 48 9.72 3.60 8 13.098 1854.78 19.659 2058.67 2.50 13 0.2 3.00 3 0.2

General Specifications

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

One Stage Gearbox

LRPX22-42V__-___-_003 3.50 7 / 2 0.9 75.15 136.4 -40 °C to +100 °C 
LRPX22-42V__-___-_004 4.33 13 / 3 0.9 75.15 136.4 -40 °C to +100 °C 
LRPX22-42V__-___-_008 7.67 23 / 3 0.7 75.15 136.4 -40 °C to +100 °C 

Two Stage Gearbox

LRPX22-42V__-___-_012 12.25 49 / 4 1.1 80.65 148.1 -40 °C to +100 °C 
LRPX22-42V__-___-_015 15.17 91 / 6 1.1 80.65 148.1 -40 °C to +100 °C 
LRPX22-42V__-___-_019 18.78 169 / 9 1.2 80.65 148.1 -40 °C to +100 °C 
LRPX22-42V__-___-_027 26.83 161 / 6 1.1 80.65 148.1 -40 °C to +100 °C 
LRPX22-42V__-___-_033 33.22 299 / 9 1.1 80.65 148.1 -40 °C to +100 °C 

Three Stage Gearbox

LRPX22-42V__-___-_053 53.08 637 / 12 1.2 86 159.8 -40 °C to +100 °C 
LRPX22-42V__-___-_066 65.72 1183 / 18 1.2 86 159.8 -40 °C to +100 °C 
LRPX22-42V__-___-_081 81.37 2197 / 27 1.2 86 159.8 -40 °C to +100 °C 
LRPX22-42V__-___-_094 93.92 1127 / 12 1.2 86 159.8 -40 °C to +100 °C 
LRPX22-42V__-___-_116 116.28 2093 / 18 1.2 86 159.8 -40 °C to +100 °C 
LRPX22-42V__-___-_144 143.96 3887 / 27 1.2 86 159.8 -40 °C to +100 °C 

Four Stage Gearbox

LRPX22-42V__-___-_186 185.79 4459 / 24 1.2 90.6 171.5 -40 °C to +100 °C 
LRPX22-42V__-___-_230 230.03 8281 / 36 1.2 90.6 171.5 -40 °C to +100 °C 
LRPX22-42V__-___-_285 284.80 15379 / 54 1.2 90.6 171.5 -40 °C to +100 °C 
LRPX22-42V__-___-_329 328.71 7889 / 24 1.2 90.6 171.5 -40 °C to +100 °C 
LRPX22-42V__-___-_353 352.60 28561 / 81 1.2 90.6 171.5 -40 °C to +100 °C 
LRPX22-42V__-___-_407 406.97 14651 / 36 1.2 90.6 171.5 -40 °C to +100 °C 
LRPX22-42V__-___-_504 503.87 27209 / 54 1.2 90.6 171.5 -40 °C to +100 °C 
LRPX22-42V__-___-_624 623.84 50531 / 81 1.2 90.6 171.5 -40 °C to +100 °C 

LRPX22 Connection

hall diagram

LRPX22 CAD

Login Required to Access!

For access to our CAD, please submit your name and email address

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.

Rapid delivery products are stocked in locations all over the World. If the product you require is not stocked in your region, you may request accelerated delivery from other areas. Please consult your local representative for more information.

Customers are responsible for all freight charges.

Rapid Delivery to:

Select the region where the product would be delivered to.

The Americas

Part Number Description Typical Lead Time
LRPX22-042V24-110-S008 LRPX22 Brushless DC Planetary Gearmotor, FS 22, 42 mNm, 24V, Rear Shaft, Front Shaft Flat, Flying Leads, 2048 Line Diff. Encoder, 7.76:1 Gear Ratio 30 days
LRPX22-042V24-110-S019 LRPX22 Brushless DC Planetary Gearmotor, FS 22, 42 mNm, 24V, Rear Shaft, Front Shaft Flat, Flying Leads, 2048 Line Diff. Encoder, 18.78:1 Gear Ratio 30 days
LRPX22-042V24-110-S033 LRPX22 Brushless DC Planetary Gearmotor, FS 22, 42 mNm, 24V, Rear Shaft, Front Shaft Flat, Flying Leads, 2048 Line Diff. Encoder, 33.22:1 Gear Ratio 30 days
LRPX22-042V24-110-S066 LRPX22 Brushless DC Planetary Gearmotor, FS 22, 42 mNm, 24V, Rear Shaft, Front Shaft Flat, Flying Leads, 2048 Line Diff. Encoder, 65.72:1 Gear Ratio 30 days
LRPX22-042V24-110-S081 LRPX22 Brushless DC Planetary Gearmotor, FS 22, 42 mNm, 24V, Rear Shaft, Front Shaft Flat, Flying Leads, 2048 Line Diff. Encoder, 81.37:1 Gear Ratio 30 days

Europe, the Middle East and Africa

Part Number Description Typical Lead Time
No products available

Asia

Part Number Description Typical Lead Time
LRPX22-042V24-110-S008 LRPX22 Brushless DC Planetary Gearmotor, FS 22, 42 mNm, 24V, Rear Shaft, Front Shaft Flat, Flying Leads, 2048 Line Diff. Encoder, 7.76:1 Gear Ratio 30 days
LRPX22-042V24-110-S019 LRPX22 Brushless DC Planetary Gearmotor, FS 22, 42 mNm, 24V, Rear Shaft, Front Shaft Flat, Flying Leads, 2048 Line Diff. Encoder, 18.78:1 Gear Ratio 30 days
LRPX22-042V24-110-S033 LRPX22 Brushless DC Planetary Gearmotor, FS 22, 42 mNm, 24V, Rear Shaft, Front Shaft Flat, Flying Leads, 2048 Line Diff. Encoder, 33.22:1 Gear Ratio 30 days
LRPX22-042V24-110-S066 LRPX22 Brushless DC Planetary Gearmotor, FS 22, 42 mNm, 24V, Rear Shaft, Front Shaft Flat, Flying Leads, 2048 Line Diff. Encoder, 65.72:1 Gear Ratio 30 days
LRPX22-042V24-110-S081 LRPX22 Brushless DC Planetary Gearmotor, FS 22, 42 mNm, 24V, Rear Shaft, Front Shaft Flat, Flying Leads, 2048 Line Diff. Encoder, 81.37:1 Gear Ratio 30 days