RP17 BLDC Motor
RapidPower™ Series

Summary Details

Size: Nema 17
Peak Torque: to 136 oz-in or 96 Ncm

Compact yet powerful.
Our ElectroCraft RapidPower™ Nema 17 is a small-sized, high-performance and high-speed brushless motor with ball-bearing construction, dynamically balanced rotors, and low audible and magnetic noise. It does not include brushes or a commutator. It is compatible with all three-phase brushless DC motor amplifiers.

Additional Product Details

RP17 Outline Drawing

Model MAX
Length
A B C D E F G H I J
Front
Shaft
Diameter
Front
Shaft
Length
Pilot
Diameter
Pilot
Length
(Ref)
Mount Hole
Pattern
(Ref)
Mount
Hole
Spacing
(Ref)
Flange
External
Dimension
SQ (Ref)
Rear Shaft
Diameter
Rear
Shaft
Length
Encoder
Length (Ref)
Single Ended
Differential
RP17-12 1.60 in 0.1968 in
0.1963 in
0.81 in
±0.03
0.8660 in
0.8648 in
0.08 in [4] 4-40 in UNC-2B
0.17 in Deep Min
1.22 in 1.65 in 0.2500 in
0.2495 in
0.47 in
±0.040
0.35 in
0.55 in
RP17-22 2.40 in
RP17-36 3.20 in
RP17-45 4.00 in
RP17M-8 41 mm 5.000 mm
4.987 mm
20.6 mm
±0.76
22.00 mm
21.97 mm
2 mm [4] M3 x 0.5 4.3 mm
Deep Min
31 mm 42 mm 6.350 mm
6.337 mm
11.4 mm
±0.7
8.9 mm
14.0 mm
RP17M-16 61 mm
RP17M-25 81 mm
RP17M-32 101 mm
Technical Drawings

RP17 Speed / Torque Curves

rp17 rp17 rp17 rp17

RP17 Mechanical / Winding Data

Stack Size Models RP17-12 RP17-22 RP17-36 RP17-45
Continuous Stall Torque (oz-in) 12 22 36 45
Continuous Stall Torque (Ncm) 8 16 25 32
Peak Torque (oz-in) 21 60 100 136
Peak Torque (Ncm) 15 42 71 96
Motor Constant (oz-in / √ Watt) 3.50 5.80 8.40 9.00
Motor Constant (Ncm / √ Watt) 2.47 4.10 5.93 6.36
Electrical Constant (msec) 0.80 1.10 1.10 1.20
Mechanical Constant (msec) 8.50 4.40 3.10 2.70
Rotor Inertia (oz-in-sec2) 0.0008 0.0012 0.0016 0.0019
Rotor Inertia (g-cm2) 56.5 84.7 113.0 134.2
Thermal Resistance (C / Watts) 6.3 5.5 4.0 3.4
Weight (oz) 9.0 17.0 23.5 31.0
Weight (Kg) 0.3 0.5 0.7 0.9
Length (inches) 1.6 2.4 3.1 3.9
Length (mm) 40.6 61.0 78.7 99.1
Number of Poles 4 4 4 4

Winding Models 12V24 12V48 12V60 22V24 22V48 22V60 36V24 36V48 36V60 45V24 45V48 45V60
8V24 8V48 8V60 16V24 16V48 16V60 25V24 25V48 25V60 32V24 32V48 32V60
Design Voltage
(VDC)
24 48 60 24 48 60 24 48 60 24 48 60
Continuous Current
(Amps)
4.2 2.1 1.7 3.6 1.8 1.4 3.7 1.9 1.5 3.6 1.8 1.4
Peak Current
(Amps)
7.6 3.8 3.0 9.9 4.9 3.9 10.4 5.2 4.2 10.9 5.5 4.4
Voltage Constant
±10%
(VDC/kRPM)
2.1 4.2 5.3 4.5 9.0 11.3 7.1 14.2 17.8 9.2 18.4 23.0
Torque Constant
±10%
(oz-in / Amp)
2.8 5.7 7.2 6.1 12.2 15.2 9.6 19.2 24.1 12.4 24.9 31.1
Torque Constant
±10%
(Ncm / Amp)
1.977 4.025 5.084 4.308 8.615 10.734 6.779 13.558 17.018 8.756 17.583 21.961
Resistance
±10%
(Ohms)
0.7 2.5 4.0 1.1 4.4 5.5 1.3 4.8 7.2 1.9 7.6 11.4
Inductance
±10%
(mH)
0.5 2.0 3.0 1.2 4.8 6.2 1.4 5.0 7.5 2.3 9.2 14.0

RP17 Connection

hall diagram

RP17 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.

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
RP17M-16V24-100-D 2 days
RP17M-16V24-100-X 2 days
RP17M-25V24-100-D 2 days
RP17M-25V24-100-X 2 days
RP17M-32V24-100-D 2 days
RP17M-32V24-100-X 2 days
RP17M-8V24-100-D 2 days
RP17M-8V24-100-X 2 days

Europe, the Middle East and Africa

Part Number Description Typical Lead Time
No products available

Asia

Part Number Description Typical Lead Time
RP17M-16V24-100-D 2 days
RP17M-16V24-100-X 2 days
RP17M-25V24-100-D 2 days
RP17M-25V24-100-X 2 days
RP17M-32V24-100-D 2 days
RP17M-32V24-100-X 2 days
RP17M-8V24-100-D 2 days
RP17M-8V24-100-X 2 days