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is a high‑speed 75.4 mm outer‑rotor frameless BLDC torque motor, powered by standard 48 VDC industrial power supply. It delivers 485 W rated power, 1.4 Nm continuous rated torque and up to 4.2 Nm peak torque, with maximum speed reaching 4500 RPM.
Housing‑less split stator‑rotor design enables full embedding into customer‑custom mechanical structures. At only 233 g weight and 21.2 mm stack length, it achieves outstanding power‑to‑size ratio. Low cogging ensures smooth rotation and high dynamic response for high‑speed precision motion. We provide custom winding, cable modification and OEM/ODM service for system integrators, robot manufacturers and automation equipment suppliers.Suitable for high‑speed compact automation equipment:
Industrial automation and rotary positioning platforms
Portable medical automation devices
High‑speed optical inspection equipment
AGV / AMR drive and steering units
Special‑purpose high‑speed automated machinery
Customization is available upon request for this motor series, including but not limited to rated voltage, speed, torque, lead wire specifications, outlet orientation, shaft configuration, encoder/sensor integration, and more. Please provide your specific requirements, and we will offer a tailored solution for you.
Dimensions
Items
SY75BLW33
Tolerance
Rotor outer diameter D
75.4 mm
±0.15
Magnetic ring inner diameter D1
72 mm
0/+0.05
Magnetic ring length L
21.2 mm
±0.1
Rotor bonding dimension L1
2 mm
±0.3
Stator inner diameter D2
51 mm
-0.4
Stator length L2
14.35 mm
±0.2
Non‑wiring‑end height E
3 mm
MAX
Wiring‑end height F
5 mm
MAX
Electrical Specifications
Item
Unit
SY75BLW33‑48V
Number of poles
—
28
Number of phases
—
3
Rated voltage
VDC
48
Rated torque
N.m
1.4
Rated current
A
12
Rated speed
RPM
3300
Rated power
W
485
Maximum speed
RPM
4500
Peak torque
N.m
4.2
Peak current
A
36
Line‑to‑line resistance
ohms@20℃
0.23
Line‑to‑line inductance
mH
0.165
Torque constant
N.m/A
0.125
Back EMF
Vrms/KRPM
7.6
Motor length
mm
21.2
Weight
g
233
Electrical time constant
ms
0.72
Electric Connection:
Color
Type
Functions
White (WHT)
UL1332 AWG26
NTC
White (WHT)
UL1332 AWG26
NTC
Yellow
UL1332 AWG24
Phase U
Red
UL1332 AWG24
Phase V
Black
UL1332 AWG24
Phase W
Torque Performance Curves
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2017
Total Annual:
10 million USD-15million USD
Employee Number:
100~300
Ecer Certification:
Verified Supplier
Shenzhen Seninter Precision Machinery Co., Ltd. integrates R&D, production, sales and after-sales services. We specialize in the R&D and manufacturing of AC motors, DC motors, servo motors, brushless motors, gearboxes, geared motors and harmonic reducers, as well as supporting components for... Shenzhen Seninter Precision Machinery Co., Ltd. integrates R&D, production, sales and after-sales services. We specialize in the R&D and manufacturing of AC motors, DC motors, servo motors, brushless motors, gearboxes, geared motors and harmonic reducers, as well as supporting components for...