Hurst Manufacturing

Discontinued for reference only
	BRUSHLESS DC MOTORS: BLDC Series
MODEL 4817-004 PECIFICATIONS

Geared Brushless DC Motor

A gearbox designed specifically for our smallest brushless DC motor provides a very compact package that produces a rated torque of 175 oz-in and a peak torque of 500 oz-in.

Gears are hobbed to AGMA 7 quality. Pinions and gear teeth are case hardened for wear resistance and ground steel shafts rotate in sintered bearings. The output shaft is supported by ball bearings. Both motor and gearhead are designed for outstanding service.

Gearboxes are available in a wide variety of sizes and ratios for all Hurst brushless DC motors. Consult your sales person for more information.

This size motor is also available without an encoder. BLDC 4817-003

Brushless DC Motors: BLDC Series

Motor Characteristics*

BLDC
Model
Number Cont.
Torque
Oz-In
(Nom) Peak
Torque
Oz-In
(Max) Rotor
Inertia
Oz-In-Sec²
(+10%) Therm
Resistance
°C/Watt
(+10%) Therm
Time
Constant
min(nom) Max
Allowable
Winding
Temp °C Winding
Type Poles Radial
Load
Oz(max) Axial
Load
Oz(max) Weight
Oz(nom)

4817-004 175 500 .0006 10 10 120 3Ų 8 80 48 ??

Gear Ratio Speed No Load RPM Rated Speed RPM

30.48:1 175 100

BLDC Model Number	Cont. Torque Oz-In (Nom)	Peak Torque Oz-In (Max)	Rotor Inertia Oz-In-Sec² (+10%)	Therm Resistance °C/Watt (+10%)	Therm Time Constant min(nom)	Max Allowable Winding Temp °C	Winding Type	Poles	Radial Load Oz(max)	Axial Load Oz(max)	Weight Oz(nom)
4817-004	175	500	.0006	10	10	120	3Ų	8	80	48	??

Gear Ratio	Speed No Load RPM	Rated Speed RPM
30.48:1	175	100

Winding Characteristics*

BLDC Model Number	Input Voltage VDC(max)	Ke VOLTS/krpm (+10%)	Kt Oz-In/AMP (+10%)	Phase Resistance OHMS (+10%)	Phase Induction MIL-H (+10%)	Cont. Current amp	Peak Current amp
4817-004	40	6.14	8.3	5.7	5.7	.84	4.8

*Motor mounted on a 4" x 4" x 1/8" Steel Plate.
Note: Operating volatages of 12 to 40 volts and/or other speed ranges and torques are available.

Pin #	Function
1	Winding Phase A
2	Winding Phase B
3	Winding Phase C
4	Motor Case Ground
5	V+ (Supply) for Halls/Encoder
6	V- (Return) for Halls/Encoder
7	Commutator S2 Output
8	Commutator S3 Output
9	Commutator S1 Output
10	Encoder A Output (Optional)
11	Encoder B Output (Optional)

Encoders are internally mounted, with an input voltage of 4.5 to 5.5 VDC and a resolution of 250 CPR. They are of a dual channel quadrature output type. Phase A leads phase B by 90^o + 30^o electrical, with clockwise rotation. Encoders having different values are also available.