RAS Direct Drive Permanent Magnet DC Stepper Motors

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Permanent Magnet DC Stepper Motor Family

Series RAS, RBS Direct Drive Stepper

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Permanent Magnet DC Stepper Motor RAS, RBS Direct Drive Specifications:

Step Angle:	7.5° & 15°
Position Accuracy:	+/- 5% max.
Number of Phases:	4 phase bifilar
Insulation Class:	Class A (105°C)
Lead Wire:	6 leads (approx. 12 inches [304.8 mm])
Operation Ambient Temp:	-10°C to +40°C (approx.)
Shaft Bearing:	Sleeve or Ball Bearing Available
Note: Typical data subject to change without notification

Addtional Information:

Designed specifically to combine greater torque and small size, the RAS and RBS stepping motors meet many industrial and instrument requirements. Standard 7.5° & 15° step angle motors have a torque rating at 4-5 p/s of 23 ounce-inches [162.4 mN-m]. The Hi-Torque model is rated at 29 ounce-inches [204.8 mN-m].

Dual sleeve bearings are standard, ball bearings may be specified. Double-ended shafts also are available.

Notes:
1. Standard RAS and RBS direct drive motors have 4-phase bifilar windings (6 lead wires) and unipolar operation.

RAS, RBS Direct Drive Drawings:

RAS, RBS Direct Drive Diagrams:

RAS, RBS Direct Drive Model Table:

Add to Cart	Model	Part Number	Nom. Voltage (Vdc)	Step Angle (deg)	Steps per Rev	Rated Torque @ 4-5 p/s (oz-in)	Rated Torque @ 4-5 p/s (mN-m)	Holding Torque (oz-in) (2 Phase Energized)	Holding Torque (mN-m) (2 Phase Energized)	Full Load Temp Rise (deg C)	Input Power (watts)	Winding Res. (ohms)	Rotor Inertia (oz-in²)	Rotor Inertia (gm-cm²)	Weight (oz)	Weight (g)
	RAS	3903-001	12	7.5	48	23	162	33	233	55	12	24	.92	168.3	26	737.1
	RAS	3906-001¹	12	7.5	48	29	205	37	261	55	12	24	.92	168.3	26	737.1
	RAS	3903-002	6	7.5	48	23	162	33	233	55	12	6	.92	168.3	26	737.1
	RAS	3903-003	24	7.5	48	23	162	33	233	55	12	96	.92	168.3	26	737.1
	RBS	3904-001	12	15	24	13	91.8	24	169.5	60	12	24	.92	168.3	26	737.1
	RBS	3904-002	6	15	24	13	91.8	24	169.5	60	12	6	.92	168.3	26	737.1
	RBS	3904-003	24	15	24	13	91.8	24	169.5	60	12	96	.92	168.3	26	737.1
	RBS	3907-002¹	12	15	24	17	120	27	190.7	60	12	24	.92	168.3	26	737.1

Notes:
¹ Hi-Torque Rotor Construction.

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