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Oriental Motor offers a wide range of motion control products to meet a wide range of applications, select the appropriate application type below.

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1-800-GO-VEXTA (468-3982)
AC Input AR Series 3.35 in. (85 mm) NEMA 34/3.54 in. (90 mm) Closed Loop Stepper Motors
3.35 in. (85 mm)/3.54 in. (90 mm) AR Series Closed Loop Stepper Motors
The AR Series adopts our AlphaStep technology closed loop control so the motor does not lose synchronism even when subjected to abrupt load fluctuation or acceleration. Requires AR Series Driver.
- 3.35 in. (85 mm)/ 3.54 (90 mm) Frame Sizes
- Closed Loop
- AC Input
- Single or Double Shaft
- Geared Type Available
- Electromagnetic Brake Type Available
Unit of Measure
Items |
![]() ARM911AC 3.35 in. (85 mm) Closed Loop Stepper Motor Web Price $325.00
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![]() ARM911BC 3.35 in. (85 mm) Closed Loop Stepper Motor Web Price $329.00
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![]() ARM98AC 3.35 in. (85 mm) Closed Loop Stepper Motor Web Price $257.00
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![]() ARM98AC-T3.6 3.54 in. (90 mm) Closed Loop Stepper Motor Web Price $402.00
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![]() ARM98AC-T7.2 3.54 in. (90 mm) Closed Loop Stepper Motor Web Price $402.00
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Frame Size | - 3.35 in85 mm | - 3.35 in85 mm | - 3.35 in85 mm | - 3.54 in90 mm | - 3.54 in90 mm | |||||
Motor Length | - 4.31 in.109.5 mm | - 4.31 in.109.5 mm | - 3.13 in.79.5 mm | - 5.69 in.144.5 mm | - 5.69 in.144.5 mm | |||||
Driver Voltage Input Power | - AC | |||||||||
Speed-Torque Characteristics |
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![]() Speed - Torque Characteristics |
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![]() Speed - Torque Characteristics |
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![]() Speed - Torque Characteristics |
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![]() Speed - Torque Characteristics |
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![]() Speed - Torque Characteristics |
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Holding Torque |
- 560 oz-in4 N·m | - 560 oz-in4 N·m | - 280 oz-in2 N·m | - 624 oz-in4.5 N·m | - 1264 oz-in9 N·m | |||||
Shaft/Gear Type | - Round Shaft (No Gearhead) | - Round Shaft (No Gearhead) | - Round Shaft (No Gearhead) | - Taper Hobbed Gear | - Taper Hobbed Gear | |||||
Gear Ratio (X:1) | - | - | - | - 3.6 :1 | - 7.2 :1 | |||||
Backlash | - | - | - | - 25 arc min (0.417°) | - 15 arc min (0.25°) | |||||
Lost Motion | - | |||||||||
Shaft | - Single | - Double | - Single | - Single | - Single | |||||
Electromagnetic Brake | - Not Equipped | |||||||||
Permissible Speed Range (r/min) | - | - | - | - 0 ~ 500 | - 0 ~ 250 | |||||
Rotor Inertia | - 12 oz-in²2200×10-7 kg·m² | - 12 oz-in²2200×10-7 kg·m² | - 6 oz-in²1100×10-7 kg·m² | - 6 oz-in²1100×10-7 kg·m² | - 6 oz-in²1100×10-7 kg·m² | |||||
RoHS Compliant |
- These products do not contain substances that exceed the regulation values in the RoHS Directive. | |||||||||
Safety Standards |
- UL CSA EN CE | |||||||||
Permissible Overhung Load | - 0 in. from Shaft End = 58 lb0.2 in. from Shaft End = 65 lb0.39 in. from Shaft End = 76 lb0.59 in. from Shaft End = 87 lb0.79 in. from Shaft End = 108 lb0 mm from Shaft End = 260 N5 mm from Shaft End = 290 N10 mm from Shaft End = 340 N15 mm from Shaft End = 390 N20 mm from Shaft End = 480 N | - 0 in. from Shaft End = 58 lb0.2 in. from Shaft End = 65 lb0.39 in. from Shaft End = 76 lb0.59 in. from Shaft End = 87 lb0.79 in. from Shaft End = 108 lb0 mm from Shaft End = 260 N5 mm from Shaft End = 290 N10 mm from Shaft End = 340 N15 mm from Shaft End = 390 N20 mm from Shaft End = 480 N | - 0 in. from Shaft End = 58 lb0.2 in. from Shaft End = 65 lb0.39 in. from Shaft End = 76 lb0.59 in. from Shaft End = 87 lb0.79 in. from Shaft End = 108 lb0 mm from Shaft End = 260 N5 mm from Shaft End = 290 N10 mm from Shaft End = 340 N15 mm from Shaft End = 390 N20 mm from Shaft End = 480 N | - 0 in. from Shaft End = 49 lb0.2 in. from Shaft End = 56 lb0.39 in. from Shaft End = 67 lb0.59 in. from Shaft End = 78 lb0.79 in. from Shaft End = 90 lb0 mm from Shaft End = 220 N5 mm from Shaft End = 250 N10 mm from Shaft End = 300 N15 mm from Shaft End = 350 N20 mm from Shaft End = 400 N | - 0 in. from Shaft End = 49 lb0.2 in. from Shaft End = 56 lb0.39 in. from Shaft End = 67 lb0.59 in. from Shaft End = 78 lb0.79 in. from Shaft End = 90 lb0 mm from Shaft End = 220 N5 mm from Shaft End = 250 N10 mm from Shaft End = 300 N15 mm from Shaft End = 350 N20 mm from Shaft End = 400 N | |||||
Permissible Thrust Load | - 6.50 lb29 N | - 6.50 lb29 N | - 4 lb18 N | - 22 lb100 N | - 22 lb100 N | |||||
Permissible Thrust Load | - | |||||||||
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