UMK Series Stepper Motors

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The UMK series provides high torque and low vibration. High resolution models are available.

Basic system
Low vibration
Resolution - 1.8º or 0.9º
Singe-phase 100-115 VAC
RoHS compliant

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Item #	Speed-Torque Characteristics	Holding Torque	Frame Size	Power Supply	Step Angle	CAD

UMK243AA	Graph	- 22 oz-in0.16 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK243BA	Graph	- 22 oz-in0.16 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK243MAA	Graph	- 22 oz-in0.16 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK243MBA	Graph	- 22 oz-in0.16 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK244AA	Graph	- 36 oz-in0.26 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK244BA	Graph	- 36 oz-in0.26 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK244MAA	Graph	- 36 oz-in0.26 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK244MBA	Graph	- 36 oz-in0.26 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK245AA	Graph	- 45 oz-in0.32 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK245BA	Graph	- 45 oz-in0.32 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK245MAA	Graph	- 45 oz-in0.32 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK245MBA	Graph	- 45 oz-in0.32 N·m	- 1.65 in42 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK264AA	Graph	- 55 oz-in0.39 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK264BA	Graph	- 55 oz-in0.39 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK264MAA	Graph	- 55 oz-in0.39 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK264MBA	Graph	- 55 oz-in0.39 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK266AA	Graph	- 127 oz-in0.9 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK266BA	Graph	- 127 oz-in0.9 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK266MAA	Graph	- 127 oz-in0.9 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK266MBA	Graph	- 127 oz-in0.9 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK268AA	Graph	- 191 oz-in1.35 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK268BA	Graph	- 191 oz-in1.35 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 1.8 °	-
UMK268MAA	Graph	- 191 oz-in1.35 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 0.9 °	-
UMK268MBA	Graph	- 191 oz-in1.35 N·m	- 2.22 in56.4 mm	- Single-Phase 100-115 VAC	- 0.9 °	-