High-Precision Stepper Motor

0.9° step angle for finer positioning.

20 mm · NEMA 8 — 2 models

Model	Phase	Length (mm)	Current (A)	Holding torque (N·m)	Rotor inertia (g·cm²)	Weight (g)
HP20-28	2	28	0.5	0.009	2.2	42
HP20-33	2	33	0.6	0.012	2.8	55

28 mm · NEMA 11 — 3 models

Model	Phase	Length (mm)	Current (A)	Holding torque (N·m)	Rotor inertia (g·cm²)	Weight (g)
HP28-32	2	32	0.7	0.035	9	85
HP28-45	2	45	0.7	0.065	14	115
HP28-51	2	51	0.8	0.085	17	135

35 mm · NEMA 14 — 3 models

Model	Phase	Length (mm)	Current (A)	Holding torque (N·m)	Rotor inertia (g·cm²)	Weight (g)
HP35-28	2	28	0.8	0.07	10	100
HP35-40	2	40	1.0	0.14	16	145
HP35-52	2	52	1.0	0.20	22	185

42 mm · NEMA 17 — 3 models

Model	Phase	Length (mm)	Current (A)	Holding torque (N·m)	Rotor inertia (g·cm²)	Weight (g)
HP42-34	2	34	1.2	0.20	38	205
HP42-40	2	40	1.5	0.28	48	245
HP42-48	2	48	1.7	0.37	62	285

57 mm · NEMA 23 — 3 models

Model	Phase	Length (mm)	Current (A)	Holding torque (N·m)	Rotor inertia (g·cm²)	Weight (g)
HP57-41	2	41	2.0	0.42	130	460
HP57-56	2	56	3.0	1.05	280	710
HP57-76	2	76	4.0	1.55	510	1020

60 mm · NEMA 24 — 2 models

Model	Phase	Length (mm)	Current (A)	Holding torque (N·m)	Rotor inertia (g·cm²)	Weight (g)
HP60-55	2	55	3.0	0.85	320	810
HP60-100	2	100	4.0	2.5	700	1520

86 mm · NEMA 34 — 2 models

Model	Phase	Length (mm)	Current (A)	Holding torque (N·m)	Rotor inertia (g·cm²)	Weight (g)
HP86-80	2	80	4.0	3.2	1500	2150
HP86-118	2	118	5.0	5.0	2600	3050

Specifications are typical values; custom windings, shafts and connectors available on request.

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