Hybrid Linear Stepper Motor Haydon Kerk, Ø 21 mm

Series 21000 by Haydon Kerk Motion Solutions is a 21 mm hybrid stepper motor linear actuator.

• Available in three designs - captive, non-captive and external linear versions
• Step angle 1,8°, bipolar
• Stroke (non-captive, external), up to 200 mm
• Locked-Stroke length, 9 - 38 mm
• Max. force 10 - 45 N
• Movement / step 1.5 - 40 μm

Hybrid stepper motor linear actuators open new avenues for equipment designers who require high performance and exceptional endurance in a very small package. Applications include medical instrumentation, office equipment, appliances, optics, machinery automation and other automated devices which require precise remote controlled linear movements.

The various patent pending designs use a proprietary manufacturing process, which incorporates engineering thermoplastics in the rotor drive nut and a stainless steel acme lead screw. This allows the linear actuator to be much quieter, more efficient and more durable than the v-thread and bronze nut configuration commonly used in other linear actuators.

Size 8, Series 21000 Hybrid Linear Stepper Motor (1.8° step angle)
Product No.	Locked Structure	21H4(X)-V
	Free Structure	21F4(X)-V
	External Locking	E21H4(X)-V
Wiring		Bipolar
Winding Voltage		2.5 VDC	5 VDC	7.5 VDC
Current/Phase		0.49 A	0.24 A	0.16 A
Resistance/Phase		5.1 Ω	20.4 Ω	45.9 Ω
Inductance/Phase		1.5 mH	5 mH	11.7 mH
Power Input		2.45 W
Weight		43 g
Linear movement/step Screw 3.50 mm (0.138”)				Order code
Inches		mm
0.000098		0.0025		AA
0.00019		0.005		AB
0.00039		0.01		AC
0.00078		0.02		AD
0.00157		0.04		AE
0.00048		0.0121		J
0.00024		0.006		K
0.00012		0.003		N
0.00006		0.0015		U