Description

Application Scenarios

Imagine a small-batch manufacturing facility operating a fleet of desktop CNC engraving machines for customized electronic enclosures. The machines run eight hours a day, cutting intricate patterns with tight tolerances. When the original motors began to show signs of wear—missed steps during rapid traverses and audible vibration at mid-range speeds—production quality declined, and scrap rates rose.

The K&S 2H17SH-KS02 directly addresses this pain point. Its optimized rotor balancing and low-inductance winding design ensure smooth operation even at speeds up to 3000 steps per second, maintaining torque integrity and eliminating the “mid-range resonance” that plagues lesser motors. Equipped with a 4-wire bipolar interface and compatible with mainstream microstepping drivers such as DM542 and TMC2209, the 2H17SH-KS02 integrates seamlessly into existing systems. For engineering teams managing mixed fleets of automation equipment, the 2H17SH-KS02 provides a standardized, dependable motion control building block that simplifies spare parts inventory and reduces maintenance complexity.

Parameters

Main Parameters	Value/Description
Product Model	K&S 2H17SH-KS02
Manufacturer	K&S (Kulicke & Soffa / K&S Motion Technology)
Product Category	Two-Phase Hybrid Stepping Motor
Frame Size	NEMA 17 (42mm × 42mm flange)
Step Angle	1.8° (200 steps/revolution)
Phases	2
Rated Current (per phase)	1.7A
Holding Torque	≥4.2 kg·cm (approx. 0.41 N·m)
Rotor Inertia	Approx. 54 g·cm²
Insulation Class	Class B (130°C)
Winding Configuration	4-wire (A+, A-, B+, B-)
Shaft Diameter	5mm (standard single shaft)
Body Length	Approx. 40mm
Protection Rating	IP40 to IP54 (varies by configuration/environment)
Operating Temperature	-20°C to +50°C

Technical Principles and Innovative Values

Innovation Point 1: Optimized Torque-Speed Curve for Mid-Range Stability
The K&S 2H17SH-KS02 features winding designs that optimize inductance and resistance matching, enabling the motor to retain over 80% of its holding torque even at speeds up to 1000 RPM. This characteristic is critical for applications requiring consistent force output across varying speeds, such as CNC feed drives and 3D printer extruder mechanisms. Many competing motors suffer from rapid torque falloff above 300 RPM, but the 2H17SH-KS02 maintains reliable performance through its carefully matched electrical parameters.
Innovation Point 2: Precision Mechanical Construction for Low Vibration
The 2H17SH-KS02 employs high-precision ball bearings and precision-balanced rotors, resulting in significantly reduced vibration and acoustic noise compared to motors with plain bearings. This makes the motor particularly suitable for office- or laboratory-environment equipment such as medical analyzers, desktop fabrication tools, and automated inspection systems, where noise levels and smooth motion are critical to operational quality.
Innovation Point 3: Flexible Integration and Upgrade Path
Although primarily designed as an open-loop stepper motor, the 2H17SH-KS02‘s mechanical structure fully supports retrofitting with encoder systems for closed-loop stepper applications. This future-proofing allows system integrators to start with cost-effective open-loop control and later upgrade to closed-loop configurations without replacing the motor hardware, providing a scalable motion control solution.
Innovation Point 4: Durable Build and Reliable Materials
The 2H17SH-KS02 is built with all-copper windings, high-grade neodymium magnets, and flexible silicone lead wires with secured terminals. The use of Class B insulation ensures thermal reliability, while the robust construction minimizes the risk of conductor fatigue and connection failures in dynamic cable management applications.