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Description
Stepper Motor with 28cm Lead Screw:200 Steps-Rev, 42x38mmThis NEMA 17 size hybrid bipolar stepping motor has an integrated 28 cm (11) threaded rod as its output shaft, turning it into a linear actuator capable of precision open loop positioning. The included traveling nut has four mounting holes and moves 40 m (1. 6 mil) per full step; finer resolution can be achieved with microstepping. The stepper motor has a 1. 8 step angle (200 steps revolution) and each phase draws 1. 7 A at 2. 8 V, allowing for a
This NEMA 17-size hybrid bipolar stepping motor has an integrated 28 cm (11″) threaded rod as its output shaft, turning it into a linear actuator capable of precision open-loop positioning. The included traveling nut has four mounting holes and moves 40 µm (1.6 mil) per full step; finer resolution can be achieved with microstepping. The stepper motor has a 1.8° step angle (200 steps/revolution) and each phase draws 1.7 A at 2.8 V, allowing for a holding torque of 3.7 kg-cm (51 oz-in).This linear positioning drive consists of our 42×38 mm NEMA17 stepper motor with a built-in lead screw in place of the normal output shaft, which makes it easy to move an object or platform in a linear motion with the precision of a stepper motor. Motors like this are especially popular for use in home-built 3D printers (e.g. RepRap) and CNC machines. The stainless steel threaded rod extends 28 cm (11″) from the face of the stepper motor, and since it is integrated into the motor itself, you do not have to deal with bulky shaft couplers or loose set screws.
The included copper alloy traveling nut (also known as a carriage nut) features a mounting flange with four holes threaded for M3 screws. The nut moves 8.0 mm per full revolution of the lead screw, which allows for a linear resolution of 0.040 mm per full step of the stepper motor. Even smaller step sizes can be achieved through microstepping, which is a feature of many bipolar stepper motor drivers. We recommend the DRV8825 stepper motor driver carrier for use with this stepper motor, which allows for a linear resolution of 1.25 µm per 1/32 microstep.
The maximum achievable linear speed depends a lot on the details of the system, including the load and motor supply voltage. Under ideal conditions (e.g. with gradual ramping up of the step rate, a high supply voltage, and no load), we were able to achieve speeds close to 30 cm/s (12 in/s).
The stepper motor has a 1.8° step angle (200 steps/revolution) and each phase draws 1.7 A at 2.8 V, allowing for a holding torque of 3.7 kg-cm (51 oz-in). The motor has four color-coded wires terminated with a JST XHP-4 connector with 0.1" spacing: black and green connect to one coil; red and blue connect to the other. It can be controlled by a pair of suitable H-bridges (one for each coil), but we recommend using a bipolar stepper motor driver.
Specifications
- Size: 42.3 mm square × 38 mm, not including the shaft (NEMA 17)
- Weight: 385 g (13.5 oz)
- Shaft diameter: 8 mm threaded rod
- Shaft length: 28 cm (11″)
- Steps per revolution: 200
- Linear step size: 40 µm (1.6 mil) per full step
- Current rating: 1.68 A per coil
- Voltage rating: 2.8 V
- Resistance: 1.65 Ohm per coil
- Holding torque: 3.7 kg-cm (51 oz-in)
- Inductance: 3.2 mH per coil
- Lead length: 165 mm (6.5″)
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4.2 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Great interactive toy for energetic dogs
This ball has been a great way to keep my dog entertained, especially when I can’t play nonstop. The movement really grabs their attention, and the 3 play modes are a nice touch depending on how energetic your dog is feeling. It works well both indoors and outside, and my dog loves chasing it around. It's not noisy at all and has thicker material so it cannot be easily chewed or ripped.
The E-TPU material feels durable and has held up well so far, even with pretty rough play. It’s easy to use, simple to switch modes, and keeps my dog busy for a good amount of time without getting bored.
Definitely a fun and engaging toy for medium to large dogs, especially if they need extra stimulation. Would recommend for supervised play!
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Reviewed in the United States on December 14, 2025
★★★★★ 5
Keeps him entertained!
My dog loves this ball! It's very durable, I love how it moves and jumps aorunf on it own keeping my dog entertained. The battery life is great, I have no complaints. It's very quiet also.
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Reviewed in the United States on March 3, 2026
★★★★★ 4
Keeps the dog occupied
The ball seems to work fine. My only complaint is that it’s a little loud.
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Reviewed in the United States on June 9, 2026
★★★★★ 3
Noise, but Has Good Qualities as Well
I bought this for my German Shepherd (117lbs). He is interested and will play with it for at least 15 minutes before moving onto other toys.
The movement is great. Quite sporadic which keeps my dog guessing which way it will roll.
Drawback: The sounds made by the ball while enabled are quite loud and can get annoying to us humans after a while. Heaven forbid if it gets stuck when it was in a movement mode...Continues to Buzz loudly until "rescued".
My Shepherd likes to chew like any other dog. The pressure on his mouth is tremendous. This ball takes it.
The size is also key. Large enough to not be a choking hazard for big mouths. So safety is apparent. The material allows a lot of "slobber", but seems to either wick it away (to where - haven't a clue). If I handle it - it is miraculously dry.
This would be the perfect toy if the noise level wasn't nearing "10".
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Reviewed in the United States on February 12, 2026
★★★★★ 5
Exciting vibrating ball
My dog loves the Lovkid Dog Ball. The bouncing and noises keep his attention, keep him active, and he invites me to share in the fun. He chases, watches it bounce, and hides it in the furniture. This has been an enjoyable and entertaining toy and I recommend it.
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Reviewed in the United States on May 2, 2026