China Best Sales NEMA 17 (42mm) Hb Step Hybrid Planetary Gearbox Geared Stepper Motor motor engine

Product Description

NEMA 17 (42mm) HB Step Hybrid Planetary Gearbox Geared Stepper Motor

• Manufacturer Part Number: HP421     
• Motor Type: Planetary Gearbox Stepper Motor Bipolar 4 Wires 2 Phase 
• Frame Size: 42x42mm Geared Stepper Motor Nema 17 Mounting 
• Step Angle: 1.8deg 
• Gearbox Effiency: 66%—90% 
• Application: Medical Equipment Motor

HP421-1 42MM
Stepper Angel: 1.8deg

Drawing of NEMA 17 Hybrid Stepper Gear Motor:


Motor Electrical Specification
Series Model Step Angle ( o ) L
Rated Current (A) Phase
Inductance  (mH)
Holding Torque
Detent Torque ( Lead
( g)
HP421-01206 1.8 28 0.6 8 10 12 1.6 4 150
HP421-57117 1.8 34 1.7 1.2 1.8 28 1.6 4 220
HP421-04013 1.8 40 1.3 2.5 5.0 40 2.2 4 280
Other Motor Electrical Specification please refer to Hybrid Stepper Motor web


Gearbox Specification
Ratio 3.71 5.18 14 19 27 51 71 100 139 189 264 369
Reducer Series 1 2 3 4
31.0 40.1 49.0 57.9
Allowable Torque
12 20 32 40
Instantaneous Torque
36 60 96 120
90% 81% 73% 66%
60 85 95 110
We can manufacture products according to customer’s requirements

Factory Ability
I.CH is a professional motion control Enterprise, which established in 2006, we have more than 10 years experiences in the motion control area.
Our main products are hybrid stepper motor, stepping motor driver,  integrated step servo motors, DC Gear Motor, Brushless DC Motors and so on. Our products are widely used and applied in the following industries: semiconductor, textile, laser, woodworking, printing, advertising, clothing, marble and ceramic, robotics and military.
Our customers come from all around the world: European, America, Canada, Middle East, Asia and so on!



Round Stepper Motor                                Stepper Motor with Encoder                      Stepper Motor with Thread Shaft

1. Reliable supplier, direct manufacture 8 years;
2. CE, ROHS, IS09001… Certificate report;
3. OEM&OED Service, after-sales service 24*7, technical support;
4. Refunds or replacement in case of damaged by transportation;
5. 0.1% defect rate and 1 – 2 year guarantee period.

-We choose best safe and strong packing method for your goods, or pack by your conditions;
-Shipping by Vessel, air or international express;
-Lead time is around 3 to 8 weeks.

Q:How can I get your quotation of electrical step engine?
A:Please send us the details of the stepper motors you are in need of, also includes the quantity. 

Q:How do you deliver the stepping motors to us?
A:We usually choose DHL for our customers because it is safe and fast. If you have requirement about the shipping method, you can tell us. We also can ship by TNT, UPS, EMS, and etc.

Q:What kind of payment method you accept?
A:Our company support payment by TT, Paypal, or others, you can choose which 1 you prefer to.

Q:If I place an order, how long will you ship out the hybrid step motors?
A:It usually takes about only 2-3 days on receipting of payment, depends on the quantity ordered and the stock status.
Q:What application for NEMA 11?
A:It can be used as CCTV motor or robot motor.

Q:What about phase and lead wires?
A:2 phase or 4 phase, 4 lead wires

Q:What can step angel be?
A:1.8 Degree or 0.9deg, it is up to your choice.

Speed: Low Speed
Number of Stator: Two-Phase
Excitation Mode: HB-Hybrid
Function: Control, Driving
Operate Mode: Hb-Stepper Motor
Certification: ISO9001, CCC
US$ 1/Piece
1 Piece(Min.Order)

Request Sample


Benefits of a Planetary Motor

A planetary motor has many benefits. Its compact design and low noise makes it a good choice for any application. Among its many uses, planetary gear motors are found in smart cars, consumer electronics, intelligent robots, communication equipment, and medical technology. They can even be found in smart homes! Read on to discover the benefits of a planetary gear motor. You’ll be amazed at how versatile and useful it is!

Self-centering planet gears ensure a symmetrical force distribution

A planetary motor is a machine with multiple, interlocking planetary gears. The output torque is inversely proportional to the diameters of the planets, and the transmission size has no bearing on the output torque. A torsional stress analysis of the retaining structure for this type of motor found a maximum shear stress of 64 MPa, which is equivalent to a safety factor of 3.1 for 6061 aluminum. Self-centering planet gears are designed to ensure a symmetrical force distribution throughout the transmission system, with the weakest component being the pinions.
A planetary gearbox consists of ring and sun gears. The pitch diameters of ring and planet gears are nearly equal. The number of teeth on these gears determines the average gear-ratio per output revolution. This error is related to the manufacturing precision of the gears. The effect of this error is a noise or vibration characteristic of the planetary gearbox.
Another design for a planetary gearbox is a traction-based variant. This design eliminates the need for timing marks and other restrictive assembly conditions. The design of the ring gear is similar to that of a pencil sharpener mechanism. The ring gear is stationary while planet gears extend into cylindrical cutters. When placed on the sun’s axis, the pencil sharpening mechanism revolves around the ring gear to sharpen the pencil.
The JDS eliminates the need for conventional planetary carriers and is mated with the self-centering planet gears by dual-function components. The dual-function components synchronize the rolling motion and traction of the gears. They also eliminate the need for a carrier and reduce the force distribution between the rotor and stator.

Metal gears

A planetary motor is a type of electric drive that uses a series of metal gears. These gears share a load attached to the output shaft to generate torque. The planetary motor is often CNC controlled, with extra-long shafts, which allow it to fit into very compact designs. These gears are available in sizes from seven millimeters to 12 millimeters. They can also be fitted with encoders.
Planetary gearing is widely used in various industrial applications, including automobile transmissions, off-road transmissions, and wheel drive motors. They are also used in bicycles to power the shift mechanism. Another use for planetary gearing is as a powertrain between an internal combustion engine and an electric motor. They are also used in forestry applications, such as debarking equipment and sawing. They can be used in other industries as well, such as pulp washers and asphalt mixers.
Planetary gear sets are composed of three types of gears: a sun gear, planet gears, and an outer ring. The sun gear transfers torque to the planet gears, and the planet gears mesh with the outer ring gear. Planet carriers are designed to deliver high-torque output at low speeds. These gears are mounted on carriers that are moved around the ring gear. The planet gears mesh with the ring gears, and the sun gear is mounted on a moveable carrier.
Plastic planetary gear motors are less expensive to produce than their metal counterparts. However, plastic gears suffer from reduced strength, rigidity, and load capacity. Metal gears are generally easier to manufacture and have less backlash. Plastic planetary gear motor bodies are also lighter and less noisy. Some of the largest plastic planetary gear motors are made in collaboration with leading suppliers. When buying a plastic planetary gear motor, be sure to consider what materials it is made of.


The Mega Torque Planetary Encoder DC Geared Motor is designed with a Japanese Mabuchi motor RS-775WC, a 200 RPM base motor. It is capable of achieving stall torque at low speeds, which is impossible to achieve with a simple DC motor. The planetary encoder provides five pulses per revolution, making it perfect for applications requiring precise torque or position. This motor requires an 8mm hex coupling for proper use.
This encoder has a high resolution and is suitable for ZGX38REE, ZGX45RGG and ZGX50RHH. It features a magnetic disc and poles and an optical disc to feed back signals. It can count paulses as the motor passes through a hall on the circuit board. Depending on the gearbox ratio, the encoder can provide up to two million transitions per rotation.
The planetary gear motor uses a planetary gear system to distribute torque in synchrony. This minimizes the risk of gear failure and increases the overall output capacity of the device. On the other hand, a spur gear motor is a simpler design and cheaper to produce. The spur gear motor works better for lower torque applications as each gear bears all the load. As such, the torque capacity of the spur gear motor is lower than that of a planetary gear motor.
The REV UltraPlanetary gearbox is designed for FTC and has three different output shaft options. The output shaft is made of 3/8-inch hex, allowing for flexible shaft replacement. These motors are a great value as they can be used to meet a wide range of power requirements. The REV UltraPlanetary gearbox and motor are available for very reasonable prices and a female 5mm hex output shaft can be used.


One of the most common questions when selecting a planetary motor is “How durable is it?” This is a question that’s often asked by people. The good news is that planetary motors are extremely durable and can last for a long time if properly maintained. For more information, read on! This article will cover the durability and efficiency of planetary gearmotors and how you can choose the best one for your needs.
First and foremost, planetary gear sets are made from metal materials. This increases their lifespan. The planetary gear set is typically made of metals such as nickel-steel and steel. Some planetary gear motors use plastic. Steel-cut gears are the most durable and suitable for applications that require more torque. Nickel-steel gears are less durable, but are better able to hold lubricant.
Durability of planetary motor gearbox is important for applications requiring high torque versus speed. VEX VersaPlanetary gearboxes are designed for FRC(r) use and are incredibly durable. They are expensive, but they are highly customizable. The planetary gearbox can be removed for maintenance and replacement if necessary. Parts for the gearbox can be purchased separately. VEX VersaPlanetary gearboxes also feature a pinion clamped onto the motor shaft.
Dynamic modeling of the planetary gear transmission system is important for understanding its durability. In previous studies, uncoupled and coupled meshing models were used to investigate the effect of various design parameters on the vibration characteristics of the planetary gear system. This analysis requires considering the role of the mesh stiffness, structure stiffness, and moment of inertia. Moreover, dynamic models for planetary gear transmission require modeling the influence of multiple parameters, such as mesh stiffness and shaft location.


The planetary gear motor has multiple contact points that help the rotor rotate at different speeds and torques. This design is often used in stirrers and large vats of liquid. This type of motor has a low initial cost and is more commonly found in low-torque applications. A planetary gear motor has multiple contact points and is more effective for applications requiring high torque. Gear motors are often found in stirring mechanisms and conveyor belts.
A planetary gearmotor is typically made from four mechanically linked rotors. They can be used for various applications, including automotive and laboratory automation. The plastic input stage gears reduce noise at higher speeds. Steel gears can be used for high torques and a modified lubricant is often added to reduce weight and mass moment of inertia. Its low-cost design makes it an excellent choice for robots and other applications.
There are many different types of planetary gear motors available. A planetary gear motor has three gears, the sun gear and planet gears, with each sharing equal amounts of work. They are ideal for applications requiring high torque and low-resistance operation, but they require more parts than their single-stage counterparts. The steel cut gears are the most durable, and are often used in applications that require high speeds. The nickel-steel gears are more absorptive, which makes them better for holding lubricant.
A planetary gear motor is a high-performance electrical vehicle motor. A typical planetary gear motor has a 3000 rpm speed, a peak torque of 0.32 Nm, and is available in 24V, 36V, and 48V power supply. It is also quiet and efficient, requiring little maintenance and offering greater torque to a modern electric car. If you are thinking of buying a planetary gear motor, be sure to do a bit of research before purchasing one.

China Best Sales NEMA 17 (42mm) Hb Step Hybrid Planetary Gearbox Geared Stepper Motor   motor engine	China Best Sales NEMA 17 (42mm) Hb Step Hybrid Planetary Gearbox Geared Stepper Motor   motor engine
editor by CX 2023-05-26