XW BW Series Cycloidal Gearbox Cyclo Pin Wheel Reducer Single Stage Horizontal Foot-Mounting

Overview of XB Cycloidal Gearbox

The cycloidal pin gear reducer is a transmission model based on the principle of cycloidal pin gear meshing planetary transmission. It is an ideal transmission device with many advantages, wide use, and positive and negative operation

XW BW Series Cycloidal Gearbox Characteristic

1. High-speed ratio, large torque, high efficiency, averaging 95%
2. Compact structure and small volume
3. Stable operation and low noise
4. Few failures and long service life.

Structure and principle

Cycloidal pin gear reducer is a planetary transmission principle using cycloidal gear meshing. A 180 ° eccentric sleeve is installed on the input shaft, and two roller bearings are installed on the eccentric sleeve to form the H mechanism. The center holes of the two cycloidal gears form the raceway of the eccentric bearing. The cycloidal gear is meshed with a group of needle teeth on the needle gear to form an internal meshing reducer with a tooth difference.

XW BW Series Cycloidal Cyclo Pin Wheel Gearbox Dimension

XW Series Cycloidal Gearbox

BW Series Cycloidal Gearbox

Our Cycloidal Reducer Feature

	Reducer body The body is made of thickened material, and the reducer surface is more clean, smooth and durable through professional polishing technology.
	Output shaft of reducer High hardness shaft, multiple precision machining, smooth and flat appearance, not easy to damage the seal ring, easy to install, and ensure the smooth operation of the reducer.
	New accessories The reducer uses brand new accessories, high-quality materials, high hardness and stable performance.
	Reduce noise Low noise, large overload capacity and strong shock resistance.
	Filler hole B0/X2 and B1/X3 have been greased, B2/X4 and above models have not been added, please add oil before use.
	Copper coil The reducer can be matched with the national standard/directly connected motor. The motor adopts a new copper core coil to make the motor more stable, efficient and safe.

How to Select Cycloidal Reducer(XW BW Series Cycloidal Gearbox)

There are many factors to consider when choosing a cycloidal reducer that suits you. Today, we will pick out some of the more important factors to share with you.
In addition to the technical requirements for selecting the reducer, what other requirements are there? Some of the more common methods are discussed below.

Ambient temperature

1. An important but sometimes overlooked factor is temperature. For example, the motor rating is based on a certain ambient temperature, usually 40 ° C. If the application is continuous operation with high ambient temperature, motors with rated torque higher than the calculated value may be required.

Duty cycle

1. For the motor and cycloidal reducer, the duty cycle will affect the temperature rise of the motor and affect the gear wear rate. If the application has intermittent duty cycles, motors with rated torque lower than the calculated value may be used. However, frequent starting and stopping will reduce the expected life of the gear. This is also related to the service factors published by gear manufacturers in their catalogues.

Overall dimensions

The shape factor is another parameter that affects the operation. For example, when using a DC motor speed controller, the shape coefficient of the controller’s output DC voltage will affect the motor size and transmission ratio, and whether cycloidal reducer is required. One factor in increasing motor temperature is unfiltered control. This means that a larger motor than calculated may be required, especially if the duty cycle is continuous. The speed of the motor will also slow down, because this control has a lower output voltage than the filter control. This is why it is so important to use the correct motor speed when calculating the transmission ratio.

Radial and axial loads

The load also affects the motor bearings. In particular, motors have different types and sizes of bearings, and each bearing has different radial and axial load capacities. Also, depending on the load capacity, a larger motor than calculated may be required. For example, applications with high radial loads, such as pinch rolls and belt drives, may require larger motors. However, high axial loads, such as lead screws, may also be applied, and larger motors may be required. In this sense, bigger means a stronger motor, not necessarily more output power.

How does a Cycloidal Gearbox Work?

A unique principle of cycloidal gears is that the outer circle used to form the top tooth surface (epicycloid) of one gear is used as the inner circle used to form the root tooth surface (hypocycloid) of another gear. This ensures a constant angular velocity and supports the basic law of gear transmission. That is, the angular velocity ratio of a gear must remain constant throughout gear engagement.
Cycloidal gear box uses the principle of cycloidal gear to provide high transmission ratio (usually 100:1 or higher), with excellent torsional stiffness, good impact load capacity, stable backlash and low wear within the service life of the gear box.
Cycloidal gear box has many designs, but its basic principle is composed of an input shaft eccentrically mounted on a driving member or bearing, which drives the cycloidal disk with eccentric motion. When the disc rotates, the convex angle of the cycloidal disc is like a tooth, which meshes with the pin on the fixed gear ring. The cycloidal disc also has roller pins projecting through the disc. Which are connected to the output disc, which transmits motion to the output shaft.
The number of convex angles (teeth) on the cycloidal disk is lower than the number of pins (teeth) on the ring gear, so as to achieve deceleration and torque multiplication. To prevent the output shaft from “swinging”, the roller pin connected to the output plate is installed in a hole slightly larger than the pin diameter. A single cycloidal disc bears the unbalanced force, which can be compensated by using a second cycloidal disc (offset by 180 degrees from the first cycloidal disc).
Cycloidal gear is more difficult to manufacture than involute gear, which requires extremely accurate manufacturing and assembly. But they do provide significant benefits in some applications. First, they can provide transmission ratios up to 300:1 in relatively small packages. Especially in terms of gearbox length, because they do not need to “stack” gear stages like planetary designs.
Because of its rolling contact and lower Hertz contact stress, the friction and wear of cycloidal gears on the tooth surface are also lower. Its good torsional stiffness and the ability to withstand impact load make it an ideal choice for heavy industrial applications requiring servo accuracy and stiffness.