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Speed Reducer & Gearboxes

 Speed reducer & gearbox manufacturer

Hangzhou ever-power transmission Co., ltd. is based in Hangzhou and serves customers. Since its establishment, the company has been committed to developing and producing high-efficiency transmission series products. We have always adhered to the entrepreneurial concept of “customer-centered, quality-oriented, innovation and development-oriented” and “serving the public, benefiting and expanding.” Gradually expand the market and export to Southeast Asia, Europe, America, and other overseas markets, and have a high reputation in the field of power transmission.

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The company mainly produces four R/S/K/F gear reducers, RV series worm gear reducers, helical gearboxes, cycloidal gearboxes, planetary reducers, and precision planetary reducers. They can be matched with ordinary y (Y2) motors, explosion-proof B (Yb) motors, DC Z motors, brake e (YEJ) motors, variable frequency v (YVP) motors, variable frequency brake ve motors, track g motors, and various servo motors for non-standard connection.
The company adopts the modular combination design scheme and establishes a digital parameter management system, making the products more applicable and stable. Single or combined products can meet the different needs of customers. The products are widely used in metallurgy, mining, building materials, shipbuilding, petrochemical, aerospace, food, medical, packaging, transportation, textile, paper making, general machinery, and other fields. The company’s products are sold worldwide and exported to Southeast Asia, Europe, America, and other countries and regions. Provide stable and economical options for your drive application so that your production is smoother and your performance is more brilliant!

 ▍Worm gearboxes

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RV series

WP Series

SWL series

VF series

 ▍Helical gearboxes

Speed Reducer & Gearboxes
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Speed Reducer & Gearboxes BKM
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R/F/K/S series

HB series

BKM series

RC series

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SMR series

TA series

 ▍Cycloidal gearboxes

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BL/XL flange vertical installed double shaft type

BW/XW baseboard horizontal installed double shaft type 

BLD/XLD flange vertical installed motor direct-connection type

BWD/XWD baseboard horizontal installed motor direct-connection type

 ▍Planetary gearboxes

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High precision planetary gearboxes

Planetary gearbox for feed mixer

Travel drives/Winch drives

Slew drives

Inline gear reducer

 ▍Other gearboxes


WJ Series Worm-gear Speed Reducer


NMRV-NRV Worm Gear Speed Reduction Unit

025, 030,040,050,063,075,090,110,130

Combination Worm Gear Units

NMRV/NMRV 030+040, 030+050, 030+063, 040+075, 040+090, 050+110, 063+130


TXF Series Planet Cone-disk Stepless Speed Variator

TXF005/071, TXF010/80

UD Series Plant Cone-disk Stepless Speed Variator

UD0.18,UD0.25, UD0.37,UD0.55,UD0.75, UD1.1,UD1.5,UD2.2,UD3,UD4,UD5,UD7.5


Single speed worm gear reducer (RATIO 1/10-1/60)


Doulbe speed worm gear reducer (RATIO 1/100-1/3600)


Universal speed reducer ( RATIO 1/10-1/60)


 How to Select a Gearbox?

The most commonly used information includes:

  1. Input speed and horsepower
  2. Required output speed or required output torque (which will determine the transmission ratio)
  3. Use characteristics; Hours per day, nature of shock or vibration in the system
  4. Suspension load degree
  5. Device configuration, shaft input or hollow hole input, shaft output or hollow hole output
  6. Unit direction, for example, for fitting angle worm gear, above or below worm, shaft horizontal or vertical.
  7. Unique materials; Corrosion resistant coating, stainless steel housing, and shaft

● Service coefficient
The starting point of most gearbox manufacturers is to define the service factor. This tool adjusts the type of input, the number of hours of use per day, and any shock or vibration problems that may exist in the application. Applications with irregular impacts, such as grinding applications, will require higher service factors than applications with uniform loading. Similarly, a device used intermittently will have a lower coefficient than a device used 24 hours a day.
● Service level
Once this factor is determined, it defines a service category. A device driven by an ordinary AC motor drives a constant speed conveyor with uniform loading for 20 hours a day, and its service level is usually level 2.

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● install
At this point, the unit size and capacity have been defined, so the next step is to determine the installation characteristics of the unit. Although there are some standard mounting configurations, gearbox manufacturers offer a wide range of options for each unit size. Flange input with hollow hole, used for C-frame motor, combined with the protruding output shaft on the left, may be the most common installation method, but there are many other options. Options such as mounting feet above or below the gearbox body, hollow outputs, and input and output configurations are possible. All gearbox manufacturers list their installation options and dimensional information in their catalogs and websites.

● Overhang load
Once the unit size is selected, the gearbox manufacturer’s catalog or website will provide the maximum allowable overhang load value for the specific unit. If the load in the application is higher than the allowable value, it may be necessary to increase the gearbox size to consider the overhung load.

● Lubricants, seals, and motors
Once the unit size and configuration are completed, there are still some steps to be solved. Most manufacturers offer an option to ship the gearbox filled with lubricating oil (for most manufacturers, it is empty by default and let the customer fill it on site). Some manufacturers recommend using a second set of seals for vertical axis-down applications. Finally, since many gearboxes are eventually installed on C-frame motors, many manufacturers will also provide services to integrate motors into gearboxes and ship components as a single unit.

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Gearbox and reducer application scenarios

Speed Reducer & Gearboxes paper wood handling

Gearbox for Wood Handling

Decades of experience in the design and manufacture of mechanical power transmission technology for fibre, paper and tissue applications ensures we are a reliable supplier of Gearbox for wood handling applications.

Gearbox for Chemical & Mechanical Pulping

Gearbox for Chemical pulping is used for materials that need to be strong or combined with mechanical pulp to give additional product characteristics. Cooking, washing, bleaching and filter drives are key to this process and we supply robust gear systems for these very applications.
Speed Reducer & Gearboxes chemical and mechanical pulping
Speed Reducer & Gearboxes kiln low res

Gearbox for Chemical Recovery

Gearbox for Characterised by operational reliability and high efficiency, HZPT drive solutions offer maximum performance throughout your chemical processing equipment’s entire lifecycle.

Gearbox for Stock Preparation

We deliver a complete range of mechanical drive solutions for each stock preparation phase. To ensure optimum performance, our gear boxes are tailored to our customers’ specific applications for maximum results and process availability.

Speed Reducer & Gearboxes stock preparation
Speed Reducer & Gearboxes recycling

Gearbox for Recycling

Our fibre recycling gearboxes are tailored to each application’s specific requirements and duty cycle. Engineered to deliver optimum performance, our drum pulper drives can be supplied as a single optimised solution, or as individual components.

Gearbox for Paper Making

Running at super high speeds, paper and board machines demand near constant gear unit operation and require a high degree of reliability.

Speed Reducer & Gearboxes finishing
Speed Reducer & Gearboxes panelboard production

Gearbox for Panel board Production

HZPT engineers high performance gear systems for continuous press, calendar and dryer applications used in the production of panelboard.

Gearbox for Tissue Production

Tissue machines are typically demanding applications and HZPT is proud to be the market leading manufacturer of gearboxes for Yankee Cylinders.

Speed Reducer & Gearboxes tissue production

Gearbox for Finishing

Calling on almost three centuries of industrial gear engineering expertise, HZPT designs, develops and manufactures winder and unwinder drive systems for finishing applications.

Speed Reducer Gearbox – Speed Reducer Price, Features and Specs

Speed reducer gearbox is a part of speed reducers. Now, the question arises here what a speed reducer is. Actually, these are usual items of machinery. A reducer is an innovative gear train especially between the machinery and the motor. It helps in reducing the speed of a machine. 

Are you looking for a speed reducer gearbox for sale? If so, then there are various manufacturers that can be of great help. But before making a deal, you first need to know the features, specs and price of speed reducer. 

Explore Specifications and Features

When it comes to choosing a machine, you would always like to choose the best out of the best options. The same situation can also be observed when it comes to choosing a reducer. Thus, you need to take features and specifications of the same into consideration. The way to evaluate features of a machine or device is to go through reviews. 

Yes, by going through reviews, you could easily know the pros and cons of a device. When you are aware about the positive and negative aspects of a product, you can certainly make the right choice. So, if you don’t want to repent on your decision, you need to keep this point in mind. By going through a few reviews about speed reducer gearbox exporters, you can easily know about a right option. 

Price Vs Quality 

However, it’s true that you should always take speed reducer price into consideration, but it doesn’t mean that you should ignore the quality of the product. Yes, quality is something that decides the final durability and functionality of a device. So, you should avoid going with a cheap priced product in order to save just a few bucks. Instead, you need to take the quality of the machine into consideration. 

There are various top speed reducer & gearbox manufacturers that can help you choose the products with the best price tag. So, when it comes to determining the best product, you need to take two points into consideration price and quality. Go with the best quality of products that can easily fit within your budget.

Best Manufacturer Can Help You Choosing a Right Gearbox 

If you want to choose the best gearbox, you first need to choose the best speed reducer gearbox manufacturer. Now, the question arises here: how to know about the best manufacturer? For this, you need to explore the power of the internet. By thoroughly researching online, you can be able to create a list of top manufacturers online. When you have a list of best manufacturers online, you need to go through their product range and offerings to make a final buying decision.

If you are still confused about how to choose the best manufacturer, you need to look at nowhere else but Torquetrans.com. It is the best place online that can help you explore a range of products to choose from. 

If you want to know more about reducing gearboxes, you need to get in touch with us. For this, you need to visit at our contact us page.


Helical shaft mount gearboxes
Helical Shaft Mount Reducers & Gearmotors
hollow shafts
In-Line Helical Reducer
PV Series planetary gearboxes
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Speed reducers, also called gearboxes and gearheads, as well as gear reducers etc., consist of a set of gears, shafts, and bearings that are factory mounted in an enclosed lubricated housing. Speed reducers are available in a broad range of sizes, capacities and speed ratios. Their job is to convert the input provided by a prime mover (usually an electric motor) into an output of lower RPM and correspondingly higher torque.

Important performance specifications to consider when searching for gearboxes and gearheads include gear ratio, output torque, maximum input power, and maximum input speed. Ratios are generally specified at X: 1, where X is an integer. Therefore a ratio of 5:1 is specified as 5. A 5:1 ratio means that a motor input of 1750 RPM is converted to 350 RPM. A reducer’s input HP rating represents the maximum prime mover size the reducer is designed to handle. Exceeding the maximum input speed can result in oil “churning”, which is detrimental to the life of the speed reducer.

Gearing arrangements for gearboxes and gearheads include spur, helical, planetary, harmonic, worm, bevel, and cycloidal. Spur gears are gears with teeth that are straight and parallel to the axis of rotation. They are good for parallel shafts. Helical gears are gears with teeth that spiral around the gear. They are similar to spur gears but with greater time of contact and quieter. Planetary gears get their name from a resemblance to a solar system. Planetary reducers can be designed with gear sets or a set of planetary cones. In planetary gear reducers, planet gears revolve around a sun gear. The input shaft rotates the sun gear. Each of the planet gears simultaneously applies a torque to the rotating planet member that then applies a torque to the output shaft (back side). Planetary cone reducers operate on a similar principle, utilizing an input disc, control ring, and planetary cone power train instead of a gear set. Harmonic gears utilize a nested gear within a circular spline, the inside one being flexible and containing two fewer teeth. Each turn of the inside moves the flexible gear anti-clockwise on the Circular Spline. A worm gear is a threaded input shaft meshed with a worm gear that is mounted to the output shaft. These are usually used for right angles. Bevel gears are gears that shafts lie perpendicular to each other, therefore utilized mainly in right-angle applications. Miter gears are bevel gears with a 1:1 ratio. They are not used for speed reduction. Cycloid reducers use rolling elements (such as a cam follower) and a multilobe cam to transmit torque and provide speed reduction. Cycloidal reducers can provide high reduction ratios with low backlash, high accuracy, and high stiffness. The load-sharing feature of cycloidal reducers also allows it to withstand high shock loads.

A speed reducer is termed a gearhead if it is entirely and directly mounted onto a motor, not just the shaft. Therefore, other speed reducers (gearboxes) are typically coupled with the shaft and then base-mounted. The coupling of the shaft from the prime mover to the input shaft of the speed reducer can be accomplished in a few different ways. If the two shafts are coupled shaft-to-shaft directly, a coupling is required. If they are not coupled shaft-to-shaft, the speed reducer generally has a “quill-style” or hollow shaft for the prime mover shaft to mount into. The coupling is accomplished with a clamping pinion gear or adapter plate. Specific NEMA face adapters (coupling type) are also manufactured to eliminate sizing concerns between motor and gearbox.

Input and output configurations for gearboxes and gearheads include hollow shaft, hollow shaft, or coupling or bushing. A single input shaft can drive multiple output shafts. The output shafts are usually parallel and in-line. However, some unique configurations exist that allow for offset shafts to be driven at different speeds. Some gearboxes and gearheads can be supplied with a reaction arm. A reaction arm prevents the reducer housing from rotating when there is no base mounts or flanges. Shaft alignment can be parallel in-line, parallel offset, right angle, and non-perpendicular angled shafts. Shafts can be aligned vertically as well. In order for a shaft to be orientated in a vertical position, considerations need to be made regarding lubrication.

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