China manufacturer Double Enveloping Worm Gearbox Speed Reducer with Hot selling

Product Description


Solution Description

Planar dobule enveloping ring floor worm reducer is a new type of transmission system, which has big bearing
potential, higher transmission performance, compact and realistic composition.This reducer can be widely utilized in a variety
of transmission machinery deceleration travel, this sort of as metallurgy, mining, hoisting, chemical market, construction
rubber ship and other industries and other mechanical equipment, appropriate for the enter shaft speed is not far more than
1500 RPM, the worm shaft can be optimistic, reverse course rotation.

Detailed Photos


Solution Parameters



Our Advantages




Company Profile

Xihu (West Lake) Transmission Gear Co., Ltd. positioned HangZhou city, ZHangZhoug, as 1 skilled maker
and exporter of cycloidal pin wheel reducer,worm reducer, gear reducer, gearbox,AC motor and relative spare
elements, owns rich knowledge in this line for many a long time.

We are 1 immediate manufacturing facility, with advanced generation products, the strong advancement crew and producing
ability to offer you top quality merchandise for customers.

Our items extensively served to various industries of Metallurgy, Chemical compounds, textile,drugs,wooden etc. Major
marketplaces: China, Africa,Australia,Vietnam, Turkey,Japan, Korea, Philippines…

Welcome to request us any inquiries, good offer usually for you for lengthy phrase enterprise.


Q: Are you trading business or maker?
A: We are manufacturing unit.

Q: How long is your shipping time?
A: Normally it is 5-10 times if the merchandise are in inventory. or it is 15-20 times if the items are not in inventory.

Q: Can we acquire 1 personal computer of every merchandise for quality testing?
A: Indeed, we are happy to settle for trial purchase for top quality tests.

Q:How to choose a gearbox which meets your requirement?
A:You can refer to our catalogue to pick the gearbox or we can aid to select when you supply
the technical information of required output torque, output velocity and motor parameter and many others.

Q: What information shall we give just before inserting a acquire buy?
A:a) Sort of the gearbox, ratio, input and output kind, enter flange, mounting placement, and motor informationetc.
b) Housing color.
c) Buy amount.
d) Other specific needs.

How to Determine the Quality of a Worm Shaft

There are a lot of rewards of a worm shaft. It is less difficult to manufacture, as it does not require manual straightening. Among these advantages are relieve of servicing, reduced price, and relieve of set up. In addition, this type of shaft is considerably significantly less susceptible to harm owing to guide straightening. This report will examine the different variables that determine the quality of a worm shaft. It also discusses the Dedendum, Root diameter, and Dress in load capability.
worm shaft

Root diameter

There are numerous alternatives when selecting worm gearing. The variety depends on the transmission employed and production prospects. The standard profile parameters of worm gearing are explained in the expert and organization literature and are employed in geometry calculations. The selected variant is then transferred to the principal calculation. However, you have to just take into account the toughness parameters and the equipment ratios for the calculation to be correct. Below are some suggestions to pick the right worm gearing.
The root diameter of a worm equipment is calculated from the middle of its pitch. Its pitch diameter is a standardized price that is determined from its stress angle at the point of zero gearing correction. The worm gear pitch diameter is calculated by adding the worm’s dimension to the nominal middle distance. When defining the worm gear pitch, you have to maintain in head that the root diameter of the worm shaft need to be smaller than the pitch diameter.
Worm gearing needs teeth to evenly distribute the wear. For this, the tooth facet of the worm have to be convex in the standard and centre-line sections. The shape of the tooth, referred to as the evolvent profile, resembles a helical gear. Normally, the root diameter of a worm equipment is far more than a quarter inch. Nonetheless, a 50 %-inch distinction is suitable.
An additional way to compute the gearing effectiveness of a worm shaft is by hunting at the worm’s sacrificial wheel. A sacrificial wheel is softer than the worm, so most use and tear will occur on the wheel. Oil analysis reports of worm gearing units virtually often present a substantial copper and iron ratio, suggesting that the worm’s gearing is ineffective.


The dedendum of a worm shaft refers to the radial duration of its tooth. The pitch diameter and the small diameter decide the dedendum. In an imperial system, the pitch diameter is referred to as the diametral pitch. Other parameters include the encounter width and fillet radius. Face width describes the width of the gear wheel without having hub projections. Fillet radius measures the radius on the idea of the cutter and forms a trochoidal curve.
The diameter of a hub is measured at its outer diameter, and its projection is the length the hub extends over and above the equipment confront. There are two kinds of addendum tooth, one with brief-addendum tooth and the other with prolonged-addendum enamel. The gears on their own have a keyway (a groove machined into the shaft and bore). A essential is fitted into the keyway, which matches into the shaft.
Worm gears transmit motion from two shafts that are not parallel, and have a line-toothed style. The pitch circle has two or much more arcs, and the worm and sprocket are supported by anti-friction roller bearings. Worm gears have higher friction and dress in on the tooth enamel and restraining surfaces. If you would like to know a lot more about worm gears, just take a search at the definitions underneath.
worm shaft

CZPT’s whirling procedure

Whirling approach is a contemporary production approach that is replacing thread milling and hobbing processes. It has been ready to minimize producing charges and direct occasions even though making precision gear worms. In addition, it has reduced the need for thread grinding and area roughness. It also decreases thread rolling. Here’s more on how CZPT whirling procedure works.
The whirling approach on the worm shaft can be used for producing a variety of screw varieties and worms. They can create screw shafts with outer diameters of up to 2.5 inches. Unlike other whirling procedures, the worm shaft is sacrificial, and the procedure does not call for machining. A vortex tube is employed to deliver chilled compressed air to the cutting position. If essential, oil is also extra to the blend.
Yet another technique for hardening a worm shaft is named induction hardening. The method is a large-frequency electrical process that induces eddy currents in metallic objects. The higher the frequency, the more surface area warmth it generates. With induction heating, you can program the heating process to harden only distinct places of the worm shaft. The duration of the worm shaft is typically shortened.
Worm gears supply numerous rewards more than standard gear sets. If used correctly, they are reliable and very effective. By pursuing proper set up guidelines and lubrication guidelines, worm gears can provide the very same dependable provider as any other kind of gear set. The article by Ray Thibault, a mechanical engineer at the College of Virginia, is an outstanding guidebook to lubrication on worm gears.

Dress in load ability

The dress in load ability of a worm shaft is a crucial parameter when determining the effectiveness of a gearbox. Worms can be manufactured with different equipment ratios, and the design of the worm shaft ought to mirror this. To figure out the wear load ability of a worm, you can check out its geometry. Worms are typically manufactured with teeth ranging from a single to 4 and up to twelve. Deciding on the proper amount of tooth relies upon on many elements, including the optimisation requirements, this kind of as performance, weight, and centre-line distance.
Worm gear tooth forces enhance with enhanced energy density, creating the worm shaft to deflect much more. This decreases its put on load potential, lowers efficiency, and increases NVH conduct. Advancements in lubricants and bronze components, blended with better producing quality, have enabled the constant improve in electricity density. People 3 elements blended will decide the use load capability of your worm equipment. It is critical to contemplate all 3 elements ahead of deciding on the right equipment tooth profile.
The minimal amount of equipment teeth in a gear relies upon on the strain angle at zero gearing correction. The worm diameter d1 is arbitrary and is dependent on a recognized module value, mx or mn. Worms and gears with diverse ratios can be interchanged. An involute helicoid guarantees correct make contact with and condition, and provides increased precision and life. The involute helicoid worm is also a essential part of a gear.
Worm gears are a type of historical gear. A cylindrical worm engages with a toothed wheel to decrease rotational pace. Worm gears are also used as prime movers. If you happen to be hunting for a gearbox, it may possibly be a excellent alternative. If you are taking into consideration a worm equipment, be confident to verify its load potential and lubrication demands.
worm shaft

NVH habits

The NVH actions of a worm shaft is decided using the finite component approach. The simulation parameters are outlined using the finite element technique and experimental worm shafts are in contrast to the simulation benefits. The final results show that a huge deviation exists in between the simulated and experimental values. In addition, the bending stiffness of the worm shaft is highly dependent on the geometry of the worm gear toothings. Therefore, an ample design for a worm equipment toothing can support decrease the NVH (sounds-vibration) habits of the worm shaft.
To estimate the worm shaft’s NVH conduct, the primary axes of second of inertia are the diameter of the worm and the variety of threads. This will affect the angle among the worm teeth and the powerful distance of each tooth. The distance between the primary axes of the worm shaft and the worm gear is the analytical equal bending diameter. The diameter of the worm equipment is referred to as its efficient diameter.
The improved electrical power density of a worm equipment benefits in elevated forces performing on the corresponding worm equipment tooth. This qualified prospects to a corresponding boost in deflection of the worm gear, which negatively has an effect on its effectiveness and dress in load potential. In addition, the growing power density demands improved producing high quality. The constant development in bronze materials and lubricants has also facilitated the ongoing enhance in electrical power density.
The toothing of the worm gears decides the worm shaft deflection. The bending stiffness of the worm equipment toothing is also calculated by using a tooth-dependent bending stiffness. The deflection is then converted into a stiffness price by utilizing the stiffness of the specific sections of the worm shaft. As demonstrated in determine 5, a transverse part of a two-threaded worm is proven in the figure.

China manufacturer Double Enveloping Worm Gearbox Speed Reducer     with Hot sellingChina manufacturer Double Enveloping Worm Gearbox Speed Reducer     with Hot selling