China supplier Planar Double Enveloping Worm Gear Unit with Hollow Shaft with high quality

Merchandise Description


Product Description

Planar dobule enveloping ring floor worm reducer is a new sort of transmission unit, which has large bearing
capacity, large transmission efficiency, compact and realistic structure.This reducer can be commonly used in a range
of transmission equipment deceleration generate, these kinds of as metallurgy, mining, hoisting, chemical sector, design
rubber ship and other industries and other mechanical equipment, suitable for the input shaft speed is not more than
1500 RPM, the worm shaft can be optimistic, reverse route rotation.

Detailed Pictures


Item Parameters



Our Benefits




Organization Profile

Xihu (West Lake) Transmission Gear Co., Ltd. situated HangZhou metropolis, ZHangZhoug, as 1 skilled producer
and exporter of cycloidal pin wheel reducer,worm reducer, equipment reducer, gearbox,AC motor and relative spare
components, owns rich expertise in this line for numerous several years.

We are 1 direct manufacturing facility, with advanced creation gear, the powerful advancement group and producing
ability to supply high quality products for buyers.

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

Welcome to question us any concerns, excellent offer often for you for prolonged time period company.


Q: Are you investing business or company?
A: We are manufacturing facility.

Q: How extended is your delivery time?
A: Usually it is 5-10 days if the merchandise are in stock. or it is 15-20 times if the items are not in inventory.

Q: Can we get 1 personal computer of every single item for high quality tests?
A: Yes, we are glad to settle for trial buy for good quality screening.

Q:How to choose a gearbox which fulfills your necessity?
A:You can refer to our catalogue to choose the gearbox or we can aid to decide on when you provide
the technological details of essential output torque, output speed and motor parameter and so on.

Q: What details shall we give prior to placing a buy purchase?
A:a) Variety of the gearbox, ratio, input and output sort, enter flange, mounting position, and motor informationetc.
b) Housing color.
c) Obtain quantity.
d) Other unique demands.

Worm Shafts and Gearboxes

If you have a gearbox, you may be wondering what the greatest Worm Shaft is for your application. There are many issues to think about, including the Concave shape, Variety of threads, and Lubrication. This report will make clear each and every element and aid you decide on the proper Worm Shaft for your gearbox. There are several choices obtainable on the market place, so do not hesitate to shop about. If you are new to the entire world of gearboxes, read on to find out a lot more about this common type of gearbox.
worm shaft

Concave condition

The geometry of a worm equipment differs substantially depending on its manufacturer and its supposed use. Early worms experienced a basic profile that resembled a screw thread and could be chased on a lathe. Afterwards, resources with a straight sided g-angle ended up designed to make threads that had been parallel to the worm’s axis. Grinding was also created to increase the finish of worm threads and reduce distortions that arise with hardening.
To choose a worm with the appropriate geometry, the diameter of the worm equipment must be in the very same device as the worm’s shaft. When the fundamental profile of the worm gear is decided, the worm gear enamel can be specified. The calculation also involves an angle for the worm shaft to prevent it from overheating. The angle of the worm shaft should be as near to the vertical axis as attainable.
Double-enveloping worm gears, on the other hand, do not have a throat about the worm. They are helical gears with a straight worm shaft. Given that the teeth of the worm are in contact with each other, they generate significant friction. Unlike double-enveloping worm gears, non-throated worm gears are much more compact and can deal with more compact masses. They are also effortless to manufacture.
The worm gears of diverse manufacturers supply numerous positive aspects. For occasion, worm gears are one of the most productive approaches to boost torque, while reduce-good quality supplies like bronze are hard to lubricate. Worm gears also have a reduced failure price simply because they allow for considerable leeway in the layout method. Regardless of the variations in between the two requirements, the overall efficiency of a worm gear technique is the very same.
The cone-formed worm is one more type. This is a technological scheme that brings together a straight worm shaft with a concave arc. The concave arc is also a beneficial utility model. Worms with this shape have far more than three contacts at the same time, which indicates they can reduce a huge diameter without too much use. It is also a fairly reduced-value design.
worm shaft

Thread pattern

A very good worm equipment needs a perfect thread pattern. There are a handful of essential parameters that decide how good a thread sample is. Firstly, the threading sample have to be ACME-threaded. If this is not feasible, the thread have to be manufactured with straight sides. Then, the linear pitch of the “worm” should be the exact same as the round pitch of the corresponding worm wheel. In simple phrases, this indicates the pitch of the “worm” is the same as the circular pitch of the worm wheel. A swift-change gearbox is typically used with this kind of worm equipment. Alternatively, direct-screw modify gears are utilized alternatively of a fast-alter equipment box. The pitch of a worm equipment equals the helix angle of a screw.
A worm gear’s axial pitch must match the round pitch of a equipment with a higher axial pitch. The round pitch is the length between the points of teeth on the worm, while the axial pitch is the length between the worm’s teeth. One more issue is the worm’s guide angle. The angle amongst the pitch cylinder and worm shaft is known as its direct angle, and the larger the guide angle, the increased the efficiency of a gear.
Worm gear tooth geometry may differ depending on the manufacturer and supposed use. In early worms, threading resembled the thread on a screw, and was very easily chased utilizing a lathe. Later, grinding improved worm thread finishes and minimized distortions from hardening. As a outcome, these days, most worm gears have a thread sample corresponding to their size. When deciding on a worm equipment, make certain to verify for the number of threads just before getting it.
A worm gear’s threading is essential in its operation. Worm tooth are typically cylindrical, and are organized in a sample related to screw or nut threads. Worm tooth are usually formed on an axis of perpendicular compared to their parallel counterparts. Because of this, they have greater torque than their spur gear counterparts. Furthermore, the gearing has a reduced output speed and substantial torque.

Amount of threads

Different sorts of worm gears use various numbers of threads on their planetary gears. A one threaded worm equipment need to not be utilised with a double-threaded worm. A single-threaded worm gear must be used with a solitary-threaded worm. Solitary-threaded worms are more powerful for pace reduction than double-threaded kinds.
The amount of threads on a worm’s shaft is a ratio that compares the pitch diameter and amount of enamel. In basic, worms have 1,2,4 threads, but some have three, five, or 6. Counting thread commences can support you establish the amount of threads on a worm. A one-threaded worm has less threads than a numerous-threaded worm, but a multi-threaded worm will have more threads than a mono-threaded planetary equipment.
To evaluate the number of threads on a worm shaft, a small fixture with two floor faces is employed. The worm should be taken off from its housing so that the finished thread spot can be inspected. Following figuring out the number of threads, simple measurements of the worm’s outside diameter and thread depth are taken. When the worm has been accounted for, a forged of the tooth place is made making use of epoxy content. The casting is moulded in between the two tooth flanks. The V-block fixture rests against the outside diameter of the worm.
The round pitch of a worm and its axial pitch have to match the round pitch of a greater gear. The axial pitch of a worm is the distance amongst the points of the enamel on a worm’s pitch diameter. The guide of a thread is the length a thread travels in one revolution. The lead angle is the tangent to the helix of a thread on a cylinder.
The worm gear’s velocity transmission ratio is dependent on the quantity of threads. A worm gear with a high ratio can be very easily decreased in 1 step by using a established of worm gears. However, a multi-thread worm will have far more than two threads. The worm equipment is also far more productive than one-threaded gears. And a worm gear with a higher ratio will enable the motor to be used in a assortment of apps.
worm shaft


The lubrication of a worm equipment is notably difficult, due to its friction and high sliding contact pressure. The good news is, there are many possibilities for lubricants, this sort of as compounded oils. Compounded oils are mineral-primarily based lubricants formulated with ten percent or far more fatty acid, rust and oxidation inhibitors, and other additives. This combination outcomes in enhanced lubricity, reduced friction, and reduce sliding dress in.
When deciding on a lubricant for a worm shaft, make certain the product’s viscosity is appropriate for the sort of gearing employed. A reduced viscosity will make the gearbox challenging to actuate and rotate. Worm gears also undergo a increased sliding motion than rolling motion, so grease should be able to migrate evenly all through the gearbox. Recurring sliding motions will drive the grease away from the contact zone.
An additional thing to consider is the backlash of the gears. Worm gears have higher gear ratios, sometimes three hundred:1. This is critical for energy purposes, but is at the exact same time inefficient. Worm gears can produce heat for the duration of the sliding movement, so a high-quality lubricant is crucial. This type of lubricant will lessen heat and make certain optimum efficiency. The subsequent guidelines will help you decide on the correct lubricant for your worm gear.
In lower-pace apps, a grease lubricant may possibly be ample. In larger-speed purposes, it truly is ideal to utilize a synthetic lubricant to stop premature failure and tooth wear. In the two instances, lubricant decision depends on the tangential and rotational pace. It is crucial to follow manufacturer’s guidelines concerning the decision of lubricant. But bear in mind that lubricant selection is not an effortless activity.

China supplier Planar Double Enveloping Worm Gear Unit with Hollow Shaft     with high qualityChina supplier Planar Double Enveloping Worm Gear Unit with Hollow Shaft     with high quality