China best Copper Nut Head Type Worm Screw Jack for Lifting with Great quality

Item Description


Product Description

1, The equipment is produced of higher-energy minimal-carbon alloy steel by carburizing and quenching. The hardness of

the tooth floor is up to HRC58-sixty two. The gears are groun d grinding engineering with substantial precision and
very good make contact with.
2, High transmission efficiency: single phase is greater than 96.5%, double degree is increased than ninety three%, 3rd
stage is increased than 90%.
three, Clean operation and reduced noise.
4, Modest size, light fat, lengthy service existence and substantial carrying capability.
five, Simple to disassemble and simple to install.

Expressed Approach Of Model


Item Parameters



How to Select a Screw Jack? Some questions you need response pls.

Q1: The potential is to load ? KG (it indicates how many Kg or Tons the screw jack need to have to raise or drop?)

The stroke is ? mm (it means the screw shaft size, these kinds of as 500mm)

The lifting pace is ? mm/second (it implies how significantly time you want to use to complete the stroke?
This kind of as I want to use twenty seconds to end the 500mm stroke then can come out the velocity is 25mm/s )

Screw jack SWL2.5-one hundred twenty overall performance parameters desk as the beneath:
Q2: Which the screw prime you want? Answer: I want (A B C D E F).
Q3: Manual type (Hand wheel driven) or electric powered motor pushed kind? Answer: I need to have kind.
This fall: Screw movement (screw travelling up and down when working) or Nut motion (the nut travelling up
and down when doing work)? Upright or Inverted? Reply: I need to have (A B E F)

Our Benefits



Packaging & Shipping


Business Profile

Xihu (West Lake) Transmission Gear Co., Ltd. positioned HangZhou town, ZHangZhoug, as 1 specialist
producer and exporter of cycloidal pin wheel reducer,worm reducer, equipment reducer, gearbox ,
AC motor and relative spare parts, owns abundant encounter in this line for many a long time.

We are 1 direct manufacturing facility, with advanced creation equipment, the sturdy growth team and
producing capacity to provide top quality items for consumers.

Our goods extensively served to various industries of Metallurgy, Chemical substances, textile,medication,wood
etc. Main markets: China, Africa,Australia,Vietnam, Turkey,Japan, Korea, Philippines…

Welcome to ask us any concerns, great offer often for you for long time period business.


Q: Are you investing firm or producer?
A: We are manufacturing unit.

Q: How prolonged is your shipping and delivery time?
A: Typically it is 5-10 days if the items are in inventory. or it is 15-twenty times if the products are not in inventory.

Q: Can we acquire 1 computer of every single product for high quality screening?
A: Indeed, we are glad to accept trial buy for quality screening.

Q:How to pick a gearbox which satisfies your need?
A:You can refer to our catalogue to pick the gearbox or we can help to select when you give
the technological data of necessary output torque, output pace and motor parameter and many others.

Q: What details shall we give ahead of placing a obtain purchase?
A:a) Sort of the gearbox, ratio, enter and output kind, input flange, mounting placement, and motor informationetc.
b) Housing color.
c) Obtain quantity.
d) Other special requirements.

Worm Shafts and Gearboxes

If you have a gearbox, you might be pondering what the best Worm Shaft is for your software. There are a number of things to take into account, which includes the Concave form, Variety of threads, and Lubrication. This write-up will make clear every single factor and support you pick the right Worm Shaft for your gearbox. There are a lot of options offered on the marketplace, so never wait to store around. If you are new to the world of gearboxes, go through on to understand much more about this common kind of gearbox.
worm shaft

Concave condition

The geometry of a worm gear may differ noticeably based on its producer and its meant use. Early worms had a standard profile that resembled a screw thread and could be chased on a lathe. Later, resources with a straight sided g-angle had been developed to make threads that were parallel to the worm’s axis. Grinding was also designed to increase the finish of worm threads and minimize distortions that happen with hardening.
To pick a worm with the correct geometry, the diameter of the worm equipment need to be in the same device as the worm’s shaft. After the standard profile of the worm equipment is established, the worm gear enamel can be specified. The calculation also involves an angle for the worm shaft to avoid it from overheating. The angle of the worm shaft need to be as shut to the vertical axis as feasible.
Double-enveloping worm gears, on the other hand, do not have a throat close to the worm. They are helical gears with a straight worm shaft. Considering that the tooth of the worm are in get in touch with with every other, they produce important friction. Unlike double-enveloping worm gears, non-throated worm gears are more compact and can manage smaller sized loads. They are also straightforward to manufacture.
The worm gears of diverse producers provide several advantages. For instance, worm gears are a single of the most successful methods to improve torque, although reduce-quality resources like bronze are challenging to lubricate. Worm gears also have a lower failure fee because they permit for significant leeway in the layout process. Even with the distinctions between the two specifications, the general performance of a worm equipment technique is the exact same.
The cone-formed worm is another variety. This is a technological scheme that brings together a straight worm shaft with a concave arc. The concave arc is also a useful utility product. Worms with this form have more than 3 contacts at the same time, which signifies they can lessen a massive diameter with out abnormal dress in. It is also a reasonably lower-price design.
worm shaft

Thread sample

A great worm gear calls for a best thread sample. There are a number of important parameters that decide how very good a thread sample is. Firstly, the threading sample need to be ACME-threaded. If this is not feasible, the thread have to be created with straight sides. Then, the linear pitch of the “worm” need to be the identical as the round pitch of the corresponding worm wheel. In straightforward conditions, this implies the pitch of the “worm” is the exact same as the round pitch of the worm wheel. A quick-modify gearbox is usually utilized with this kind of worm equipment. Alternatively, guide-screw alter gears are used instead of a quick-alter equipment box. The pitch of a worm equipment equals the helix angle of a screw.
A worm gear’s axial pitch need to match the round pitch of a gear with a increased axial pitch. The round pitch is the distance in between the points of tooth on the worm, although the axial pitch is the length among the worm’s enamel. One more factor is the worm’s guide angle. The angle in between the pitch cylinder and worm shaft is known as its direct angle, and the greater the guide angle, the higher the efficiency of a equipment.
Worm gear tooth geometry differs relying on the maker and meant use. In early worms, threading resembled the thread on a screw, and was effortlessly chased utilizing a lathe. Later, grinding improved worm thread finishes and minimized distortions from hardening. As a outcome, today, most worm gears have a thread pattern corresponding to their size. When picking a worm equipment, make sure to examine for the amount of threads before buying it.
A worm gear’s threading is crucial in its procedure. Worm teeth are normally cylindrical, and are arranged in a sample similar to screw or nut threads. Worm tooth are typically shaped on an axis of perpendicular in comparison to their parallel counterparts. Because of this, they have greater torque than their spur equipment counterparts. In addition, the gearing has a reduced output pace and large torque.

Variety of threads

Distinct varieties of worm gears use different numbers of threads on their planetary gears. A solitary threaded worm equipment ought to not be utilized with a double-threaded worm. A one-threaded worm equipment ought to be utilised with a solitary-threaded worm. One-threaded worms are more effective for speed reduction than double-threaded kinds.
The amount of threads on a worm’s shaft is a ratio that compares the pitch diameter and number of teeth. In standard, worms have 1,2,4 threads, but some have three, five, or six. Counting thread commences can help you determine the amount of threads on a worm. A one-threaded worm has much less threads than a multiple-threaded worm, but a multi-threaded worm will have more threads than a mono-threaded planetary equipment.
To measure the amount of threads on a worm shaft, a modest fixture with two floor faces is employed. The worm must be taken off from its housing so that the completed thread area can be inspected. Right after determining the quantity of threads, basic measurements of the worm’s outdoors diameter and thread depth are taken. When the worm has been accounted for, a solid of the tooth room is made making use of epoxy substance. The casting is moulded between the two tooth flanks. The V-block fixture rests towards the outdoors diameter of the worm.
The circular pitch of a worm and its axial pitch should match the round pitch of a bigger equipment. The axial pitch of a worm is the distance amongst the details of the tooth on a worm’s pitch diameter. The guide of a thread is the distance a thread travels in one particular revolution. The lead angle is the tangent to the helix of a thread on a cylinder.
The worm gear’s velocity transmission ratio is primarily based on the number of threads. A worm gear with a high ratio can be effortlessly lowered in 1 action by employing a established of worm gears. Nonetheless, a multi-thread worm will have far more than two threads. The worm gear is also more efficient than solitary-threaded gears. And a worm gear with a higher ratio will enable the motor to be utilized in a selection of purposes.
worm shaft


The lubrication of a worm gear is especially demanding, thanks to its friction and substantial sliding contact force. Luckily, there are a number of options for lubricants, this kind of as compounded oils. Compounded oils are mineral-dependent lubricants formulated with ten % or much more fatty acid, rust and oxidation inhibitors, and other additives. This mix final results in improved lubricity, lowered friction, and decrease sliding wear.
When deciding on a lubricant for a worm shaft, make positive the product’s viscosity is proper for the sort of gearing utilised. A reduced viscosity will make the gearbox hard to actuate and rotate. Worm gears also undergo a higher sliding movement than rolling motion, so grease must be able to migrate evenly throughout the gearbox. Recurring sliding motions will push the grease absent from the make contact with zone.
Another thing to consider is the backlash of the gears. Worm gears have high equipment ratios, often 300:1. This is crucial for power applications, but is at the identical time inefficient. Worm gears can generate warmth throughout the sliding movement, so a high-good quality lubricant is essential. This sort of lubricant will reduce warmth and make certain best efficiency. The following suggestions will aid you choose the correct lubricant for your worm gear.
In lower-pace apps, a grease lubricant might be adequate. In higher-pace programs, it’s ideal to implement a artificial lubricant to avoid premature failure and tooth use. In equally cases, lubricant option depends on the tangential and rotational velocity. It is essential to stick to manufacturer’s tips with regards to the decision of lubricant. But remember that lubricant option is not an effortless task.

China best Copper Nut Head Type Worm Screw Jack for Lifting     with Great qualityChina best Copper Nut Head Type Worm Screw Jack for Lifting     with Great quality