China Custom Handle Manual Type Scaffold Worm Screw Jack with Best Sales

Item Description

Merchandise Description

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

the tooth surface is up to HRC58-sixty two. The gears are groun d grinding engineering with high precision and
good make contact with.
2, High transmission performance: solitary phase is higher than 96.5%, double degree is better than 93%, third
stage is greater than 90%.
3, Easy operation and low sounds.
4, Little measurement, mild weight, prolonged support daily life and higher carrying ability.
five, Easy to disassemble and effortless to set up.

Expressed Strategy Of Design


Solution Parameters




How to Decide on a Screw Jack? Some queries you require response pls.

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

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

The lifting pace is   ?   mm/2nd  (it signifies how a lot time you want to use to finish the stroke?
Such as I want to use 20 seconds to finish the 500mm stroke then can come out the velocity is 25mm/s )

Screw jack SWL2.5-one hundred twenty efficiency parameters desk as the under:
Q2: Which the screw top you need to have?   Response:  I require          (A B C D E F).
Q3: Manual type (Hand wheel driven) or electrical motor driven variety?  Response: I need to have         variety. 
Q4: Screw movement (screw travelling up and down when operating) or Nut motion (the nut travelling up
and down when doing work)?  Upright or Inverted?    Response: I need           (A B E F)


Our Benefits



Packaging & Transport


Company Profile

Xihu (West Lake) Transmission Gear Co., Ltd. situated HangZhou metropolis, ZHangZhoug, as 1 professional
company and exporter of cycloidal pin wheel reducer,worm reducer, equipment reducer, gearbox ,
AC motor and relative spare elements, owns rich encounter in this line for a lot of many years.

We are 1 direct factory, with sophisticated generation equipment, the sturdy improvement crew and
generating ability to offer you good quality products for buyers.

Our items widely served to a variety of industries of Metallurgy, Substances, textile,medicine,picket
and so on. Major marketplaces: China, Africa,Australia,Vietnam, Turkey,Japan, Korea, Philippines…

Welcome to question us any inquiries, excellent supply often for you for lengthy time period organization.


Q: Are you buying and selling business or company?
A: We are manufacturing facility.

Q: How lengthy is your supply time?
A: Normally it is 5-10 times if the goods are in stock. or it is fifteen-twenty times if the products are not in inventory.

Q: Can we acquire 1 personal computer of every item for top quality screening?
A: Indeed, we are happy to take trial purchase for quality screening.

Q:How to decide on a gearbox which fulfills your requirement?
A:You can refer to our catalogue to select the gearbox or we can help to pick when you provide
the specialized info of necessary output torque, output speed and motor parameter and so forth.

Q: What details shall we give before putting a buy get?
A:a) Type of the gearbox, ratio, enter and output kind, input flange, mounting placement, and motor informationetc.
b) Housing shade.
c) Buy amount.
d) Other particular demands.

Worm Shafts and Gearboxes

If you have a gearbox, you may possibly be asking yourself what the greatest Worm Shaft is for your application. There are numerous factors to consider, which includes the Concave condition, Quantity of threads, and Lubrication. This article will describe every single issue and help you pick the correct Worm Shaft for your gearbox. There are many options accessible on the marketplace, so will not be reluctant to shop around. If you are new to the entire world of gearboxes, read on to find out a lot more about this well-liked variety of gearbox.
worm shaft

Concave condition

The geometry of a worm gear varies significantly dependent on its maker and its intended use. Early worms had a simple profile that resembled a screw thread and could be chased on a lathe. Afterwards, equipment with a straight sided g-angle had been designed to produce threads that were parallel to the worm’s axis. Grinding was also produced to enhance the end of worm threads and minimize distortions that take place with hardening.
To decide on a worm with the correct geometry, the diameter of the worm gear must be in the same device as the worm’s shaft. When the basic profile of the worm equipment is decided, the worm gear teeth can be specified. The calculation also involves an angle for the worm shaft to avoid it from overheating. The angle of the worm shaft must be as close to the vertical axis as possible.
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. Given that the enamel of the worm are in get in touch with with each other, they generate important friction. Not like double-enveloping worm gears, non-throated worm gears are a lot more compact and can handle smaller loads. They are also simple to manufacture.
The worm gears of various makers provide a lot of positive aspects. For occasion, worm gears are 1 of the most efficient methods to boost torque, while decrease-top quality materials like bronze are challenging to lubricate. Worm gears also have a minimal failure charge since they allow for substantial leeway in the design procedure. In spite of the variations among the two expectations, the overall overall performance of a worm equipment technique is the exact same.
The cone-formed worm is an additional variety. This is a technological scheme that combines a straight worm shaft with a concave arc. The concave arc is also a helpful utility model. Worms with this condition have more than three contacts at the exact same time, which signifies they can lessen a large diameter without abnormal put on. It is also a relatively reduced-price model.
worm shaft

Thread sample

A excellent worm gear needs a best thread pattern. There are a few essential parameters that figure out how great a thread sample is. First of all, the threading sample need to be ACME-threaded. If this is not attainable, the thread need to be created with straight sides. Then, the linear pitch of the “worm” must be the very same as the circular pitch of the corresponding worm wheel. In basic terms, this means the pitch of the “worm” is the exact same as the round pitch of the worm wheel. A quick-alter gearbox is generally utilised with this sort of worm equipment. Alternatively, lead-screw alter gears are utilised instead of a rapid-modify equipment box. The pitch of a worm equipment equals the helix angle of a screw.
A worm gear’s axial pitch must match the circular pitch of a equipment with a greater axial pitch. The round pitch is the length amongst the details of enamel on the worm, even though the axial pitch is the length between the worm’s enamel. Yet another issue is the worm’s direct angle. The angle among the pitch cylinder and worm shaft is referred to as its guide angle, and the higher the lead angle, the increased the effectiveness of a gear.
Worm equipment tooth geometry varies dependent on the manufacturer and supposed use. In early worms, threading resembled the thread on a screw, and was simply chased employing a lathe. Later, grinding improved worm thread finishes and minimized distortions from hardening. As a end result, these days, most worm gears have a thread sample corresponding to their measurement. When deciding on a worm gear, make positive to verify for the amount of threads before purchasing it.
A worm gear’s threading is crucial in its operation. Worm enamel are normally cylindrical, and are arranged in a sample equivalent to screw or nut threads. Worm enamel are typically fashioned on an axis of perpendicular in comparison to their parallel counterparts. Since of this, they have greater torque than their spur gear counterparts. Moreover, the gearing has a minimal output pace and substantial torque.

Amount of threads

Various sorts of worm gears use various quantities of threads on their planetary gears. A solitary threaded worm gear ought to not be utilised with a double-threaded worm. A solitary-threaded worm equipment need to be used with a single-threaded worm. One-threaded worms are far more powerful for speed reduction than double-threaded ones.
The number of threads on a worm’s shaft is a ratio that compares the pitch diameter and variety of tooth. In general, worms have 1,2,4 threads, but some have 3, 5, or six. Counting thread starts can help you decide the variety of threads on a worm. A single-threaded worm has less threads than a several-threaded worm, but a multi-threaded worm will have much more threads than a mono-threaded planetary equipment.
To measure the variety of threads on a worm shaft, a tiny fixture with two floor faces is employed. The worm should be taken out from its housing so that the concluded thread spot can be inspected. Right after determining the number of threads, basic measurements of the worm’s outside the house diameter and thread depth are taken. When the worm has been accounted for, a solid of the tooth space is manufactured making use of epoxy content. The casting is moulded in between the two tooth flanks. The V-block fixture rests towards the exterior diameter of the worm.
The round pitch of a worm and its axial pitch have to match the circular pitch of a larger gear. The axial pitch of a worm is the distance in between the details of the teeth 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 quantity of threads. A worm gear with a high ratio can be simply decreased in a single stage by using a established of worm gears. Even so, a multi-thread worm will have far more than two threads. The worm gear is also far more productive than solitary-threaded gears. And a worm gear with a high ratio will let the motor to be used in a range of programs.
worm shaft


The lubrication of a worm gear is especially difficult, because of to its friction and substantial sliding contact drive. Fortunately, there are numerous possibilities for lubricants, such as compounded oils. Compounded oils are mineral-primarily based lubricants formulated with 10 per cent or much more fatty acid, rust and oxidation inhibitors, and other additives. This mixture benefits in enhanced lubricity, reduced friction, and reduced sliding use.
When picking a lubricant for a worm shaft, make certain the product’s viscosity is proper for the sort of gearing employed. A lower viscosity will make the gearbox difficult to actuate and rotate. Worm gears also bear a higher sliding movement than rolling movement, so grease have to be ready to migrate evenly during the gearbox. Repeated sliding motions will press the grease absent from the contact zone.
Another thought is the backlash of the gears. Worm gears have high gear ratios, occasionally three hundred:1. This is critical for energy purposes, but is at the very same time inefficient. Worm gears can generate warmth in the course of the sliding movement, so a substantial-quality lubricant is vital. This sort of lubricant will lessen warmth and make certain ideal functionality. The following guidelines will help you select the right lubricant for your worm equipment.
In lower-pace applications, a grease lubricant might be ample. In larger-velocity applications, it truly is very best to implement a synthetic lubricant to avoid premature failure and tooth put on. In each cases, lubricant selection is dependent on the tangential and rotational pace. It is crucial to comply with manufacturer’s guidelines regarding the choice of lubricant. But keep in mind that lubricant selection is not an straightforward task.

China Custom Handle Manual Type Scaffold Worm Screw Jack     with Best SalesChina Custom Handle Manual Type Scaffold Worm Screw Jack     with Best Sales

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