China factory 12V 24V 200W 250W 300W DC Motor with Worm Gear for Bike near me manufacturer

Item Description

 12v 24v 200w 250w 300W dc motor with worm equipment for bike 

one.Technical technical specs:

voltage/electrical power:24v/250w
no load present: 2.0A
no load pace:380rpm
rated present:13.5A
rated speed:330rpm
rated torque:1.1N.m hundred twenty five:one

pls notice:above specifications are common parameters,it can be created in accordance to your demands.

2.Generation Movement

3.Business Details

 In current ten several years, DERRY has been committed to the manufacture of the motor goods and the main products can be classified into the pursuing sequence, specifically DC motor, DC gear motor, AC motor, AC equipment motor, Stepper motor, Stepper gear motor, Servo motor and Linear actuator series. 

Our motor products are extensively applied in the fields of aerospace business, automotive business, financial gear, household appliance, industrial automation and robotics, medical tools, place of work tools, packing machinery and transmission market, giving consumers dependable tailored remedies for driving and managing.

four.Our Services

one). General Support:


two). Customization Support:

Motor specification(no-load pace , voltage, torque , diameter, sound, life, tests) and shaft size can be tailor-made in accordance to customer’s specifications.

5.Package & Shipping



Worm Shafts and Gearboxes

If you have a gearbox, you may be wondering what the ideal Worm Shaft is for your application. There are several issues to contemplate, including the Concave form, Variety of threads, and Lubrication. This article will describe every single factor and help you choose the correct Worm Shaft for your gearbox. There are many alternatives offered on the marketplace, so never hesitate to shop around. If you are new to the globe of gearboxes, read through on to find out more about this well-known sort of gearbox.
worm shaft

Concave shape

The geometry of a worm equipment may differ considerably based on its manufacturer and its intended use. Early worms experienced a basic profile that resembled a screw thread and could be chased on a lathe. Later on, equipment with a straight sided g-angle had been designed to generate threads that had been parallel to the worm’s axis. Grinding was also designed to boost the end of worm threads and decrease distortions that arise with hardening.
To pick a worm with the suitable geometry, the diameter of the worm gear need to be in the same unit as the worm’s shaft. When the basic profile of the worm equipment is established, the worm gear tooth can be specified. The calculation also requires an angle for the worm shaft to prevent it from overheating. The angle of the worm shaft need to be as close to the vertical axis as possible.
Double-enveloping worm gears, on the other hand, do not have a throat around the worm. They are helical gears with a straight worm shaft. Since the enamel of the worm are in get in touch with with every single other, they create considerable friction. As opposed to double-enveloping worm gears, non-throated worm gears are far more compact and can manage more compact masses. They are also straightforward to manufacture.
The worm gears of various companies offer you several positive aspects. For instance, worm gears are 1 of the most successful ways to enhance torque, whilst decrease-good quality resources like bronze are difficult to lubricate. Worm gears also have a lower failure charge due to the fact they allow for considerable leeway in the layout method. In spite of the distinctions between the two expectations, the all round efficiency of a worm gear method is the same.
The cone-shaped worm is another variety. This is a technological plan that brings together a straight worm shaft with a concave arc. The concave arc is also a useful utility design. Worms with this shape have far more than 3 contacts at the identical time, which means they can reduce a big diameter without abnormal use. It is also a relatively minimal-cost design.
worm shaft

Thread pattern

A excellent worm gear demands a best thread pattern. There are a number of important parameters that decide how good a thread sample is. To begin with, the threading pattern need to be ACME-threaded. If this is not attainable, the thread should be produced with straight sides. Then, the linear pitch of the “worm” must be the exact same as the circular pitch of the corresponding worm wheel. In easy conditions, this signifies the pitch of the “worm” is the same as the circular pitch of the worm wheel. A fast-alter gearbox is usually used with this kind of worm gear. Alternatively, guide-screw adjust gears are utilised rather of a fast-modify equipment box. The pitch of a worm gear equals the helix angle of a screw.
A worm gear’s axial pitch have to match the circular pitch of a gear with a increased axial pitch. The round pitch is the distance between the factors of enamel on the worm, while the axial pitch is the length among the worm’s enamel. An additional factor is the worm’s guide angle. The angle amongst the pitch cylinder and worm shaft is referred to as its direct angle, and the greater the direct angle, the greater the efficiency of a equipment.
Worm gear tooth geometry varies dependent on the company and meant use. In early worms, threading resembled the thread on a screw, and was simply chased making use of a lathe. Later on, grinding improved worm thread finishes and minimized distortions from hardening. As a result, right now, most worm gears have a thread sample corresponding to their size. When deciding on a worm gear, make sure to check for the variety of threads prior to acquiring it.
A worm gear’s threading is crucial in its procedure. Worm tooth are generally cylindrical, and are organized in a pattern 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. Furthermore, the gearing has a minimal output velocity and large torque.

Variety of threads

Various types of worm gears use various numbers of threads on their planetary gears. A single threaded worm equipment should not be used with a double-threaded worm. A solitary-threaded worm gear ought to be used with a one-threaded worm. One-threaded worms are much more powerful for velocity reduction than double-threaded kinds.
The amount of threads on a worm’s shaft is a ratio that compares the pitch diameter and variety of tooth. In common, worms have 1,2,4 threads, but some have three, 5, or 6. Counting thread starts off can assist you decide the variety of threads on a worm. A single-threaded worm has much less threads than a multiple-threaded worm, but a multi-threaded worm will have much 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 need to be removed from its housing so that the finished thread area can be inspected. After figuring out the amount of threads, basic measurements of the worm’s outdoors diameter and thread depth are taken. Once the worm has been accounted for, a cast of the tooth room is made making use of epoxy material. The casting is moulded among the two tooth flanks. The V-block fixture rests against the outdoors diameter of the worm.
The circular pitch of a worm and its axial pitch should match the round pitch of a bigger gear. The axial pitch of a worm is the distance between the details of the teeth on a worm’s pitch diameter. The guide of a thread is the distance a thread travels in 1 revolution. The direct angle is the tangent to the helix of a thread on a cylinder.
The worm gear’s pace transmission ratio is dependent on the amount of threads. A worm gear with a higher ratio can be effortlessly reduced in one action by employing a established of worm gears. Even so, a multi-thread worm will have much more than two threads. The worm equipment is also a lot more efficient than one-threaded gears. And a worm gear with a higher ratio will let the motor to be used in a range of purposes.
worm shaft


The lubrication of a worm gear is notably challenging, thanks to its friction and high sliding make contact with pressure. Fortunately, there are a number of alternatives for lubricants, such as compounded oils. Compounded oils are mineral-dependent lubricants formulated with ten per cent or a lot more fatty acid, rust and oxidation inhibitors, and other additives. This blend benefits in enhanced lubricity, lowered friction, and reduced sliding wear.
When choosing a lubricant for a worm shaft, make confident the product’s viscosity is right for the sort of gearing utilized. A reduced viscosity will make the gearbox hard to actuate and rotate. Worm gears also undergo a better sliding movement than rolling motion, so grease have to be capable to migrate evenly throughout the gearbox. Recurring sliding motions will push the grease absent from the get in touch with zone.
An additional thing to consider is the backlash of the gears. Worm gears have high gear ratios, often three hundred:1. This is essential for power apps, but is at the exact same time inefficient. Worm gears can generate heat in the course of the sliding movement, so a large-top quality lubricant is crucial. This kind of lubricant will decrease warmth and guarantee optimum overall performance. The adhering to tips will assist you decide on the correct lubricant for your worm gear.
In lower-speed purposes, a grease lubricant may be enough. In increased-velocity apps, it’s best to use a artificial lubricant to avert premature failure and tooth dress in. In each cases, lubricant option depends on the tangential and rotational velocity. It is important to adhere to manufacturer’s guidelines concerning the decision of lubricant. But don’t forget that lubricant selection is not an effortless process.

China factory 12V 24V 200W 250W 300W DC Motor with Worm Gear for Bike     near me manufacturer China factory 12V 24V 200W 250W 300W DC Motor with Worm Gear for Bike     near me manufacturer