Tag Archives: helical worm

China manufacturer Spline Round Key Way Pin Threaded CZPT Hollow Through Hole Flat D Shape Knurling Spur Helical Worm Transmission Drive Auto Parts Gear Pinion Gearbox Axis Shaft

Product Description

Spline Round Key Way Pin Threaded CHINAMFG Hollow Through Hole Flat D Shape Knurling Spur Helical Worm Transmission Drive Auto Parts Gear Pinion Gearbox Axis Shaft

Features

1. High precision gear shaft for smooth, quiet operation.
2. Flexible for custom-made requests.
3. Stable transmission, low impact, vibration, and noise.
4. Heavy Load capability, more compact, but less complex.

Product Description

 

Products   Spur Gear, Helical Gear, Herringbone Gear, Spiral Bevel Gear, Straight Bevel Gear, Worm Gear, Shaft, Pinion
Module   M0.3-M10
Precision grade   DIN6, DIN7, DIN8, DIN10
Pressure angle   14.5 degree, 15 degree, 20 degree
Material   Medium Carbon Steel: 35#, 45#
Carburizing Steel: 20CrMnTi, 20CrMnMo, 20CrMo
Alloy Steel: 40Cr, 35CrMo, 42CrMo, 40CrNiMo
Cast Iron: HT250, QT400
Copper, Stainless Steel, Brass, Nylon, POM, and so on
Heat treatment   Hardening & Tempering, Surface Quenching,
Integral Quenching, Carburizing Quenching, Tempering,
Normalizing, Nitriding
Surface treatment   Blacking, Polishing, Anodization, Chrome Plating, Zinc Plating, Nickel Plating
Application   Gearbox and reducer;
Precision cutting machines, Lathes machines;
Milling machines;
Grinder machine;
Automated mechanical systems;
Automated warehousing systems.
Gear hobbing machines, gear shapers, gear shaving machines, gear milling, gear grinding
machines and many kinds of gear-related machines.
Machining process   Forging, Machining, Hobbing, Milling, Shaving, Grinding, Heat treatment…

Detailed Photos

 

 

Our Advantages

Related Product

 

Company Profile

FAQ

Q: How to ship the worm gear to us?
A: It is available by air, sea, or train.

Q: How to pay the money?
A: T/T and L/C are preferred, with different currencies, including USD, EUR, RMB, etc.

Q: How can I know if the product is suitable for me?
A: >1ST confirm drawing and specification >2nd test sample >3rd start mass production.

Q: Can I come to your company to visit?
A: Yes, you are welcome to visit us at any time.

Shipping Cost:

Estimated freight per unit.



To be negotiated
Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Agricultural Machinery, Car, Gearbox
Hardness: Hardened Tooth Surface
Gear Position: External Gear
Samples:
US$ 50/Piece
1 Piece(Min.Order)

|

Order Sample

Worm gear with shaft
Customization:
Available

|

Customized Request

spline shaft

Can spline shafts be used in both mobile and stationary machinery?

Yes, spline shafts can be used in both mobile and stationary machinery. Here’s a detailed explanation:

1. Mobile Machinery:

Spline shafts find extensive use in various types of mobile machinery. For example:

  • In Automotive Applications: Spline shafts are commonly used in automotive drivetrains, where they transmit torque from the engine to the wheels. They are found in components such as the transmission, differential, and axle shafts.
  • In Construction and Earthmoving Equipment: Spline shafts are utilized in construction machinery, such as excavators, loaders, and bulldozers. They are employed in the powertrain systems to transfer torque and drive the hydraulic pumps or propel the machine.
  • In Agricultural Equipment: Spline shafts are used in agricultural machinery like tractors, combines, and harvesters. They help transfer power from the engine to various driven components, such as the wheels, PTO (power take-off), or hydraulic systems.
  • In Off-Road Vehicles: Spline shafts are present in off-road vehicles, including ATVs (all-terrain vehicles) and military vehicles. They enable power transmission to the wheels or drivetrain components, ensuring mobility and performance in challenging terrains.

2. Stationary Machinery:

Spline shafts are also widely employed in stationary machinery across various industries. Some examples include:

  • In Machine Tools: Spline shafts are used in machine tools, such as lathes, milling machines, and grinding machines. They provide torque transmission in the spindle or lead screw mechanisms, enabling precision motion control and material removal operations.
  • In Industrial Gearboxes: Spline shafts play a crucial role in industrial gearboxes used in manufacturing and processing plants. They transmit torque between input and output shafts, enabling speed reduction or increase as required by the application.
  • In Power Generation: Spline shafts are utilized in power generation equipment, including turbines and generators. They help transmit torque between the rotating rotor and the stationary components, facilitating energy conversion.
  • In Pump and Compressor Systems: Spline shafts are present in pumps and compressors used in various industries. They transmit torque from the motor or prime mover to the impeller or compressor elements, enabling fluid or gas transfer.

The versatility of spline shafts makes them suitable for a wide range of applications, both mobile and stationary. Their ability to efficiently transmit torque, accommodate misalignment, distribute loads, and provide reliable connections makes them a preferred choice in diverse machinery across industries.

spline shaft

Can spline shafts be applied in aerospace and aviation equipment?

Yes, spline shafts are commonly applied in aerospace and aviation equipment due to their ability to transmit torque and provide precise rotational motion. Here’s how spline shafts are used in the aerospace and aviation industry:

1. Aircraft Engines:

Spline shafts are utilized in aircraft engines for various purposes. They can be found in the engine’s accessory gearbox, where they transmit torque from the engine to drive auxiliary components such as fuel pumps, hydraulic pumps, generators, and engine starters. Spline shafts are also present in the engine’s variable geometry systems, which control the position of components like variable stator vanes or variable inlet guide vanes.

2. Flight Control Systems:

Spline shafts play a vital role in aircraft flight control systems. They are employed in the actuators and control mechanisms that operate the flaps, ailerons, elevators, rudders, and other control surfaces. Spline shafts enable precise and efficient transfer of control inputs from the cockpit to the respective control surfaces, contributing to the maneuverability and stability of the aircraft.

3. Landing Gear:

Spline shafts are used in the landing gear systems of aircraft. They can be found in components such as the landing gear actuator, which extends and retracts the landing gear, and the steering mechanism that controls the nose wheel. Spline shafts in landing gear systems need to withstand high loads, provide reliable operation, and ensure precise movement for safe and smooth landings and takeoffs.

4. Helicopter Rotors:

Helicopters rely on spline shafts in the main rotor assembly. The main rotor shaft, which transfers power from the helicopter’s engine to the rotor blades, often incorporates splines to ensure a secure connection and efficient torque transmission. Spline shafts are critical for maintaining stable and precise rotation of the rotor blades, allowing for controlled lift and maneuverability.

5. Auxiliary Systems:

Spline shafts are also applied in various auxiliary systems in aerospace and aviation equipment. These include systems such as power transmission for onboard generators, environmental control systems, fuel control systems, and hydraulic systems. Spline shafts in these applications contribute to the reliable operation and efficient functioning of the auxiliary equipment.

In aerospace and aviation applications, spline shafts are designed to meet stringent requirements for strength, durability, precision, and weight reduction. They are often made from high-strength materials such as titanium or alloy steel to withstand the demanding operating conditions and weight constraints of aircraft. Additionally, advanced manufacturing techniques are employed to ensure the dimensional accuracy and quality of spline shafts for critical aerospace applications.

The use of spline shafts in aerospace and aviation equipment enables precise control, efficient power transmission, and reliable operation, contributing to the safety, performance, and functionality of aircraft and related systems.

spline shaft

What is a spline shaft and what is its primary function?

A spline shaft is a mechanical component that consists of a series of ridges or teeth (called splines) that are machined onto the surface of the shaft. Its primary function is to transmit torque while allowing for the relative movement or sliding of mating components. Here’s a detailed explanation:

1. Structure and Design:

A spline shaft typically has a cylindrical shape with external or internal splines. The external spline shaft has splines on the outer surface, while the internal spline shaft has splines on the inner bore. The number, size, and shape of the splines can vary depending on the specific application and design requirements.

2. Torque Transmission:

The main function of a spline shaft is to transmit torque between two mating components, such as gears, couplings, or other rotational elements. The splines on the shaft engage with corresponding splines on the mating component, creating a mechanical interlock. When torque is applied to the spline shaft, the engagement between the splines ensures that the rotational force is transferred from the shaft to the mating component, allowing the system to transmit power.

3. Relative Movement:

Unlike other types of shafts, a spline shaft allows for relative movement or sliding between the shaft and the mating component. This sliding motion can be axial (along the shaft’s axis) or radial (perpendicular to the shaft’s axis). The splines provide a precise and controlled interface that allows for this movement while maintaining torque transmission. This feature is particularly useful in applications where axial or radial displacement or misalignment needs to be accommodated.

4. Load Distribution:

Another important function of a spline shaft is to distribute the applied load evenly along its length. The splines create multiple contact points between the shaft and the mating component, which helps to distribute the torque and axial or radial forces over a larger surface area. This load distribution minimizes stress concentrations and reduces the risk of premature wear or failure.

5. Versatility and Applications:

Spline shafts find applications in various industries and systems, including automotive, aerospace, machinery, and power transmission. They are commonly used in gearboxes, drive systems, power take-off units, steering systems, and many other rotational mechanisms where torque transmission, relative movement, and load distribution are essential.

6. Design Considerations:

When designing a spline shaft, factors such as the torque requirements, speed, applied loads, and environmental conditions need to be considered. The spline geometry, material selection, and surface finish are critical for ensuring proper engagement, load-bearing capacity, and durability of the spline shaft.

In summary, a spline shaft is a mechanical component with splines that allows for torque transmission while accommodating relative movement or sliding between mating components. Its primary function is to transmit rotational force, distribute loads, and enable axial or radial displacement in various applications requiring precise torque transfer and flexibility.

China manufacturer Spline Round Key Way Pin Threaded CZPT Hollow Through Hole Flat D Shape Knurling Spur Helical Worm Transmission Drive Auto Parts Gear Pinion Gearbox Axis Shaft  China manufacturer Spline Round Key Way Pin Threaded CZPT Hollow Through Hole Flat D Shape Knurling Spur Helical Worm Transmission Drive Auto Parts Gear Pinion Gearbox Axis Shaft
editor by CX 2023-09-21

China Best Sales SKILLTRANS Guangdong PA46 double plastic worm gears left hand Helical gears with Good quality

1. Name: Helical gears,plastic gears pair2. Item NO: ZH-KB373. Use: For JUICER MAEKR etc, Small home appliances
4. Material: PA46 Hand:LEFT Helix angle:11.275° Number of Teeth:29& 12
Pressure angle:15°20° Tip diameter:31.5mm Root diameter:12.7mm
5.Parameter: Module:1 mn
6. Weight:7.69G
7. Certification: ISO9001 RoSH
8. Standard:DIN GB ISO JIS BA ANSI
9. Grade: 9-12
10. Delivery Time: 15-28days
11.Color: Any color is all right, usually is white,black,grey
12.Product feature: The gearbox rotates smoothly without sticking, slipping and low noise. After assembled with the motor,its test service life is 3500HPS:MOQ is 5000piece, Small order is accept, price can be discussed, welcome OEM.Customer’s logo and packing is available!
Products Show

Are you headache for below problem?
yes

bad quality,no guarantee time
we give 3 years

cannot find a real manufacturer
we are direct

never on time delivery
we can do it

cannot find ideal product
we can design

cannot get best price
we’ll give

Our Service Welcome OEMIndependent R&D capability. Help you solve problems,especially for small home appliances coffer maker, AC60F B 0571 80B Friction Kit Clutch Kit Auto Transmission For Gearbox Transnation juicer.
QC&Measure Center100%QC & Top class measuring center, CMMs etc = 3 Years Guarantee time for all the products from our factory
Strong Production Ability34 injecting machine,15 production line make sure 150000 sets Plastic gearbox/day.
Our Company Factory8000 square meters of workshop area, strong produce and assemble ability. 120000sets/dayWorkshop34 Injection Molding Machines, also have Wire Cutting Machine, EDM, Precision Lathe, Hobbing Machine.
WarehouseLarge and independent storage space
TeamTop class expers & scholars to do designs and ProductionPacking & Delivery Packing: 200pcs or 600pcs in a waterproof PO bag then in 1 carton. we can do packing according to customer’s requirement.
Our Certifications We have ISO9001 CERTIFICATION. We have lots of Patent certificate such as for Fan Gearbox, auto brush gearbox, bike adjusting seat, and coffer maker gearbox.
Customer PhotoFavorable CommentWe have been working together for 7 years.
Skilltrans factory is It’s a trustworthy factory.
Favorable CommentFive years of cooperation is very pleasant, from raw materials to products Skilltrans factory have strict quality control system, best is their delivery time is stable.
Favorable CommentWe have cooperated for 9 years and have become good friends. We will continue to cooperate.
FAQ1, Why choose us?12years experience of plastic gearbox making factoryReal manufacturer can guarantee on time delivery & low costFast & 18001810 Series Heavy Duty Drive Shaft Center Support Bearing 210661-1X Fit For Freightliner Trucks professional reply, latest answer is within 24 hours2,Can you do OEM?Yes, 1 of our advantages is we have experts and scholars to do designs, develops. Welcome OEM, ODM3, How long is guarantee time?3 years for all the products,not contain artificial damage4, Can we get sample?Yes, usually sample is free, we need you cooperate to pay shipping charges5, How can you control the quality?We have gear measuring center, CMMs and other inspection equipment,All the products need pass 100% check before delivery.6, Can you do our packing and delivery time?Yes, usually our packing is 1 piece in 1 bag,600pcs in 1 carton. delivery time is 20-28days7,How to pay?Usually 30% deposit,the rest paid before shipment

How to Select a Worm Shaft and Gear For Your Project

You will learn about axial pitch PX and tooth parameters for a Worm Shaft 20 and Gear 22. Detailed information on these two components will help you select a suitable Worm Shaft. Read on to learn more….and get your hands on the most advanced gearbox ever created! Here are some tips for selecting a Worm Shaft and Gear for your project!…and a few things to keep in mind.
worm shaft

Gear 22

The tooth profile of Gear 22 on Worm Shaft 20 differs from that of a conventional gear. This is because the teeth of Gear 22 are concave, allowing for better interaction with the threads of the worm shaft 20. The worm’s lead angle causes the worm to self-lock, preventing reverse motion. However, this self-locking mechanism is not entirely dependable. Worm gears are used in numerous industrial applications, from elevators to fishing reels and automotive power steering.
The new gear is installed on a shaft that is secured in an oil seal. To install a new gear, you first need to remove the old gear. Next, you need to unscrew the two bolts that hold the gear onto the shaft. Next, you should remove the bearing carrier from the output shaft. Once the worm gear is removed, you need to unscrew the retaining ring. After that, install the bearing cones and the shaft spacer. Make sure that the shaft is tightened properly, but do not over-tighten the plug.
To prevent premature failures, use the right lubricant for the type of worm gear. A high viscosity oil is required for the sliding action of worm gears. In two-thirds of applications, lubricants were insufficient. If the worm is lightly loaded, a low-viscosity oil may be sufficient. Otherwise, a high-viscosity oil is necessary to keep the worm gears in good condition.
Another option is to vary the number of teeth around the gear 22 to reduce the output shaft’s speed. This can be done by setting a specific ratio (for example, five or ten times the motor’s speed) and modifying the worm’s dedendum accordingly. This process will reduce the output shaft’s speed to the desired level. The worm’s dedendum should be adapted to the desired axial pitch.

Worm Shaft 20

When selecting a worm gear, consider the following things to consider. These are high-performance, low-noise gears. They are durable, low-temperature, and long-lasting. Worm gears are widely used in numerous industries and have numerous benefits. Listed below are just some of their benefits. Read on for more information. Worm gears can be difficult to maintain, but with proper maintenance, they can be very reliable.
The worm shaft is configured to be supported in a frame 24. The size of the frame 24 is determined by the center distance between the worm shaft 20 and the output shaft 16. The worm shaft and gear 22 may not come in contact or interfere with one another if they are not configured properly. For these reasons, proper assembly is essential. However, if the worm shaft 20 is not properly installed, the assembly will not function.
Another important consideration is the worm material. Some worm gears have brass wheels, which may cause corrosion in the worm. In addition, sulfur-phosphorous EP gear oil activates on the brass wheel. These materials can cause significant loss of load surface. Worm gears should be installed with high-quality lubricant to prevent these problems. There is also a need to choose a material that is high-viscosity and has low friction.
Speed reducers can include many different worm shafts, and each speed reducer will require different ratios. In this case, the speed reducer manufacturer can provide different worm shafts with different thread patterns. The different thread patterns will correspond to different gear ratios. Regardless of the gear ratio, each worm shaft is manufactured from a blank with the desired thread. It will not be difficult to find one that fits your needs.
worm shaft

Gear 22’s axial pitch PX

The axial pitch of a worm gear is calculated by using the nominal center distance and the Addendum Factor, a constant. The Center Distance is the distance from the center of the gear to the worm wheel. The worm wheel pitch is also called the worm pitch. Both the dimension and the pitch diameter are taken into consideration when calculating the axial pitch PX for a Gear 22.
The axial pitch, or lead angle, of a worm gear determines how effective it is. The higher the lead angle, the less efficient the gear. Lead angles are directly related to the worm gear’s load capacity. In particular, the angle of the lead is proportional to the length of the stress area on the worm wheel teeth. A worm gear’s load capacity is directly proportional to the amount of root bending stress introduced by cantilever action. A worm with a lead angle of g is almost identical to a helical gear with a helix angle of 90 deg.
In the present invention, an improved method of manufacturing worm shafts is described. The method entails determining the desired axial pitch PX for each reduction ratio and frame size. The axial pitch is established by a method of manufacturing a worm shaft that has a thread that corresponds to the desired gear ratio. A gear is a rotating assembly of parts that are made up of teeth and a worm.
In addition to the axial pitch, a worm gear’s shaft can also be made from different materials. The material used for the gear’s worms is an important consideration in its selection. Worm gears are usually made of steel, which is stronger and corrosion-resistant than other materials. They also require lubrication and may have ground teeth to reduce friction. In addition, worm gears are often quieter than other gears.

Gear 22’s tooth parameters

A study of Gear 22’s tooth parameters revealed that the worm shaft’s deflection depends on various factors. The parameters of the worm gear were varied to account for the worm gear size, pressure angle, and size factor. In addition, the number of worm threads was changed. These parameters are varied based on the ISO/TS 14521 reference gear. This study validates the developed numerical calculation model using experimental results from Lutz and FEM calculations of worm gear shafts.
Using the results from the Lutz test, we can obtain the deflection of the worm shaft using the calculation method of ISO/TS 14521 and DIN 3996. The calculation of the bending diameter of a worm shaft according to the formulas given in AGMA 6022 and DIN 3996 show a good correlation with test results. However, the calculation of the worm shaft using the root diameter of the worm uses a different parameter to calculate the equivalent bending diameter.
The bending stiffness of a worm shaft is calculated through a finite element model (FEM). Using a FEM simulation, the deflection of a worm shaft can be calculated from its toothing parameters. The deflection can be considered for a complete gearbox system as stiffness of the worm toothing is considered. And finally, based on this study, a correction factor is developed.
For an ideal worm gear, the number of thread starts is proportional to the size of the worm. The worm’s diameter and toothing factor are calculated from Equation 9, which is a formula for the worm gear’s root inertia. The distance between the main axes and the worm shaft is determined by Equation 14.
worm shaft

Gear 22’s deflection

To study the effect of toothing parameters on the deflection of a worm shaft, we used a finite element method. The parameters considered are tooth height, pressure angle, size factor, and number of worm threads. Each of these parameters has a different influence on worm shaft bending. Table 1 shows the parameter variations for a reference gear (Gear 22) and a different toothing model. The worm gear size and number of threads determine the deflection of the worm shaft.
The calculation method of ISO/TS 14521 is based on the boundary conditions of the Lutz test setup. This method calculates the deflection of the worm shaft using the finite element method. The experimentally measured shafts were compared to the simulation results. The test results and the correction factor were compared to verify that the calculated deflection is comparable to the measured deflection.
The FEM analysis indicates the effect of tooth parameters on worm shaft bending. Gear 22’s deflection on Worm Shaft can be explained by the ratio of tooth force to mass. The ratio of worm tooth force to mass determines the torque. The ratio between the two parameters is the rotational speed. The ratio of worm gear tooth forces to worm shaft mass determines the deflection of worm gears. The deflection of a worm gear has an impact on worm shaft bending capacity, efficiency, and NVH. The continuous development of power density has been achieved through advancements in bronze materials, lubricants, and manufacturing quality.
The main axes of moment of inertia are indicated with the letters A-N. The three-dimensional graphs are identical for the seven-threaded and one-threaded worms. The diagrams also show the axial profiles of each gear. In addition, the main axes of moment of inertia are indicated by a white cross.

China Best Sales SKILLTRANS Guangdong PA46 double plastic worm gears left hand Helical gears  with Good qualityChina Best Sales SKILLTRANS Guangdong PA46 double plastic worm gears left hand Helical gears  with Good quality

in Khabarovsk Russian Federation sales price shop near me near me shop factory supplier Donly High Efficiency Dls Series Helical Worm Gear manufacturer best Cost Custom Cheap wholesaler

  in Khabarovsk Russian Federation  sales   price   shop   near me   near me shop   factory   supplier Donly High Efficiency Dls Series Helical Worm Gear manufacturer   best   Cost   Custom   Cheap   wholesaler

Our solution assortment also covers locking assemblies (clamping elements/locking gadget), taper bushes, QD bushes, bolt-on hubs, torque limiters, shaft collars, motor bases and motor slides, chain detachers, chain guides, universal joint, rod ends and yokes. EPG is a skilled producer and exporter that is concerned with the layout, growth and manufacturing. We can source a full-selection of electricity transmission items like chains, sprockets and plate wheels, pulleys, gearboxes, motors, couplings, gears and racks.

S sequence EPTcal Worm EPTT

1. Standard Details:

EPT EPT Minimal carbon substantial alloy steel
Heat treatment Carburising, Quenching, EPT EPT
Lubricant CLP (CC) VG220
Ambient Temperature -ten ordmC~40 ordmC

two. Bundle and Supply:

All Types: EPTen Bundle
Supply: About two weeks following obtaining the EPTd payment.

3. Characteristics and Benefits

one) Adopt quotmodule blend quot design.It can be transformed out of tens of tens of millions of types of quotmodule quot assembled by the EPTT, any consumer of any demand from customers, can be a limited time to acquire the maXiHu (West EPT) Dis.mum satisfaction.
2) Two helical EPTTes merged with a motor (a multistage EPTT) can achieve really lower output speed
three) EPT EPTT precision, eEPTTly ideal for regular starting up instances, can be connected to all sorts of EPTT and configuration of a variety of varieties of motor EPT
four) Far more ratios fulfill the need of exact output pace.
five) EPTmotor can be provided for either horizontal or vertical set up in 6 angle.
6) Undertake two or three EPT reduction, by the motor EPT higher – pace amount EPTT EPTT.The input cEPTTr line is pXiHu (West EPT) Dis.Hu (West EPT) Dis.lel to the output cEPTTr line
seven) This collection of EPTT can be geared up with various types of motors, forming the EPTT integration, completely make sure the high quality traits of the product
8) Elevated EPTT capability,reduce sound and higher performance by grinding and modifying EPTs.

four. Product Variety

5. Torque arm and position

DLSAT, DLSEPTT EPT models and EPTmotors can be put in with torque arm. The positions designation as adhering to:

six. Position of Output shaft and output flange

seven. Mounting Placement

DONLY differentiates among six mounting positions M1…M6 for EPT units and EPTmotors. The following determine displays the situation of the EPT unit in mounting positions M1-M6.

eight. Place of terminal box and cable entry

The placement of the motor terminal box has so much been specified indicated with L(remaining), R(right), T(leading) or B(bottom) as seen onto the output shaft.

The placement of the cable entry can be picked as nicely. The positions are equivalent to stXiHu (West EPT) Dis.Hu (West EPT) Dis.rd placement, quot1 quot, quot2 quotor quot3 quot.

          nine. EPT Adaptor Choice

          ten. Package deal Photos

          11. FAQ

          1) What varieties of EPTT can you generate for us.

          A: Main merchandise of our company: Modular EPTmotor R,F,K,S. EPT EPT Modular EPTT H,B,P,HK. A few-Phase Asynronous EPT. Customerized EPTT.

          2) Can you make as for each custom made drawing?

          A: Yes, we offer you EPT provider for customers.

          three) What is your terms of payment?

          A: 30% EPTd payment by T/T after signing the deal. 70% ahead of shipping.

            in Khabarovsk Russian Federation  sales   price   shop   near me   near me shop   factory   supplier Donly High Efficiency Dls Series Helical Worm Gear manufacturer   best   Cost   Custom   Cheap   wholesaler

            in Khabarovsk Russian Federation  sales   price   shop   near me   near me shop   factory   supplier Donly High Efficiency Dls Series Helical Worm Gear manufacturer   best   Cost   Custom   Cheap   wholesaler