China Hot selling CHINAMFG Drive Worm Gearbox Shaft Input Nrv Series

Product Description

RV series Characteristics

  • RV – Sizes:–150
  • Input Options: with input shaft, With Square flange,With Input Flange
  • Input Power 0.06 to 11 kW
  • RV-Size from 030 to 105 in die-cast aluminium alloy budy and over 110 in cast iron
  • Ratios between 5 and 100
  • Max torque 1550 N.m and admissible output radial loads max 8771 N
  • Aluminium units are supplied complete with synthetic oil and allow for universal mounting positions, with no need to modify lubricant quantity
  • Worm wheel: Copper (KK Cu). 
  • Loading capacity in accordance with: ISO 9001:2015/GB/T 19001-2016
  • Size 030 and over are painted with RAL 5571 blue
  • Worm gear reducers are available with diffferent combinations: NMRV+NMRV, NMRVpower+NMRV, JWB+NMRV
  • Options: torque arm, output flange, viton oil seals, low/high temperature oil, filling/drain/breather/level plug,Small gap

Basic models can be applied to a wide range of power reduction ratios from 5 to 1000.
Warranty: One year from date of delivery.


WORM GEARBOX          
SNW SERIES          Output Speed Range:
Type Old Type Output Torque Output Shaft Dia.   14rpm-280rpm
SNW030  RV030  21N.m  φ14   Applicable Motor Power:
SNW040  RV040  45N.m  φ19   0.06kW-11kW
SNW050  RV050  84N.m  φ25   Input Options1:
SNW063  RV063  160N.m  φ25   With Inline AC Motor
SNW075  RV075  230N.m  φ28   Input Options2:
SNW090  RV090  410N.m  φ35   With Square flange
SNW105  RV105  630N.m  φ42   Input Options3:
SNW110  RV110  725N.m  φ42   With Input Shaft
SNW130  RV130  1050N.m  φ45   Input Options4:
SNW150  RV150  1550N.m  φ50   With Input Flange

Starshine Drive

ZheJiang CZPT Drive Co.,Ltd,the predecessor was a state-owned military mould enterprise, was established in 1965. CZPT specializes in the complete power transmission solution for high-end equipment manufacturing industries based on the aim of “Platform Product, Application Design and Professional Service”.
Starshine have a strong technical force with over 350 employees at present, including over 30 engineering technicians, 30 quality inspectors, covering an area of 80000 square CZPT and kinds of advanced processing machines and testing equipments. We have a good foundation for the industry application development and service of high-end speed reducers & variators owning to the provincial engineering technology research center,the lab of gear speed reducers, and the base of modern R&D.

Our Team

Quality Control
Quality:Insist on Improvement,Strive for Excellence With the development of equipment manufacturing indurstry,customer never satirsfy with the current quality of our products,on the contrary,wcreate the value of quality.
Quality policy:to enhance the overall level in the field of power transmission  
Quality View:Continuous Improvement , pursuit of excellence
Quality Philosophy:Quality creates value

3. Incoming Quality Control
To establish the AQL acceptable level of incoming material control, to provide the material for the whole inspection, sampling, immunity. On the acceptance of qualified products to warehousing, substandard goods to take return, check, rework, rework inspection; responsible for tracking bad, to monitor the supplier to take corrective measures
 to prevent recurrence.

4. Process Quality Control
The manufacturing site of the first examination, inspection and final inspection, sampling according to the requirements of some projects, judging the quality change trend;
 found abnormal phenomenon of manufacturing, and supervise the production department to improve, eliminate the abnormal phenomenon or state.

5. FQC(Final QC)
After the manufacturing department will complete the product, stand in the customer’s position on the finished product quality verification, in order to ensure the quality of 
customer expectations and needs.

6. OQC(Outgoing QC)
After the product sample inspection to determine the qualified, allowing storage, but when the finished product from the warehouse before the formal delivery of the goods, there is a check, this is called the shipment inspection.Check content:In the warehouse storage and transfer status to confirm, while confirming the delivery of the product
 is a product inspection to determine the qualified products.



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Application: Motor, Machinery, Industry
Function: Distribution Power, Change Drive Torque, Speed Changing, Speed Reduction
Layout: Vertical
Hardness: Hardened
Installation: Torque
Step: Three-Step


Customized Request

pto shaft

Are there any limitations or disadvantages associated with drive shafts?

While drive shafts are widely used and offer several advantages, they also have certain limitations and disadvantages that should be considered. Here’s a detailed explanation of the limitations and disadvantages associated with drive shafts:

1. Length and Misalignment Constraints:

Drive shafts have a maximum practical length due to factors such as material strength, weight considerations, and the need to maintain rigidity and minimize vibrations. Longer drive shafts can be prone to increased bending and torsional deflection, leading to reduced efficiency and potential driveline vibrations. Additionally, drive shafts require proper alignment between the driving and driven components. Misalignment can cause increased wear, vibrations, and premature failure of the drive shaft or its associated components.

2. Limited Operating Angles:

Drive shafts, especially those using U-joints, have limitations on operating angles. U-joints are typically designed to operate within specific angular ranges, and operating beyond these limits can result in reduced efficiency, increased vibrations, and accelerated wear. In applications requiring large operating angles, constant velocity (CV) joints are often used to maintain a constant speed and accommodate greater angles. However, CV joints may introduce higher complexity and cost compared to U-joints.

3. Maintenance Requirements:

Drive shafts require regular maintenance to ensure optimal performance and reliability. This includes periodic inspection, lubrication of joints, and balancing if necessary. Failure to perform routine maintenance can lead to increased wear, vibrations, and potential driveline issues. Maintenance requirements should be considered in terms of time and resources when using drive shafts in various applications.

4. Noise and Vibration:

Drive shafts can generate noise and vibrations, especially at high speeds or when operating at certain resonant frequencies. Imbalances, misalignment, worn joints, or other factors can contribute to increased noise and vibrations. These vibrations may affect the comfort of vehicle occupants, contribute to component fatigue, and require additional measures such as dampers or vibration isolation systems to mitigate their effects.

5. Weight and Space Constraints:

Drive shafts add weight to the overall system, which can be a consideration in weight-sensitive applications, such as automotive or aerospace industries. Additionally, drive shafts require physical space for installation. In compact or tightly packaged equipment or vehicles, accommodating the necessary drive shaft length and clearances can be challenging, requiring careful design and integration considerations.

6. Cost Considerations:

Drive shafts, depending on their design, materials, and manufacturing processes, can involve significant costs. Customized or specialized drive shafts tailored to specific equipment requirements may incur higher expenses. Additionally, incorporating advanced joint configurations, such as CV joints, can add complexity and cost to the drive shaft system.

7. Inherent Power Loss:

Drive shafts transmit power from the driving source to the driven components, but they also introduce some inherent power loss due to friction, bending, and other factors. This power loss can reduce overall system efficiency, particularly in long drive shafts or applications with high torque requirements. It is important to consider power loss when determining the appropriate drive shaft design and specifications.

8. Limited Torque Capacity:

While drive shafts can handle a wide range of torque loads, there are limits to their torque capacity. Exceeding the maximum torque capacity of a drive shaft can lead to premature failure, resulting in downtime and potential damage to other driveline components. It is crucial to select a drive shaft with sufficient torque capacity for the intended application.

Despite these limitations and disadvantages, drive shafts remain a widely used and effective means of power transmission in various industries. Manufacturers continuously work to address these limitations through advancements in materials, design techniques, joint configurations, and balancing processes. By carefully considering the specific application requirements and potential drawbacks, engineers and designers can mitigate the limitations and maximize the benefits of drive shafts in their respective systems.

pto shaft

Can you provide real-world examples of vehicles and machinery that use drive shafts?

Drive shafts are widely used in various vehicles and machinery to transmit power from the engine or power source to the wheels or driven components. Here are some real-world examples of vehicles and machinery that utilize drive shafts:

1. Automobiles:

Drive shafts are commonly found in automobiles, especially those with rear-wheel drive or four-wheel drive systems. In these vehicles, the drive shaft transfers power from the transmission or transfer case to the rear differential or front differential, respectively. This allows the engine’s power to be distributed to the wheels, propelling the vehicle forward.

2. Trucks and Commercial Vehicles:

Drive shafts are essential components in trucks and commercial vehicles. They are used to transfer power from the transmission or transfer case to the rear axle or multiple axles in the case of heavy-duty trucks. Drive shafts in commercial vehicles are designed to handle higher torque loads and are often larger and more robust than those used in passenger cars.

3. Construction and Earthmoving Equipment:

Various types of construction and earthmoving equipment, such as excavators, loaders, bulldozers, and graders, rely on drive shafts for power transmission. These machines typically have complex drivetrain systems that use drive shafts to transfer power from the engine to the wheels or tracks, enabling them to perform heavy-duty tasks on construction sites or in mining operations.

4. Agricultural Machinery:

Agricultural machinery, including tractors, combines, and harvesters, utilize drive shafts to transmit power from the engine to the wheels or driven components. Drive shafts in agricultural machinery are often subjected to demanding conditions and may have additional features such as telescopic sections to accommodate variable distances between components.

5. Industrial Machinery:

Industrial machinery, such as manufacturing equipment, generators, pumps, and compressors, often incorporate drive shafts in their power transmission systems. These drive shafts transfer power from electric motors, engines, or other power sources to various driven components, enabling the machinery to perform specific tasks in industrial settings.

6. Marine Vessels:

In marine applications, drive shafts are commonly used to transmit power from the engine to the propeller in boats, ships, and other watercraft. Marine drive shafts are typically longer and designed to withstand the unique challenges posed by water environments, including corrosion resistance and appropriate sealing mechanisms.

7. Recreational Vehicles (RVs) and Motorhomes:

RVs and motorhomes often employ drive shafts as part of their drivetrain systems. These drive shafts transfer power from the transmission to the rear axle, allowing the vehicle to move and providing propulsion. Drive shafts in RVs may have additional features such as dampers or vibration-reducing components to enhance comfort during travel.

8. Off-Road and Racing Vehicles:

Off-road vehicles, such as SUVs, trucks, and all-terrain vehicles (ATVs), as well as racing vehicles, frequently utilize drive shafts. These drive shafts are designed to withstand the rigors of off-road conditions or high-performance racing, transmitting power efficiently to the wheels and ensuring optimal traction and performance.

9. Railway Rolling Stock:

In railway systems, drive shafts are employed in locomotives and some types of rolling stock. They transfer power from the locomotive’s engine to the wheels or propulsion system, enabling the train to move along the tracks. Railway drive shafts are typically much longer and may have additional features to accommodate the articulated or flexible nature of some train configurations.

10. Wind Turbines:

Large-scale wind turbines used for generating electricity incorporate drive shafts in their power transmission systems. The drive shafts transfer rotational energy from the turbine’s blades to the generator, where it is converted into electrical power. Drive shafts in wind turbines are designed to handle the significant torque and rotational forces generated by the wind.

These examples demonstrate the broad range of vehicles and machinery that rely on drive shafts for efficient power transmission and propulsion. Drive shafts are essential components in various industries, enabling the transfer of power from the source to the driven components, ultimately facilitating movement, operation, or the performance of specific tasks.

pto shaft

Are there variations in drive shaft designs for different types of machinery?

Yes, there are variations in drive shaft designs to cater to the specific requirements of different types of machinery. The design of a drive shaft is influenced by factors such as the application, power transmission needs, space limitations, operating conditions, and the type of driven components. Here’s an explanation of how drive shaft designs can vary for different types of machinery:

1. Automotive Applications:

In the automotive industry, drive shaft designs can vary depending on the vehicle’s configuration. Rear-wheel-drive vehicles typically use a single-piece or two-piece drive shaft, which connects the transmission or transfer case to the rear differential. Front-wheel-drive vehicles often use a different design, employing a drive shaft that combines with the constant velocity (CV) joints to transmit power to the front wheels. All-wheel-drive vehicles may have multiple drive shafts to distribute power to all wheels. The length, diameter, material, and joint types can differ based on the vehicle’s layout and torque requirements.

2. Industrial Machinery:

Drive shaft designs for industrial machinery depend on the specific application and power transmission requirements. In manufacturing machinery, such as conveyors, presses, and rotating equipment, drive shafts are designed to transfer power efficiently within the machine. They may incorporate flexible joints or use a splined or keyed connection to accommodate misalignment or allow for easy disassembly. The dimensions, materials, and reinforcement of the drive shaft are selected based on the torque, speed, and operating conditions of the machinery.

3. Agriculture and Farming:

Agricultural machinery, such as tractors, combines, and harvesters, often requires drive shafts that can handle high torque loads and varying operating angles. These drive shafts are designed to transmit power from the engine to attachments and implements, such as mowers, balers, tillers, and harvesters. They may incorporate telescopic sections to accommodate adjustable lengths, flexible joints to compensate for misalignment during operation, and protective shielding to prevent entanglement with crops or debris.

4. Construction and Heavy Equipment:

Construction and heavy equipment, including excavators, loaders, bulldozers, and cranes, require robust drive shaft designs capable of transmitting power in demanding conditions. These drive shafts often have larger diameters and thicker walls to handle high torque loads. They may incorporate universal joints or CV joints to accommodate operating angles and absorb shocks and vibrations. Drive shafts in this category may also have additional reinforcements to withstand the harsh environments and heavy-duty applications associated with construction and excavation.

5. Marine and Maritime Applications:

Drive shaft designs for marine applications are specifically engineered to withstand the corrosive effects of seawater and the high torque loads encountered in marine propulsion systems. Marine drive shafts are typically made from stainless steel or other corrosion-resistant materials. They may incorporate flexible couplings or dampening devices to reduce vibration and mitigate the effects of misalignment. The design of marine drive shafts also considers factors such as shaft length, diameter, and support bearings to ensure reliable power transmission in marine vessels.

6. Mining and Extraction Equipment:

In the mining industry, drive shafts are used in heavy machinery and equipment such as mining trucks, excavators, and drilling rigs. These drive shafts need to withstand extremely high torque loads and harsh operating conditions. Drive shaft designs for mining applications often feature larger diameters, thicker walls, and specialized materials such as alloy steel or composite materials. They may incorporate universal joints or CV joints to handle operating angles, and they are designed to be resistant to abrasion and wear.

These examples highlight the variations in drive shaft designs for different types of machinery. The design considerations take into account factors such as power requirements, operating conditions, space constraints, alignment needs, and the specific demands of the machinery or industry. By tailoring the drive shaft design to the unique requirements of each application, optimal power transmission efficiency and reliability can be achieved.

China Hot selling CHINAMFG Drive Worm Gearbox Shaft Input Nrv Series  China Hot selling CHINAMFG Drive Worm Gearbox Shaft Input Nrv Series
editor by CX 2024-03-07