Calculating Torque Requirements for an NMRV Gearbox

Calculating torque requirements for an NMRV gearbox involves several steps: Identify Input Torque, Calculate Output Torque, Consider Efficiency, and Add Safety Margin.

1. Identify Input Torque: Determine the input torque required by the application, taking into account factors such as load, speed, and efficiency.
2. Calculate Output Torque: Use the gear ratio of the NMRV gearbox to calculate the output torque needed to achieve the desired output speed.
3. Consider Efficiency: Take into account the efficiency of the NMRV gearbox. The actual output torque will be influenced by the gearbox’s mechanical efficiency.
4. Add Safety Margin: To ensure reliable performance and account for variations in operating conditions, it’s recommended to add a safety margin to the calculated torque requirements.

Formula to calculate output torque: Output Torque = Input Torque × Gear Ratio × Gearbox Efficiency

Keep in mind that torque requirements can vary based on the specific application and factors such as load type, duty cycle, and environmental conditions. Consulting with gearbox manufacturers or engineering experts can help ensure accurate torque calculations for your NMRV gearbox application.

Design Principles of an NMRV Gearbox

The design of an NMRV (worm gear) gearbox is based on key principles that enable its efficient and reliable operation:

• Worm Gear Mechanism: The core of an NMRV gearbox is the worm screw and worm wheel. The worm screw, typically cylindrical in shape, meshes with the teeth of the worm wheel. This configuration provides high gear reduction ratios.
• Helical Gearing: The worm screw is usually helical, allowing for smoother engagement with the worm wheel. Helical gearing reduces the sliding friction and noise associated with traditional straight-cut worm gears.
• Compact Design: NMRV gearboxes are designed to be compact, often with a right-angle configuration. This allows for efficient use of space in various applications.
• Alloy Construction: Many NMRV gearboxes are constructed from high-quality alloys, providing durability and corrosion resistance. The choice of materials ensures a gearbox capable of withstanding varying loads and environmental conditions.
• Bearing Support: Bearings support the rotating elements within the gearbox, reducing friction and ensuring smooth operation. Bearings are strategically placed to handle radial and axial loads.
• Sealing and Lubrication: NMRV gearboxes are equipped with effective sealing mechanisms to prevent the entry of contaminants and to retain lubricating oil. Proper lubrication is essential for reducing wear and enhancing gearbox efficiency.
• Efficient Power Transmission: The worm gear mechanism in NMRV gearboxes provides high gear reduction ratios, allowing for efficient power transmission while minimizing energy losses.
• Quiet Operation: The helical design of the worm screw and worm wheel contributes to quieter operation compared to traditional straight-cut worm gears.
• Wide Range of Ratios: NMRV gearboxes are available in various gear ratios, allowing users to select the appropriate configuration for their specific application needs.

The combination of these design principles results in an NMRV gearbox that offers efficient, reliable, and quiet power transmission for a wide range of industrial applications.

Key Features of an NMRV Gearbox

NMRV gearboxes, also known as worm gear reducers, offer several key features that make them suitable for various applications:

• Compact Design: NMRV gearboxes are known for their compact and space-saving design, making them ideal for installations with limited space.
• High Efficiency: These gearboxes offer relatively high efficiency levels, which ensures efficient power transmission and reduced energy loss.
• Speed Reduction: NMRV gearboxes are primarily used for speed reduction applications, where the input speed is reduced while torque is increased.
• Torque Multiplication: The worm and worm wheel mechanism allows for torque multiplication, making NMRV gearboxes suitable for applications requiring high torque output.
• Self-Locking: The helical design of the worm causes self-locking, preventing the output shaft from back-driving the input shaft and providing mechanical locking.
• Smooth Operation: NMRV gearboxes offer smooth and quiet operation, making them suitable for applications where noise reduction is important.
• Wide Range of Ratios: These gearboxes come in a wide range of gear ratios, allowing users to select the appropriate ratio for their specific application.
• Low Maintenance: The simple design and few moving parts contribute to the low maintenance requirements of NMRV gearboxes.
• Versatility: NMRV gearboxes are versatile and can be used in various industries and applications, including conveyor systems, food processing, packaging, and more.

It’s important to consider these key features when selecting an NMRV gearbox for your specific application to ensure optimal performance and efficiency.

editor by CX 2023-12-15

Product Description

Descriptions: NMRV63 worm gear speed reducer Ratio 20:1
 
Product Paramenters:
Step angle:1.8° Temperature rise:below 80 ºC
Ambient temperature:-20 ºC ~ + 50 ºC
Insulation resistance:minimum 100MΩ, 500VDC
Dielectric strength:820VAC for 1 minute
Shaft radial clearance 0.02 max (450 g load)
Shaft axial clearance:0.08Max. (450 g load)
Maximum radial force:220N (20mm from flange)
Maximum axial force:60N

 

Model Name: JK86HS78-5504 

Step Angle(degrees):1.8Degree 

Model Number:NEMA34

Phase:2 

Type:Hybrid 

Current / Phase:5.5A 

Resistance:0.46Ω 

Inductance:4mH 

Holding Torque:4.5N.m 

Motor length:78mm 

Number of leads: 4leads

Shaft Dia: 12mm or 12.7mm

Shaft Type: Round Shaft or D-cut Shaft

Model Name: JK86HS115-6004
Step Angle(degrees):1.8Degree
Model Number:NEMA34
Phase:2
Type:Hybrid
Current / Phase:6A
Resistance:0.6Ω
Inductance:6.5mH
Holding Torque:8.5N.m
Motor length:115mm

Number of leads: 4leads 

 

Model Name: JK86HS155-6004
Step Angle(degrees):1.8Degree
Model Number:NEMA34
Phase:2
Type:Hybrid
Current / Phase:6A
Resistance:1Ω
Inductance:0.68mH
Holding Torque:12.5N.m
Motor length:155mm
Number of leads: 4leads

Detailed Image:

 

Company File:

   

WHY YOU CHOOSE US:

We are a professional manufacturer for Stepper motor , Stepper driver, BLDC motor and DC motor. we can supply OEM service.  
Our products all with CE and ROHS. 
Welcome you visit our company HangZhou Jingkong Motor&Electric Appliance Co.,Ltd 
 
Depending on advanced technology and CZPT service, we establish a good and diligent team and keep nice business relationship with a large amount of worthy clients in global market. We are prepared to provide the best products to clients at competitive price. 

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Believe that we will do our best!

Model No.	Step Angle	Motor Length	Current /Phase	Resistance /Phase	Inductance /Phase	Holding Torque	# of Leads	Detent Torque	Rotor Inertia	Mass
	( °)	(L)mm	A	Ω	mH	N.m	No.	kg.cm	g.cm2	Kg
JK86HS68-5904	1.8	67	5.9	0.28	1.7	3.4	4	0.8	1000	1.7
JK86HS68-2808	1.8	67	2.8	1.4	3.9	3.4	8	0.8	1000	1.7
JK86HS78-5504	1.8	78	5.5	0.46	4.0	4.6	4	1.2	1400	2.3
JK86HS78-4208	1.8	78	4.2	0.75	3.4	4.6	8	1.2	1400	2.3
JK86HS97-4504	1.8	97	4.5	0.66	3.0	5.8	4	1.7	2100	3.0
JK86HS97-4008	1.8	97	4.0	0.98	4.1	4.7	8	1.7	2100	3.0
JK86HS100-6004	1.8	100	6.0	0.36	2.8	7.0	4	1.9	2200	3.1
JK86HS115-6004	1.8	115	6.0	0.6	6.5	8.7	4	2.4	2700	3.8
JK86HS115-4208	1.8	115	4.2	0.9	6.0	8.7	8	2.4	2700	3.8
JK86HS126-6004	1.8	126	6.0	0.58	6.5	6.3	4	2.9	3200	4.5
JK86HS155-6004	1.8	155	6.0	0.68	9.0	13.0	4	3.6	4000	5.4
JK86HS155-4208	1.8	155	4.2	1.25	8.0	12.2	8	3.6	4000	5.4

 

HangZhou Jingkong Motor Co.,Ltd

 

 
 

 

 

 

Using NMRV Gearboxes in High-Load Applications

NMRV gearboxes can be used in moderate to high-load applications, but their load capacity is generally limited compared to some other gearbox types. They are best suited for applications with light to moderate loads, such as conveyor systems, packaging equipment, and small machinery. It’s important to consider the specific load requirements and consult with gearbox manufacturers or engineers to ensure the chosen NMRV gearbox can handle the intended application’s load demands.

Common Problems Associated with NMRV Gearboxes

NMRV (worm gear) gearboxes are reliable and durable, but like any mechanical system, they can experience certain issues over time. Here are some common problems that can be associated with NMRV gearboxes:

• Overheating: Inadequate lubrication or excessive load can lead to overheating, causing accelerated wear and potential damage to the gearbox components.
• Noise and Vibration: Unusual noises or excessive vibration during operation could indicate misalignment, worn gears, or damaged bearings.
• Leakage: Oil leaks can occur due to worn seals or damaged gaskets, leading to lubricant loss and potential contamination of the surrounding environment.
• Worn Gears: Over time, gear teeth can wear down due to friction and load. This can result in reduced efficiency, increased backlash, and compromised performance.
• Misalignment: Improper installation or mounting can lead to misalignment between the input and output shafts, causing increased friction, wear, and reduced efficiency.
• Backlash: Excessive backlash between the worm gear and the mating gear can lead to poor positioning accuracy and reduced efficiency in motion control applications.
• Poor Lubrication: Using incorrect or inadequate lubricants, or neglecting proper lubrication maintenance, can lead to increased friction, wear, and potential failure of gearbox components.
• Seal Damage: Worn or damaged seals can result in oil leaks and contamination, affecting the performance and lifespan of the gearbox.
• Shaft Wear: Over time, the input and output shafts can experience wear due to load and friction, affecting the overall operation of the gearbox.
• Corrosion: Exposure to harsh environments or corrosive substances can lead to corrosion of gearbox components, reducing their lifespan.

To prevent and address these common problems, it’s crucial to follow proper maintenance and servicing practices, use high-quality lubricants, address issues promptly, and consult professionals when needed. Regular inspections and proactive maintenance can help extend the operational lifespan and reliability of NMRV gearboxes.

Application:	Printing Equipment
Speed:	High Speed
Number of Stator:	Two-Phase
Excitation Mode:	HB-Hybrid
Function:	Control, Driving
Number of Poles:	Other

Customization:	Available | Customized Request

Industries Using NMRV Gearboxes

NMRV gearboxes find widespread use in various industries due to their versatility and reliability. Some common industries include:

• Food and Beverage: NMRV gearboxes are used in conveyor systems, mixers, and packaging equipment.
• Material Handling: They are employed in conveyor belts, lifting equipment, and automated material handling systems.
• Automation and Robotics: NMRV gearboxes play a critical role in precise motion control and positioning in robotic systems.
• Textile: They are used in machinery for spinning, weaving, and fabric processing.
• Pharmaceutical: NMRV gearboxes are utilized in pill coating machines, mixers, and other pharmaceutical processing equipment.
• Agriculture: They find applications in irrigation systems, conveyor systems, and various agricultural machinery.
• Packaging: NMRV gearboxes are used in packaging machinery to ensure controlled movement and accuracy.
• Automotive: They are used in automated assembly lines and manufacturing processes in the automotive industry.
• Printing: NMRV gearboxes contribute to precise movement and synchronization in printing machinery.
• Energy: They are employed in wind turbine systems, solar tracking systems, and other renewable energy applications.

The adaptability and efficiency of NMRV gearboxes make them a preferred choice in industries that require reliable and precise power transmission solutions.

editor by CX 2023-08-22