Product Description
Transmission gearbox NMRV040 Aluminum Cast Worm Gearboxes for Industrial Systems Speed Reducing
Input Configurations |
Double or single input shaft (NRV) |
PAM / IEC motor input shaft with circle or square flange (NMRV) |
|
Output Configurations
|
Double or single output shaft |
Output flange |
Technical Data:
Housing material | Cast iron/Ductile iron |
Housing hardness | HBS190-240 |
Gear material | 20CrMnTi alloy steel |
Surface hardness of gears | HRC58°~62 ° |
Gear core hardness | HRC33~40 |
Input / Output shaft material | 42CrMo alloy steel |
Input / Output shaft hardness | HRC25~30 |
Machining precision of gears | accurate grinding, 6~5 Grade |
Lubricating oil | GB L-CKC220-460, Shell Omala220-460 |
Heat treatment | tempering, cementiting, quenching, etc. |
Efficiency | 94%~96% (depends on the transmission stage) |
Noise (MAX) | 60~68dB |
Temp. rise (MAX) | 40°C |
Temp. rise (Oil)(MAX) | 50°C |
Vibration | ≤20µm |
Backlash | ≤20Arcmin |
Brand of bearings | China top brand bearing, HRB/LYC/ZWZ/C&U. Or other brands requested,NSK. |
Brand of oil seal | NAK — ZheJiang or other brands requested |
Main applied for
CHINAMFG and shipping
Hoist and transport
Electric power
Coal mining
Cement and construction
Paper and light industry
Specification
Model |
Motor Input Flange (circle) |
Transmission Ratio |
Power (kw) |
Ratio (i) |
Nominal Torque (Nm) |
|||||||||||||||
PAM / IEC |
Internal Dia. |
Dis. Between Diagonal Screw Holes |
External Dia. |
Width of Key Slot |
5 |
7.5 |
10 |
15 |
20 |
25 |
30 |
40 |
50 |
60 |
80 |
100 |
||||
N |
M |
P |
E |
Diamter of Input Shaft |
||||||||||||||||
NMRV25 |
56B14 |
50 |
65 |
80 |
3 |
9 |
– |
9 |
– |
0.06 |
7.5-60 |
2.6-14 |
||||||||
NMRV30 |
63B5 |
95 |
115 |
140 |
4 |
11 |
– |
0.06-0.18 |
7.5-80 |
2.6-14 |
||||||||||
63B14 |
60 |
75 |
90 |
|||||||||||||||||
56B5 |
80 |
100 |
120 |
3 |
9 |
– |
||||||||||||||
56B14 |
50 |
65 |
80 |
|||||||||||||||||
NMRV40 |
71B5 |
110 |
130 |
160 |
5 |
14 |
– |
0.09-0.37 |
7.5-100 |
11-53 |
||||||||||
71B14 |
70 |
85 |
105 |
|||||||||||||||||
63B5 |
95 |
115 |
140 |
4 |
11 |
|||||||||||||||
63B14 |
60 |
75 |
90 |
|||||||||||||||||
56B5 |
80 |
100 |
120 |
3 |
– |
9 |
||||||||||||||
NMRV50 |
80B5 |
130 |
165 |
200 |
6 |
19 |
– |
0.12-0.75 |
7.5-100 |
21-89 |
||||||||||
80B14 |
80 |
100 |
120 |
|||||||||||||||||
71B5 |
110 |
130 |
160 |
5 |
14 |
– |
||||||||||||||
71B14 |
70 |
85 |
105 |
|||||||||||||||||
63B5 |
95 |
115 |
140 |
4 |
– |
11 |
||||||||||||||
NMRV63 |
90B5 |
130 |
165 |
200 |
8 |
24 |
– |
0.25-1.5 |
7.5-100 |
56-166 |
||||||||||
90B14 |
95 |
115 |
140 |
|||||||||||||||||
80B5 |
130 |
165 |
200 |
6 |
19 |
– |
||||||||||||||
80B14 |
80 |
100 |
120 |
|||||||||||||||||
71B5 |
110 |
130 |
160 |
5 |
– |
14 |
||||||||||||||
71B14 |
70 |
85 |
105 |
|||||||||||||||||
NMRV75 |
100/112B5 |
180 |
215 |
250 |
8 |
– |
28 |
– |
0.55-4 |
7.5-100 |
90-269 |
|||||||||
100/112B14 |
110 |
130 |
160 |
|||||||||||||||||
90B5 |
130 |
165 |
200 |
8 |
24 |
– |
||||||||||||||
90B14 |
95 |
115 |
140 |
|||||||||||||||||
80B5 |
130 |
165 |
200 |
6 |
– |
19 |
||||||||||||||
80B14 |
80 |
100 |
120 |
|||||||||||||||||
71B5 |
110 |
130 |
160 |
– |
– |
14 |
||||||||||||||
NMRV90 |
100/112B5 |
180 |
215 |
250 |
8 |
– |
28 |
– |
0.55-4 |
7.5-100 |
101-458 |
|||||||||
100/112B14 |
110 |
130 |
160 |
|||||||||||||||||
90B5 |
130 |
165 |
200 |
8 |
24 |
– |
||||||||||||||
90B14 |
95 |
115 |
140 |
|||||||||||||||||
80B5 |
130 |
165 |
200 |
6 |
– |
19 |
||||||||||||||
80B14 |
80 |
100 |
120 |
|||||||||||||||||
NMRV110 |
132B5 |
230 |
265 |
300 |
10 |
– |
38 |
– |
1.1-7.5 |
7.5-100 |
242-660 |
|||||||||
132B14 |
130 |
165 |
200 |
– |
||||||||||||||||
100/112B5 |
180 |
215 |
250 |
8 |
28 |
– |
||||||||||||||
90B5 |
130 |
165 |
200 |
– |
24 |
|||||||||||||||
90B14 |
95 |
115 |
140 |
– |
||||||||||||||||
80B5 |
130 |
165 |
200 |
– |
19 |
|||||||||||||||
NMRV130 |
132B5 |
230 |
265 |
300 |
10 |
– |
38 |
– |
2.2-7.5 |
7.5-100 |
333-1596 |
|||||||||
132B14 |
130 |
165 |
200 |
– |
||||||||||||||||
100/112B5 |
180 |
215 |
250 |
8 |
– |
28 |
||||||||||||||
90B5 |
130 |
165 |
200 |
– |
– |
24 |
||||||||||||||
90B14 |
95 |
115 |
140 |
|||||||||||||||||
NMRV150 |
160B5 |
250 |
300 |
350 |
12 |
– |
42 |
– |
2.2-15 |
7.5-100 |
570-1760 |
|||||||||
132B5 |
230 |
265 |
300 |
10 |
– |
38 |
– |
|||||||||||||
132B14 |
130 |
165 |
200 |
– |
||||||||||||||||
100/112B5 |
180 |
215 |
250 |
8 |
– |
28 |
Company profile
Scenario
Packing
FAQ
Q1: I want to buy your products, how can I pay?
A: You can pay via T/T(30%+70%), L/C ,D/P etc.
Q2: How can you guarantee the quality?
A: One year’s warranty against B/L date. If you meet with quality problem, please send us pictures or video to check, we promise to send spare parts or new products to replace. Our guarantee not include inappropriate operation or wrong specification selection.
Q3: How we select models and specifications?
A: You can email us the series code (for example: RC series helical gearbox) as well as requirement details, such as motor power,output speed or ratio, service factor or your application…as much data as possible. If you can supply some pictures or drawings,it is nice.
Q4: If we don’t find what we want on your website, what should we do?
A: We offer 3 options:
1, You can email us the pictures, drawings or descriptions details. We will try to design your products on the basis of our
standard models.
2, Our R&D department is professional for OEM/ODM products by drawing/samples, you can send us samples, we do customized design for your bulk purchasing.
3, We can develop new products if they have good market. We have already developed many items for special using successful, such as special gearbox for agitator, cement conveyor, shoes machines and so on.
Q5: Can we buy 1 pc of each item for quality testing?
A: Yes, we are glad to accept trial order for quality testing.
Q6: How about your product delivery time?
A: Normally for 20’container, it takes 25-30 workdays for RV series worm gearbox, 35-40 workdays for helical gearmotors. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
Application: | Motor, Machinery, Agricultural Machinery |
---|---|
Hardness: | Hardened Tooth Surface |
Installation: | B3,B6,B7,B8,V5,V6 |
Layout: | Coaxial |
Gear Shape: | Cylindrical Gear |
Step: | Single-Step |
Customization: |
Available
| Customized Request |
---|
Can a Worm Gearbox be Used for High-Speed Applications?
Worm gearboxes are generally not recommended for high-speed applications due to their inherent design characteristics. Here’s why:
- Efficiency: Worm gearboxes tend to have lower efficiency compared to other gearbox types, which means they can generate more heat and experience more energy loss at high speeds.
- Heat Generation: The sliding contact between the worm and worm wheel in a worm gearbox can lead to significant friction and heat generation, especially at high speeds. This heat can cause thermal expansion, affecting the gearbox’s performance and longevity.
- Wear and Noise: High speeds can exacerbate wear and noise issues in worm gearboxes. Increased friction and wear can lead to faster degradation of components, resulting in reduced lifespan and increased maintenance needs.
- Backlash: Worm gearboxes may have higher backlash compared to other gearbox types, which can impact precision and accuracy in high-speed applications.
While worm gearboxes are more commonly used in applications requiring high torque and moderate speeds, they may not be the best choice for high-speed scenarios. If high-speed operation is a requirement, other gearbox types such as helical, spur, or planetary gearboxes are often better suited due to their higher efficiency, lower heat generation, and reduced wear at elevated speeds.
How to Calculate the Efficiency of a Worm Gearbox
Calculating the efficiency of a worm gearbox involves determining the ratio of output power to input power. Efficiency is a measure of how well the gearbox converts input power into useful output power without losses. Here’s how to calculate it:
- Step 1: Measure Input Power: Measure the input power (Pin) using a power meter or other suitable measuring equipment.
- Step 2: Measure Output Power: Measure the output power (Pout) that the gearbox is delivering to the load.
- Step 3: Calculate Efficiency: Calculate the efficiency (η) using the formula: Efficiency (η) = (Output Power / Input Power) * 100%
For example, if the input power is 1000 watts and the output power is 850 watts, the efficiency would be (850 / 1000) * 100% = 85%.
It’s important to note that efficiencies can vary based on factors such as gear design, lubrication, wear, and load conditions. The calculated efficiency provides insight into how effectively the gearbox is converting power, but it’s always a good practice to refer to manufacturer specifications for gearbox efficiency ratings.
How Does a Worm Gearbox Compare to Other Types of Gearboxes?
Worm gearboxes offer unique advantages and characteristics that set them apart from other types of gearboxes. Here’s a comparison between worm gearboxes and some other common types:
- Helical Gearbox: Worm gearboxes have higher torque multiplication, making them suitable for heavy-load applications, while helical gearboxes are more efficient and offer smoother operation.
- Bevel Gearbox: Worm gearboxes are compact and can transmit motion at right angles, similar to bevel gearboxes, but worm gearboxes have self-locking capabilities.
- Planetary Gearbox: Worm gearboxes provide high torque output and are cost-effective for applications with high reduction ratios, whereas planetary gearboxes offer higher efficiency and can handle higher input speeds.
- Spur Gearbox: Worm gearboxes have better shock load resistance due to their sliding motion, while spur gearboxes are more efficient and suitable for lower torque applications.
- Cycloidal Gearbox: Cycloidal gearboxes have high shock load capacity and compact design, but worm gearboxes are more cost-effective and can handle higher reduction ratios.
While worm gearboxes have advantages such as high torque output, compact design, and self-locking capability, the choice between gearbox types depends on the specific requirements of the application, including torque, efficiency, speed, and space limitations.
editor by CX 2024-03-15
China OEM Reducer, Worm Gear Reducer, Speed Reducer Gearboxes High Speed Gearbox Reducer Nmrv-030-5-5614 differential gearbox
Product Description
Reducer, Worm Gear Reducer, Speed Reducer Gearboxes High Speed Gearbox Reducer NMRV-030-5-5614
Product Description
Type |
Reduction gearbox |
Rated power |
3KW/4KW/5.5KW/7.5KW/11KW |
Product name |
Gearbox |
Model |
NMRV150 |
Material |
Cast iron |
Features |
Conveyor belt/transportation/industrial, small size, high heat dissipation, smooth transmission, low noise |
Technical performance and selection reference
Motor power |
Model |
speed ratio |
output speed |
output toruqe |
0.25kw 1400rpm |
RV075 |
60 |
24rpm |
68.0N.M |
RV075 |
80 |
18rpm |
80.0N.M |
|
RV075 |
100 |
14rpm |
94.0N.M |
|
0.37kw 1400rpm |
RV075 |
40 |
35rpm |
74.0N.M |
RV075 |
50 |
28rpm |
88.0N.M |
|
RV075 |
60 |
24rpm |
97.0N.M |
|
RV075 |
80 |
18rpm |
119.0N.M |
|
RV075 |
100 |
14rpm |
139.0N.M |
|
0.55kw 1400rpm |
RV075 |
25 |
56rpm |
76.0N.M |
RV075 |
30 |
47rpm |
87.0N.M |
|
RV075 |
40 |
35rpm |
108.0N.M |
|
RV075 |
50 |
28rpm |
128.0N.M |
|
RV075 |
60 |
24rpm |
144.0N.M |
|
RV075 |
80 |
18rpm |
177.0N.M |
|
RV075 |
100 |
14rpm |
206.0N.M |
|
0.75kw 1400rpm |
RV075 |
15 |
94rpm |
66.0N.M |
RV075 |
20 |
70rpm |
85.0N.M |
|
RV075 |
25 |
56rpm |
101.0N.M |
|
RV075 |
30 |
47rpm |
117.0N.M |
|
RV075 |
40 |
35rpm |
147.0N.M |
|
RV075 |
50 |
28rpm |
174.0N.M |
|
RV075 |
60 |
24rpm |
196.0N.M |
|
RV075 |
80 |
18rpm |
250.0N.M |
|
1.1kw 1400rpm |
RV075 |
10 |
140rpm |
66.0N.M |
RV075 |
15 |
94rpm |
95.0N.M |
|
RV075 |
20 |
70rpm |
122.0N.M |
|
RV075 |
25 |
56rpm |
148.0N.M |
|
RV075 |
30 |
47rpm |
171.0N.M |
|
RV075 |
40 |
35rpm |
216.0N.M |
|
RV075 |
50 |
28rpm |
263.0N.M |
|
RV075 |
60 |
24rpm |
297.0N.M |
|
1.5kw 1400rpm |
RV075 |
7.5 |
186rpm |
68.0N.M |
RV075 |
10 |
140rpm |
89.0N.M |
|
RV075 |
15 |
94rpm |
129.0N.M |
|
RV075 |
20 |
70rpm |
166.0N.M |
|
RV075 |
25 |
56rpm |
202.0N.M |
|
RV075 |
30 |
47rpm |
233.0N.M |
|
RV075 |
40 |
35rpm |
299.0N.M |
|
2.2kw 1400rpm |
RV075 |
7.5 |
186rpm |
99.0N.M |
RV075 |
10 |
140rpm |
131.0N.M |
|
RV075 |
15 |
94rpm |
189.0N.M |
|
RV075 |
20 |
70rpm |
249.0N.M |
|
RV075 |
25 |
56rpm |
304.0N.M |
|
RV075 |
30 |
47rpm |
247.0N.M |
|
3.0kw 1400rpm |
RV075 |
7.5 |
186rpm |
135.0N.M |
RV075 |
10 |
140rpm |
178.0N.M |
|
RV075 |
15 |
94rpm |
258.0N.M |
|
4.0kw 1400rpm |
RV075 |
7.5 |
186rpm |
180.0N.M |
RV075 |
10 |
140rpm |
237.0N.M |
Specification
Product name |
SNRV worm gear reducer |
Ratio |
5,7.5,10,15,20,25,30,40,50,60,80,100 |
Input power |
0.25~4.0 KW |
Color |
Blue/Silver/Black or on Request |
Weight |
9 Kg |
Material |
571-105 aluminum alloy, 110-150 cast iron |
The worm material is 20Cr carburized and quenched, the surface hardness reaches 58-62 degrees, and after processing, the |
|
Worm gear hub ductile iron QT500, tooth tin bronze ZQSN10-1 |
|
Oil seals |
CHINAMFG |
Input form |
SMRV : fitted for motor flanged coupling |
SMRV:The tail of the worm has an extension shaft |
|
SRV: with input shaft |
|
SRV-E : With bidirectional input shaft worm |
|
Suitable motor pole |
2pole,4pole,6pole |
Inch size |
Available |
Personal customization |
Available |
Extra service |
OEM |
Quality Assurance |
1 year |
Features |
High precision, smooth transmission, large output torque, low noise, long service life |
Suitable for omni-directional installation |
|
Can be easily mounted with various accessories like torque arms, different types of flanges, shafts and so on |
|
Good rust resistance |
Surface coating |
First, the shell is treated by surface particle blasting, and then, through special anticorrosion treatment, RAL5571 blue plastic |
After polishing and sanding, it is dried at high temperature and then sprayed with RAL5571 paint in the shell. |
|
/* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
Application: | Motor, Electric Cars, Motorcycle, Machinery, Agricultural Machinery |
---|---|
Hardness: | Hardened Tooth Surface |
Installation: | Vertical Type |
Layout: | Coaxial |
Gear Shape: | Conical – Cylindrical Gear |
Step: | Stepless |
Samples: |
US$ 9/Piece
1 Piece(Min.Order) | |
---|
Customization: |
Available
| Customized Request |
---|
How to Install and Align a Worm Reducer Properly
Proper installation and alignment of a worm reducer are crucial for ensuring optimal performance and longevity. Follow these steps to install and align a worm reducer:
- Preparation: Gather all the necessary tools, equipment, and safety gear before starting the installation process.
- Positioning: Place the worm reducer in the desired location, ensuring that it is securely mounted to a stable surface. Use appropriate fasteners and mounting brackets as needed.
- Shaft Alignment: Check the alignment of the input and output shafts. Use precision measurement tools to ensure that the shafts are parallel and in line with each other.
- Base Plate Alignment: Align the base plate of the reducer with the foundation or mounting surface. Ensure that the base plate is level and properly aligned before securing it in place.
- Bolt Tightening: Gradually and evenly tighten the mounting bolts to the manufacturer’s specifications. This helps ensure proper contact between the reducer and the mounting surface.
- Check for Clearance: Verify that there is enough clearance for any rotating components or parts that may move during operation. Avoid any interference that could cause damage or performance issues.
- Lubrication: Apply the recommended lubricant to the worm reducer according to the manufacturer’s guidelines. Proper lubrication is essential for smooth operation and reducing friction.
- Alignment Testing: After installation, run the worm reducer briefly without a load to check for any unusual noises, vibrations, or misalignment issues.
- Load Testing: Gradually introduce the intended load to the worm reducer and monitor its performance. Ensure that the reducer operates smoothly and efficiently under the load conditions.
It’s important to refer to the manufacturer’s installation guidelines and specifications for your specific worm reducer model. Proper installation and alignment will contribute to the gearbox’s reliability, efficiency, and overall functionality.
Worm Gearboxes in Conveyor Systems: Benefits and Considerations
Worm gearboxes play a crucial role in conveyor systems, offering several benefits and considerations for their effective integration:
- Space Efficiency: Worm gearboxes have a compact design, making them suitable for applications with limited space, such as conveyor systems.
- High Reduction Ratios: Worm gearboxes can achieve high reduction ratios in a single stage, allowing for slower conveyor speeds without sacrificing torque.
- Self-Locking: Worm gearboxes have inherent self-locking properties, preventing the conveyor from moving when the motor is not actively driving it.
- Directional Control: Worm gearboxes facilitate directional control, enabling the conveyor to move forward or reverse as needed.
- Low Noise: Worm gearboxes often produce lower noise levels compared to other gearbox types, contributing to quieter conveyor operation.
However, there are also considerations to keep in mind when using worm gearboxes in conveyor systems:
- Efficiency: Worm gearboxes may have lower mechanical efficiency compared to some other gearbox types, leading to energy losses.
- Heat Generation: Worm gearboxes can generate more heat due to sliding contact between the worm and gear, necessitating proper cooling mechanisms.
- Lubrication: Proper lubrication is critical to prevent wear and ensure efficient operation. Regular maintenance is required to monitor lubrication levels.
- Load and Speed: Worm gearboxes are well-suited for applications with high torque and low to moderate speed requirements. They may not be optimal for high-speed conveyors.
Before integrating a worm gearbox into a conveyor system, it’s important to carefully consider the specific requirements of the application, including load, speed, space constraints, and efficiency needs. Consulting with gearbox experts and manufacturers can help ensure the right choice for the conveyor’s performance and longevity.
What is a Worm Gearbox and How Does It Work?
A worm gearbox, also known as a worm gear reducer, is a mechanical device used to transmit rotational motion and torque between non-parallel shafts. It consists of a worm screw and a worm wheel, both of which have helical teeth. The worm screw resembles a threaded cylinder, while the worm wheel is a gear with teeth that mesh with the worm screw.
The working principle of a worm gearbox involves the interaction between the worm screw and the worm wheel. When the worm screw is rotated, its helical teeth engage with the teeth of the worm wheel. As the worm screw rotates, it translates the rotational motion into a perpendicular motion, causing the worm wheel to rotate. This perpendicular motion allows the worm gearbox to achieve a high gear reduction ratio, making it suitable for applications that require significant speed reduction.
One of the key features of a worm gearbox is its ability to provide a high gear reduction ratio in a compact design. However, due to the sliding nature of the meshing teeth, worm gearboxes may exhibit higher friction and lower efficiency compared to other types of gearboxes. Therefore, they are often used in applications where efficiency is not the primary concern but where high torque and speed reduction are essential, such as conveyor systems, elevators, automotive steering systems, and certain industrial machinery.
editor by CX 2024-02-25