China High quality Speed Reducer NMRV90 Gearbox Worm Gear Box With Input Flange Worm Geard Motor Speed Reducer with Hot selling

Warranty: 3 years
Applicable Industries: Manufacturing Plant, Machinery Repair Shops, Construction works , Energy & Mining, Other
Customized support: OEM, ODM
Gearing Arrangement: Helical
Output Torque: 450—480000NM
Input Speed: 750-1500rpm
Output Speed: 14-280rpm
Product name: prices steel plate welded hard toothed cylindrical driver gearbox
Usage: Industrial Machine
Gear Material: 45# Steel
Ratio: 8.23/10.35/15.75/20.49/23.34/31.5/40.17/48.57
Heat treatment: Quenching
Color:: Customized
Material: Cast iron/cast steel
Feature: Low noise,easy installation, long service life and easy maintenance
Packing: Wooden box
Keyword: speed reducer
Packaging Details: Pieces/wooden box:Crane speed reducer prices steel plate welded hard toothed cylindrical driver gearbox
Port: ZheJiang


1. Gear is made of high strength low carbon alloy steel by carburizing and quenching. The hardness of tooth surface can reach HRC58-62. CNC grinding technology is adopted for all gears, with high precision and good contact performance
2. high transmission efficiency: single stage over 96.5%; double stage over 93%; 3 stage over 90%;
3. stable operation and low noise;
4, compact structure, light weight, long service life and high bearing capacity;
5. easy to disassemble, check and assemble.
Operation specifications and precautions
1.High modularization design: many equip with various motor or other power input conveniently.Same machine type may equip with various power motor. It is easy to realize the combination andjunction between every machine type.
2.Transmission ratio: fine division, wide scope. The combined machine type may form very large transmission ratio, i.e. output very low rotary speed.
3.Form of installation: the position to be installed is not limited.
4.High strength, compact: the box body is made of high strength cast iron. Gear and gear shaft adapts the gas carbonization, quenching and fine grinding process, therefore the bearing capacity of unitvolume is high.
5.Long life: Under the condition of correct type chosen (including choosing suitable operation parameters)normal operation and maintenance, the life of main parts of speed reducer (except wearing parts) should not be less than 20000 hours. The wearing parts include lubricating oil, oil seal and bearing.
6.Low noise: because main parts of speed reducer are processed, assembled and tested critically,therefore the noise of speed reducer is low;
7.Parallel axis -bevel wheel speed-down motor
Crane speed reducer prices steel plate welded hard toothed cylindrical driver gearbox

Our company is located in HangZhou City, HangZhou City, ZheJiang Province, China, which is the gathering place for the production of reducer and its accessories. We have 20 years of production and manufacturing experience, and always provide customers with good product and technical support, sound after-sales service. Since its establishment, we have been adhering to technological innovation, research and introduction of advanced technology, and constantly develop new products to meet market demand. Our company mainly engaged in gear, reducer and accessories, general machinery parts manufacturing, sales. We have a good product and professional sales and technical team. If you are interested in our products and services, we are looking forward to your online message or call for consultation.

Q: Are you trading company or manufacturer ?
A: We are factory.

Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance ,balance before shippment. If you have another question, pls feel free to contact us as below:

CZPT Mechanical Speed Variator Dissectible

CZPT Mechanical Speed Variator Dissectible is part of a series of dissectable industrial gear reducers. Its heavy gauge baseplate allows students to perform realistic disassembly and inspection of a mechanical speed variator commonly encountered in industrial settings. A complete disassembly guide is also provided for the mechanical speed variator dissection training experience.

Intensity limiter

The Intensity Limiter for Speed Variator is a device that regulates the power to the motor by limiting the intensity of the starting current. This device employs a substantial portion of the variator elements and is low-cost and space-efficient. It also works at low current and power levels.

Capacitor C

The Speed Variator is composed of two main components, a rectifier module and a capacitor. The rectifier module provides the DC voltage bus and is located upstream of the inverter module. The ballast capacitor 29 is situated between the two. Both the components work together to regulate the output voltage.
The voltage across the capacitor is applied through the potentiometer P. When the current is greater than the voltage across the resistor R 4, it results in a positive half-cycle. At this point, the current from point A polarizes the Zener diode Z, which has a conduction threshold of 100 volts. In the meantime, the capacitor C continues to be charged through the potentiometer P at a constant current. Moreover, the resistance R 4 is adapted to determine the charging current required to maintain the minimum motor speed.
Another type of Speed Variator is an overspeed protection device. This device protects the motor from an overload by limiting the motor current. This component also limits the output voltage when the motor is started. This design requires low currents and low powers and reduces the overall cost of the device. In addition, it also ensures that the motor operates at low speeds. This means that the voltage at the output of the Variator should be lower than the voltage at the motor.

Protection circuit CP

The Speed Variator is a device that controls motor speed by adjusting a potentiometer. During normal operation, the motor can run at one half of the supply voltage or both half-cycles at high speeds. The speed regulation is automatic and the transition between these modes is seamless. In the present invention, the motor is protected from overloads by incorporating a circuit CP, which serves as a second shunt circuit for charging the capacitor C. The circuit CP requires a -ve voltage that represents the current in the motor during negative half-cycles.
The Speed Variator protection circuit CP includes two transistors with opposite polarity and common emitter configurations. The transistors are connected through their common collector resistors R 15 and R o. The transistors are protected by the circuit through diode D 3. Diode D 3 is connected in series with resistor R 16 and is connected to the junction point of the capacitor C and the resistor R o. The common collector resistor R 16 regulates the +ve voltage of the measuring circuit CM.

Mechanical continuous gear variator 100

A mechanical continuous gear variator 100 is a type of transmission that has multiple gears. This type of transmission includes a first shift element B1, a second shift element K1, and a third shift element C2. The first shift element B1 has a clutch or brake, while the second shift element is either a gear or a sprocket.
Mechanical continuous gear variators can be used to change the speed of an engine. This type of gearbox can be attached to a milling machine or a drill. A mechanical continuous gear variator 100 can be attached to the drive shaft of one device, while a second device can be connected to the driven shaft of another device. By adjusting the speed of the second device, the mechanical continuous gear variator 100 can make it faster or slower, and reduce or increase the amount of work needed to finish the task.
Mechanical continuous gear variator 100 comprises two groups of multiplier gears 50, 60. The drive shaft 1 is rotatably mounted on a frame 13, and the driven shaft 9 is rotatably mounted on carriage or rails. The movable translation means are coupled to adjustment means, which adjust the position of the movable translation means.
Mechanical continuous gear variator 100 functions as a variable multiplier, wherein the first group of gears performs the first multiplication and the second group performs the second. These groups then multiply the same amount, giving double the final multiplication. The ratio between the drive shaft 1 and the driven shaft 9 is 1:1. The final ratio is greatest when the carriage 10 is at its maximum translation distance.
Mechanical continuous gear variator 100 implements three shift modes. The first range, V1, is the first range. The second range, V2, is the second range. The third range is the third range. These three modes are implemented by selectively controlling the shift elements of transmission device 100. The shift elements open and close alternately at the speed-synchronized point.
China High quality Speed Reducer NMRV90 Gearbox Worm Gear Box With Input Flange Worm Geard Motor Speed Reducer     with Hot selling		China High quality Speed Reducer NMRV90 Gearbox Worm Gear Box With Input Flange Worm Geard Motor Speed Reducer     with Hot selling
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