Gear Speed Reducer for Wind Turbines Planetary Gearbox
Superior Performance
The replacement of the NB700L4 yaw drive gearbox and pitch drive gearbox is used for different components of wind energy plants. This gear speed reducer for wind turbines is primarily responsible for the transmission of the rotor and the nacelle. Our slewing planetary gear units from the yaw and pitch range are normally used to control blade pitch for the turbines. The nacelle at the top of the tower is connected to the rotor and houses the gearbox, the electrical generator, the yaw system, and the control system. To make sure that the rotor axis is constantly aligned with the wind direction for maximum energy output, large wind turbines are equipped with a yaw system that allows the nacelle to adjust its position according to the direction and force of the wind. Nacelle rotation is controlled by a yaw system, a planetary gear unit with an electric brake motor.
Each wind turbine must have between two and six gear units, depending on the size, and the motor can be electric or hydraulic. Two or three-stage gear units, combined with a worm gearbox on the input side, or four or five-stage gear units from the yaw and pitch drive series are normally used. Output pinions can be integrated or inserted.
Key Features
1. Output torque range: 1000-80000 N.m
2. Gear Ratios: i=300-2000
3. Support: slew support (with flange-mounted)
4. Electric Brake: DC and AC type
5. Output shaft: splined or with integral pinion; output shafts supported by heavy-duty capacity bearings
6. Applicable motors: IEC electric motors
Product Identification Scheme
1 | 2 | 3 | 4 | 5 | 6 |
NB | 706 | L | 4 | 1671 | IEC80B5 |
1. NB: Ningbo planetary gearbox
2. 706: Gearbox size, 700, 701, 703…715
3. L: L series slew drive
4. 4: Number of stages, 4…four stage
5. 1671: Ratio
6. IEC80B5: Motor type
edited by CX
Type | Nominal Output Torque (N.m ) | Peak Static Output Torque (N.m ) | Ratio (i) |
NB700L | 1000 | 2000 | 297--2153 |
NB701L | 2000 | 4000 | 297--2153 |
NB703AL | 2500 | 5000 | 278--1866 |
NB705AL | 5000 | 10000 | 278--1866 |
NB706BL4 | 8000 | 15000 | 203--2045 |
NB707AL4 | 12000 | 25000 | 278--1856 |
NB709AL4 | 18000 | 30000 | 278--1856 |
NB711BL4 | 35000 | 80000 | 256--1606 |
NB710L4 | 25000 | 50000 | 329--1420 |
NB711L4 | 35000 | 80000 | 256--1606 |
NB713L4 | 50000 | 100000 | 250--1748 |
NB715L4 | 80000 | 140000 | 269--1390 |
Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.
Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port