Varitron Planetary Gear Reducer
The best quality of Varitron Planetary Gear Reducer
Hydrostatic planetary gearheads are the ideal drive unit for cranes. Its perfect performance guarantees reliable operation of cranes under very harsh and harsh conditions. Its compact structure. The input end can be installed with spring brake and hydraulic release multi-plate parking brake as required; the use of surface-hardened gears and nitriding ring gears and high-quality grinding process make the reducer have low noise and high efficiency operation. High manufacturing standards guarantee excellent carrying capacity and reliability.
The company has excellent design concepts and technical means to consistently conduct product research and development, making the product extremely competitive in the market. The designed speed reducer not only meets Rexroth standards, but also provides similar products as Zhuo Lu, Fei Li, and Brevini. To meet the user's special needs for size and output, we can make non-standard improvements to find the most suitable solution. This type of reducer has been widely used in the field of lifting devices, and has been tested to improve the actual load pull. It is suitable for crane structures such as automobile cranes and structural cranes, railway cranes, offshore platforms and deck cranes, ports and shipyard cranes, and container gantry cranes.
The structural characteristics
(1) High-strength modular structure
(2) Compact structure of two and three planet design
(3) Simple installation and maintenance, stable performance
(4) Low noise, high efficiency, easy oil change
(5) Built-in multi-disc brake
The use of conditions
The reducer is designed for ambient temperature range -20~C+80~C.
When working in harsh environments (such as: salt water, salt gas, dust, mud, overpressure, strong shocks, ambient temperature, intrusive media, etc.) will affect the performance of the reducer, please consult us first.
Design standard parameters
Refer to the FEM third edition standard. Determine the classification of load status, the level of agency utilization, and the corresponding agency work level; use the coefficient of the work level of other agencies to correct.
European lifting appliance design code Third edition 1987, revised edition 1998
GB3811 crane design specification
JB/ZZ5 Welding Design Specification
GB3811-83, GB/T3480-1997 Calculation method for bearing capacity of involute cylindrical gears
GB/T10095-2001 Accuracy of Involute Spur Gear GB/3984-1992 Involute Spur Gear Accuracy Inspection Specification
Tnom (N.m): Dynamic torque. According to the FEM standard M5 (T5-L2), the reference output speed is 15 rpm and the maximum output speed is 25 rpm, taking into account the load situation and including the torque value of the increasing coefficient rm brake.
Tstat(N.m): The maximum static output torque that the reducer can withstand. Refers to the operating torque during a static or long intermittent operation or a short-term peak.
T 2 (N.m): Work Calculated torque. N1 (rpm): The maximum input speed of the reducer. N2 (rpm): Speed of the reducer output.
TB (N.m): Brake static braking torque. P(bar): brake opening pressure. Pmax(bar): The maximum withstand voltage of the brake open circuit.
Dw (mm): The diameter of the winch drum load. Fnom (KN): Wire rope single rope tension.
K: Agency work level factor.
The reducer is designed to directly mount flanged or variable hydraulic motors. If needed. Hydraulic motor can also be included in the scope of delivery of the reducer (specially available for motor drive)
The planetary gear unit contains a spring-loaded, hydraulically released, normally closed, multi-plate parking brake placed on the input. Brakes for controlling the brake
The opening "C" port M12x1.5, this port can pull out the oil from the control valve, when the motor is running, the pressure of the control tube opens when the spring release value is reached,
The general brake release pressure is a minimum of 15 bar. The maximum is 30bar; when the pressure is zero, the brake is closed, when the circuit is closed, the effective braking torque will be reduced
small. General requirements for back pressure not more than 0.5 bar.
TB=KT(hydraulic motor input torque) (K=I.5 for winch and k=1.3 for swing)
This type of brake cannot be used for service brakes. The choice of braking torque differs depending on the gear ratio.
The mechanical efficiency of each transmission stage is 98%, and the mechanical efficiency of each support bearing and seal ring is 99%. For example: The mechanical efficiency of a two-stage planetary gear mechanism is
The installation location
The winding reducer is installed horizontally inside the drum; the slewing reducer is installed vertically. If it is mounted horizontally, it must be stated in advance.
All gears and antifriction bearings are lubricated with oil. In addition to regular oil changes, the reducer does not require maintenance. Lubricant replacement cycle and lubricant selection are given in the table below.
Paint requirements: corrosion resistance, moisture resistance, salt and alkali resistance, cold resistance and so on. The primer is epoxy zinc-rich primer (dry film thickness 70μm),
Intermediate paint with epoxy cloud iron paint (dry film thickness 40μm). Finishing paint according to user standards.
Agency work level and agency utilization level (according to FEM (EU standard) third edition)
Example of equipment classification (according to the third edition of FEM (EU))
This product can be widely used in the field of lifting machinery，including bridge crane, gantry crane, tower crane, mobile crane, gantry crane, elevator, cable crane, mast crane and mechanical parking equipment.
All exported gearboxes covered with Anti rust oil and plastic film, then packed in wood box with Fumigation.
1.We always feel that all success of our company is directly related to the quality of the products we offer. They meet the highest quality requirements as stipulated in ISO9001:2008, GB/T19001-2008,CE Certification and New Hi-tech Enterprises Certification and our stringent quality control system.
1. How long is your delivery time?
A: Generally it is within 7 days if the goods are in stock, for goods produced as per order, it is within 25 days after confirmation of order.
2. Will you tell us how the goods is go to be packed?
A: Covered with Anti rust oil and plastic film, then packed in wood box with Fumigation.
3. What does your factory do regarding quality control?
A: We pay much more importance to quality from the very beginning to the end of production, Every gearbox will be fully assembled and carefully tested before shipment