China fully grasps the production technology of heavy-duty automotive mechanical gearboxes


China National Heavy Duty Truck Group Datong Gear Co., Ltd. cooperated with Austrian AVL Liszt internal combustion engine and test equipment company to enable China to master the key technologies of heavy-duty automobile mechanical gearbox production and formed a low cost, high performance, high torque suitable for China's national conditions. Synchronizer mechanical gearbox industrialization production capacity.

Both China and Austria have developed 16-speed heavy-duty automotive mechanical transmission products with advanced international standards to replace similar imported products. Solved the key problems of low gears and countershaft gears of the front auxiliary box, pitting of the front axle of the two axles, burning of the rear auxiliary box synchronizer, pitting of the sun gear, burning of the planetary gear bearings, and poor lubrication of the rear auxiliary box. technical challenge. Mastered the modern car mechanical transmission design and manufacturing of new technologies and new methods, HW19710T series transmission products have achieved mass production, as of the end of 2012, the cumulative sales income of 270 million yuan. The main results of the project have been applied to the research and development and optimization of other multi-range mechanical transmissions, effectively improving the performance of the self-owned brand transmissions. A total of 5 invention patents were obtained, filling the domestic gap.

At present, the cooperation between Big Tooth Company and AVL Austria has expanded into the AMT automatic transmission field and continues to develop AMT automatic transmissions for commercial trucks, dump trucks, buses and special purpose vehicles.

PT100 Temperature Control

SKYELEC Heater Rod Thermostats are suitable for use with Single Phase to control heating in electroplating baths.They are equipped with a 1.6 metre supply cord and standard red cap terminal casing.


The temperature control probe is suitable for automatic control of a pre-set value in the process media and are suitable for heaters up to 2.3 kw single phase. For higher loads, or three phase heaters an additional contactor should be used.

The probes construction makes it ideally suited for etch, pickle and plating solutions. Its robust construction and chemical resistance ensures a long service life. To set the rod thermostat, unscrew the red cover which provides access to the temperature setting control knob. Turn until the desired temperature is opposite the arrow.


Suitable for use with single phase to control heating of electroplating baths and similar solutions.

Comes complete with heavy duty terminal box and adjustable mounting blocks ready for connection.

Available in: Stainless steel, Titanium, Mild Steel or PTFE.

Alternative lengths are available to order.

The units incorporate an integral 25 amp rated thermostat unit housed with a chemically resistant, PVC coated steel terminal box, complete with quick fix brackets.

The thermostat opens on a rising temperature. Range: 25°C to 100°C. They are suitable for up to 6 kw heaters on a single phase supply. For higher loads or a three phase supply an additional contactor should be used.

The control knob is situated outside the PVC coated terminal box.


PT100 Temperature Control, Heater Rod Thermostats, Electroplating Temperature Control

Guangzhou Quanxu Technology Co Ltd , https://www.inkjetcoating.com