KEYA HK series third-generation twin-screw extruder adopts German advanced design concept and some latest research results of twin-screw transmission system in important links such as gear design and bearing structure. In particular, the gears are designed and manufactured according to the latest international standards for high-precision gear grinding and modification, which greatly improves the bearing capacity and stability.
At the same time, the latest HK series double screw extruder is designed and adopts enhanced gearbox oil circuit and lubrication system, which can work normally under low flow. Maintenance free pump body can operate without fault for a long time, so as to ensure the stable production of the equipment.
Of course, good products also need maintenance. Here are some maintenance tips related to the gearbox of double screw extruder.
(1). The gearbox of the main machine of the twin-screw extruder shall be well ventilated, and the working ambient temperature shall be within the range of 5-35 ℃.
(2). Regularly check the oil quantity of gear lubricating oil in the box to ensure that all transmission parts in the box are well lubricated.
(3). Pay attention to regularly check all bearing parts of the box. During operation, the oil temperature of the oil tank of the transmission box shall not exceed 70 ℃.
(4). The lubricating oil of the newly put into use gearbox needs to be replaced after 250h of operation. The later oil change time depends on the oil state. It is recommended to replace it after 4000-8000 hours of operation or once a year.
(5). The gear box of double screw extruder shall be regularly maintained and inspected once a year (it is recommended to be operated by the professional maintenance engineer of KEYA). The work contents are as follows:
a. Disassemble the gearbox cover and check the wear and meshing of the working surface of each transmission reduction gear. If there are burrs or shallow pits on the meshing surface, it can be polished with oilstone; Gears with severe wear shall be prepared to purchase accessories for replacement during the next maintenance.
b. Check the wear of each bearing. First clean the bearing and check whether the inner and outer sleeves have cracks; Observe the idling noise and radial clearance, and if no problem is found, you can add some grease to continue to use.
c. Check whether the lubricating oil in the box is clean. If there are many impurities or metal powders in the oil, filter the lubricating oil and remove impurities, and then supplement the amount of lubricating oil.
d. After cleaning and checking the parts in the double screw extruder box, install the box cover; After adding enough grease to each bearing, replace the oil seal and fasten the bearing cover.
e. Clean the outside of the gear box and keep the equipment clean.
(1). If there are deep wear pits on the involute meshing tooth surface of the gear, the noise is large and irregular during rotation, and there is often impact vibration, this kind of gear should be replaced.
(2). The inner sleeve or outer sleeve of the ball bearing is cracked, and the ball frame is damaged. The radial clearance of the inner sleeve is large, and the rotation noise of the rotating outer sleeve bearing is large. After the rolling bearing is cleaned, if one of the above damages is found, the rolling bearing should be replaced.
(1). Gears and bearings shall be cleaned, trimmed and deburred before installation.
(2).Check the dimensions of the replaced gear hole and the assembled shaft, key and keyway, which shall meet the matching tolerance requirements specified in the drawing, and the replaced rolling bearing shall be the same as the original bearing model.
Nanjing KEYA has launched NBD (door-to-door service on the next working day) since 2010 to provide professional services for the maintenance and cleaning of user equipment. You can call Nanjing KEYA after-sales service at any time.
Related News
Tel: +86-25-52706155
E-mail: info@kymach.com
No.59 West Tianyuan Road, Jiangning, Nanjing, Jiangsu Province, China
English 
日本語 
한국어 
français 
Español 
русский 
português 
العربية 
中文
