At present, there are still quality differences between mainstream gearboxes and overpressure torque gearboxes. Pay attention to daily maintenance, including adapting optimal lubrication oil, preventing oil leakage, and reducing noise and vibration. Therefore, the service life of the gearbox can be prolonged. ZHAOWEI, as a manufacturer with a technical R&D team of the gearbox, provides several maintenance methods for you.
The gearbox is a power transmission and deceleration device. Gearbox transforms the revolutions of the motor into revolutions required by the working device and increases torque through the meshing of gears with different numbers of teeth. For plastic extruders, the gearbox is a key component, which influences the comprehensive performance of the extruder directly.
ZHAOWEI’s engineer team proposes that most extruder gearbox features poor loading capacity and low torque, There are technical differences between the general gearboxes and overpressure gearboxes, like gear melting technology, thermoplastic processing, cold working, and assembly. High torque, high speed, and low noise are the trending extrusion requirements.
How to Maintain Gearbox of Unstable Quality?
Reduce Noise and Vibration
Reduce running noise and vibration of the micro gearbox is the key to daily maintenance. ZHAOWEI suggests that we can start with checking problems like spot contact of side clearance of gear pair and tooth surface, deformation of the gearbox body, overloading of the gearbox, damage of the bearing, loose connection of the equipment, and damage of the coupling. Thus, noise and vibration can be effectively reduced.
Adapt Optimal Lubricating Oil
We summarize the common faults of extruder gearbox and find that the main manifestations of improper maintenance are improper lubricating oil used by customers and failure to change the lubricating oil within the maintenance period.
Using lubricating oil that is not in accordance with the brands of extruder gearbox can aggravate the wear of tooth surface, shortening the service life of the gear and bearing. Even if using proper lubricating oil brand, failure to obey maintenance requirements and change lubricating oil timely can cause plenty of sludge, which will cause invalid lubrication system, and seriously abrade tooth surface in a short period, eventually damage bearing for lack of lubrication.
Oil Leak Inspection
Oil leak inspection is essential to gearbox maintenance. The inspection should proceed from machining precision and the sealability of the sealing ring. You’d better regularly check oil seal lip for damage, oil seal for aging, whether the cavity aperture is oversize or damaged, oil return hole for unobstruction, whether the oil intake is too large, whether the fit between the oil seal lip and the journal is too loose, and whether the coaxiality of the oil seal and the journal meets the requirements.