Selection, Operation & Maintenance – Your One-Stop Resource for Extruder Gearbox Solutions
🛢️Oil Leakage
Analysis and solutions for output shaft leakage, housing joint seepage, breather plug blockage, and seal failures in twin-screw and triple-screw gearboxes.
🔊Abnormal Noise & Vibration
Diagnosis and remediation of abnormal noise and vibration caused by gears, bearings, couplings, and load-related factors.
⚡Bearing & Gear Damage
Fault diagnosis and replacement criteria for bearing wear, cage fracture, raceway spalling, as well as gear tooth breakage, pitting, and scoring.
🌡️Overheating
Root cause analysis and cooling improvement measures for gearbox and bearing overheating.
🔧Maintenance & Servicing
Daily maintenance essentials, lubricant selection, and recommended oil change intervals for gearboxes.
🗒️Selection Guide
Selection parameters and matching recommendations for twin-screw and triple-screw gearboxes and output shafts.
Latest Technical Articles
🛢️Oil Leakage
- Parallel Twin-Screw Gearbox Leaking? Don’t Rush to Replace the Seal — Check These Steps First2026年8月25日If your gearbox is leaking oil, don’t replace the oil seal right away. Before doing that, go through these checks — otherwise, the new seal ...
🔊Abnormal Noise & Vibration
- Gearbox Making Unusual Noise? Listen First, Then Diagnose.2026年8月7日Nothing worries operators more than unexpected sounds from running equipment. Unusual noise from a gearbox doesn’t always mean it’s broken — but it’s always a ...
⚡Bearing & Gear Damage
- Thrust Bearing Keeps Failing? It Might Not Be a Quality Issue2026年8月25日First, see if this sounds familiar Your equipment has been running for a while, and you notice the gearbox getting noisier than before. The bearing housing ...
🌡️Overheating
- Gearbox Running Hot? Don’t Just Blame the Lubricant.2026年8月25日A customer once asked us: “The gearbox temperature keeps rising during operation, and even changing to new oil didn’t help. What’s going on?” Today, let’s ...
🔧Maintenance & Servicing
- Why Change Gearbox Oil? And When?2026年8月25日The oil in your gearbox does more than just lubricate — it also carries heat away. When oil gets contaminated, friction heat builds up rapidly ...
- Why Does Kunka Perform a 4- to 6-Hour Test Run on Every Gearbox Before Delivery?2026年8月25日Not every gearbox manufacturer does this. So why do we spend hours running our gearboxes on the test stand? Today, let’s talk about what test ...
🗒️Selection Guide
- Shell-and-Tube Cooler vs. Plate Cooler – Which One to Choose?2026年8月25日When it comes to cooling your gearbox, the choice between a shell-and-tube cooler and a plate cooler can make a real difference in performance, maintenance, ...
- Gearbox Selection: The Most Common Mistakes2026年8月25日Gearbox Selection: The Most Common Mistakes Selecting the right gearbox isn’t as straightforward as it seems. Here are the most common pitfalls we see — and ...
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