Why Does the Bearing of Impact Crushers Overheat in Construction Waste Processing? A Lubrication Management Solution

Why Is Your Impact Crusher Bearing Overheating? A Practical Lubrication Strategy for Construction Waste Processing

If you're running an impact crusher in a construction waste recycling plant, you’ve likely seen it happen: the bearing temperature rises unexpectedly—sometimes by over 80°C above ambient. That’s not just a warning sign—it’s a red flag that could lead to unplanned downtime, costly repairs, or even catastrophic failure.

The Root Causes Behind Bearing Overheating

In harsh environments like those processing mixed building debris, three main factors typically cause lubrication breakdown:

• Lubricant starvation: Many operators follow generic schedules without accounting for dust load or operational intensity.
• Powder contamination: Fine concrete particles infiltrate seals and degrade oil viscosity within 48–72 hours if filters aren’t changed regularly.
• Thermal stress from misalignment: In high-moisture, high-dust conditions, traditional bearings often suffer from uneven heat distribution due to poor fit tolerance.

According to Zhengzhou Kuanglian Technical Manual, Section 4.2, "bearing temperatures exceeding 80°C during continuous operation indicate immediate need for inspection—not just monitoring."

Why Standard Maintenance Doesn’t Work for PF-1315 Crushers

Your PF-1315 model isn't built like a standard quarry machine. Its dual-bearing design and frequent start-stop cycles mean that every hour of operation puts unique strain on the grease system. Traditional greasing every 200 hours? That’s too long when dust levels exceed 50 mg/m³—a common scenario in urban demolition sites.

Here’s what we recommend based on real-world data from over 300+ installations across China:

A Real Case: What Happened When Filters Were Neglected?

At a recycling facility in Shenzhen, a team skipped filter changes for 14 days due to “low workload.” Within 48 hours, one bearing reached 125°C—over 100°C above normal—and failed completely. The repair cost was $1,800 in parts alone, plus 3 days of lost production. This wasn’t an isolated incident—it’s exactly why we emphasize proactive maintenance over reactive fixes.

Build Your Own Preventive Plan — It’s Not Rocket Science

You don’t need a full-time engineer to implement this. Start with:

1. Creating a custom lubrication schedule tailored to your site's dust index
2. Using precision-engineered digital components (like our 0.02mm tolerance shafts) to reduce friction-induced heat
3. Selecting synthetic oils rated for extreme pressure and moisture resistance (look for ISO VG 150 or higher)

Prevention is cheaper than repair—and more reliable than hope.