CEMA Idler Test Report
MANTIS Conveyor Products® — Put to the Test
What We Tested:
MANTIS Conveyor Products® CEMA Idler
Why We Tested:
Bearing contamination can cause idlers to spin roughly or seize. That leads to downtime – and time is money. To shield bearings from contaminants that can affect performance and ROI, we designed MANTIS CEMA-rated idlers with four layers of protection:
- External Nylon Labyrinth Seal
- Secondary Internal Labyrinth Seal
- Chamber Lock Technology
- Proprietary Defender® Bearings
How We Tested:
Our CEMA Idler Slurry Tester simulated loading per CEMA Standard 502 at a belt speed of 400 FPM for the NHI MANTIS CEMA idler and two leading competitors. Instead of just water spray, we ran multiple tests using a slurry consisting of chemicals and particles designed to corrode, penetrate, and abrade the test article.
What We Found:
After 40 hours of slurry testing, we manually disassembled all three idlers.
Competitor #1 Idler:
- Completely seized.
- Excessive contamination in both bearings throughout the inner cavity.
Competitor #2 Idler:
- Idler spun very rough.
- Heavy contamination in one bearing with evidence of slurry pass-through.
- Second bearing also showed signs of contamination.
MANTIS CEMA Idler:
- No degradation in external labyrinth seal.
- Internal labyrinth seal maintained full contact with bearing housing.
- Slurry fully contained within chamber lock.
- No debris on bearing seals.
- No contamination inboard of bearings.
- ZERO contaminates found in bearing grease!
Conclusion:
MANTIS CEMA Idlers stand up to the toughest conditions and keep your line moving.