The "Joint" Revolution in Construction Machinery - Dual BI-Metal Flange Bearings
When Steel Giants Meet Micron-Level Technology
In mines, ports and tunnels, every piece of heavy machinery is pushed to the edge:
A 40-ton excavator's idler must endure >65 N/mm² of impact the instant the bucket bites.
A portal crane's sheave keeps turning at 260 °C while salt spray gnaws at every surface.
A bulldozer's track rollers drown in mud and grit, and traditional bronze bushings seize in three days.
Now, a single dual-metal flange bearing makes these nightmares history.
Why This Bearing?
1. Dual-Metal Skeleton & Sinew
Steel back absorbs shock: low-carbon steel backbone for extreme loads.
Copper alloy "cartilage": sintered CuPb10Sn10 or lead bronze, friction coefficient down to 0.04, wear only 1/5 of classic bushings.
2. One-Piece Flange Design
Built-in thrust collar handles combined radial + axial loads-no extra washers.
Four-to-eight laser weld spots on the flange face triple anti-slip strength, eliminating "race rotation."
3. Solid-Lubrication Black Magic
Diamond oil pockets in the copper layer are charged with graphite + MoS₂-run 100 h dry without seizure.
| Machine | Location | Pain Point | Dual-Metal Flange Fix | Result |
|---|---|---|---|---|
| 45 t Excavator | Track roller | Mud + shock, 3-day bushing life | Steel-backed bronze + thrust flange, maintenance-free | Service life 9 months |
| Portal Crane | Sheave block | Salt fog + axial thrust | Flange seal + anti-galling copper | 50 h dry run, zero jamming |
| TBM | Screw conveyor | Abrasive spoil + misalignment | Flange location + solid lube, no external system | 80 % fewer shutdowns |
Engineer's Checklist
Load capacity: ≤65 N/mm²
Temperature span: –100 °C to +260 °C
Shaft range: Ø20 mm – Ø500 mm (custom)
Maintenance-free cycle: ≥2 000 h
Make Every Machine an Unstoppable Warrior
From arctic –40 °C mines to 260 °C steel mills, dual-metal flange bearings guard the heartbeat of steel giants with micron-level precision.
Upgrade today-turn maintenance cost into yesterday's problem.
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