Φ400 Electric Motorized Pulley Heavy Duty Split Type Support Bracket Model 404 HT250 Cast Iron M30 Bolts 210kN

Φ400 Electric Motorized Pulley Heavy-Duty Split-Type Support Bracket Model 404 HT250 Cast Iron M30 Bolts 210kN

Model 404 Heavy-Duty Electric Motorized Pulley Support Bracket (Bearing Housing)

The Model 404 support bracket is a heavy-duty split-type bearing housing designed for Φ400 medium electric motorized pulleys in demanding industrial environments. Cast from HT250 high-strength grey cast iron with an overall thickened box body, double-layer reinforcement ribs, and a wide split mating surface, it delivers 210kN radial load capacity for mining, quarry, and material handling conveyor systems.

Key Specifications

Product Features

• High-Strength HT250 Casting: Superior tensile strength compared to HT200, specifically engineered for medium to heavy-duty mining and quarry conveyor loads.
• Thickened Box Body with Double Ribs: Overall reinforced structure with double-layer reinforcement ribs delivers exceptional impact resistance and deformation resistance under heavy loads.
• Wide Split Mating Surface: Extended split joint area provides stronger locking rigidity, preventing bearing bore deformation and loss of roundness during operation.
• Large-Bore Bearing Chamber: Oversized bearing housing accommodates large spherical roller bearings, significantly boosting radial and axial load capacity.
• Precision Machined: Tightly controlled coaxiality and flatness tolerances ensure smooth, vibration-free drum rotation throughout extended operating cycles.

Manufacturing Process

Coated Sand Precision Casting → Stress-Relief Annealing → Heavy-Duty Boring and Milling → Drilling and Tapping → Quality Inspection

Applications

Purpose-built for Φ400 medium electric motorized pulleys in sand and gravel mining conveyors, coal belt conveyor systems, dock-side medium-duty handling lines, construction waste conveying equipment, and grain heavy-duty transfer lines.

Installation Notes

• Use matching M30 high-strength bolts exclusively — standard low-strength bolts are prohibited and will cause joint failure.
• Apply oil-resistant sealant on split mating surfaces to prevent dust and moisture ingress into the bearing chamber.
• Mounting plane height difference between both brackets must not exceed 0.05mm to prevent main shaft bending.
• In sand, gravel, and dust environments, replenish grease and clean bearing chamber dust accumulation every two weeks.
• During complete assembly lifting, load must be simultaneously applied to both double-ear mounting holes — single-point lifting is strictly prohibited.

Packaging

Finished precision parts: Individual bubble wrap with heavy-duty carton boxes. Bulk raw castings: Heavy steel pallet with waterproof stretch film wrapping and corner guards for edge protection.

electric motorized pulley heavy duty

heavy duty pulley drum

split type pulley drum

Φ400 Electric Motorized Pulley Heavy Duty Split Type Support Bracket Model 404 HT250 Cast Iron M30 Bolts 210kN Images