Hydraulic External Cast Iron Gear Flow Divider

These are externally meshed gear flow divider connected in a rigid, coaxial series. The cast-iron housing version is designed for heavy-duty, high-pressure, and high-impact applications-distinguishing it from lightweight synchronous gear flow divider with aluminum housings.

Functioning as positive-displacement mechanical synchronization components, they utilize a rigid drive shaft to force the gears to rotate at the same speed, thereby achieving fixed-ratio flow distribution without relying on the throttling principles used in flow divider valves.

Features
1. Housing: Ductile iron
Compared to aluminum alloy housings: Higher rigidity, impact resistance, pressure rating, and vibration resistance; suitable for continuous heavy-duty operation; heavier weight.
2. Moving components: External-mesh steel gears + bushings/sliding bearings; precision-ground gear sets; low leakage.
3. Sealing: Lip seals + O-rings; optional high-pressure PTFE composite seals.
4. Modularity: Freely configurable combinations of 2 to 12 sections; independent outlet per section, common inlet.
5. Optional configuration: Independent built-in relief valve for each section (end-of-stroke make-up/overload protection; eliminates cumulative synchronization errors at end-of-stroke; resists unbalanced loads).

Typical Applications

1. Heavy-duty multi-cylinder synchronous lifting (bridges, steel structures, large-scale equipment hoisting)
2. Construction machinery: synchronous multi-cylinder operation for cranes, shield tunneling machines, large bending machines, and hydraulic platforms
3. Mining and metallurgical equipment; synchronous opening and closing of large sluice gates
4. Synchronous leveling of heavy-duty outriggers on special-purpose vehicles

Precautions

1. First, determine the number of sections and the displacement per section to establish the total flow rate and the flow rate for each individual output; equal displacement results in equal output flow.
2. For operating conditions involving significant unbalanced loads, a built-in relief valve (for unbalanced load compensation) must be selected; otherwise, significant cumulative error will occur at the end of the stroke.
3. Hydraulic fluid cleanliness: NAS Class 9 / ISO 18/15. Due to the precision of the gear sets, impurities can easily cause gear wear and increase internal leakage, leading to a rapid decline in synchronization accuracy.
4. Piping design: Ensure that the length and bore diameter of the outlet lines are as uniform as possible to minimize additional synchronization errors caused by pressure drops in the piping.
5. Air must be purged from the circuit before startup; perform multiple no-load test runs to eliminate the effects of trapped air.

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