CBTLZTD-F6.3/F6.3-AF3 Gear Pump | Engineering Drilling Machinery Hydraulic Pump Replacement

Genlu Hydraulic proudly introduces our heavy-duty, industrial-grade CBTLZTD, CBTL, CBKP, CBT4, CBQT, CBML, and CBVH Series high-pressure hydraulic gear pumps, engineered explicitly for core drilling, foundation anchoring, quarry mining, and fully hydraulic crawler-type drilling machinery operations. This series is fully configured as a premium, high-value, drop-in replacement for mainstream hydraulic power grids built into engineering drilling units, adapting flawlessly to replace primary assemblies like CBTLZTD-F6.3/F6.3-AF3 (a high-pressure, equal-displacement tandem dual gear pump). Serving as the robust hydraulic source on drilling rigs, this pump cleanly distributes fluid to main winches, power head micro-adjustments, pilot controls, or crawler track oscillation systems. Incorporating an advanced floating bushing axial-pressure auto-compensation architecture paired with high-hardness anti-scuffing side plates, it safely withstands intense high-frequency cyclic shock loads generated during continuous rock fracturing and deep-hole drilling. Genlu guarantees 100% Drop-in Interchangeability across standard SAE/national-standard mounting flanges (A/AF profiles), splined drive shafts (F-spec), main fluid port dimensions, and bolt spacings compared to OEM components. Every single CBTLZTD pump assembly undergoes rigorous 100% dynamic simulation full-load testing on our digital benches to certify elite volumetric efficiency and absolute structural life in grueling mining fields.

Technical Specifications 

• Product Series: CBTLZTD Series Engineering Drilling Machinery High-Pressure Dual Gear Pump (Spanning CBKP, CBT4, CBTL, CBQT, CBML, CBVH configurations)

• Specific Identification Code: CBTLZTD-F6.3/F6.3-AF3

• Nominal Operating Pressure Rating: F-Class (Rated continuous pressure 20.0 MPa / 200 bar; peak transient pressure up to 25.0 MPa)

• Geometric Displacement Configuration:

  • Front Pump Segment: 6.3 cc/rev

  • Rear Pump Segment: 6.3 cc/rev (Equal-displacement tandem flow; separate circuits with zero cross-talk)

• Mounting Flange Layout: Code A (Industry standard 2-bolt diamond/oval mounting pattern; high-rigidity alignment alignment)

• Drive Shaft Specification: Code F (Standardized involute splined shaft; handles extreme engine PTO or splitter-gearbox torque output)

• Fluid Port Interfacing: Code 3 (Side inlet / Side outlet arrangement; high-pressure SAE flange or high-integrity threaded ports)

• Maximum Permissible Rated Speed: 2500 rpm

• Pump Housing Structural Material: High-tensile, high-density extruded monoblock aluminum alloy or specialized ductile iron housing (tailored to field requirements)

Key Technical Advantages:

• Axial Auto-Compensation Floating Bushings: The internal core of the CBTLZTD-F6.3/F6.3-AF3 features heavy-duty DU composite bearings and unique “3-shaped” floating bushings. By routing discharge pressure behind the bushings, the assemblies load automatically against the gear faces as working pressures spike. This adaptive seal mechanism ensures the volumetric efficiency stays firmly above 95% even during continuous 20.0 MPa deep-hole rock drilling, fully preventing flow degradation caused by thermal thinning.

• Precision-Forged, Anti-Shock High-Torque Gear Sets: When a drilling rig punctures alternating rock formations, the circuit sustains severe hydraulic shock waves. The internal gear set is forged from premium alloy steel, treated with full high-frequency carburizing and quenching to reach HRC62 hardness, and micro-ground via multi-axis CNC. An asymmetric tooth profile diminishes fluid entrapment pressures, lowering operational decibels and delivering outstanding fatigue resistance.

• Completely Isolated Dual-Stage High-Pressure Radial Shaft Seals: Serving as a heavy-duty tandem pump, the CBTLZTD features complete physical isolation between the front (6.3cc) and rear (6.3cc) fluid chambers using a specialized high-pressure twin-lip skeleton seal barrier. If one circuit (such as the high-load crawler drive line) suffers localized cavitation or ingests grit, the physical seal wall blocks contaminants from entering the companion pilot control system, preserving essential machine safety and rig maneuverability.

• Highly Flexible Multi-Stage Modular Integration (CBQT / CBML / CBVH Platforms): Backed by Genlu’s advanced modular manufacturing tracks, this series supports extensive customization. Beyond standard equal-displacement dual pumps, the modular frame can be stacked via a continuous through-shaft to build triple or quadruple gear configurations (like CBQT/CBML setups). These can be fitted with relief or constant-flow valving blocks to handle multi-point flow distribution for winching, rotating, crowding, and mud-pump auxiliary lines.

Application Areas:

• Civil Infrastructure & Geotechnical Anchorage Rigs: Primary power or pilot auxiliary delivery for full-hydraulic crawler anchor drill rigs, photovoltaic solar pile drivers, tunnel drilling platforms, rotary rigs, and slope-protection wire-stone anchoring fleets.

• Quarry Extraction & Surface/Underground Blasting孔 Fleets: Explosion-proof full-hydraulic underground coal-mine drill rigs, open-pit down-the-hole (DTH) blast drillers, and underground rock-drilling jumbo rigs.

• Trenchless Utilities & Hydrological Water Well Drills: Micro-tunneling pipe jacks, horizontal directional drilling (HDD) setups, and high-depth truck-mounted water well drilling packages.

Expert Maintenance Tips:

• Guard Aggressively Against Suction Gland Air Leaks and Slurry Ingestion (The No. 1 Field Killer): Drill sites are heavily contaminated with wet mud and airborne rock dust. During a pump swap, you must rigorously confirm that the main suction hose hose-clamp is locked air-tight. Any micro-crack or loose coupling under high suction vacuum allows silica-laden dust and muddy fluid into the gear teeth. This causes rapid abrasive wear, flattening the gears and bushings within short service windows.

• Strictly Prohibit Dry Start-Ups During Field Installations (Anti-Seizure Protocol): Once the new gear pump is bolted into position, you must flood the intake (IN) port with clean hydraulic oil before connecting the main suction hoses. Rotate the input shaft several turns by hand to distribute an oil coating across the floating bushings and DU sleeve liners. Starting the diesel engine dry forces the pump to run without lubrication while air purges from the lines, causing thermal scuffing on aluminum faces in seconds.

• Deploy High-Capacity Return Filtration Lines with Magnetic Barriers: Rigger motors and hoist cylinders continuously generate micro-metallic wear particles during high-impact directional switching. It is highly recommended to mount a precision return filter ($\le 10 \mu m$ absolute) equipped with a high-strength magnetic core on the reservoir return manifold. Clean this magnetic core every two months; monitoring the trapped metallic dust provides an accurate health indicator for the entire hydraulic system.