Kawasaki K3V63DT-9N3D 145-5102 1455102 hydraulic pump for Caterpillar 312 midi excavator
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Seller's contacts
+86 189 289...
+86 189 2896 5241
France, Brie-Comte-Robert
Product Brief
This 145-5102 1455102 variable‑displacement axial piston pump acts as the core power source of the hydraulic system for Caterpillar 312 crawler excavator. It converts mechanical power from the engine into high‑pressure hydraulic flow, supporting digging, swinging, travelling and all other main working movements of the machine. Widely deployed in urban foundation excavation, road reconstruction, river dredging and small‑scale quarry operation projects, this aftermarket pump satisfies overhaul and replacement demands for equipment rental firms, field repair garages and cross‑border spare parts dealers across Africa, Southeast Asia and Middle East regions.
Working under continuous high‑pressure and fluctuating load conditions, the main hydraulic pump is vulnerable to internal piston wear, valve plate scratching, oil leakage and pressure loss. Once faulty, the excavator will show obvious symptoms including weak digging force, slow combined action, excessive hydraulic oil temperature, abnormal knocking noise and machine power drop. Unexpected pump failure will halt construction progress and bring high emergency repair costs for contractors and equipment owners.
Our aftermarket axial piston pump is manufactured following OEM‑equivalent standards for port layout, spline size, pressure parameters and mounting footprint. No extra modification is needed during pump replacement, enabling direct drop‑in installation and cutting machine downtime effectively. As a budget‑friendly substitute for expensive original hydraulic assemblies with long lead‑times, this pump delivers stable hydraulic performance under factory wholesale pricing, well suited for bulk purchasing by global construction machinery spare‑part suppliers.
Unique Product Competitive Advantages
1. Strict dimensional replication, purpose‑built for Caterpillar 312 excavator hydraulic system, non‑universal for other machine models
This axial piston pump is produced according to original installation dimensions, oil port position and pressure setting of 312 main pump. Accurate matching of friction pairs reduces internal leakage after installation. No auxiliary adapter or cutting work is required for assembly.
2. Premium friction pair components, enhanced durability for heavy‑duty cyclic construction work
Many low‑cost replacement pumps suffer rapid pressure drop and short service life caused by inferior valve plate and piston shoes. Our critical internal components adopt quenching and fine‑grinding process, improving wear resistance. It maintains stable output pressure under frequent load fluctuation, helping equipment owners cut pump replacement frequency.
3. Full‑range factory inspection before shipment to mitigate risk of unexpected on‑site breakdown
Every finished hydraulic pump undergoes factory pressure testing, flow detection and leakage inspection. Defective units are screened out before packing, avoiding rework trouble for maintenance teams and economic losses caused by sudden pump failure on job‑sites.
4. Cost‑effective aftermarket solution to control machinery operating budgets
Genuine OEM main hydraulic pumps carry high purchase cost and long delivery cycles. Our aftermarket pump achieves comparable working pressure and service performance at factory direct price, effectively lowering annual repair expenditure for enterprises running multiple excavator units.
5. Flexible global logistics solutions for wholesale buyers
In‑stock items can be dispatched within short time upon payment confirmation. Air freight supports urgent breakdown repair orders; consolidated sea freight and FCL shipment provide cost‑saving bulk purchasing options for long‑term distributors.
Factory Production Strength
Our manufacturing base concentrates on development and production of aftermarket hydraulic main pumps, travel motors and swing motors for various excavator brands. We own complete production workflow including alloy steel forging, high‑precision grinding, heat‑treatment processing and finished‑product hydraulic bench testing. Professional pressure simulation test benches simulate real‑site heavy‑load working environment to continuously optimize component wear resistance and pressure stability. Our hydraulic products are exported to multiple overseas markets and maintain long‑term stable cooperation with global construction machinery spare‑part wholesalers.
Frequently Asked Customer Questions
Q1: Can this hydraulic pump fit excavator models other than Caterpillar E312?
A1: Cross‑model application is not supported. Different excavator models adopt main pumps with different mounting dimensions, pressure setting and oil‑port layout. Please double‑check your machine model and OEM part number before placing orders.
Q2: What typical hydraulic malfunctions can this pump resolve?
A2: It fixes failures triggered by worn internal piston and valve plate, such as insufficient digging power, slow machine movements, high hydraulic oil temperature, internal oil leakage and abnormal pump knocking noise.
Q3: Can you offer volume‑based preferential price for large bulk orders?
A3: Yes, tiered discount is available according to purchase quantity. Full‑container sea transport arrangement can also be offered to reduce overall logistics cost.
Q4: How is the package for long‑distance ocean shipment?
A4: Anti‑rust oil is fully coated on all metal surfaces. The whole pump is wrapped with waterproof shock‑proof PE film, then fixed inside reinforced export plywood case, to avoid collision deformation and moisture corrosion during long overseas transit.