Belparts brand (premium aftermarket): Manufactured in-house to OEM dimensional specifiions using the same material grades and machining standards. Core components use 42CrMo alloy steel hardened to HRC 58-62, processed on German CNC lines to ±0.01mm accuracy. Every unit passes individual bench testing. Cost is significantly lower than genuine parts while meeting equivalent performance requirements for most appliions.

Genuine OEM parts: Sourced through our authorized supply channels directly from original Japanese and European brands — Kawasaki, Nachi, KYB, Toshiba, Nabtesco, Rexroth (Bosch) — and original machine brands including Hitachi, Komatsu, and erpillar. These are the original factory components, recommended for fleets under manufacturer warranty, safety-critical appliions, or where original parts are contractually required.

Every Belparts unit undergoes individual bench testing covering four parameters before shipment:

• Pressure test — confirms rated operating pressure is achieved
• Leakage test — verifies all sealing faces and internal clearances
• Load test — confirms torque output meets specifiion
• Efficiency test — validates volumetric and mechanical efficiency

Components are assembled in an automated dust-free workshop to prevent contamination, which is a primary cause of premature hydraulic failure. All production is manufactured, tested, and traced under one integrated quality system.

In hydraulic systems, internal clearances between moving parts are measured in microns. Even minor dimensional deviation causes internal leakage, which reduces system pressure, increases heat generation, accelerates wear, and shortens service life. Correct precision ensures the motor or pump reaches its rated efficiency and operates reliably under the full working pressure of the excavator hydraulic circuit.

Belparts uses German CNC production lines for motor housings and Japanese equipment for pump housings, achieving machining tolerances of ±0.01mm for applicable critical dimensions. This is consistent with the tolerance range required by original equipment specifiions.

Yes. Sample orders are accepted for most stock items. Samples allow you to verify dimensional fitment, packaging quality, and documentation before committing to a larger volume. Sample lead times, pricing, and freight arrangements can be confirmed during the quotation stage. We recommend testing the sample under actual working conditions on the machine before placing a production order.