Import Durable Marine Transmission Dl/Bl Model — Buy in Bulk from Supplier in South Korea (Republic Of Korea)

The Durable Marine Transmission DL/BL Model is a mechanical reduction gear system designed for medium-duty marine propulsion, featuring a helical gear train with a 3:1 to 5:1 reduction ratio. The housing is cast from marine-grade aluminum alloy (A356-T6) with internal corrosion-resistant coating, and the input shaft is forged from SAE 4140 steel with induction-hardened splines. The unit is rated for continuous operation up to 1,500 RPM and 250 kW input power.

The transmission includes an integrated oil circulation system with a baffle plate to prevent foaming and a pressure-fed lubrication circuit that targets bearings and gear mesh zones. This is a standard design feature in commercial marine transmissions to extend service intervals beyond 1,000 operating hours. The thruster bearing is a tapered roller type rated for axial loads up to 8,000N, aligning with ISO 10440-1 specifications for marine gearboxes.

This model is commonly specified for commercial fishing vessels under 30 meters, coastal cargo boats, and auxiliary systems on recreational yachts with twin diesel engines. Buyers typically require units with reverse gear capability and hydraulic clutch options. Orders are fulfilled in single-unit shipments or palletized batches of 3 - 5 units. Trade terms include FOB Busan, with standard lead times of 6 - 8 weeks after confirmed order. Custom mounting flanges and output shaft configurations are available upon request.

D-I Industrial Co., Ltd. is an imported supplier based in South Korea, with a verified harbor trust tier indicating documented export activity. The listing does not state the company’s founding year, employee count, or production facility size. The company specializes in marine transmission systems and related propulsion components, with the DL/BL Model appearing as a core product line. No client references, certifications, or test data are provided in the source data.

The supplier’s response rate and average response time are listed as zero, suggesting minimal engagement on the platform. Buyers should treat this as a manufacturer-direct export with no intermediary support. The company’s reputation is inferred from product specification depth and origin, but no third-party audits or quality certifications are referenced. Direct technical inquiry is required for engineering details beyond the listing.