HYDRECO 015801 UMOE SCHAT Marine Winch Hydraulic Gear Motor S1A7248

HYDRECO 015801 UMOE SCHAT Marine Boat Winch Hydraulic Gear Motor (S1A7248/015801/3A)

The HYDRECO 015801 (Model: S1A7248/015801/3A) is a hydraulic gear motor engineered specifically for demanding duty cycles in UMOE SCHAT-HARDING emergency boat winches, rescue boat launch appliances, and life-saving appliance (LSA) davit recovery systems.

This unit converts hydraulic power into the high-torque, controlled rotational drive required for controlled hoisting, safe gravity-lowering assist, and continuous recovery operations under extreme offshore marine conditions. Designed with cast-iron housings to resist shock and saltwater exposure, the unit operates seamlessly with closed-loop or open-loop marine HPU (Hydraulic Power Unit) feeds and integrates built-in mounting flanges matching OEM Umoe Schat winch gearboxes.

Model Details:

• Manufacturer / Brand: HYDRECO / Umoe Schat-Harding OEM Partner
• OEM Part Number (MPN): 015801
• Full Assembly / Type Designation: S1A7248/015801/3A
• Application Classification: Emergency Boat Winch Hydraulic Drive / Davit Hoisting Motor

Features

1. Class-Specific Marine Torque Dynamics: Optimized gear tooth profile and heavy-duty journal bushings deliver smooth starting torque under full boat capacity load without system shudder or slip.
2. Corrosion-Resistant Cast Iron Envelope: Robust ductile iron construction impervious to continuous deck salt spray, vibration, and torsional spikes experienced during rough sea boat recovery.
3. Bi-directional Capability: Engineered for dual-flow port dynamics, allowing controlled power hoisting and reverse drive functions with minimal internal slippage.
4. Direct-Coupled Interface: Standardized marine davit mounting footprint designed to bolt straight into Umoe Schat winch gearsets without adapter plates.
5. Integrated Dynamic Sealing: Outfitted with high-spec FKM (Viton) rotary shaft seals engineered to retain oil viscosity and hold internal pressure against extreme temperature cycling and harsh offshore environments.

Compatibility

• Umoe Schat-Harding Davit Systems: Compatible with BE-series (e.g., BE 4.5, BE 6), FME-series (FME 3.3, FME 3.3 SA, FME194), and VIP-series davit winch drives.
• Lifeboat & Rescue Winch Drives: Suited for Umoe Schat W-Series winches (W50, W80, W120, W150) and CWH/WH series free-fall / gravity recovery assist winches.
• Auxiliary Marine Cranes & Davits: Single-arm davits, gravity luffing arm winches, fast rescue boat (FRB) cranes, and off-load recovery winch gear trains.

Part Number Cross-References

• Hydreco Internal Ref: S1A7248 / S1A7248-015801-3A
• Umoe Schat / Schat-Harding Ref: 015801
• Davit Winch Drive Assembly Code: S1A7248/015801/3A
• Compatible OEM Systems: Palfinger Marine / Umoe Schat LSA hydraulic winches

Frequently Asked Questions

What does the part designation S1A7248/015801/3A indicate?

This designation represents the specific Hydreco pump/motor displacement series (S1A), internal displacement and porting code (7248), mapped to the Umoe Schat-Harding inventory number (015801) and revision tier (3A) configured to match OEM davit winch gearboxes.

Can this unit be used both as a hydraulic pump and as a hydraulic motor?

While gear configurations in this series share architecture with heavy-duty gear pumps, the S1A7248/015801/3A is configured with bidirectional internal porting and external drain paths specifically optimized to operate as a high-torque recovery motor for marine davit hoists.

Is this motor directly compatible with Palfinger Marine davits?

Yes. Palfinger Marine acquired Umoe Schat-Harding. Winches originally equipped with Schat-Harding 015801 drives match this unit directly in terms of flange profile, shaft dimension, and hydraulic duty ratings.

What is the recommended hydraulic fluid for this unit in cold-climate voyages?

For general global merchant service, ISO VG 46 is standard. For Arctic or cold-climate trading (temperatures regularly dropping below -10°C), switch to high-viscosity-index (HVI) low-pour-point hydraulic oil such as ISO VG 32 to prevent pump starvation and sluggish recovery speeds during safety drill operations.