Marine Hand Lubricating Oil Pump

I. Product Overview

Marine Hand lubricating oil pumps are "safety guarantee equipment" in ship emergency lubrication systems, designed specifically for equipment lubrication during power outages, mechanical failures, and other emergencies. By manually rotating the crank handle to drive internal gear or plunger structures, they pressurize and deliver lubricating oil to friction pairs such as bearings and gears, preventing fatal damage from dry friction due to oil starvation. Constructed with cast iron (HT200), bronze alloy (ZCuSn5Pb5Zn5), or stainless steel (304) as the main material, they achieve self-priming and low-pressure delivery relying on hand crank power, without requiring electricity or hydraulic drive. They are compatible with mineral and synthetic lubricating oils with viscosity 30-400cSt. The pump body undergoes rust-proof treatment and precision assembly, with a service life of ≥10 years in -20℃~80℃ environments. It meets IMO Ship Machinery Emergency System Specifications (MSC.402(96)) and emergency equipment certification requirements of classification societies such as RS, LR, ABS, and CCS, widely used in emergency lubrication systems for key equipment like main engines, gearboxes, and stern tubes of cargo ships, oil tankers, fishing boats, and other vessel types.

II. Core Technologies and Material Characteristics

1.Material Selection and Performance

2.Key Technical Parameters

Flow range: 0.5-5L/min, with a single hand crank operation (30 rpm) delivering 0.8-1.5L of lubricating oil, meeting emergency lubrication needs of small and medium-sized equipment

Output pressure: 0.3-1.2MPa, suitable for low-pressure lubrication of friction pairs such as bearings and gears (oil film thickness ≥5μm)

Medium compatibility: Capable of conveying No.30 machine oil, No.46 anti-wear hydraulic oil, No.150 gear oil, etc., with temperatures ranging from -20℃ to 80℃ and viscosity 30-400cSt

Self-priming performance: Self-priming height ≥1.5m, priming time ≤30 seconds (for No.46 lubricating oil), capable of directly drawing oil from low-level lubricating oil tanks

Operating force requirement: Crank handle operating force ≤30N (approximately 3kgf), operable continuously by one person, enabling emergency lubrication system startup within 3 minutes in urgent situations

3.Safety and Emergency Design

Anti-reverse structure: Built-in ratchet one-way clutch allows crank handle rotation in one direction only, preventing lubricating oil backflow from reverse operation

Overload protection: Safety valve automatically opens (returning oil to the suction end) when outlet pressure exceeds 1.5 times the rated value, avoiding pipeline rupture due to overpressure

Impact resistance: Pump body and mounting base use elastic connection, capable of withstanding ship heel ±25° and trim ±15°, ensuring normal operation in emergency conditions

III. Technical Advantages and Innovative Design

1. Emergency Operation Convenience

Labor-saving transmission structure: Adopts "gear reduction + eccentric wheel" two-stage transmission. At a crank speed of 30 rpm, the plunger reciprocating frequency reaches 60 times/minute, increasing output flow by 50% compared to single-stage transmission while reducing operating force by 20%.

Visual oil level window: A transparent organic glass oil level window (oil-resistant material) installed on the pump body top enables direct observation of lubricating oil stock and flow status, avoiding dry cranking due to oil shortage.

2. Wear Resistance and Corrosion Resistance Enhancement

Bronze gear meshing optimization: ZCuSn5Pb5Zn5 gear tooth surfaces undergo precision grinding (Ra≤1.6μm). Combined with grease lubrication, tooth surface wear ≤0.01mm after 10,000 cranking cycles, ensuring long-term smooth operation.

Stainless steel component rust-proof treatment: 304 stainless steel crank handles and connectors undergo passivation treatment, showing no rust after 500 hours of immersion in 3% salt spray environment, suitable for high-humidity ocean-going conditions.

3. Ship Emergency Adaptability

Compact and portable design: Single unit weight ≤15kg (2L/min model) with a carrying hook and quick connector, enabling connection to multiple lubrication points via hoses for mobile emergency needs.

Low-temperature adaptability: In -20℃ environments, bronze pump chambers are filled with low-temperature grease (viscosity index ≥140) to ensure flexible crank rotation without jamming.

IV. Typical Application Scenarios

1. Emergency Lubrication of Power Equipment

Main engine bearing emergency oil supply: When a cargo ship main engine shuts down due to power outage, crew use stainless steel Hand lubricating oil pumps (flow 1-2L/min, pressure 1.0MPa) to deliver No.150 gear oil to crankshaft main bearings through preset pipelines. Supplying 2L every 10 minutes can maintain bearings in undamaged condition for ≥2 hours, buying time for repairs.

Gearbox meshing tooth lubrication: When the hydraulic system of a fishing boat reduction gearbox fails, cast iron hand pumps (flow 0.5-1L/min, pressure 0.6MPa) inject No.46 anti-wear hydraulic oil into gear meshing surfaces. With a crank speed of 20 rpm, an oil film ≥8μm thick is formed to prevent tooth surface scuffing.

2. Emergency Protection of Special Equipment

Stern tube seal lubrication: When oil supply to an oil tanker stern tube seal device is interrupted causing leakage, bronze alloy hand pumps (flow 1-1.5L/min, pressure 0.8MPa) inject special grease (400cSt viscosity) into seal rings, establishing a sealing oil film within 3 minutes and reducing seawater intrusion by ≥80%.

Windlass and winch lubrication: When a windlass cannot start its lubrication pump due to motor failure during port berthing, crew use portable stainless steel hand pumps (flow 0.8-1.2L/min) to supply oil to drum bearings, ensuring bearing temperature ≤60℃ during manual anchoring.

3. Extreme Environment Emergencies

Polar low-temperature lubrication: In -20℃ ice zone navigation, main engine emergency systems use stainless steel hand pumps with insulation sleeves to deliver low-temperature lubricating oil (30cSt viscosity) to refrigerator bearings, with crank operating force ≤35N ensuring adequate lubrication.

Tropical high-temperature lubrication: In 45℃ engine room environments, bronze hand pumps deliver No.68 high-temperature lubricating oil to diesel generator bearings at a stable flow of 1L/min, with pump body surface temperature ≤50℃ to prevent operator scalding.

V. Selection and Maintenance Specifications

1. Key Selection Parameters

Equipment type: Cast iron pumps for auxiliary machines and small gearboxes; bronze pumps for stern tubes and passenger ship equipment; stainless steel pumps for ocean-going ships and high-temperature environments

Flow matching: Configure 1.5 times the emergency lubrication demand of equipment. For example, a gearbox requiring 2L oil per hour needs flow ≥1L/min (based on oil supply every 2 minutes)

Pressure requirements: 0.3-0.8MPa for bearing lubrication; 0.8-1.2MPa for gear meshing surfaces

2. Maintenance Points

Daily inspection: Crank 30 turns weekly to check oil output smoothness and leakage, ensuring availability in emergencies

Regular maintenance: Disassemble and clean internal parts every 6 months, replace aging seals (oil-resistant nitrile rubber), and apply food-grade grease (for bronze components)

Oil quality management: Inspect lubricating oil quality in the oil storage chamber monthly, replace immediately if emulsification or impurities are found. Recommend using lubricating oils with viscosity index ≥120

3. Compliance Inspection

Annual classification society inspection focusing on verifying output pressure stability (fluctuation ≤±0.1MPa) and emergency operation convenience

Meets IMO requirements for ship emergency equipment, ensuring emergency oil supply can be activated within 5 minutes after main lubrication system failure

VI. Compliance and Certification

International standards: Complies with ISO 12922 marine hand pump performance standards and IMO MSC.402(96) emergency lubrication system specifications

Classification society certifications: Obtained type approval for Hand lubricating oil pumps from RS, LR, ABS, and CCS (including 1000 hand crank cycle tests)

Material compliance: Flow components meet GB/T 1173 (cast iron), GB/T 13808 (bronze), and GB/T 4237 (stainless steel) standards