Product Overview
The KP 2/62 S10G YO0 4DL2 is a high-performance external gear pump from Germany’s KRACHT KP2 Series. KRACHT is a family-owned enterprise founded in 1911, headquartered in Werdohl, Germany, and a world-renowned specialist in fluid control. The KP Series high-pressure gear pumps are primarily used in oil-hydraulic systems and represent the core of KRACHT’s high-pressure gear pump product line.
This unit belongs to the KP2 Sub-Series with a displacement of 62 cm³/rev. The KP2 Series features hydraulic axial clearance compensation with the ability to withstand high dynamic loads and insensitivity to pressure peaks and continuous vibrations. The pump housing is manufactured from high-strength grey cast iron, with gears made from case-hardened steel per DIN 17210, precision ground and honed. Bearings feature a steel framework with PTFE-lead composite material coated with a bronze wear layer.
This model is specifically optimized for wind power low-temperature applications and various heavy-duty industrial applications. KRACHT gear pumps deliver a service life 2-10 times longer than conventional gear pumps when handling fluids containing impurities. The series performs exceptionally well in 24/7 continuous operation under heavy-duty conditions.
Key Interchangeability Advantage: Our KP2 series gear pumps are manufactured to strict German KRACHT original design specifications, ensuring 100% direct interchangeability with original units. All mounting interfaces, flange dimensions, shaft configurations, and port positions are identical to the original product – no modifications required. Every pump undergoes 100% factory performance testing under simulated operating conditions (covering rated pressure, peak pressure, and full speed range performance curves), guaranteeing plug-and-play reliability with zero performance deviation.
Model Code Breakdown (based on KRACHT KP Series designation rules):
KP = Series: High Pressure Gear Pump
2 = Sub-series: KP2 (displacement 20–62 cm³/rev)
62 = Displacement: 62 cm³/rev
S10G = Shaft type and flange configuration code
YO0 = Seal and design configuration code (low-temperature/special application optimized)
4DL2 = Specific design code
Technical Specifications
KP 2/62 S10G YO0 4DL2
Product Series: KRACHT KP2 Series High-Pressure External Gear Pump
Brand: KRACHT (Germany)
Pump Type: External gear pump (sealed bearing pump) with hydraulic axial clearance compensation
Displacement: 62.0 cm³/rev
Maximum Operating Pressure: 300 bar
Rated (Nominal) Pressure: 12 MPa (120 bar)
Maximum Speed: 3000 rpm
Flow Rate (@1500 rpm): Approx. 93 L/min
Nominal Flow Rate: 80 L/min
Media Viscosity Range: 10 – 600 mm²/s
Recommended Viscosity Range: 30 – 45 mm²/s
Media Temperature: Up to 150℃
Inlet Pressure: -0.4 (vacuum) to 2 bar
Peak Inlet Pressure: 5 bar
Housing Material: Grey cast iron
Gear Material: Case-hardened alloy steel per DIN 17210, precision ground and honed
Gear Teeth: Z=14, specially shaped tooth profile
Bearing Type: Steel framework PTFE-lead composite plain bearings with bronze wear layer
Seals: NBR (≤90℃) or FKM (≤100℃)
Mounting: Flange type
Port Connections: Flange type
Direction of Rotation: Clockwise or Counter-clockwise optional
Mounting Position: Any
Key Technical Advantages
1. Hydraulic Axial Clearance Compensation for High Efficiency Across All Pressures
The KP2 Series achieves high pressure through axial clearance compensation, automatically implemented by floating guide bushings mounted on both sides of the gears. High-pressure oil is introduced to the back of the floating side plates, automatically pressing against the gear faces to compensate for wear gaps in real time. The floating guide bushings compensate based on viscosity design, ensuring high volumetric efficiency at every operating point. High volumetric efficiency is maintained across the entire pressure range with minimal flow衰减 over long-term use.
2. Sealed Bearing Pump Construction + 14-Tooth Low-Pulsation Design for Long Service Life and Low Noise
The KP Series is a sealed bearing pump, with all necessary components housed in a high-strength housing closed by mounting flange covers and end covers. Through the use of high tooth count (Z=14) with specially shaped teeth and appropriately placed relief grooves in the trapped oil zone, displacement fluctuation and pressure pulsation are effectively reduced. These design features significantly reduce noise from the hydraulic pump and the entire system, with minimal flow fluctuation – ideal for lubrication systems with strict noise and flow stability requirements.
3. High-Strength Grey Cast Iron Housing for Demanding Conditions
Both the pump housing and mounting flange are manufactured from grey cast iron, delivering better dynamic load performance with greater resistance to pressure shocks and continuous vibrations. This material choice makes the KP2 Series particularly suitable for wind power low-temperature applications, metallurgy, mining, and the most stringent operating conditions. With high rigidity and vibration resistance, the pump supports 24/7 continuous operation.
4. Excellent Low-Temperature Adaptability and Wide Media Compatibility
This model is specifically optimized for wind power low-temperature applications, maintaining stable performance under low-temperature conditions. The KP Series high-pressure gear pumps are suitable for media temperatures up to 200℃ and viscosities up to 1500 mm²/s. They can handle heavy oils, diesel, coal tar, and other low-grade combustion oils containing non-metallic impurities. Depending on operating temperature and media, NBR or FKM seals can be selected to meet diverse application requirements.
5. Modular Design for Flexible Configuration
The KP Series features a modular standard design with multiple configuration options. The KP2 sub-series offers displacements from 20 to 62 cm³/rev (including 20/25/28/32/40/50/62), enabling precise matching to diverse application requirements. Multiple pumps can be connected in series with identical or different models.
Application Areas
Wind Power: Wind turbine gearbox lubrication and hydraulic control systems – this model is specifically optimized for low-temperature wind power applications
Large Gearbox Oil Circulation Lubrication: Lubrication supply for long-term continuous operation equipment
Metallurgy and Heavy Equipment: Hydraulic oil supply systems for steel industry and mining equipment
Petroleum and Chemical Industry: Fuel injection applications, heavy oil/diesel transfer
Road Construction and Asphalt Mixing Plants: Fuel injection and transfer systems
Forced Lubrication Systems: Applications requiring stable operating pressure and long-term continuous operation
Marine and Offshore Engineering: Marine hydraulic systems, fuel transfer
Power Generation: Power plant auxiliary oil pumps, lubrication systems
Expert Maintenance Tips
1. Model Confirmation and Selection
The KP 2/62 S10G YO0 4DL2 has a displacement of 62 cm³/rev, belonging to the KP2 sub-series (displacement 20–62 cm³/rev).
This model features flange mounting and flange port connections. Verify original mounting interface type during selection.
This model is specifically optimized for wind power low-temperature applications. For other temperature conditions, select NBR (≤90℃) or FKM (≤100℃) seals based on media temperature.
Both clockwise and counter-clockwise rotation directions are available – verify original drive direction during selection.
2. Pre-Installation Checks
KP Series pumps have a fixed rotation direction – verify matches system drive direction before installation.
Confirm mounting flange type and drive shaft specifications precisely match system interface.
Never use hammer-driven installation – always use proper tools.
Axial loads are not permitted – an outboard bearing must be installed to absorb external loads.
3. First Start-Up & Media Priming
Prime the pump housing with clean media before first start-up; ensure suction line is fully filled – never run dry.
Inlet pressure must be maintained within -0.4 (vacuum) to 2 bar, with peak not exceeding 5 bar.
Media viscosity should be maintained within 10 – 600 mm²/s, with recommended range 30 – 45 mm²/s.
Media temperature must not exceed 150℃.
4. Filtration Requirements
Ensure media contains no large solid particles to prevent gear and bearing wear. KRACHT gear pumps deliver 2-10 times longer service life than conventional pumps when handling fluids with impurities, but reasonable filtration is still recommended.
Regularly monitor fluid cleanliness to prevent contaminants from accelerating gear and composite bearing wear.
5. Operating Monitoring
Maximum operating pressure must not exceed 300 bar.
If abnormal noise or pressure fluctuation occurs, first check suction lines for leakage or blockage.
Regularly check torque on pump and piping connection bolts to prevent loosening from vibration.
For models with integral safety valves, do not operate continuously in relief mode.
