CP1-63-P-10R-36 HYTEK Hydraulic Internal Gear Pump 63cc 250bar

Product Overview

The CP1-63-P-10R-36 is a HYTEK CP1 Series internal gear pump. HYTEK is a well-known Chinese hydraulic component manufacturer whose CP Series internal gear pumps are renowned for high pressure, low noise, and long service life, widely used in injection molding machines, die-casting machines, shearing machines, and press brake hydraulic systems.

The CP1 Series utilizes internal gear principles—an inner gear (rotor) drives an outer gear (idler) in the same direction, creating negative pressure at the inlet to draw fluid in, while the meshing gears at the outlet displace fluid under pressure. The series offers displacements from 25 to 63cc, with rated pressures up to 32 MPa. The CP1-63-P-10R-36, as the largest displacement model in the series, features 63 cc/rev displacement, delivering substantial flow output to meet the demands of high-load hydraulic systems.

As an original specification model within the HYTEK CP1 line, this product enables direct form-fit-function interchangeability with original HYTEK units—no modifications to piping or mounting interfaces required. Our replacement solution strictly adheres to HYTEK technical standards and undergoes 100% simulated in-service testing to ensure performance, reliability, and service life identical to OEM products. It is the ideal choice for industrial hydraulic system maintenance and upgrades.

Technical Specifications 

Applicable Model (Primary):

• CP1-63-P-10R-36

Interchangeable Models (Same Series):

• CP1-25-P-10R

• CP1-32-P-10R

• CP1-40-P-10R

• CP1-50-P-10R

• CP0-08-P-10R

• CP0-16-P-10R

• CP2-100-P-10R

Series Technical Specifications (per HYTEK and industry technical data):

• Product Series: HYTEK CP1 Internal Gear Pump

• Pump Type: Internal Gear Pump

• Body Material: High-Strength Cast Iron

• Mounting: Standard Flange Mounting

• Shaft Type: 10-Tooth Press Fit Shaft

• Port Configuration: Rear Inlet and Outlet Ports

• Rotation Direction: Right-Hand (viewed from shaft end)

CP1-63-P-10R-36 Detailed Specifications:

• Geometric Displacement: 63 cm³/rev

• Rated Operating Pressure: 25 MPa (250 bar / 3,625 psi)

• Maximum Operating Pressure: 32 MPa (320 bar)

• Peak Pressure: 35 MPa (350 bar)

• Maximum Speed: 3,000 min⁻¹

• Minimum Speed: 600 min⁻¹

• Operating Temperature Range: -15°C to +80°C

• Fluid Compatibility: Mineral Hydraulic Oil, Anti-Wear Hydraulic Oil

• Viscosity Range: ISO VG32 / VG46 Recommended

• Filtration Requirement: ISO 4406 19/17/13

• Weight: Approx. 25 kg

• Dimensions: Approx. 33 × 22 × 22 cm

Key Technical Advantages

1. Internal Gear Design for Ultra-Low Noise and Pulsation
The CP1 Series utilizes internal gear principles with inner and outer gears rotating in the same direction, complemented by a unique crescent separator structure. This design significantly reduces pressure and flow pulsation, delivering exceptionally quiet and smooth operation—ideal for noise-sensitive working environments.

2. Axial and Radial Pressure Compensation for High Volumetric Efficiency
Axial and radial pressure compensation design maintains high volumetric efficiency even under low-speed and low-viscosity conditions. This innovative technology effectively minimizes internal leakage and enhances overall system energy efficiency.

3. High-Strength Cast Iron Housing for Superior Durability
The pump body is manufactured from high-strength cast iron, providing excellent rigidity and impact resistance. Combined with modified involute, short-tooth internal gear design, the gear pair delivers significantly enhanced wear resistance and fatigue strength, ensuring long-term stable operation under high-pressure conditions.

4. Wide Speed Range with Excellent Contamination Resistance
The CP1 Series offers a broad speed range (600-3,000 rpm), flexibly adapting to various flow requirements. The pump exhibits low sensitivity to fluid contamination, maintaining reliable operation under typical industrial fluid cleanliness conditions, effectively reducing maintenance frequency and costs.

5. Modular Design with Tandem Pump Capability
The CP Series supports tandem pump configurations, facilitating system integration and expansion. The simple construction and easy maintenance, combined with standardized mounting dimensions, ensure complete interchangeability with original products, significantly reducing spare parts inventory costs and downtime.

Application Areas

• Injection Molding Machinery: Injection molding machine hydraulic systems

• Die-Casting Machinery: Die-casting machine hydraulic systems

• Shearing & Press Brake Machines: Shearing and press brake hydraulic systems

• Forklifts: Forklift hydraulic systems

• Industrial Hydraulic Power Units: Hydraulic power sources for various industrial equipment

• Construction Machinery: Small construction equipment hydraulic systems

Expert Maintenance Tips

1. Installation Precautions

• Verify that the system’s required rotation direction matches the pump’s identification marking before installation. This series features right-hand rotation (viewed from shaft end).

• Ensure coaxial alignment between the pump and drive shaft; flexible couplings are recommended to avoid radial loads on the pump shaft.

• The suction line diameter must not be smaller than the pump inlet port size to prevent cavitation.

2. Fluid Management

• Use anti-wear hydraulic oils conforming to ISO VG32 / VG46 standards.

• System fluid cleanliness must meet ISO 4406 19/17/13 or higher.

• Prime the pump by filling the housing with hydraulic fluid through the suction port before initial start-up. Never run the pump dry.

3. Start-Up & Commissioning

• Use jog start method for initial start-up; verify correct rotation direction before continuous operation.

• Allow the pump to run under no-load (low pressure) conditions for 2-3 minutes to purge air and ensure proper lubrication.

• Gradually increase to operating pressure while monitoring noise, temperature, and system pressure for normal operation.

4. Routine Maintenance

• The CP1 internal gear pump itself is maintenance-free; however, regular maintenance of the entire hydraulic system is essential for trouble-free pump operation.

• Inspect system fluid cleanliness and condition every 1,000-2,000 operating hours.

• Regularly replace return line filters and suction strainers to prevent contaminant ingress into the pump body.