10SCY14-1B Jingong Variable Piston Pump 31.5 MPa

Product Overview

The CY14-1B Series from Qidong High Pressure Oil Pump / Jingong is a family of swashplate axial piston pumps using a rotating cylinder block and hydrostatic oil-film balancing at the slipper/swashplate and valve-plate/cylinder-block interfaces.

The manufacturer’s official product pages identify three relevant configurations:

• MCY14-1B — Fixed Displacement
• SCY14-1B — Manual Variable Displacement
• YCY14-1B — Pressure-Variable / Pressure-Compensated Variable

The manufacturer describes the series as compact, efficient, lightweight, low-noise, long-life and capable of strong self-priming performance. The construction uses seven pistons arranged around the drive axis.

The requested models are:

• 10SCY14-1B
• 25SCY14-1B
• 40SCY14-1B
• 10YCY14-1B
• 25YCY14-1B
• 2.5MCY14-1B
• 5MCY14-1B
• 10MCY14-1B

For replacement applications, the engineering target should be more than dimensional matching. Shaft, flange, ports, rotation, displacement, control type and hydraulic response should all be matched, followed by 100% simulated working-condition testing.

Technical Specifications

Family-Level Data

• Brand: Jingong / Qidong High Pressure Oil Pump
• Manufacturer: Qidong High Pressure Oil Pump Co., Ltd.
• Series: CY14-1B
• Pump Type: Swashplate axial piston pump
• Cylinder Block: Rotating
• Piston Count: 7
• Control Variants: Fixed displacement, manual variable displacement, pressure-variable/pressure-compensated variable
• Typical Series Pressure Level: 31.5 MPa for the common industrial configurations.

2.5MCY14-1B

• Displacement: 2.5 mL/rev
• Published Rated Pressure: 32 MPa in a technical parameter table
• Rated Speed: 3000 rpm
• Published Drive Power: approximately 6 kW
• Published Volumetric Efficiency: ≥92%
• Published Reference Mass: approximately 4.5 kg
• Control: Fixed displacement
• Final procurement data should be confirmed from the model nameplate/manual because the current manufacturer web page does not expose these numeric fields directly.

5MCY14-1B

• Displacement: 5 mL/rev
• Continuous Working Pressure: 31.5 MPa in published series data
• Rated Speed: 1500 rpm
• Control: Fixed displacement
• Theoretical Flow: 5 L/min at 1000 rpm; 7.5 L/min at 1500 rpm
• A single official online peak-pressure figure for this exact SKU was not found and is therefore not assigned.

10MCY14-1B

• Displacement: 10 mL/rev
• Continuous Working Pressure: 31.5 MPa
• Rated Speed: 1500 rpm
• Control: Fixed displacement
• Theoretical Flow: 10 L/min at 1000 rpm; 15 L/min at 1500 rpm
• Published Typical Input Power: approximately 8.7 kW in a CY14-1B technical table.

10SCY14-1B

• Displacement: 10 mL/rev
• Continuous Working Pressure: 31.5 MPa in published series data
• Rated Speed: 1500 rpm
• Control: Manual variable displacement
• Theoretical Flow: 10 L/min at 1000 rpm; 15 L/min at 1500 rpm
• The manufacturer describes the SCY adjustment as handwheel-operated, with clockwise rotation reducing flow and counterclockwise rotation increasing flow.

25SCY14-1B

• Displacement: 25 mL/rev
• Continuous Working Pressure: 31.5 MPa
• Rated Speed: 1500 rpm
• Control: Manual variable displacement
• Theoretical Flow: 25 L/min at 1000 rpm; 37.5 L/min at 1500 rpm
• Published secondary data list approximately 14.1 kW for this size, but power definitions differ between sources and should be checked against the exact configuration document.

40SCY14-1B

• Displacement: 40 mL/rev
• Continuous Working Pressure: 31.5 MPa
• Rated Speed: 1500 rpm
• Control: Manual variable displacement
• Theoretical Flow: 40 L/min at 1000 rpm; 60 L/min at 1500 rpm
• A configuration-specific maximum continuous speed was not independently verified in the manufacturer’s current online text.

10YCY14-1B

• Displacement: 10 mL/rev
• Nominal/Rated Pressure: 31.5 MPa
• Rated Speed: 1500 rpm
• Control: Pressure-variable / pressure-compensated variable
• Theoretical Flow: 10 L/min at 1000 rpm; 15 L/min at 1500 rpm
• Maximum Theoretical Torque: approximately 54.6 Nm
• Public secondary sources list different short-term maximum-pressure values, so no single peak rating is assigned here without the exact model document.

25YCY14-1B

• Displacement: 25 mL/rev
• Nominal/Rated Pressure: 31.5 MPa
• Rated Speed: 1500 rpm
• Control: Pressure-variable / pressure-compensated variable
• Theoretical Flow: 25 L/min at 1000 rpm; 37.5 L/min at 1500 rpm
• Maximum Theoretical Torque: approximately 134.9 Nm.

Key Technical Advantages

1. Hydrostatic Oil-Film Balancing

The official manufacturer description identifies hydrostatic oil-film balancing between the slipper and swashplate and between the valve plate and rotating cylinder block.

This design keeps the critical sliding interfaces in a liquid-friction regime and reduces reliance on heavy thrust-bearing arrangements.

2. Seven-Piston Rotating Cylinder Block

The rotating cylinder block contains seven pistons distributed around the drive axis.

The drive shaft rotates the cylinder block, causing reciprocating piston movement and completing the suction and discharge cycles through the valve plate.

3. Three Distinct Control Concepts

The CY14-1B architecture offers:

• MCY: fixed displacement;
• SCY: handwheel/manual displacement adjustment;
• YCY: pressure-variable displacement control.

This lets the same family address different hydraulic control requirements without treating all units as one identical pump configuration.

4. Compact Mechanical Architecture

The manufacturer identifies the series with compact construction, high efficiency, low noise, low weight and long service life.

5. Pressure-Dependent Flow Regulation in YCY Versions

The official YCY description explains that system pressure acts on the servo mechanism to change swashplate angle and therefore pump flow. This produces an approximately constant-power flow/pressure relationship within the designed regulation range.

6. Manual Variable Control for SCY

The SCY version provides a simple manual flow-adjustment mechanism.

The manufacturer specifically positions this arrangement for applications where flow changes are not frequent and remote displacement control is unnecessary.

7. Engineering-Controlled Replacement Manufacturing

For aftermarket replacement, critical inspection points include:

• Cylinder-block bore geometry;
• Piston-to-cylinder fit;
• Piston-slipper contact;
• Swashplate working surface;
• Valve-plate flatness;
• Return plate and spring;
• Shaft and spline condition;
• Bearing fit;
• Internal leakage.

The public manufacturer documents reviewed do not disclose complete material grades for every internal component, so unsupported alloy or coating claims are intentionally excluded.

Application Areas

The manufacturer identifies the CY14-1B family for:

• Forging machinery
• Machine tools
• Shipbuilding
• Aviation-related hydraulic equipment
• Metallurgical machinery
• Plastic machinery
• Construction machinery
• Mining equipment.

The manufacturer’s English site also highlights construction machinery, oilfield equipment, shipbuilding and forging machines as application fields.

MCY Applications

Typical use cases include:

• Constant-flow hydraulic power units
• Auxiliary circuits
• Simple hydraulic presses
• Lifting equipment
• Hydraulic circuits without variable-flow requirements

SCY Applications

Typical use cases include:

• Manually adjustable hydraulic systems
• Machine tools
• Small presses
• Commissioning/test equipment
• Circuits that do not require frequent displacement adjustment

YCY Applications

Typical use cases include:

• Hydraulic presses
• Forging machinery
• High-load industrial hydraulic systems
• Systems requiring high-flow operation at low pressure and reduced flow at high pressure
• Constant-power-oriented hydraulic circuits

Expert Maintenance Tips

1. Unload the System Before Large SCY Adjustments

The manufacturer explicitly states that changing SCY flow during operation should be performed after unloading the system and that this control method is intended for infrequent adjustment.

2. Test YCY as a Pressure-to-Flow System

Do not validate YCY only by measuring maximum flow.

Record:

• Outlet pressure;
• Flow;
• Shaft speed;
• Regulation start behavior;
• High-pressure flow;
• Low-pressure flow;
• Temperature rise.

The defining characteristic is how displacement responds to changing pressure.

3. Diagnose MCY as a Fixed-Displacement Pump

For MCY, low flow should trigger inspection of:

• Suction restriction;
• Air ingress;
• Cylinder-block/piston wear;
• Valve-plate condition;
• Piston-slipper condition;
• Shaft speed;
• Internal leakage.

There is no displacement-control mechanism to adjust on a fixed MCY unit.

4. Keep Hydraulic Oil Clean

A piston pump’s rotating group and valve-plate interfaces are sensitive to contamination.

Recommended maintenance includes:

• Reservoir cleaning;
• Suction-filter inspection;
• Return-filter inspection;
• Contamination analysis after pump failure;
• Rechecking filtration after replacement.

5. Check Shaft Alignment

Inspect:

• Shaft-to-motor alignment;
• Coupling clearance;
• Spline/key condition;
• Flange seating;
• External radial loading.

Misalignment can transmit abnormal loads into the bearings and rotating group.

6. Keep the Case-Drain Path Open

The specific drain arrangement must follow the exact drawing, but CY14-1B documentation includes the case-related oil circuit.

Do not connect only the primary suction and discharge lines while ignoring the housing-drain requirements.

7. Keep Rated and Peak Pressure Separate

The most consistently published CY14-1B continuous/rated pressure is 31.5 MPa, while aftermarket references variously describe short-term maximum pressure as approximately 35 or 40 MPa.

For a formal product page or purchase contract, use:

• 31.5 MPa as the common rated/continuous series pressure;
• Peak pressure as subject to the exact model documentation/nameplate unless the applicable manufacturer document is available.

8. Perform 100% Simulated Working-Condition Testing

For replacement CY14-1B units, final testing should include:

• Start-up;
• Rated-speed operation;
• Flow measurement;
• Pressure loading;
• Internal leakage;
• Housing leakage;
• Temperature rise;
• Noise;
• Vibration;
• SCY manual-adjustment response;
• YCY pressure-variable response;
• MCY fixed-displacement stability.

The final quality target should be:

Interchangeability + Correct Control Function + 100% Simulated Working-Condition Testing

Engineering Verification Statement

For SEO purposes, the strongest primary SKU is:

10SCY14-1B — Jingong CY14-1B Manual Variable Piston Pump

Related exact model keywords:

• 25SCY14-1B
• 40SCY14-1B
• 10YCY14-1B
• 25YCY14-1B
• 2.5MCY14-1B
• 5MCY14-1B
• 10MCY14-1B

The official manufacturer website confirms the CY14-1B family architecture and the MCY/SCY/YCY control distinctions. It also provides a dedicated product-information download section containing the company’s axial piston pump manual.

Because the current online manual file could not be fetched reliably, this page deliberately avoids assigning one universal “peak pressure,” one universal maximum speed, or unverified material grades to every requested SKU. That is the safer approach for a technical B2B SEO page where a wrong parameter can create an engineering or procurement problem.