VCM-SF-15C-10 CML Variable Vane Pump 55 Bar

Product Overview

The CML VCM-SF-15C-10 is a variable displacement vane pump from Camel Precision Co., Ltd. (CML / Camel Hydraulic), designed for low-pressure industrial hydraulic systems.

CML officially classifies the VCM-SF family as a Low Pressure Variable Vane Pump. The current CML product page specifies a family-wide adjustable pressure range of 5–70 bar and an adjustable flow range of 8–40 L/min. The official model-code table identifies the C pressure range as 30–55 bar and states that pump displacement/flow data are tested at 1,800 rpm.

This is an important correction to the original title: VCM-SF should not be marketed as a high-pressure pump. CML maintains separate medium- and high-pressure vane-pump families.

The exact VCM-SF-15C-10 model appears in historical and industry model listings, where the 15 size is associated with approximately 15 L/min at 1,800 rpm. However, the current CML online model list focuses on 12, 20, 30 and 40 series, so the 15 L/min figure should be treated as historical/model-family data and verified against the nameplate or original CML order documentation before being used as a contractual specification.

Our replacement engineering process focuses on in-place interchangeability, followed by 100% simulated working-condition testing of flow, pressure compensation, leakage, temperature rise and noise.

Technical Specifications

CML VCM-SF-15C-10

• Manufacturer: Camel Precision Co., Ltd. (CML)
• Brand: CML / Camel Hydraulic
• Series: VCM-SF
• Full Model: VCM-SF-15C-10
• Pump Type: Variable displacement vane pump
• Series Classification: Low-pressure variable displacement vane pump
• Control Principle: Pressure-compensated variable displacement
• Pressure Code: C
• Pressure Adjustment Range: 30–55 bar
• Reference/Test Speed: 1,800 rpm
• Historical Model Flow Class: Approximately 15 L/min at 1,800 rpm
• Family-Wide Flow Adjustment Range: 8–40 L/min across the currently published SF family, not an individual guaranteed value for this exact legacy model.
• Maximum Pressure: The current CML page gives 70 bar as the upper pressure range of the SF family, but this should not be presented as the continuous rated pressure of the exact VCM-SF-15C-10 configuration.
• Independent Rated Pressure: Not separately published for the exact 15C-10 configuration in the current official CML online data.
• Independent Maximum Speed: Not separately published for the exact 15C-10 configuration; 1,800 rpm is the documented test basis.
• Weight: Not published for the exact model on the current CML official product page.
• Structure: Variable vane pump
• Primary Function: Automatic pressure-compensated displacement adjustment
• Key Series Characteristics: High efficiency, low vibration, low noise, fast/stable pressure compensation and compact structure.

Engineering Data Qualification

For procurement, the safest specification hierarchy is:

Nameplate / original CML order code → model-specific drawing → current CML family data → historical industry model data

This prevents a legacy VCM-SF-15C-10 configuration from being incorrectly assigned specifications belonging to a newer 12/20/30/40 model.

Model Code Engineering Interpretation

VCM

CML Variable Vane Pump family.

SF

Low Pressure Variable Displacement Vane Pump. CML officially uses this classification on its current product page.

15

Historically associated with the 15 L/min class at approximately 1,800 rpm in industry listings for the older VCM-SF product family.

Because this 15-size configuration is not currently shown in CML’s live model-number list, the exact flow value should be nameplate-verified before contractual use.

C

30–55 bar pressure range.

CML’s current SF coding distinguishes:

• A = 10–20 bar
• B = 15–35 bar
• C = 30–55 bar
• D = 50–70 bar.

10

The final model-code position belongs to the shaft/body configuration in CML’s SF coding structure. Exact dimensional interpretation should follow the applicable model drawing rather than being inferred solely from the suffix.

Key Technical Advantages

1. Pressure-Compensated Variable Displacement

The VCM-SF structure automatically changes effective vane-pump displacement as system pressure changes. This allows the pump to reduce unnecessary output when the system reaches the required pressure level.

2. Low Vibration and Low Noise

CML specifically identifies extremely low vibration and noise as SF-family features. This is useful in machining environments where pump noise can affect both machine acoustics and operator comfort.

3. Fast Pressure Compensation

CML highlights fast and stable pressure-compensation response. This allows the pump to react quickly as the hydraulic circuit moves between higher-flow and pressure-holding conditions.

4. Compact Construction

The SF family is described by CML as compact, easy to adjust and space-efficient. This is useful in compact power units and machine-tool hydraulic systems where installation envelope matters.

5. Efficient Operation

CML describes the SF family as offering high efficiency with minimum power loss. This is a family-level performance characteristic; no unsupported numerical efficiency percentage is assigned to the exact VCM-SF-15C-10.

6. Robust Mechanical Architecture

CML identifies the SF design as sturdy and intended for long service life. From an engineering perspective, durability depends on vane-to-ring contact, rotor condition, bearing condition, shaft alignment, sealing and internal clearances.

7. Suitable for Machine-Tool and Dedicated Machinery Applications

CML officially lists CNC lathes, CNC milling machines, CNC grinders, hydraulic fixtures and other dedicated machinery among SF-series applications.

8. Replacement Engineering Based on Complete Model Code

A proper replacement requires verification of:

• Shaft configuration
• Mounting interface
• Rotation
• Suction and pressure ports
• Pressure-adjustment range
• Variable mechanism
• Motor coupling
• Installation envelope

External shape alone is not sufficient for hydraulic interchangeability.

Application Areas

CNC Machine Tools

CML officially identifies the SF family for:

• CNC lathes
• CNC milling machines
• CNC grinders
• Hydraulic fixtures.

Dedicated Industrial Machinery

Typical uses include:

• Circular saw machines
• Grinding machinery
• Special-purpose machinery
• Inner/outer diameter grinding systems
• Other low-pressure industrial hydraulic circuits.

Shoemaking Machinery

CML specifically highlights shoemaking machinery, where high operating frequency and long production cycles require stable and efficient hydraulic output.

Injection Molding Equipment

CML currently supports injection-molding-machine energy-saving solutions, but this does not mean that the VCM-SF-15C-10 is a high-pressure main injection-molding pump. CML’s broader injection-molding solutions include other pump architectures. Therefore the VCM-SF-15C-10 should only be selected for an injection-molding application when the actual circuit pressure and flow requirements fall within the SF low-pressure range.

Expert Maintenance Tips

1. Do Not Treat the C Code as a High-Pressure Setting

The C code represents a 30–55 bar pressure range. It should not be adjusted beyond the intended SF-family configuration to compensate for an undersized pump.

2. Treat 1,800 rpm as the Test Basis

CML explicitly states that the pump displacement/flow data are tested at 1,800 rpm. This should be described as a reference/test condition rather than automatically as the maximum permissible speed.

3. Prime and Bleed the Pump Before Commissioning

Air in the suction circuit or pump housing can cause:

• Abnormal noise
• Pressure fluctuation
• Unstable flow
• Increased heat generation

The suction side should therefore be filled and checked for air ingress before normal operation.

4. Protect the Suction Circuit

Check:

• Reservoir level
• Suction-line diameter
• Filter pressure drop
• Hose collapse
• Fittings
• Air ingress
• Actual pump speed

A vane pump operating under poor inlet conditions can exhibit noise and unstable output before other symptoms become obvious.

5. Calibrate the Pressure Compensator Under Representative Conditions

Pressure-compensation adjustment should be checked under realistic hydraulic flow and load rather than adjusted arbitrarily under no-flow conditions.

A useful commissioning relationship is:

Pressure → Flow → Speed → Power Consumption

This helps identify whether the pump is correctly compensating instead of merely reaching a target static pressure.

6. Maintain Hydraulic Cleanliness

The vane, rotor, ring and distribution surfaces are precision hydraulic interfaces. Contamination can cause:

• Increased internal leakage
• Reduced pressure-holding ability
• Lower flow
• Higher temperature
• Increased operating noise

7. Verify Motor/Pump Shaft Alignment

During replacement, check:

• Shaft concentricity
• Coupling condition
• Axial clearance
• Mounting stress
• Fastener alignment

The pump shaft should not be exposed to unnecessary misalignment or external loads.

8. Perform 100% Simulated Working-Condition Testing

Recommended tests for a VCM-SF-15C-10 replacement include:

• 1,800 rpm reference-speed test
• 30–55 bar pressure-range verification
• Flow test
• Pressure-compensation response
• Internal leakage
• Noise
• Temperature rise
• Rotation direction
• Continuous operating stability

This gives the term “100% simulated working-condition testing” a measurable engineering basis rather than treating it as a marketing slogan.