Overview

This document provides detailed technical specifications, operating characteristics, and installation guidelines for the VT67EDC and T67EDCS series high-performance vane pumps. These pumps are designed for hydraulic applications requiring precise volumetric displacement and high reliability.

1. Product Identification and Configuration

• Model Codes: VT67EDC or T67EDCS with various suffixes indicating displacement, flange type, shaft type, seal class, and modifications.
• Volumetric Displacement: Multiple options ranging from 10.8 cm³/rev (0.66 in³/rev) to 269.8 cm³/rev (16.40 in³/rev) depending on cam ring and pump section (P1, P2, P3).
• Mounting Flanges: ISO 4-bolt 3019-2 and SAE 4-bolt J518 flanges are available, with specific codes for each.
• Shaft Types: Keyed (SAE D&E), splined, and keyed G45N-ISO 3019-2 options are provided.
• Seal Classes and Fluid Compatibility: Options for mineral oil (S1), mineral oil and fire-resistant fluids (S5), and fire-resistant fluids only (S4).

2. Volumetric Displacement and Cam Ring Options

The pumps offer a wide range of volumetric displacements tailored by cam ring selection for each port (P1, P2, P3). Displacement values are provided in both cm³/rev and in³/rev, allowing for precise flow rate control.

3. Operating Parameters and Limitations

• Pressure Ratings: Maximum operating pressures vary by model and cam ring, with typical maximum internal pressures ranging from 90 bar (1300 psi) to 275 bar (4000 psi). Specific notes caution against using certain small displacement models at very high pressures due to excessive internal leakage.
• Speed Limits: Maximum rotational speeds range from 1800 to 2500 rpm depending on displacement and model.
• Axial and Radial Loads: Maximum permissible axial load is 2000 N (449 lbs). Radial load limits are provided with corresponding shaft codes.
• Viscosity and Temperature: Typical operating viscosity is 24 cSt; inlet pressure minimum is 0.9 bar absolute.

4. Performance Characteristics

• Flow and Power: Flow rates and input power are specified at 1800 rpm and 140 bar (2000 psi), with detailed tables showing volumetric displacement, flow in liters per minute (lpm) and gallons per minute (gpm), and power consumption in kW and hp.
• Internal Leakage: Internal leakage values are given as typical flow losses in lpm and gpm at various pressures and speeds. A critical recommendation is to avoid operating pumps for more than 5 seconds if internal leakage exceeds 50% of theoretical flow.
• Hydromechanical Power Loss: Power loss data is provided for each pump section under different operating conditions.
• Noise Levels: Noise emission levels are specified in dB(A) for triple pump configurations at various pressures and speeds, with typical values ranging from 65 to 85 dB(A).

5. Installation and Mounting

• Shaft and Mounting Details: Detailed shaft codes and dimensions are provided, including keyed and splined shaft options with precise measurements in inches and millimeters.
• Mounting Torque: Recommended mounting torque values are specified for different shaft types, ranging from 47 ft-lbs (64 Nm) to 222 ft-lbs (301 Nm).
• Flange and Bolt Patterns: Alternate mounting flange options with bolt hole sizes and pitch diameters are detailed for compatibility with various hydraulic systems.

6. Recommendations and Warnings

• Do not operate the pump at speeds or viscosities that cause internal leakage to exceed 50% of theoretical flow for more than 5 seconds.
• Certain small displacement models (e.g., 003) are not recommended for use at very high pressures (275 bar) and speeds (1500 rpm) due to excessive leakage.
• Ensure correct selection of seal class based on fluid type to maintain pump integrity and performance.

7. Summary Tables and Data Highlights

• Volumetric displacement options span from 10.8 cm³/rev to 269.8 cm³/rev, enabling flow customization.
• Maximum operating pressures up to 275 bar (4000 psi) with speed limits up to 2500 rpm.
• Power consumption and flow rates are provided for standard operating conditions (1800 rpm, 140 bar).
• Noise levels and hydromechanical losses are quantified to assist in system design and compliance.

Conclusion

The VT67EDC and T67EDCS vane pumps offer versatile configurations for hydraulic systems requiring precise flow control, high pressure capability, and reliable operation. Proper selection of displacement, shaft type, mounting flange, and seal class is critical. Adherence to operating limits and installation guidelines ensures optimal performance and longevity.