Overview

This document provides detailed technical specifications, operating characteristics, and installation guidelines for the VT67EC series high-performance vane pumps. It includes data on volumetric displacement, noise levels, internal leakage, hydromechanical power loss, permissible loads, mounting options, and shaft types.

1. Volumetric Displacement

The pumps have various volumetric displacements ranging from 10.8 cm³/rev (0.66 in³/rev) to 268.7 cm³/rev (16.40 in³/rev). Specific models include designations such as 005, 006, 008, 010, 012, 014, 015, 020, 022, 025, 028, 031, 042, 045, 050, 052, 054, 057, 062, 066, 072, 085, and their corresponding displacement values.

2. Noise Level

Noise levels are measured in dB(A) at 1 meter distance according to ISO 4412 standards. Noise data is provided for different speeds (1200, 1800, 2200 rpm) and viscosities (notably 24 cSt). The noise level for double pumps is given with each section discharging at specified pressures. The noise level formula is Lw = Lp + 8 dB(A).

3. Internal Leakage

Internal leakage values are typical and expressed in liters per minute (lpm) or gallons per minute (gpm). The document warns against operating the pump for more than 5 seconds at any speed or viscosity if internal leakage exceeds 50% of the theoretical flow. Total leakage is the sum of losses from each section under operating conditions.

4. Hydromechanical Power Loss

Power loss data is provided in kilowatts (kW) for individual cartridges at various operating pressures and speeds. Total hydromechanical power loss is the sum of losses from each section. The document includes curves and tables showing power loss versus pressure and speed.

5. Permissible Loads

The maximum permissible axial load (Fa) on the pump shaft is 2000 N (449 lbs). Radial load limits are also indicated for different pump sizes and configurations.

6. Mounting and Shaft Types

Mounting options include SAE C 2-bolt flanges (J744c) and 4-bolt SAE flanges (J518). Seal classes are specified for mineral oil and fire-resistant fluids (S1, S4, S5). The direction of rotation can be clockwise (R) or counter-clockwise (L).

Shaft types include:

• Keyed SAE CC (Code 1)
• Keyed non-SAE (Code 2)
• SAE C splined shaft (Code 3)
• SAE CC splined shaft (Code 4)

Mounting torque values are provided for different shaft types, e.g., 59 ft.lbs (80 Nm) for keyed shafts and 138 ft.lbs for splined shafts.

7. Operating Conditions and Limitations

• Maximum internal pressure varies by model, e.g., 90 bar (1300 psi) max internal for model 085, 240 bar max for others.
• Maximum rotational speeds vary: 2000 RPM max for model 085, 2500 RPM max for models 025, 028, 031.
• Viscosity recommendations include 24 cSt typical, with warnings against operation at viscosities or speeds causing excessive leakage.
• Input power and flow rates are tabulated for pressures of 140 bar (2000 psi), 240 bar (3500 psi), and 275 bar (4000 psi) at 1800 rpm.

8. Additional Notes and Recommendations

• Do not operate the pump for more than 5 seconds if internal leakage exceeds 50% of theoretical flow.
• Total leakage and power loss should be calculated as the sum of individual section losses under actual operating conditions.
• Porting combinations and design letters are customizable per application requirements.

Summary Tables and Data

The document contains extensive tabulated data correlating volumetric displacement, flow rates, pressure ratings, power losses, noise levels, and mounting dimensions. Key parameters such as shaft torque limits, mounting torque, and thread specifications are also detailed.

Critical Parameters

• Max axial load: 2000 N (449 lbs)
• Max internal pressure varies by model (up to 275 bar)
• Max speed varies by model (up to 2500 RPM)
• Noise levels measured per ISO 4412
• Seal classes adapted for fluid types
• Mounting flanges: SAE C 2-bolt and 4-bolt options

Conclusion

This technical document serves as a comprehensive reference for selecting, installing, and operating VT67EC series vane pumps. It emphasizes adherence to pressure, speed, and leakage limits to ensure optimal performance and longevity. Proper mounting, shaft selection, and fluid compatibility are critical for reliable operation.