Overview

This document provides detailed technical specifications, operating characteristics, and installation guidelines for the VT67DCC high-performance vane pump series. It includes volumetric displacement data, mounting options, shaft types, seal classes, performance curves, and operational limits.

1. Volumetric Displacement Specifications

The pump series offers a range of volumetric displacements measured in cm³/rev and in³/rev. Key displacement values include:

• B17: 55.0 cm³/rev (3.36 in³/rev)
• B31: 99.1 cm³/rev (6.05 in³/rev)
• B24: 81.1 cm³/rev (4.95 in³/rev)
• B42: 137.5 cm³/rev (8.39 in³/rev)
• 050: 158.0 cm³/rev (9.64 in³/rev)

Additional displacements range from 003 (10.8 cm³/rev) to 031 (99.9 cm³/rev), allowing selection based on flow and pressure requirements.

2. Mounting and Shaft Options

The pump supports multiple mounting flanges and shaft types:

• Mounting flange: SAE J744c with 2 or 4 bolt options.
• Shaft types: Splined (SAE CC) and keyed shafts, with clockwise (R) or counter-clockwise (L) rotation.
• Seal classes: S1 for mineral oil, S4 for fire-resistant fluids, and S5 for mineral oil and fire-resistant fluids.
• Design letters: Standard (00) and modifications available.

3. Operating Characteristics

Operating data is provided for typical conditions at 24 cSt viscosity and 1800 rpm, including input power (kW), flow rates (lpm/gpm), and pressure ratings:

• Maximum recommended pressures vary by displacement size, e.g., 042-045-050 models max at 2200 rpm and 210 bar (3000 psi).
• Specific warnings include avoiding use of the 003 displacement at 275 bar (4000 psi) and 1500 rpm due to excessive internal leakage (>50% theoretical flow).
• Power loss and internal leakage curves are provided for various speeds (1200, 1800, 2400 rpm) and viscosities (10 cSt, 24 cSt).

4. Performance Limits and Recommendations

• Maximum axial load permissible: 800 N (180 lbs).
• Do not operate the pump for more than 5 seconds at any speed or viscosity if internal leakage exceeds 50% of theoretical flow.
• Total leakage is the sum of losses from each section under operating conditions.
• Noise levels are specified for triple pump configurations at various pressures.

5. Mechanical and Installation Details

Detailed mechanical dimensions and mounting torque specifications are included:

• Mounting torque values range from 59 ft-lbs (80 Nm) to 162 ft-lbs (220 Nm) depending on bolt size and flange type.
• Shaft dimensions and spline details conform to SAE standards (Class 1-J498b).
• Keyed shaft and splined shaft options with precise measurements for fit and pressure angle.

6. Porting and Connection Variables

Port sizes and combinations are specified for P1, P2, and P3 ports with metric and UNC thread options. Direction of rotation is defined by viewing the shaft end.

Critical Notes and Limitations

• Use caution with the smallest displacement (003) at high pressure and speed due to leakage concerns.
• Adhere strictly to maximum rpm and pressure limits for each displacement size to avoid damage.
• Ensure correct seal class selection based on fluid type to maintain pump integrity.

Summary

The VT67DCC vane pump series offers versatile volumetric displacements and mounting options suitable for high-performance hydraulic applications. Proper selection of displacement, shaft type, seal class, and operating parameters is essential to optimize performance and longevity. The document provides comprehensive data on flow, power, leakage, noise, and mechanical installation to guide engineers in pump specification and integration.