Slewing Drive Technical Overview

This document provides detailed technical specifications, performance parameters, and load capacity charts for various models of slewing drives, including WDP21, SDE7A.5/PDE7A.5, and SDE17C series. The information is presented with dimensional drawings, load charts, and key mechanical parameters essential for proper selection and application.

1. Units and General Notes

• All dimensions are in millimeters (mm), with 1 inch = 25.4 mm.
• Weights of the drives vary by model, e.g., WDP21 weighs 545 kg, SDE7A.5/PDE7A.5 ranges from 23 to 33 kg, and SDE17C weighs 390 kg.
• Drawings include multiple views: side, front, top, and sectional views (A, B, C) for comprehensive visualization.
• Designs are subject to change without prior notice; special/custom designs are available upon customer request.

2. Load Capacity and Moment Load Charts

Each model includes detailed moment load charts illustrating the relationship between tilting moment torque, axial load, and radial load. Users must ensure actual loads remain within the specified curves to avoid overloading.

• Tilting Moment Torque: Expressed in kN·m and lbf·ft, indicating the maximum moment the drive can withstand without tipping.
• Axial Load: Static axial load ratings are provided in kN and lbf, representing the maximum load along the axis.
• Radial Load: Static radial load ratings in kN and lbf indicate the maximum load perpendicular to the axis.

3. Performance Parameters by Model

WDP21

• Output Torque: 40 kN·m (29,520 lbf·ft)
• Tilting Moment Torque: 200 kN·m (148,000 lbf·ft)
• Static Axial Load: 385 kN (87,000 lbf)
• Static Radial Load: 335 kN (75,000 lbf)
• Gear Ratio: 105:1
• Tracking Precision: ≤ 0.2°
• Weight: 545 kg

SDE7A.5 / PDE7A.5

• Output Torque ranges from 1,500 to 2,000 N·m (1,107 to 1,476 lbf·ft)
• Tilting Moment Torque up to 13,500 N·m (9,957 lbf·ft)
• Static Axial Load: up to 133 kN (29,900 lbf)
• Static Radial Load: up to 120 kN (26,976 lbf)
• Gear Ratios: 73:1 (SDE7A.5), 28:1 (PDE7A.5)
• Tracking Precision: ≤ 0.2° (Azimuth), ≤ 0.1° (Elevation)
• Weight: 25 to 33 kg

SDE17C

• Output Torque: 20 kN·m (14,760 lbf·ft)
• Tilting Moment Torque: 135.6 kN·m (100,000 lbf·ft)
• Static Axial Load: 970 kN (218,000 lbf)
• Static Radial Load: 390 kN (88,000 lbf)
• Gear Ratio: 102:1
• Tracking Precision: ≤ 0.2°
• Weight: 390 kg

4. Mechanical and Dimensional Details

Detailed dimensional drawings include bolt patterns, hole sizes, tap depths, and spacing for mounting and input shafts. Key dimensions such as diameters, bolt circle diameters, and tap specifications (e.g., M20, M12, M16) are provided for precise installation.

• Grease nipples are located on both sides, equally spaced, for lubrication maintenance.
• Input shaft dimensions and mounting hole patterns are specified for compatibility with customer equipment.

5. Recommendations and Notices

• Ensure actual load conditions remain within the provided moment load curves to prevent mechanical failure.
• Special designs can be customized based on customer requirements.
• All drawings are for reference only and may be updated without notice to improve product performance.
• Precision tracking values indicate the angular accuracy of the slewing drive in azimuth and elevation directions.

Summary

This document serves as a comprehensive technical reference for selecting and applying slewing drives in mechanical systems requiring rotational motion with load-bearing capacity. It emphasizes load limits, mechanical dimensions, and performance parameters critical for safe and efficient operation.