Overview

The White Drive Products D9 Series hydraulic motors are the largest heavy-duty motors in their product line, engineered for demanding industrial sectors such as construction, agriculture, mining, and forestry. They feature industry-standard mounting flanges for global compatibility and advanced design elements to enhance performance and durability.

Key Features and Benefits

• Industry Standard Mounting Flanges: Compatible with a wide range of equipment worldwide.
• Dual Tapered Roller Bearings: Increase load capacity and extend motor life.
• Nine Displacement Options: Provide design flexibility to suit various applications.
• Roller Stator® Design: Employs an 8-lobe rotor and 9-pocket stator for efficient power delivery.
• Case-Drain Design: Reduces pressure on shaft seals and maintains internal lubrication, enhancing longevity.

Typical Applications

Suitable for heavy-duty use in construction, agriculture, mining, forestry equipment, and related attachments.

Specifications

Note: Performance data is typical; actual units may vary. Intermittent operation should not exceed 10% of each minute.

Performance and Displacement Data

• Displacement Options: Nine options from ~256 cm³/rev (15.6 in³/rev) to 911 cm³/rev (55.6 in³/rev) and beyond.
• Torque and Speed: Up to ~2290 Nm (20265 lb-in) torque at speeds up to 1027 rpm.
• Flow Rates: Max flow ranges from ~197 lpm (17 gpm) to 256 lpm (62.7 gpm) depending on displacement.
• Efficiency: Operating efficiency typically between 70% and 100%, with lower efficiency zones at specific flow/speed conditions.
• Intermittent Ratings: Allow short bursts of higher performance limited to 10% duty cycle.

Design and Construction Details

• Rotor Width: Varies by displacement, approximately 22 mm (0.87 in) to over 54 mm (2.13 in).
• Operating Conditions: Performance tested at 54°C (129°F) with oil viscosity of 46 cSt (213 SUS).
• Pressure Ratings: Continuous max pressure from 207 bar (3000 psi) to 259 bar (3750 psi), intermittent peaks up to 241 bar (3500 psi).

Critical Parameters and Limitations

• Adhere to maximum continuous operating pressures and speeds to ensure motor longevity.
• Limit intermittent operation to 10% of total operating time to prevent overheating and premature wear.
• Maintain specified oil viscosity and temperature for optimal performance and efficiency.

Best Practices and Recommendations

• Implement case-drain systems to reduce shaft seal pressure and maintain internal lubrication.
• Carefully match motor displacement and flow rates to application requirements to optimize efficiency and lifespan.
• Monitor operating temperatures and pressures to remain within specified limits.
• Perform regular maintenance on bearings and seals to maximize benefits of dual tapered roller bearings.

Additional Technical Details

• Mounting Options: SAE C Mount (5" and 125 mm pilot), Wheel Mount (160 mm pilot), and Split Flange.
• Porting: Side ported with offset manifold options; ports include G 3/4, G 1, and UNF threads for main and drain.
• Shaft Options: Multiple shaft types including splines (14, 16, 17 tooth), straight shafts (various diameters), tapered shafts, and extended shafts; max torque ratings up to 3950 Nm (35000 lb-in).
• Weight and Dimensions: Motor weights range from ~32 kg (70.5 lb) to 46 kg (100 lb); detailed length dimensions provided for installation.
• Bearing Load Capacity: Based on ISO 281 for L10 life of 2000 hours at 100 rpm, with load multiplication factors for different speeds.

Ordering Information

• Series: 800 and 801, both bi-directional with reversible shaft rotation by swapping inlet hoses.
• Displacement: Nine options from 256 cm³/rev to 1027 cm³/rev.
• Mount Type and Port Size: Choice between SAE C mounts and wheel mounts with various port sizes.
• Paint Options: Standard black, black with unpainted mounting surface, or no paint.
• Valve Cavity and Cartridge Options: 10 Series/2-Way Valve cavity with cartridge installation available.
• Shaft Configurations: Multiple selectable options based on application needs.
• Miscellaneous: Additional features and accessories available.

Application and Usage Notes

• Performance data is typical; actual performance may vary slightly.
• Intermittent pressure ratings limited to 10% duty cycle to prevent damage.
• Oil viscosity and temperature critically affect motor performance.
• Bearings and shafts must be selected considering load capacities and operating speeds.

Contact Information

• White Drive Products, Inc. (USA): Hopkinsville, KY, Phone +1.270.885.1110
• White Drive Products GmbH (Europe): Opfenbach, Germany, Phone +49.8385.924988.0
• White (China) Drive Products Co., Ltd. (Asia): Zhenjiang, China, Phone +86 511 5729988
• Website: www.whitedriveproducts.com

Critical Parameters and Recommendations Summary

• Maintain oil viscosity at 46 cSt at 54°C for optimal performance.
• Do not exceed maximum continuous pressure ratings to avoid premature wear.
• Use intermittent pressure ratings only for short durations (10% duty cycle).
• Select shaft and mounting options compatible with torque and load requirements.
• Refer to bearing load curves and multiplication factors when calculating shaft loads at varying speeds.
• Ensure proper porting and valve cavity options for system compatibility.

Summary

The White Drive Products D9 Series hydraulic motors are robust, high-torque units designed for heavy-duty industrial applications. Their advanced bearing design, case-drain lubrication system, and multiple displacement options provide reliable power delivery and extended service life when operated within specified parameters. Proper selection, installation, and maintenance are essential to maximize performance and durability.