Impro White Motor 505540A5123AAAAA Impro

White Roller Stator Motor – 505540A5123AAAAA is a high-displacement RE 505 Series fixed-installation motor built for equipment that runs hard through sustained, high-torque work cycles without stopping. On a 6-hole mount, the 14-tooth splined shaft equips it for equipment where the driven component is already designed for spline engagement — gearboxes, auger drives, and conveyor head shafts where the connection needs to hold without a key through torque reversals and shock loads. Impro Fluidtek builds these motors on the original White Drive Products patents, acquired directly from Danfoss in 2022. With 536 cm³/rev displacement and 8,700 in-lbs continuous torque, it powers wood chippers and drum drives, heavy feed rollers and winch systems, and large industrial conveyor drives on forestry and processing equipment. This motor also replaces 500540A5123ZAAAA or 500540A3123AAAAA.

Specifications

• Series: RE 505
• Displacement: 536 cm³/rev [32.7 in³/rev]
• Flow: 20 GPM Continuous (24 GPM Inter)
• Max. Speed: 140 RPM (170 RPM Inter)
• Torque: 8,700 in-lbs Continuous (11,000 in-lbs Inter)
• Max. Pressure: 2,000 psi Continuous (2,500 psi Inter)
• Mount: 6-Hole
• Shaft: 1-¼" 14T Spline
• Ports: SAE
• Genuine White/Impro 505540A5123AAAAA

Common Applications

• Wood chippers and drum drives on forestry and processing equipment
• Heavy feed rollers and winch systems requiring sustained high-torque splined drive connections
• Large industrial conveyor drives on forestry and agricultural processing machinery