Eaton Hydraulic Motor

Eaton Hydraulic Motor

This is an Eaton 46 Series (HHD) heavy-duty fixed displacement hydraulic motor, specifically model 4633 with a 4.6 cubic inch (75.3 cm³) displacement. It is engineered to provide consistent rotational power to the drum of concrete mixer trucks, ensuring the drum maintains a constant speed whether on the highway or idling at a job site. This motor is a critical component for the hydraulic drum drive system and is a direct replacement for worn or failed units on various mixer models. Its robust cast-iron construction and fixed-clearance slipper design ensure durability and reliable performance under high-pressure conditions.

Key Features

• Fixed displacement, heavy-duty piston motor design.
• Displacement of 4.6 in³/rev (75.3 cm³/rev).
• 21-tooth (16/32 pitch) splined output shaft.
• Nominal operating pressure of 420 bar (6000 psi).
• Peak operating pressure of 480 bar (7000 psi).
• Designed for drum drive systems on concrete transit mixers.
• Code 61 side port configuration.

Fits These Mixers

McNeilus, Terex, Con-Tech. This motor is a general hydraulic component for concrete mixer drum drives. It is specified as a 4.6 cu in motor for Terex Advance front discharge mixers and is part of the 4633 family used by manufacturers like Con-Tech. Compatibility should be verified using the Eaton part number.

All measurements ± standard manufacturing tolerance.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.