Manufacturer of Linear Motion SystemsManufacturer of Linear Motion Systems
4215 Pleasant Rd
Fort Mill, SC 29708

Customer Service

800-284-9784

Manufacturer of Linear Motion SystemsManufacturer of Linear Motion Systems

Slew Drive Bearing Assemblies


Slewing drive bearings are usually found in application such as:   wind turbines, heavy load transporters, solar trackers, harbor cranes, hydraulic equipment, crane steering mechanisms, automation systems, heavy load manipulators, yaw and pitch control tables.

Bolt, Connect, Run ... Done!

Ball Bearing based design to handle simultaneously occurring radial, axial, and moment loads.   Hydraulic Motor Ready (Can also be equipped with electric motor/gearbox)

Slew Drive with Hydraulic Motor

WD-LA Series Slew Drives

    • Worm Gear Drive System
    • Painted Cast Iron Housing
    • Designed for Outer Ring Rotation
    • Totally Enclosed Ball Bearing Support
    • Ready for Hydraulic Motor Mounting

Typical Lead-time is 1-2 weeks

Motor Drive Side View

Slew Drive Motor Side

Non Drive Side View

Slew Drive Non Motor Side
Slew Bearing Loading Diagram

Lubricant Requirements

Applying a small amount of an NLGI #2 lithium-based grease with no solid additives such as MoS2 (molybdenum disulfide) is recommended for quiet operation and long life.

These drives perform best when mounted in horizontal plane.

Slew Bearing Loading Diagram
Person Holding Slew Drive

Below is a list of available Slew Drive Assemblies with short lead-times.

   PART NUMBER    Bore Size

(inch)
OD

(inch)
Height

(inch)
Maximum
Torque

(ft-lbs)
Axial Static
Load Rating

(lbs)
Radial Static
Load Rating

(lbs))
Net
Wt.

(lbs)
Tech
Sheet

PDF
2D
Drawing

PDF
* WD-L-0156/3-078713.46510.8663.228241956,87721,13290
WD-LA-0223/3-063705.70913.8193.2286861122,00045,000105
WD-LA-0343/3-0637110.43318.5433.2289518203,00075,000160
WD-LA-0419/3-0637212.75622.0873.22811,510248,00092,000197
* WD-L-0478/3-0490414.96124.2134.13417,913406,455151,746250
    * These products have a cylindrical shaft with keyway input.  All others require a spline shaft input.

We offer these without hydraulic or electric motors since most customers prefer to use the same motor brand throughout their machine.   For OEMs with high volume applications we can offer the complete system with hydraulic motor.

Slew Bearing Loading Diagram

Contact area between worm and ring gear have been optimized for best performance.

Slew Bearing Loading Diagram