FLEXILOCK hydraulic pump drive kits

FLEXILOCK Hydraulic Pump Drive Kits for Diesel Engines

The FLEXILOCK hydraulic pump drive kit is a precision engineered single pump drive system designed to interface diesel engines with hydraulic pumps using SAE compatible mounting standards. Manufactured in Australia, FLEXILOCK drive kits provide reliable torque transmission, simplified installation and long-term operational durability.

Whether you are specifying a new hydraulic power pack, replacing an existing pump drive, or upgrading a diesel engine interface system, FLEXILOCK delivers a complete hydraulic pump drive solution.

Engineered for SAE Compatibility

FLEXILOCK hydraulic pump drive kits are pre-engineered to interface diesel engines manufactured to SAE flywheel housing and flywheel standards. The system supports a wide range of hydraulic pumps built to SAE pump mounting configurations, as well as many DIN types.

Each kit is designed to ensure correct alignment between the engine flywheel and hydraulic pump input shaft, reducing the risk of premature spline wear or misalignment.

Check your SAE engines dimensions here
Check you Hydraulic pump mount dimensions here

CLAMPLOCK Spline Locking System

For splined pump applications, FLEXILOCK kits can include the CLAMPLOCK spline locking mechanism. This system secures the geared hub to the hydraulic pump shaft and helps maintain proper spline engagement under load.

Correct hub positioning is critical to ensure full gear tooth contact. Installation instructions specify the correct “L” set-up length to optimise engagement while preventing end loading on the pump shaft.

Shop for a replacement CLAMPLOCK hub here

Designed for Mechanical Integrity

FLEXILOCK hydraulic pump drive kits address critical installation factors including:

• Driveplate orientation and flywheel recess fitment
• Correct bolt torque values for spline locking
• Verification of pump pilot diameter compatibility
• Maximum static cantilever loading limits of 14 kgm (101 ft-lb)

Managing cantilever loading is essential when installing larger or multi-element pumps. Where required, additional pump support structures should be considered.

Replacement Driveplates Available

Over time, driveplates may require replacement due to wear. FLEXILOCK replacement driveplates are available to maintain performance and compatibility with existing kits.

Shop our replacement Driveplates here

Applications

FLEXILOCK single hydraulic pump drive kits are commonly used in:

• Industrial hydraulic power units
• Mobile and off-road equipment
• Mining and agricultural machinery
• Power generation systems
• OEM equipment builds

Select the Right Kit

To ensure correct compatibility between your diesel engine and hydraulic pump, use the PT5 catalogue selection guide,  FLEXILOCK Drive Kit Selection App or contact our technical team for assistance.

Explore the full range of FLEXILOCK hydraulic pump drive kits and replacement driveplates online.

FLEXILOCK Hydraulic Pump Drive Kit Selecion App

PT5 Power Transmission Catalogue

Installation & Technical Resources

Correct identification of both the diesel engine flywheel housing and the hydraulic pump mounting configuration is critical before selecting a hydraulic pump drive kit. FLEXILOCK drive kits are engineered around common SAE interfacing standards, and accurate measurement of flywheel housing size, flywheel dimensions, pump pilot diameter and mounting bolt pattern ensures proper alignment, spline engagement and long-term reliability. 

FLEXILOCK Hydraulic Pump Drive Kit Selecion App

PT5 Power Transmission Catalogue

FLEXILOCK Installation Instructions (PT70)

The FLEXILOCK Hydraulic Pump Drive Kit Installation Instructions (PT70) provide step-by-step guidance for assembling the driveplate, housing adaptor and geared hub. The document includes hub positioning requirements, CLAMPLOCK spline locking procedures, torque specifications and cantilever loading limits to help ensure correct installation and dependable performance. 

FLEXILOCK Hydraulic Pump Drive Kit Installation Instructions (PT70)

SAE Engine Flywheel & Housing Dimensions

This guide assists with identifying the correct SAE flywheel housing size and flywheel configuration for your diesel engine. Accurate identification of SAE housing and flywheel standards is essential to ensure the selected FLEXILOCK hydraulic pump drive kit interfaces correctly with the engine.

SAE Engine Flywheel & Housing Dimension Guide (J617C / J620D)

SAE Hydraulic Pump Mount Dimensions

This reference helps determine the hydraulic pump mounting standard, including pilot diameter and bolt pattern configuration. Confirming pump mount dimensions ensures the correct engine housing adaptor and drive hub are selected for safe and precise hydraulic pump drive installation. 

SAE Hydraulic Pump Mount Dimension Guide (J744C)