PTO Gear Pump Overview
The document provides technical specifications and installation dimensions for various models of PTO gear pumps used in the hydraulic systems of agricultural tractors. These pumps are essential for powering various tractor functions.

Specifications and Models
The document lists several models of PTO gear pumps, each with specific displacement, pressure, and speed ratings. Key models include:

• CB-P160LJ53S33BB: Displacement of 160 cc/r, maximum pressure of 60 bar (2250 psi), and operational speed of 1000 RPM.
• CB-P125LJ53S33BB: Displacement of 125 cc/r, with similar pressure and speed specifications.
• CB-P90LJ53S33BB: Displacement of 90 cc/r.
• CB-P56LJ53S33BB: Displacement of 56 cc/r.

Each model is also available in a variant with a different speed rating of 540 RPM.

Installation Dimensions
The document provides detailed installation dimensions for each model, including measurements labeled as L1, L2, L3, L4, and L5. These dimensions are crucial for ensuring proper fit and function within the tractor's hydraulic system.

Usage Guide
The document includes a section labeled '使用指南' (Usage Guide), which likely contains instructions for the operation and maintenance of the PTO gear pumps, although specific details are not provided in the text.