CBJ70-E160 Hydraulic Gear Pump for Shantui Bulldozer
Product Overview
The CBJ70-E160 is a medium-to-high pressure, large-displacement external gear pump manufactured by TZYY Changzhi Hydraulic Co., Ltd. (formerly Shanxi Changzhi Hydraulic Parts Factory). Developed using Komatsu PAL and PAR pump technology, this pump is specifically engineered for the working hydraulic systems of Shantui bulldozers—serving as the core power source for dozer blade operations.
The CBJ70-E series gear pumps are widely used in bulldozers produced by Shantui, Huanggong, Tianjin 6443, Shanghai Pengpu, and Inner Mongolia First Machinery, covering bulldozer models from 130 HP to 900 HP. Operating reliably at 14 MPa rated pressure and subjected to 100% simulated load testing, the pump delivers exceptional durability under the severe shock-load conditions typical of bulldozer applications.
This CBJ70-E160 model is fully interchangeable with original Shantui bulldozer parts—the ideal replacement choice for dozer work pump maintenance and overhaul.
Technical Specifications
CBJ70-E160 Series Gear Pump – General Specifications
Product Series: CBJ70-E Series
Model: CBJ70-E160
Pump Type: Medium-to-high pressure, large-displacement external gear hydraulic pump
Construction: Three-section housing design
Nominal Displacement Range: 63 – 160 mL/r (series range)
Rated Pressure: 14 MPa
Maximum Pressure: 16–17.5 MPa (peak)
Rated Speed: 2,000 r/min
Maximum Speed: 2,600 r/min
Fluid Type: Petroleum-based hydraulic oil (bulldozer working hydraulic systems)
Compatible Models: Shantui SD16, SD22, SD32 series bulldozers
Technology Origin: Komatsu PAL/PAR pump technology
Manufacturing Standard: Construction machinery industry standard
Key Technical Advantages
1. Komatsu-licensed Pump Technology
The CBJ70-E series gear pump is built upon Komatsu PAL and PAR pump technology, incorporating decades of Komatsu‘s hydraulic expertise in construction machinery. The design, material selection, and manufacturing processes meet internationally advanced standards, ensuring optimal matching with Shantui bulldozer hydraulic systems.
2. Large Displacement for Heavy-Duty Operations
With a nominal displacement range of 63–160 mL/r, the CBJ70-E160 represents the largest displacement option in the series—delivering the high flow capacity required by high-power bulldozer working attachments. Large displacement ensures rapid response and robust power for blade lifting, tilting, and floating operations.
3. Medium-to-High Pressure Capability
Rated at 14 MPa with peak pressure capacity reaching 16–17.5 MPa, the pump delivers stable performance under medium-to-high pressure conditions—meeting the demanding pressure requirements of dozing, ripping, and scraper operations. The pump has passed rigorous durability testing at 14 MPa rated pressure.
4. Three-Section High-Strength Construction
The three-section housing design with separate body, front cover, and rear cover facilitates easy maintenance and overhaul. High-strength materials and precision machining ensure structural rigidity and dimensional stability under high-pressure, high-frequency shock loading—significantly extending service life.
5. Broad Model Compatibility
The CBJ70-E series gear pump is a core supporting product for Shantui, compatible with mainstream Shantui bulldozer models including SD16, SD22, and SD32. It is also suitable for Komatsu D53, D65, D75, and D85 series bulldozers. Fully interchangeable with original Shantui parts—no adapters or modifications required.
Application Areas
Shantui series bulldozers: SD16, SD22, SD32 working hydraulic systems
Komatsu series bulldozers: D53, D65, D75, D85 series
Other bulldozer brands: Huanggong, Tianjin 6443, Shanghai Pengpu, Inner Mongolia First Machinery
Construction machinery hydraulic systems: Working, transmission, and steering hydraulics for bulldozers and loaders
Mining machinery hydraulic systems: Hydraulic power systems for various mining equipment
Expert Maintenance Tips
Model Verification: In CBJ70-E160, “CBJ70” indicates the product series, “E” indicates the E series, and “160” indicates 160 mL/r nominal displacement. Before installation, verify that the original pump model matches CBJ70-E160 to ensure identical interface dimensions and mounting configuration.
Pre-Installation Inspection: Inspect all ports for shipping damage and ensure no debris is blocking the inlet or outlet ports. Prior to first start-up, fill the pump cavity with clean hydraulic oil from the outlet port to prevent dry running.
Inlet Line Requirements: Ensure inlet piping is unobstructed with minimal elbows. Inlet line diameter should be no smaller than the pump inlet port to prevent cavitation caused by excessive inlet resistance.
Fluid Cleanliness Management: Given the harsh operating environment of bulldozers, maintain system fluid cleanliness to ISO 4406 18/16/13 or better. Install a suction filter with minimum 100 μm rating and replace filter elements regularly.
Coupling Alignment: Ensure proper concentricity between the motor shaft (or engine PTO) and the pump shaft. Excessive misalignment will cause premature bearing wear and shaft seal leakage.
Regular Maintenance: Inspect pump operating condition every 1,000–2,000 operating hours. If system pressure drops, blade response slows, or abnormal noise occurs, promptly inspect gear pairs and bearing wear—replace the pump cartridge assembly as needed.
