Product Overview
The CBJ70-E160 is the flagship large-displacement model in the CBJ70-E series external gear pumps, featuring a displacement of 160 mL/r and a rated pressure of 14 MPa.
The CBJ70-E series gear pumps are manufactured by Changzhi Hydraulics Co., Ltd. (formerly Changzhi Hydraulic Parts Factory) using technology introduced from Komatsu Ltd. of Japan (PAL and PAR pump technology). These pumps are specifically designed for the hydraulic systems of bulldozers produced by major Chinese OEMs including Shantui, Huanggong, Tianjin 6443, Shanghai Pengpu, and Inner Mongolia First Machinery. As the power source for bulldozer implement hydraulic systems, the pump’s performance directly affects the host machine’s working efficiency.
The CBJ70-E160 is a medium-to-high pressure, large-displacement external gear pump featuring a three-piece construction. It is characterized by simple structure, excellent performance, reliable operation, and easy maintenance. The pump is primarily used in hydraulic systems for construction machinery, mining equipment, and other industrial machinery. The CBJ70-E160 is specifically compatible with Shantui SD22 crawler bulldozers (matching part number 07444-66103).
Engineered as a direct OEM-replacement solution for CBJ70-E series original products, the CBJ70-E160 fully complies with CBJ70-E series original design standards and mounting interface specifications, offering 100% direct interchangeability with OEM pumps. Every unit undergoes 100% workload simulation testing prior to shipment, rigorously validating pressure retention, volumetric efficiency, and internal leakage performance to meet or exceed OEM standards.
Model Code Breakdown (Bulleted List) :
CBJ — Series: Construction Machinery Gear Pump
70 — Frame size: CBJ70 Series
E — Pressure rating and design series
160 — Displacement code: Nominal displacement 160 mL/r
Technical Specifications
Model: CBJ70-E160
Series: CBJ70-E External Gear Pump
Nominal Displacement: 160 mL/r
Rated Working Pressure: 14 MPa
Speed Range: 2000 – 2600 r/min
Housing Material: High-strength cast iron
Construction: Three-piece construction
Gear Type: External gear pump
Technology Source: Komatsu PAL/PAR pump technology
Compatible Models: Shantui SD22 and other crawler bulldozers
Key Technical Advantages
1. Komatsu Licensed Technology – Proven Quality
The CBJ70-E series gear pumps are manufactured using technology introduced from Komatsu Ltd. of Japan (PAL and PAR pump technology). The mature technology platform ensures high quality and reliability.
2. Large Displacement with High Flow Output
160 mL/r is the largest displacement in the CBJ70-E series. The large displacement ensures ample flow supply for bulldozer implement hydraulic systems under heavy-load conditions, effectively improving host machine working efficiency.
3. High-Strength Cast Iron Housing – Durable & Reliable
The pump housing is manufactured from high-strength cast iron, providing excellent fatigue strength and impact resistance. Particularly suitable for bulldozers operating under harsh conditions in mining and earthmoving applications over extended periods.
4. Three-Piece Construction – Easy Maintenance
The three-piece construction design is simple and easy to disassemble and repair, reducing on-site maintenance difficulty and time costs.
5. OEM Factory Supply – 100% Direct Interchangeability
This pump is the original equipment for major Chinese bulldozer OEMs including Shantui, Huanggong, Tianjin 6443, Shanghai Pengpu, and Inner Mongolia First Machinery. Fully compliant with CBJ70-E series original design standards, with flange dimensions, shaft specifications, and mounting interfaces identical to OEM pumps—direct drop-in replacement with zero modifications required.
6. 100% Factory Tested
Every unit undergoes 100% workload simulation testing prior to shipment, covering pressure retention verification, internal leakage detection, and flow validation—ensuring every unit meets design performance standards.
Application Areas
The CBJ70-E160 gear pump is primarily used in the following equipment:
Crawler Bulldozers: Shantui SD22 and other crawler bulldozers
Bulldozer Series: Various bulldozer models produced by Shantui, Huanggong, Tianjin 6443, Shanghai Pengpu, Inner Mongolia First Machinery, and other manufacturers
Construction Machinery: Hydraulic systems for various construction machinery
Mining Machinery: Hydraulic systems for mining equipment
Expert Maintenance Tips
1. Model Confirmation
CBJ70-E160 offers 160 mL/r displacement, the largest in the CBJ70-E series. The series also includes CBJ70-E63, CBJ70-E80, CBJ70-E112, CBJ70-E125, CBJ70-E140, and other displacement options. Before installation, confirm the correct displacement based on system flow requirements and verify the complete model code on the pump nameplate.
2. Compatible Model Confirmation
CBJ70-E160 is primarily used for Shantui SD22 crawler bulldozers. For other models, confirm mounting interface compatibility (flange dimensions, spline shaft specifications, etc.).
3. Installation Precautions
Thoroughly clean the mounting flange and shaft mating surfaces before installation to ensure no debris remains
Use specified torque values for mounting bolts—avoid over-tightening which may cause distortion of the cast iron housing
Ensure correct connection of inlet and outlet ports—the inlet line must have no restrictions or sharp bends
As a medium-to-high pressure, large-displacement pump, the CBJ70-E series requires adequate inlet line diameter to ensure sufficient oil supply
4. First Start-Up and Bleeding
Before first start-up, must fill the pump with hydraulic oil through the inlet port—never start dry
After start-up, run at low speed with no load for 2–3 minutes to ensure complete air evacuation from the system
Check for abnormal noise or leakage
5. Fluid and Filtration
Use high-quality anti-wear hydraulic oil compliant with standards
Maintain system oil cleanliness to ISO 4406 18/15 or better
Maintain operating temperature within recommended range
Regularly replace return line filters to prevent contaminants from entering the pump
6. Periodic Maintenance
Check mounting bolt torque every 1,000 operating hours
Regularly monitor system operating pressure—not to exceed 14 MPa rated pressure
Regularly inspect shaft seals to prevent leakage
If flow output decreases, noise levels increase abnormally, or system temperature rises excessively, inspect and replace worn components promptly
