The BB-B Cycloid Gear Pump is a positive displacement internal gear oil pump designed for low-pressure hydraulic systems. With its simple structure, low noise, stable oil delivery, and strong self-priming performance, it is widely used in hydraulic systems for machine tools, hydraulic machinery, and engineering machinery as a system power source.
This series can also be used as an oil transfer pump, lubrication pump, booster pump, or fuel pump. It is suitable for conveying mineral oils with a viscosity of 1–8°E and an oil temperature of 10°C to 60°C, including hydraulic oil, mechanical oil, and fuel oil. According to the source description, the standard speed is 1450 rpm, and when used as a lubrication pump or under special conditions, it can also operate at low speeds from 100 to 1000 rpm.
The pump is mainly composed of a pump body, gears, front cover, rear cover, bearings, and skeleton oil seal. The pump body, front cover, and rear cover are made of HT250 gray cast iron. The gears are made of powder metallurgy material, the pump shaft is made of hardened 40Cr alloy steel, and the bearings can be SF-1 oil-free lubrication bearings or needle roller bearings. The seal uses double-lip nitrile rubber according to the source description.
Features & Advantages
- Positive Displacement Internal Gear Design: Suitable for low-pressure hydraulic oil delivery and lubrication service.
- Compact and Lightweight: Small size, light weight, simple structure, and convenient installation.
- Strong Self-Priming Performance: No oil filling is required when starting under the stated operating conditions.
- Stable and Quiet Operation: Designed for smooth oil transfer with low operating noise.
- Multiple Application Modes: Can be used as an oil transfer pump, lubrication pump, booster pump, or fuel pump.
- Low-Speed Capability: Suitable for heavy oil and high-viscosity liquid transfer under low-speed operating conditions described in the source.
Typical Applications
- Hydraulic systems for machine tools
- Hydraulic machinery and engineering machinery
- Thin oil station systems
- Metallurgy, mining, petroleum, chemical, and textile machinery
- Oil transfer, lubrication, boosting, and fuel delivery
- Heavy oil and high-viscosity liquid transfer at low speed