CB18 plunger

The types of plunger couples produced by Huahui Oil Pump and Nozzle Company include: BQ series, No. I series, No. II series, A series, AK series, AD series, P series, and high-pressure common rail series, with diameters ranging from 5 to 18 mm. With inclined grooves and spiral grooves with different leads and different rotational directions, the product can meet the needs of oil pumps for diesel engines with different performances.

CB18 plunger couple is the core component of the engine fuel system. It is accurately paired with a plunger and a plunger sleeve, and the material is mostly high-temperature and corrosion-resistant alloys. The fitting gap between the two is extremely small, about 0.0015 - 0.0025mm. Through the reciprocating movement of the plunger, fuel pressurization and precise supply are achieved, improving engine power and fuel economy.

 

Product Description

The CB18 Plunger is a precision-engineered component used in diesel fuel injection pumps, responsible for delivering high-pressure fuel into the engine's combustion chamber. Designed for durability, reliability, and high performance, the CB18 plunger is widely used in single-cylinder diesel engines and small fuel systems. Its hardened surface and accurate fit ensure optimal fuel delivery and long-term operation, even under extreme conditions.

 

Product Advantages

High-Precision Manufacturing

Machined to exact tolerances to ensure smooth operation and consistent fuel delivery.

Superior Wear Resistance

Constructed from high-grade alloy steel with a hardened surface to resist wear, corrosion, and pressure.

Stable Fuel Pressure Output

Ensures consistent injection pressure, resulting in smoother engine performance and better fuel combustion.

Wide Compatibility

Suitable for a range of diesel injection pumps used in agricultural, industrial, and power generation engines.

 

Product Applications

The CB18 Plunger is commonly used in:

Single-cylinder diesel engine fuel injection systems

Diesel water pumps

Small agricultural machinery (e.g., walking tractors, tillers)

Small diesel generator sets

Construction tools (e.g., tampers, compactors)

It is ideal for equipment requiring stable and efficient fuel injection in rugged or remote environments.

 

FAQ

How many production lines in your factory?

5 production lines.

 

What is your MOQ?

100 pieces.

 

Can you design the equipment according to our size?

Yes.

 

What type of engines use the CB18 plunger?

The CB18 plunger is typically used in single-cylinder diesel engines and compatible fuel injection pumps, often found in agricultural or portable diesel equipment.

 

How do I know if my plunger needs replacement?

Common signs include poor fuel delivery, difficulty starting, loss of power, or uneven engine performance. A worn or leaking plunger often requires replacement.

 

How long does the CB18 plunger last?

With proper fuel filtration and regular maintenance, it can last for over 1,000–1,500 hours depending on operating conditions.

 

Can I replace the plunger myself?

Replacement requires mechanical knowledge and precision alignment. It’s recommended to have a trained technician perform the replacement to avoid misalignment or damage.

 

Company Introduction

Changzhou Huahui Fuel Injection Equipment Co.,Ltd's main products include S and P series long and short injector assembly and injector nozzle parts. Injection pumps used in 165-1125 single-cylinder engines and plungers and oil delivery valve parts used in injection pumps. In recent years, with the efforts of our scientific research personnel, we have successively developed P series BQ type, PW type, P7 type, P8 type, PE type, PN type, P7100 type, P2000 type, high-pressure common rail series, etc., a total of more than 100 types of plunger parts and electronically controlled single pumps.